• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    positive retract hitch locking dog for a rotary control device. a coupling and method for use not provided for coupling an item of oil field equipment. the hitch has a housing that contains a hitch member, and the hitch member is movable between a radially engaged position in which it is engaged with the oil field equipment item, and a radially retracted position in which it is disengaged from the oil field item. oil field equipment. an actuator is configured to engage the coupling field to the radially engaged position. further, the actuator is configured to drive the coupling member towards the radially retracted position.
    公开号:BR112013000999B1
    申请号:R112013000999-3
    申请日:2011-07-15
    公开日:2020-06-02
    发明作者:Aristeo Rios；Aristeo Rios Iii；James W. Chambers；James W Chambers；Thomas F. Bailey；Thomas F Bailey；Danny W. Wagoner；Danny W Wagoner；Simon J. Harrall；Simon J Harrall
    申请人:Weatherford Technology Holdings, Llc；
    IPC主号:
    专利说明:

    “APPLIANCE FOR HITTING AN OIL FIELD EQUIPMENT ITEM [001] This order claims the benefit of the Order
    U.S. Provisional No. 61 / 365,288, filed July 176, 2010.
    DECLARATIONS CONCERNING RESEARCH OR DEVELOPMENT WITH FEDERAL SUBSIDY
    Not applicable.
    NAME OF PARTIES FOR A JOINT RESEARCH AGREEMENT
    Not applicable.
    BACKGROUND [002] Oil field operations can be performed in order to extract fluids from the ground. When a well site is completed, pressure control equipment can be positioned close to the surface of the soil. The pressure control equipment can control the pressure in the well bore during drilling, completion and production of the borehole. Pressure control equipment can include outbreak prevention equipment (BOP), rotary control devices and the like.
    [003] The rotary control device or RCD is a direct drilling device with a rotating seal that contacts and forms a seal against the drill string (drill tube, liner, drill collars, kelly, etc.) for the purpose of control of pressure or fluid flow to the surface. For reference to an existing description of a rotary control device that incorporates a system for indicating the position of a hitch on the rotary control device, please make a
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    2/31 reference to U.S. patent publication number 2009/0139724 entitled “Latch Position Indicator System and Method”, U.S. Application No. 12 / 322,860, filed February 6, 2009, the disclosure of which is hereby incorporated by reference. This publication describes a rotary control device that has a hitch system used for attaching and releasing extractor rubber bearings and assemblies to and out of the housing for the rotary control device.
    [004] Previous hitch systems have a tendency to jam, adhere, cling or become housed in a docked position with oil field equipment. When the coupling is stuck, oilfield equipment and / or pressure control systems can become damaged. Also, when the coupling is stuck, the probe time is lost when repairing the damaged equipment. There is a need for more efficient engagement and disengagement of items of oil field equipment.
    SUMMARY [005] A hitch and method for use are provided for hitching an item of oil field equipment. The hitch has a housing that contains a hitch member, and the hitch member is movable between a radially engaged position in which it is engaged with the oil field equipment item, and a radially retracted position in which it is disengaged from the oil field item. oil field equipment. An actuator is configured to drive the coupling member to the radially engaged position. Furthermore, the actuator is configured to activate the coupling member
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    3/31 towards the radially retracted position.
    [006] As used here, the terms radially and radially include directions inward (or outward) toward the central axial direction of the drill string or oilfield equipment item, but not limiting to directions perpendicular to that direction axial or running directly through the center. Instead, these directions, while including perpendicular and toward (or away from) the center, also include those transverse and / or off-center still moving inward (or outward) through or against the surface of an outer sleeve of an item of oil field equipment to be fitted.
    BRIEF DESCRIPTION OF THE DRAWINGS
    [007] THE figure 1 describes a View schematic on one local well.[008] THE figure 2A describe an seen in section transversal of an RCD in a deal with a modality.[009] THE figure 2B describe an seen in section
    section of a portion of a coupling on the RCD according to an embodiment.
    [010] Figure 3 describes a cross-sectional view of a portion of the coupling according to an embodiment.
    [011] THE figure 4 describes a View in perspective of a member in hitch according a modality. [012] THE figure 5 describe an section view transversal schematic of a hitch according to a modality.[013] THE figure 6 describe an section view
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    4/31
    transversal in an modality of an portion of hitch operating in an position intermediate. [014] THE figure 7 describe an View in section transversal in an modality of an portion of hitch operating in an position docked. [015] THE figure 8 describe an View in section transversal in an modality of an portion of hitch
    operating in a closed position, but without fitting any suitable oil field equipment.
    [016] Figure 9 depicts a cross-sectional view of an embodiment of a portion of a coupling which has not been released from the engaged or closed position.
    [017] A figure 10 describe an View in section transversal of a modality of an portion of hitch operating to positively trigger the hitch to the position undocked . [018] A figure 11 describe an View in section transversal top of hitch detached from a deal with a modality. [019] A figure 12 describe an View in section
    top cross section of the coupling fitted according to an embodiment.
    [020] Figure 13A describes an alternative schematic arrangement of the coupling.
    [021] Figure 13B describes a view of the embodiment of figure 13A taken along line 13B-13B.
    [022] A figure 14 describe an View in section transversal of a portion hitch according an another modality. [023] A figure 15 describe an View in section
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    5/31 cross-section of a portion of the coupling showing the coupling in the disengaged position according to another embodiment.
    [024] Figure 16 describes a cross-sectional view of a portion of the coupling showing the coupling in the engaged position according to another embodiment.
    [025] Figure 17 depicts a cross-sectional view of a portion of the coupling showing the coupling in the engaged position according to another embodiment.
    [026] Figure 18 depicts a cross-sectional view of a portion of the coupling showing the coupling in the disengaged position according to another embodiment.
    [027] Figure 19 depicts a cross-sectional view of a portion of the coupling showing the coupling in the engaged position according to another embodiment.
    [028] Figure 20 depicts a cross-sectional view of a portion of the coupling showing the coupling in the disengaged position according to another embodiment.
    [029] Figure 21 depicts a cross-sectional view of a portion of the coupling showing the coupling in the engaged position according to another embodiment.
    [030] Figure 22 describes a cross-sectional view of a portion of the coupling showing the coupling in the disengaged position according to another embodiment.
    [031] Figure 23 depicts a cross-sectional view of a portion of the coupling showing the coupling in the engaged position according to another embodiment.
    [032] Figure 24 depicts a cross-sectional view of a portion of the coupling showing the coupling in the engaged position according to another embodiment.
    [033] Figure 25 describes a method of using the hitch.
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    6/31 [034] Figure 26 describes a schematic view of a portion of another embodiment of a well site. DETAILED DESCRIPTION OF MODALITY (S) [035] The description that follows includes example apparatus, methods, techniques and instructional sequences that concretize the techniques of the inventive subject. However, it is understood that the described modalities can be practiced without these specific details.
    [036] Figure 1 depicts a schematic view of a well site 100 that has a hitch 102 for engaging an item or piece of oil field equipment 104. Well site 100 may have a well bore 106 formed in the terrain and coated with a liner 108. On the surface of terrain 110, one or more pressure control devices 112 can control pressure in well bore 106. Pressure control devices 112 can include, but are not limited to, BOPs, RCDs, and the like. Hitch 102 is shown and described here as being located in housing 114. Hitch 102 may have one or more hitch members 116 configured to fit oil field equipment 104. Hitch 102 may have one or more actuators 118 configured for activating the coupling to and from the socket with the oil field equipment 104. The coupling 102 can also include one or more sensors 119 configured for the identification of the status of the coupling 102.
    [037] Well location 100 may have a controller 120 for controlling hitch 102. In addition to hitch control 102, controller 120, and / or additional controllers (not shown) can control and / or obtain information from
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    7/31 from any suitable system around well location 100, including, but not limited to, pressure control devices 112, housing 114, sensor (s) 119, a holding device 122, a rotary apparatus 124 and the like. As shown, the clamping apparatus 122 may be a pair of wedges configured to hold a tubular member 125 (such as a drill string, a production column, a liner and the like) on a probe floor 126, although the clamping apparatus securing device 122 can be any suitable securing device. As shown, the rotary apparatus 124 is a top drive for supporting and rotating the tubular element 125, although it may be any suitable rotating device including, but not limited to, a kelly, a tube screw, and the like. Controller 120 can also control any suitable equipment around well location 100, including, but not limited to, a drilling winch, a catarina, pumps, mud control devices, cementing tools, drilling tools and the like.
    [038] Figure 2A depicts a cross-sectional view of housing 114 having coupling 102 according to an embodiment. The housing 114, as shown, has the coupling member or tongue 116, one or more actuators 118, a coupling housing 200 (or housing parts), a bottom flange 202, a flow control portion 204 and a mandrel fisherman 206. Hitch 102 as shown is configured to engage an outer sleeve 208 of a bearing 210. Hitch 102 can hold outer sleeve 208 in place while allowing bearing 210
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    8/31 rotate and / or absorb forces caused by the rotation of tubular elements being maneuvered into and / or out of the well bore 106. Although the hitch 102 is shown and described as engaging an outer sleeve 208, it can engage in any suitable oil field equipment, including, but not limited to, an RCD, a bushing, a bearing, a bearing assembly, a test plug, a piston adapter, an anchor sleeve, a sleeve, sealing elements, and the like.
    [039] Bottom flange 202 can be for coupling housing 114 to other pressure control devices 112 (as shown in figure 1). The flow control portion 204 can be configured to control the annular pressure in the housing 114 and / or in the well bore 106. The mandrel 206 can be configured to receive and / or guide the tubular element 125 (as shown in figure 1 ), as he enters housing 114.
    [040] The coupling housing 200, as shown in figure 2A, can define an opening 212 (or a channel) for receiving the outer sleeve 208, or other oil field equipment. Opening 212 may have a shoulder 214, or flange (as shown in figure 2B), for receiving and / or supporting a combination profile 216 on outer sleeve 208. Hitch housing 200 may have an annular opening 218 through from there, which allows coupling member 116 to pass through coupling housing 200 and fit into outer sleeve 208. Referring to figure 3, coupling housing 200 may have one or more slots 220 formed through the top and / or bottom of support material 218. Slots 220 can
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    9/31 allow fluids to pass through there, while the engaging member 116 travels between a radially engaged inward (or outward position, as the case may be) and a radially retracted disengaged position or outward (or inward as where applicable). In addition, an annular slot 221 can be configured to allow fluids to move between coupling housing 200 and 208 and / or oil field equipment 104. Slots 220 and / or 221 work for relief or inhibition of pressure and / or residue build-up in the spaces around the outside of coupling member 116. The source of that pressure and / or that residue could be the well hole pressure and / or a leaking seal.
    [041] Coupling housing 200 can further define an actuator cavity 222. Actuator cavity 222 can be configured to substantially accommodate actuators 118. Actuator cavity 222 can have any number of windows 223 thereafter to support an fluid pressure in actuators 118. Fluid pressure can be pneumatic or hydraulic pressure. Actuator cavity 222 as shown is an annular cavity configured for housing actuators 118. Actuator cavity 222 may be in communication with slots 220 and annular opening 218, in order to allow actuators 118 to move the limb engage 116 between engaged and disengaged positions. Although the engagement housing 200 is shown to have a spring opening 218 and the actuator cavity 222, it should be appreciated that the annular opening 218 can be several openings around the engagement housing 200 and the actuator cavity 222 can be several cavities
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    10/31 located around the coupling housing 200, each housing separate actuators 118.
    [042] The actuators 118 are configured to actuate or activate the coupling member 116 radially fitted and to fit with the external sleeve 208, or with other oil field equipment. Actuators 118 are also configured to actuate or actuate engagement member 116 radially outwardly and into engagement housing 200. As shown in Figure 2B, actuators 118 comprise a first or plug-in actuator 224, or plug-in piston, and a second actuator or release 226, or release piston. Optionally, the actuators 118 may have a secondary disengagement actuator 228. The interlock actuator 224 moves the engaging member 116 towards the engaged position. The release actuator 226 moves the latch member 116 to the release position, thereby allowing the outer sleeve 208 or the oil field equipment 104 to be removed from housing 114. Secondary release actuator 228 can be used to increase the removal force on the engaging member 116 in the event that the engaging member 116 becomes gripped and / or stuck in the engaged position.
    [043] Figure 3 describes an exploded view of the hitch
    102 according to one modality. The hitch member (s)
    116 is in a position interposed with respect to the plug-in actuator 224 and the plug-out actuator 226. The plug-in actuator 224, as shown in figure 2B, is an annular piston configured to move towards the (s) coupling member (s) 116, when fluid pressure is applied to a piston surface 300a through the window
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    11/31
    223. The fluid can enter a fluid chamber 301a and / or 301b, in order to move the plug actuator 224 and the release actuator 226, respectively. The fluid can be a hydraulic or pneumatic fluid. The plug-in actuator 224 can have at least one ramp 302a, an interface or drive surface, for driving the latch member 116 radially inwardly towards the locked position. The plug-in actuator 224, as shown, has two ramps 302a and 302b (which, upon impact with one or more engaging members 116, form contiguous interfaces with them). The ramp 302a can have a large inclination in relation to the coupling member 116. The large inclination can increase the radial distance traveled by the coupling member 116 with very little linear movement of the plug-in actuator 224. Therefore, through the actuation of the plug-in actuator 224, the engagement member can be quickly moved to a location close to the outer sleeve 208, or to the oil field equipment 104. The ramp 302a can have an inclination between twenty-five and fifty-five degrees. In another embodiment, the ramp 302a has an inclination between thirty and forty degrees.
    [044] The ramp 302b can have a smooth slope in relation to the coupling member 116. The soft slope can be configured to move the coupling member 116 radially at a slower rate by the linear movement of the plug actuator 224. The shallow inclination it can act as an automatic lock on the coupling member 116 (against, for example, the borehole pressure), if the fluid pressure is lost on the piston surface 300a. The gentle slope can be between one and twenty degrees in one mode.
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    12/31
    In another mode, the gentle slope can be between nine and ten degrees. Although plug-in actuator 224 is shown to have two ramps 302a and 302b, there can be any suitable number of ramps, including one, two, three or more.
    [045] The plug-in actuator 224 can have a plug-in rim 304. The plug-in rim 304 can be configured to be engaged by a tip 306 of the release actuator 226. Therefore, the tip 306 of the release actuator 226 can be used for applying force to the plug actuator 224. When the force applied by the tip 306 is large enough to overcome the force applied to the plug actuator 224 by fluid pressure, the plug actuator 224 will move linearly from the engagement member 116. This can release engagement member 116 for orientation back to the disengaged position, or be moved toward the disengaged position by disengaging actuator 226. Engagement actuator 224 can have any number of seal receptacles 308a , 308b and 308c for housing 310a, 310b and 310c seals. The seals 310a, 310b and 310c can prevent fluid from passing between the surfaces of the plug-in actuator 224, the latch housing 200 and / or the plug-in actuator 226.
    [046] The release actuator 226 can have a piston surface 300b to propel the release actuator 226 towards the engaging member 116 and / or the click actuator 224. The release actuator 226 can have a ramp (interface or actuation surface) 302c (which, when impacted with one or more coupling members 116, forms interfaces contiguous with them) for fitting the
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    13/31 hitch member 116 and movement, retraction or actuation of the hitch member radially away from the outer sleeve 208, or from the oil field equipment and to the disengaged position. As shown, the ramp 302c can have an inclination between the large and soft inclination of the plug actuator 224, or an inclination similar to the large and / or shallow inclination of the plug actuator 224. In another embodiment, the release actuator 226 it can have two ramps (just one described) similar to the ramps 302a and 302b of the plug-in actuator 224. The release actuator 226 can have any number of seal receptacles 308d and 308e for housing seals 310d and 310e. The seals 310d and 310e can prevent a fluid from passing between the surfaces of the plug actuator 224, the locking housing 200 and / or the release actuator 226.
    [047] The plunger actuator 226 can have a plunger 312. Plunger 312 can extend in front of the engaging member 116 for fitting the flange 304 with the tip 306. As a fluid pressure is applied to the plunger actuator 226 , the tip 306 can engage the locking rim 304, thereby moving the locking actuator 224 away from the engaging member 116. As the locking actuator 226 moves the locking actuator 224, the ramps 302a and 302b can be detached of the engagement member 116. The continued movement of the release actuator 226 can engage the ramp 302c with the engagement member 116 in order to move / force the engagement member 116 directly and positively towards the disengaged position. Although undercut actuator 226 is shown as a separate part from undercut actuator 224, it must be appreciated
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    14/31 that they can be integral.
    [048] The plunger 312 can have a ramp of position 314 located on one side. Sensor 119 can be used to determine the position or distance from / to position ramp 314 in relation to the coupling housing 200. For example, sensor 119 can be an optical sensor which determines the distance between the position 314 and sensor 119. By knowing the distance, the exact linear positions of the release actuator 226 and the click actuator 224 can be determined. The location of the plug actuator 224 and the release actuator 226 may allow the operator and / or the controller 120 to determine the exact position of the coupling member 116. Although sensor 119 is described as an optical sensor, any suitable type of sensor can be used, including, but not limited to, an infrared sensor, a mechanical sensor, a piston type sensor, a strain gauge and the like.
    [049] Additional sensors 119 can be located around the engagement housing 200 in order to determine the location of actuators 118. For example, sensors 119a and 119c can be positioned near an end end 316a and 316b of the cavity actuator 222. Sensors 119a and 119c may allow the operator and / or controller 120 to determine whether the plug actuator 224 and / or the release actuator 226 reached the end ends 316a and 316b, respectively. In addition, the volume, flow and / or pressure of the fluid entering and / or leaving the fluid chambers 301a and / or 301b can be measured (or detected near sensors 119) and, optionally, recorded in order to determine The
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    15/31 location of actuators 118.
    [050] THE member hitch 116 may Tue an portion in fit 318 is portion of actuator 320. THE portion in fit 318 can have one or more profiles 322a and 322b configured for dock and fixation The one profile in combination 324 of external sleeve 208. Therefore, When The
    coupling member 116 is in the engaged position, one or more profiles 322a and 322b fit into the combination profile 324
    of the glove external 208, so if preventing that the glove external 208 if move linearly on accommodation 114. The slope of a or more 322a profiles and 322b can line up
    the outer sleeve 208 automatically as the coupling member 116 moves towards the engaged position.
    [051] The actuator portion 320 can have a locking edge 325 and a locking ramp 326. The locking edge 325 can be a ramp or ramps, elliptical, a radius or corner of the coupling member that is fitted by the ramps ( or corresponding combined surfaces) 302a and / or 302b of the plug actuator 224. As shown, the plug edge 325 has two plug ramps 328a and 328b. Ramps 328a and 328b can mirror the slope of ramps 302a and 302b, or have another slope.
    [052] The release ramp 326 can be configured to be engaged by the ramp 302c of the release actuator 226. As shown, the release ramp 326 projects into the actuator cavity 222. As the release actuator 226 moves upward , the ramp 302c fits into the disengaging ramp 326. A continuous linear movement of the disengaging actuator 226 moves the engaging member 116 towards the disengaged position through the
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    16/31 release ramp 326.
    [053] Figure 4 is a schematic perspective view of the coupling member 116 according to an embodiment. As shown, the coupling member 116 is a C 400 ring. The C 400 ring can have a space 402 which is collapsed, as the plug actuator 224 moves the ring in
    C 400 towards the engaged position. The C 400 ring can naturally be in the disengaged position. Therefore, as the plug-in actuator 224 collapses the space 402 and moves the engaging member 116 towards the engaged position, the engaging member is oriented towards the disengaged position. The C-ring acts as an energizing spring (i.e., so that space 402 allows the C-400 ring to be compressed and pop out). Therefore, typically, when the locking actuator 224 is moved free of the engaging member 116, the engaging member 116 will move to the disengaged position. In addition to slits 220 (as shown in figure 2), the C 400 ring can have any number of slits, or windows through there, to allow fluid to pass as the C 400 ring moves between the seated position and the detached. Although the C-ring
    400 is described as being oriented towards the disengaged position, it should be appreciated that it can be oriented towards the engaged position. The orientation of the closed hitch member can act as a fail-safe feature in case the fluid pressure is lost in the plug actuator 224 or a piston while the oil field equipment 104 and / or the outer sleeve 208 are attached. The closed orientation would prevent the oil field equipment 104 and / or the outer sleeve 208 from becoming
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    17/31 inadvertently released.
    [054] Figure 5 depicts a schematic top view of an alternative hitch member 500. The alternative hitch member 500 may have several locking tabs 502 for movement to engage with oilfield equipment 104 through a window 504 in the hitch housing 200. The alternative hitch members 500 may have several actuators 118 located radially around the hitch housing 200, or there may be annular actuators as described above that fit into each of the locking tabs 502. Any actuator including those described here can be used. The locking tabs 502 may have one or more guiding members 506 configured to guide the locking tabs 502 toward the disengaged position. The guiding member can be a spiral spring, a leaf spring, an elastomeric member, a fluid orientation, and the like. It should be appreciated that one or more guiding members 506 can be used in conjunction with any of the engaging members 116 described herein. In addition, the guiding member 506 can be used to guide the alternative engaging member 500 towards the engaged position.
    [055] A hitch 102 operation will now be described together with the figures. Figure 3 describes the coupling 102 in the disengaged position. In the disengaged position, the plug-in actuator 224 can be against the terminal end of the actuator cavity 222. The engaging member 116 can remain in the disengaged position due to the orientation of the engaging member 116. Sensors 119 can indicate that
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    18/31 the plug-in actuator 224 is in the disengaged position. In the undocked position, oil field equipment 104, or outer sleeve 208 can be optionally moved to or out of housing 114. Hitch 102 can remain in the undocked position until the operator and / or controller 120 determines that the oil field equipment 104 is in position or needs to be engaged.
    [056] Figure 6 describes the coupling 102 in an intermediate position. The fluid pressure was increased in the fluid chamber 301a. The increased fluid pressure moves the locking actuator 224 to locking with the locking edge 325 of the coupling member 116. The greatly inclined ramp 328a can quickly move the coupling member 116 towards the engaged position. The engagement flange 304 can engage the end 306 of the release actuator 226, thereby moving the release actuator 226 free of the engaging member 116. Sensors 119a and 119b at the end ends of the actuator cavity 222 may indicate that the actuator plug-in 224 and release-actuator 226 are not in contact with the end ends. Sensor 119b can measure the exact location of actuators 118.
    [057] Figure 7 describes the coupling member 116 fitting the outer sleeve 208 and / or the oil field equipment 104. The fitting portion 318 can align with the outer sleeve 208 as the coupling member 116 continues its radial course inward. The C 400 ring can compress the space 402 (as shown in figure 4). The ramp 302b having a lower slope can be fitted with the docking ramp 328b, thereby
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    19/31 reducing the radial velocity into the engagement member 116 versus the locking actuator 224. The continued linear movement of the locking actuator 224 will slowly align with the outer sleeve 208 and fit with the locking member 116. The sensor 119b you can continue to track the location of actuators 118.
    [058] Figure 8 describes the coupling member 116 in the engaged position. In the engaged position, the locking actuator 224 moved the engaging member 116 radially inward as it can run into locking with the outer sleeve 208. As shown, the ramp 302a is engaged with the locking ramp 328a, although it must be appreciated that there may be a space between these ramps. This release actuator 226 can be fitted with the end end of actuator cavity 222, or there may be a space between them. The sensor 119c can detect that the release actuator 226 has reached the terminal end and, thus, the locked position. The sensor 119b can continue to track the location of the actuators 118 and, thus, the coupling member 116.
    [059] Figure 9 describes a position in which the hitch member 116 is clamped, gripped, held, stuck, pinned, stranded or so shocked that it will not jump to the disengaged position or the release position. The release actuator 226 moved the lock actuator 224 to be free of the engaging member 116 with a fluid pressure applied from the fluid chamber 301b. Coupling member 116, however, did not move or jump to the disengaged position, due to the fact that it was trapped, gripped, held, stuck or wedged in housing 200. One
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    20/31 continued movement of detach actuator 226 forces directly or engages detach ramp 326 with ramp 302c of detach actuator 226. Ramp 302c then positively moves engagement member 116 radially towards the detached position with linear motion release actuator 226. Sensor 119b can
    will continue track back the localization From actuators 118 and, thus, the coupling member 116. [060] A figure 10 describes the member hitch 116 at undocked position after the actuator in undock 226 Tue
    positively removed the engaging member 116. In this position, the tip 306 of the release actuator 226 pushed the locking lip 304 and, thus, the locking actuator 224 to the end end of the actuator cavity 222. The locking member 116 it is in the disengaged position and is prevented from moving towards the engaged position by the disengaging ramp 326 and the ramp 302c. Sensor 119a can determine that plug-in actuator 224 fits into the end end of actuator cavity 222 and sensor 119b can check the position of actuators 118. Coupling 102 can remain in this position as long as outer sleeve 208 and / or equipment oil field 104 is removed from housing 114. The operator and / or controller 120 can then place another piece of oil field equipment 104 on the RCD and hitch 102 can be actuated to secure oil field equipment 104 with the coupling member 116.
    [061] Figure 11 describes a cross-sectional top view of the coupling 102 with the C-ring coupling member 116 in the disengaged position. The equipment for
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    21/31 oil field 104 is shown positioned in housing 114 for engagement with engagement 102. A portion of disengagement actuator 226 is shown surrounding the engagement member 116. Sensor 119b monitors the location of disengagement actuator 226 as it travels on actuator cavity 222.
    [062] Figure 12 describes the cross-sectional top view of the coupling 102, as shown in figure 11 with the C 400 ring coupling member 116 in the engaged position. As plug actuator 224 (shown in figures 2 to 10) moves engagement member 116 radially inward, space 402 is closed and oil field equipment 104 is engaged by engagement 102. Sensor 119b can identify the location of the release actuator 226 and, thus, of the coupling member 116 is positive.
    [063] Figures 13A and 13B represent an alternative embodiment of the coupling 102 of figure 1. The coupling 102 in this embodiment can have an actuator 118 configured to move the coupling member 116 towards the engaged position and towards the disengaged position, depending the travel direction of actuator 118. Sensor 119b can determine the position of actuator 118 as it travels in actuator cavity 222. The interaction between actuator 118, or the piston, and the engaging member 116, or the locking, it can have a dovetail arrangement 1300 (with inclined elevations in a slit 1302) for movement of the specific mechanical compression ratio in and out. Actuator 118 and engagement member 116 can be annular, or can have multiple actuators and / or engagement members 116 for
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    22/31 coupling of oil field equipment 104.
    [064] In another embodiment shown in figure 14, the coupling member (s) 116 can be driven by a piston that has a 600 connection system. Although not limited to this, in this case six to eight coupling members (locking tabs) 116 can be implemented and alternated circumferentially around the coupling housing 200. Connection system 600 can push coupling member 116 into the engaged position when actuator 118 travel in a first direction, and can pull the latch member 116 towards the disengaged position when the actuator 118 travels in the opposite direction. In the embodiment shown, connection system 600 includes a connecting arm or follower 610 with a pin connection 604a to the coupling member 116. Connection 610 has another pin connection 604b with an optional roller 606. The actuator may include a ramp (s) or interface (s) 602 to push (s) ramp (s) 328. Optionally, actuator 118 has a groove 608. The groove 608 allows the movement of the roller 606 (if included) during an operation. Actuator 118 can be actuated, for example, hydraulically or pneumatically. The connection system 600 converts an axial movement of the actuator 118 into a radial movement of the coupling member 116 (for example, when the actuator 118 is moved axially upwards in the shown mode, connection 610 pulls the coupling member 116 to retract the hitch). If slot 608 is eliminated, both pin connection points 604a and 604b will be fixed, and ramp 602 could be eliminated (in which case connection 610 could act to engage and disengage (ie, push and
    Petition 870200038284, of 03/23/2020, p. 34/53
    23/31 retract the coupling member 116), and furthermore, in which case the connection 610 could optionally be made to include some elasticity, such as, for example, in a shock absorber).
    [065] In other embodiments, the coupling member 116 can be radially driven between the engaged and disengaged position, using one or more radial rods 700. The radial rod (s) 700 can (m ) be built in the housing 114, or it can (m) project from the housing 114, in order to boost (in) the coupling member 116. Although not limiting, in this modality, from six to eight coupling members (locking tabs) 116 can be implemented and alternated circumferentially around the engagement housing 200. In the embodiment shown in figures 15 to 16, the end 704 or the stem 700 is affixed to the engagement member 116, and the end 706 protrudes from housing 114. A cover 708 is attached to the end 706 with a spring 710 mounted around the stem 700 between the cover 708 and the housing 114. Actuator 118 has a slot 712 for accommodating the stem 700, as per actuator 118 moves axially between housing 200 and housing 114. One if it or a sealing plug 714 is positioned around the stem 700 in the channel 716 through the housing 114. The stem 700 can be oriented (that is, by the spring 710) to retract or engage through the coupling member 116. The actuator 118 can be actuated, for example, hydraulically or pneumatically. Actuator 118 functions as a first actuator (piston) which moves coupling member 116 inwardly to the engaged position through an interaction of the (s)
    Petition 870200038284, of 03/23/2020, p. 35/53
    24/31 ramp (s) or interface (s) 328 and 702. Then, as actuator 118 is moved axially upward in the figure, actuator 118 through or because of slot 712 moves independently of (merely moves without a direct causal effect on the hitch member 116. Then, the oriented rod 700 acts as a second actuator to physically move the hitch member 116 to the retracted position.
    A variant for this modality is that the course of the stem 700 projecting through the housing 114 can be detected directly by means of detection 119d (that is, detected by a sensor measuring position or distance, and / or visually inspected), so to provide an indication of the travel or position of the coupling member 116 (therefore, the position and / or the travel of the coupling member 116 are detected directly, that is, not inferred by monitoring the flow of a hydraulic fluid, etc. .). Additionally, if the coupling member 116 has not fully retracted, it would have been possible to pull the stem 700, in order to move the stem 700. The thrust can be obtained by the actuation of an additional mechanical or hydraulic tool, for example, a piston (not shown), located outside housing 114, or can be performed manually by an operator. In another variation, the stem 700 can be actuated by a second actuator similar to the release actuator 226 (shown in figure 6), instead of by the spring 710. In another variation, the coupling member
    116 can be engaged and retracted by the actuation of the rod 700 through a piston (radially) mounted outside the housing 114.
    [066] In the mode shown in figures 17 and 18, the
    Petition 870200038284, of 03/23/2020, p. 36/53
    25/31 radial rod (s) 700 is (are) shown (s) constructed and fully contained (s) in housing 114. The end 704 or rod 700 is affixed to the engaging member 116, and the end 706a is contained within the housing 114. A slide head 708 is secured or formed at the end 706a with a gripper 710 mounted around the rod 700 between the slide head 708 and the housing 114. Actuator 118 has a slot 712a that includes a inclined elevation 718 to accommodate the slide head 708 and stem 700, as the actuator 118 moves axially between housing 200 and housing 114. A sliding base (such as, for example, a washer) 720 can be positioned around of the stem 700 as part of the sliding head 708 and rises on the inclined elevation 718. The stem 700 is oriented (that is, by the spring 710) to retract the coupling member 116. The actuator 118 can be, for example, actuated hydraulically or pneumatic. Actuator 118 functions as a first actuator (piston), which moves coupling member 116 inwardly to the engaged position (figure 17) through an interaction of the ramp (s) or interface (s) 328 and 702 Then, as the actuator 118 is moved axially upward in the figures, the actuator 118 through the T-slot 712a merely moves without a direct causal effect on the engaging member 116. Then, the oriented stem 700 (through a interaction between the sliding head 708, the inclined elevation 718, the sliding base 720 and the spring 710) functions as a second actuator to physically move the engaging member 116 to the retracted position. This modality eliminates the need to provide a seal 714 (figures 15 to 16) between housing 114 and the
    Petition 870200038284, of 03/23/2020, p. 37/53
    26/31 rod 700.
    [067] The modality shown in figures 19 and 20 is similar to the modalities shown in figure 13A, except that the dovetail arrangement 1300 is replaced by a rod 700 which rises in a T-slot or slot 608. A shank 700 can be configured as a sliding head 708a (such as, for example, in the form of a T-shaped member or as a claw, and / or can be connected to a roller 606). Although not limiting, in this modality, six to eight coupling members (locking tabs) 116 can be implemented and alternated circumferentially around the coupling housing 200. The mode of figures 19 and 20 converts the axial movement of the actuator 118 into movement of the coupling members 116 for fitting and retracting the coupling members 116.
    [068] The modality shown in figures 21 and 22 is similar in shape and function to the modality shown in figures 3 and 6. A plug actuator 224 and a plug actuator 226 are shown. The plug-in ramp (s) 328a, b and c with the ramp (s) / interface (s) 302a and b are shown. The release actuator 226 includes the ramp / interface 302c, while the latch member 116 includes the ramp / release interface 326.
    [069] In the embodiment shown in figure 23, the coupling member 116 can be driven radially between the engaged and the engaged position using one or more pistons / actuators 800. Each piston 800 forms a single unit piston combined or integrated with a piston head 804 in conjunction with a rod / hitch member 116. Unit piston 800 can be mounted in a radial bore 806 in the
    Petition 870200038284, of 03/23/2020, p. 38/53
    27/31 housing 114 in order to propel the coupling member 116. While not limiting, in this embodiment, four to eight coupling members (locking tabs) 116 can be implemented and alternated circumferentially around the coupling housing 200. One spring 810 (optionally in conjunction with well bore pressure) can act as a second actuator for guiding the coupling member 116 to the disengaged position. A hydraulic or pneumatic pressure can be communicated to the orifice 812 and a sufficient pressure will overcome the force of the spring 810 (together with the well-hole pressure) to force the piston 800, and, therefore, the coupling member 116 for the docked position. As suggested, coupling member 116 is released by relieving hydraulic or pneumatic pressure in hole 812, until spring force 810 (in conjunction with well-hole pressure, if any), retract coupling member 116 for release of oil field equipment item 104. A seal 814 (e.g., an O-ring) can be mounted around piston 800 to seal actuator cavity 222. The base 116a of the engaging member 116 is preferably rectangular.
    [070] In the mode shown in figure 24, the spring (s)
    900 (such as, for example, the leaf spring arm (s)) is (are) shown (s) constructed and fully contained in the housing 200, and the (s) ) hitch member (s) 116 in the respective leaf spring receptacles 902 and 904. Note that a lip 906 constructed in the hitch member (s) defines the leaf spring receptacle 904 in the member (s) ) coupling 116. This modality could include multiple individual leaf spring arms 900 or
    Petition 870200038284, of 03/23/2020, p. 39/53
    28/31 900 leaf spring arms could be machined (for example, five to sixteen leaf spring arms could be machined in a single annular leaf spring device). Coupling member 116 is oriented (i.e., by spring (s) 900) to retract coupling member 116. Actuator 118 can be actuated, for example, in a hydraulic or pneumatic manner. Actuator 118 functions as a first actuator (piston), which moves coupling member 116 inwardly to the engaged position (as shown in figure 24) through an interaction of the ramp (s) or interface (s) 328 and 302. Then, as the actuator 118 is moved axially upward in the figure, the force of the actuator 118 is removed from the outer circumference of the coupling member 116. Then, the oriented spring (s) 900 (through an interaction between the respective leaf spring receptacles 902 and 904, since they correspond to the housing 200 and the coupling member 116, and, more specifically, by forcing the flange 906 of the coupling member 116 in relation to the housing 200 ) act as a second actuator to physically move the engaging member 116 to the retracted position.
    [071] For each represented modality, those having a common knowledge in the technique can discern systems to meet several options, that the actuator 118 can be oriented to an embedded position; the actuator can be oriented to a disengaged position; the coupling member (s) 116 can be oriented to the engaged position; and / or the hitch member (s) 116 can be oriented to the unengaged position.
    [072] Exposure of U.S. Patent Application Serial No.
    Petition 870200038284, of 03/23/2020, p. 40/53
    29/31
    12/643093, published as US2010 / 0175882 thus is incorporated as a reference (see, for example, figure 6A of that exhibition) for teaching and exhibition purposes that three (for example) parallel coupling members could be implemented in a system combination hitch.
    [073] Figure 25 describes a flow chart describing a method of using coupling 102. The flow chart starts at block 1402, in which an item of oil field equipment 104 is installed in a housing. The flow chart continues at block 1404, where a first force is applied to an actuator 118 to move the actuator 118. The flow chart continues
    on the block 1406 in what the first force is transferred The from the actuator 118 for a member of hitch 116. THE flowchart to be continued at the block 1408, where the member in
    latch 116 is moved to a radially engaged position in which it is engaged with the liner item 104. The flow chart continues at block 1409, where it is determined whether the position of the actuator is to be monitored. If the position of the actuator is to be monitored, the flowchart will continue with the optional step shown in block 1410, where the position of the actuator 118 is monitored while the actuator moves. The position can be monitored during the movement of the coupling radially inward and / or radially outward. The flowchart continues with the optional step shown in block 1412, where the position of the coupling member 116 is determined from the position of the actuator 118. Regardless of whether or not the position of the actuator is to be monitored, the flowchart remains in the block 1414, in which a second force is applied to the actuator 118 for movement of the actuator. The flowchart continues at block 1416, where the
    Petition 870200038284, of 03/23/2020, p. 41/53
    30/31 second force is transferred from actuator 118 to coupling member 116. The flowchart continues in block 1418, in which actuator 118 is moved radially and detached from oil field equipment item 104. Optionally, during using hitch 102, controller 120 can prevent the removal of oil field equipment while actuator 118 is engaged with oil field equipment item 104. The controller can actively prevent the removal of oil field equipment 104, thereby preventing inadvertent damage to coupling 102 and / or oil field equipment (for example, the controller can control a secondary drilling system, for example, by preventing the pressure regulator from being closed).
    [074] Figure 26 shows another embodiment of a hitch 102 in which the actuator or actuators 118 cause the hitch member 116 to move outwardly to engage the oil field equipment item 104 to be engaged, and move inward to retract hitch member 116. The specific modalities above for fitting and retracting can be implemented to obtain this more schematic modality. In the schematic embodiment of figure 26, coupling member 116 and actuator (s) 118 are mounted on an internal item of oil field equipment 127 for selectively fitting an external item of oil field equipment. oil 104.
    [075] Although the modalities are described with reference to various implementations and explorations, it will be understood that these modalities are illustrative and that the scope of the inventive subject is not limited to that.
    Petition 870200038284, of 03/23/2020, p. 42/53
    31/31
    Many variations, modifications, additions and improvements are possible. For example, the implementations and techniques used here can be applied to any coupling member at the well site, such as in BOP and the like.
    [076] Several instances can be provided for components, operations or structures described here as a single instance. In general, the structures and functionality presented as separate components in the example configurations can be implemented as a combined structure or component. Similarly, the structures and functionality presented as a single component can be implemented as separate components. These and other variations, modifications, additions and improvements may fall within the scope of the inventive subject.
    权利要求:
    Claims (9)
    [1]
    1. Apparatus for coupling an item of security equipment
    oil field, characterized fur fact that comprises: a housing (200); a hitch member (116) contained in the housing (200), the hitch member (116) mobile in between an position radially fitted to the which one it's embedded like item of
    oil field equipment (104), and a radially retracted position in which it is detached from the oil field equipment item (104);
    a first actuator (118, 224) configured to drive the coupling member to the radially engaged position; and a second actuator (118, 224) configured to positively force the engagement member towards the radially retracted position;
    wherein the housing defines a slot (220), where the slot (220) is defined in a selected position of the group consisting of a coupling member (116), below the coupling member (116), and above and below the member coupling (116), where the slot is configured to relieve an amount of waste and / or a volume of fluid.
    [2]
    2. Apparatus according to claim 1, characterized in that the second actuator comprises a connection (610) pinned to the coupling member (116) at one end and pinned to the first actuator (118) at the other far end; and in which the coupling member is driven to the radially retracted position by pulling the first actuator (118) in the connection (610) and pulling from the
    Petition 870200038284, of 03/23/2020, p. 44/53
    2/9 connection (610) to the coupling member (116).
    [3]
    3. Apparatus according to claim 1, characterized by the fact that the second actuator comprises a radial rod (700) affixed at one end to the coupling member (116), and a spring (710) oriented between the housing and a cover (708) located at the other end of the radial stem;
    wherein the engagement member is driven to the radially engaged position by engagement in a first contiguous interface between the first actuator (118) and the engagement member (116); and wherein the engagement member is driven to the position radially retracted by the spring (710) by orienting the radial stem (700) and the engagement member (116) away from the housing.
    [4]
    4. Apparatus, according to claim 3, characterized by the fact that the housing has a channel;
    wherein the radial rod passes through the channel (716) and protrudes from the housing; and wherein a seal (714) is mounted on the channel (716) between the housing and the radial rod (700).
    [5]
    5. Apparatus, according to claim 4, characterized by the fact that it also includes a means (119d) for direct detection of the position of the radial rod mounted in the housing.
    [6]
    6. Apparatus, according to claim 1, characterized by the fact that the first actuator (118) has an elevation (718) in another slot (712a) defined radially through the first actuator; wherein the second actuator comprises a radial stem (700) affixed at one end to the coupling member (116), and a
    Petition 870200038284, of 03/23/2020, p. 45/53
    3/9 trolley (708) located at the other end of the radial rod; wherein the engagement member (116) is driven to the radially engaged position by engagement in a first contiguous interface between the first actuator (118) and the engagement member (116); and in which the coupling member (116) is driven to the radially retracted position by the cart head (708) rising in the elevation (718) as the first actuator is driven in an axial direction.
    [7]
    7. Apparatus, according to claim 1, characterized by the fact that the first actuator (118) has an elevation in another slot defined in the first actuator; wherein the second actuator comprises a dovetail arrangement (1300) located at one end of the coupling member (116); wherein the engagement member is driven to the radially engaged position by engagement in a first contiguous interface between the first actuator (118) and the engagement member (116); and where the coupling member (116) is driven to the radially retracted position by the dovetail arrangement (1300) rising in the elevation,
    according the first actuator (118) is triggered in an direction axial. 8. Females, in wake up with the claim 1, characterized by fact that the member hitch (116) it's the first actuator (118) in set form a piston unitary (800); on what the unit piston (800) has one head piston (804 ); in that the accommodation defines one
    radial orifice (806); and wherein the second actuator comprises a spring (810) mounted in the radial hole between the piston head and the housing.
    9. Apparatus according to claim 1,
    Petition 870200038284, of 03/23/2020, p. 46/53
    4/9 characterized by the fact that the coupling member has a shoulder (906); wherein the second actuator comprises a leaf spring arm (900) oriented between the housing (200) and the lip; wherein the engagement member (116) is driven to the radially engaged position by engagement in a first contiguous interface (328) between the first actuator (118) and the engagement member (116); and wherein the engagement member is driven to the radially retracted position by the leaf spring arm (900) guiding the lip (906) and the engagement member (116) away from the housing.
    10. Apparatus according to claim 1, characterized by the fact that the slot is an annular slot (220) configured to relieve a quantity of pressure and / or a quantity of residue.
    11. Apparatus, according to claim 1, characterized by the fact that:
    wherein the engagement member is oriented to a position corresponding to the radially engaged position of the engagement member at a first contiguous interface between the first actuator (224) and the engagement member (116);
    wherein the engagement member is oriented to a position corresponding to the radially engaged position of the engagement member at a second contiguous interface between the second actuator (224) and the engagement member (116);
    wherein the first contiguous interface includes a first locking ramp (328a) and a second locking ramp (328b) on the engagement member (116);
    wherein the engaging member further includes a third locking ramp (328c); and where the coupling member is held in position
    Petition 870200038284, of 03/23/2020, p. 47/53
    5/9 radially fitted by a storing position by fitting into a third contiguous interface between the first actuator (224) and said third fitting ramp (328c).
    12. Apparatus, according to claim 1, characterized by the fact that:
    wherein the engagement member is oriented to a position corresponding to the radially engaged position of the engagement member at a first contiguous interface between the first actuator (224) and the engagement member (116) with the engagement occurring in a first axial direction;
    wherein the engagement member is driven to the radially retracted position by another fitting at a second contiguous interface between the second actuator (226) and the engagement member (116) with the other fitting occurring in a second axial direction; and wherein the engagement member is held in the radially engaged position by a storing position through engagement in a third contiguous interface (328c) between the first actuator (224) and the engagement member (116) with the engagement occurring in the first axial direction.
    13. Apparatus for coupling an item of oilfield equipment (104), characterized by the fact that it comprises:
    a housing (200) having an opening (218);
    an engaging member (116) contained in the housing (200), the engaging member (116) movable within the opening (218) between a radially engaged position in which it is engaged with the oil field equipment item (104), and a radially retracted position in which it is
    Petition 870200038284, of 03/23/2020, p. 48/53
    6/9 detached from the oil field equipment item (104);
    a first actuator (118, 224) configured to drive the coupling member to the radially engaged position; and a second actuator (118, 226) configured to positively force the engagement member towards the radially retracted position;
    wherein the housing defines a slot (220) formed at the top and / or bottom of the opening (218), at least one slot being arranged to allow fluids to pass through them while the engaging member passes between the radially engaged position and the radially retracted position.
    14. Females, in according to claim 13, characterized by fact in that at one less crack is arranged to relieve a amount of waste and / or a volume of fluid.
    Apparatus according to claim 13 or 14, characterized in that at least one slot is adjacent to the coupling member (116).
    16. Apparatus according to claim 13 or 14, characterized in that the first actuator comprises a plug-in actuator (224), wherein the plug-in actuator includes a plug-in ramp (302a, 302b);
    the second actuator comprises a release actuator
    (226) includes a ramp in impact (320c); andwhere the member in hitch has an edge in fit (325) filed in between The actuator plug-in and the actuator detach for to move The member hitch for The position
    Petition 870200038284, of 03/23/2020, p. 49/53
    7/9 radially engaged through the docking ramp and to move the coupling member to the radially retracted position through the impact ramp.
    17. Apparatus according to claim 13 or 14, characterized by the fact that it still comprises at least one sensor (119) for monitoring the position of at least one of the first actuator and the second actuator and, thus, determining the position of the coupling member.
    18. Apparatus according to claim 17, characterized by the fact that it still comprises a flow meter including a means for determining the position of the first and second actuators and, thus, of the coupling member (116).
    19. Apparatus according to claim 17, characterized by the fact that it still comprises at least one controller (120) to control the first actuator.
    20. Apparatus according to claim 19, characterized in that at least one controller is arranged to control a clamping device (122) in a pit location (100) and in which the clamping device (122) is arranged to be prevented from operating when the engagement member (116) is in the radially engaged position as determined by at least one sensor.
    21. Apparatus according to any one of claims 13 to 15, characterized by the fact that the coupling member is driven to the radially engaged position by fitting in a first contiguous interface between the first actuator and the coupling member, and in that the coupling member is driven to the radially retracted position by fitting into a second contiguous interface
    Petition 870200038284, of 03/23/2020, p. 50/53
    [8]
    8/9 between the second actuator and the coupling member.
    22. Apparatus according to any one of claims 13 to 15, characterized in that the coupling member is actuated to the radially engaged position by fitting in a first contiguous interface between the first actuator and the engaging member with the fitting occurring in a first axial direction; and wherein the coupling member is driven to the radially retracted position by another fitting at a second contiguous interface between the second actuator and the coupling member with the other fitting occurring in a second axial direction.
    23. Apparatus according to any of claims 13 to 15, characterized by the fact that:
    a) the radially engaged position is an inward position and the radially retracted position is an outward position; or
    b) the radially engaged position is an outward position and the radially retracted position is an inward position.
    24. Apparatus for coupling an item of oilfield equipment, characterized by the fact that it comprises:
    a housing (200);
    a coupling member (116) contained in the housing (200),
    the member in movable hitch between an position radially embedded, at which is fitted like item of equipment field in oil (104), and an position radially retracted, at which is detached from the item of equipment
    oil field;
    an actuator configured to drive the
    Petition 870200038284, of 03/23/2020, p. 51/53
    [9]
    9/9 hitch (116) to the radially engaged position;
    where the actuator configured to drive the coupling member (116) to the radially retracted position, and where the actuator comprises:
    a plug-in actuator (224), the plug-in actuator includes a plug-in ramp (302a, 302b);
    wherein the engaging member (116) has a engaging edge (325) interposed between the engaging actuator and the disengaging actuator to move the engaging member (116) to the radially engaged position via the engaging ramp and to move the coupling member to the radially retracted position through the impact ramp;
    wherein the locking edge (325) of the engagement member (116) comprises a first locking ramp (328a), a second locking ramp (328b), a third locking ramp (328c); wherein said first engaging chute (328a) and said second engaging chute (328b) are configured to move the engaging member (116) to the radially engaged position; and wherein the third locking ramp (328c) is configured to hold the engagement member (116) in a position to hold when the engagement member (116) is in the radially engaged position.
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    同族专利:
    公开号 | 公开日
    US20150226025A1|2015-08-13|
    US9010433B2|2015-04-21|
    WO2012007928A3|2012-04-12|
    US9518436B2|2016-12-13|
    AU2016202052B2|2017-09-21|
    AU2011277937A1|2013-01-31|
    CA2805630C|2017-10-03|
    AU2011277937B2|2016-01-07|
    WO2012007928A2|2012-01-19|
    US20120013133A1|2012-01-19|
    BR112013000999A2|2017-11-14|
    CA2948282A1|2012-01-19|
    AU2016202052A1|2016-04-28|
    EP2593636A2|2013-05-22|
    EP3540176A1|2019-09-18|
    CA2805630A1|2012-01-19|
    CA2948282C|2018-11-20|
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    法律状态:
    2018-03-13| B25A| Requested transfer of rights approved|Owner name: WEATHERFORD TECHNOLOGY HOLDINGS LLC (US) |
    2018-10-02| B25D| Requested change of name of applicant approved|Owner name: WEATHERFORD TECHNOLOGY HOLDINGS, LLC (US) |
    2018-12-26| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-07-16| B06T| Formal requirements before examination|
    2019-12-24| B07A| Technical examination (opinion): publication of technical examination (opinion)|
    2020-03-31| B09A| Decision: intention to grant|
    2020-06-02| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 15/07/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US36528810P| true| 2010-07-16|2010-07-16|
    US61/365,288|2010-07-16|
    PCT/IB2011/053175|WO2012007928A2|2010-07-16|2011-07-15|Positive retraction latch locking dog for a rotating control device|
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