• 专利附录
  • 专利说明
  • 权利要求
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    • 专利摘要:
    NUCLEAR MAGNETIC RESONANCE APPLIANCE, AND METHOD. Only provided methods and systems, which allow profiling NMR measurements during drilling to be made with magnets placed outside the drilling command and magnetically permeable elements, to control the gradient of the magnetic field. A group of magnets can be arranged and / or embedded in a drilling command, with an antenna axially disposed between them. Alternatively, a group of magnets and an antenna arranged between them can be arranged on a jacket, which is slid over a recess in a drilling command. In addition, a permeable element can be axially positioned between the group of magnets to affect the depth of investigation.
    公开号:BR112013012234B1
    申请号:R112013012234-0
    申请日:2011-11-16
    公开日:2021-02-02
    发明作者:Timothy Hopper；David T. Oliver；Anatoly Dementyev
    申请人:Prad Research And Development Limited；
    IPC主号:
    专利说明:

    Background of the Invention Field of the Invention
    The invention relates, in general, to the field of nuclear magnetic resonance tools. More specifically, the invention relates to nuclear magnetic resonance tools with profiling during drilling, having magnets external to the drilling command and magnetically permeable elements to control the gradient of the magnetic field. Background
    Nuclear magnetic resonance (NMR) can be used to determine various characteristics of underground formations and / or samples. NMR profiling tools can be used at the bottom of wells to obtain these characteristics, which can then be used to assist in determining, for example, the presence, absence, and / or location of hydrocarbons in a given formation or sample.
    Conventional NMR profiling, well known in the art, in general, involves the implantation of an NMR tool in a well, which uses magnetic fields to generate and detect various RF signals from nuclei in a formation or sample. Some examples of NMR techniques are described in U.S. Patent No. 6,232,778, attributed to Schlumberger Technology Corp., whose full disclosure is hereby incorporated by reference.
    NMR measurements, in general, are performed, causing the magnetic moments of the nuclei in a formation to precede around the axis. The axis, around which the precession of nuclei can be established by the application of a strong static magnetic field, of B0 polarization, in the formation, as well as through the use of permanent magnets.
    In conventional NMR tools with profiling during drilling (LWD), these permanent magnets are usually placed inside the drill command, which provides a protective housing for the magnets and other components of the NMR tools. This protection can be useful to reduce the risk of perforation damage, in terms of impact and wear. Such conventional tools may involve the construction of the magnets in a housing, to provide a structure for the magnets to be attached to it. This structure can decrease the volume of magnetic material, which can be used. This is critical for NMR, as the signal-to-noise ratio (SNR) varies depending on the intensity of the magnetic field and the gradient of the magnetic field. Other disadvantages, such as difficult accessibility of the magnets and other components of the NMR tool, also exist with conventional LWD systems, which place the NMR magnet assemblies within the 3-drill command.
    US 6218833 describes a temperature compensated nuclear magnetic resonance apparatus and method. US 2010/283459 describes the determination of geological properties of subsurface formations using NMR methods for profiling wells, particularly to correct the effects of fluid flow during underbalanced drilling in NMR signals. EP 0940688 describes a nuclear magnetic resonance apparatus and a method for generating an axisymmetric magnetic field with long, straight contour lines in the resonance region. WO 0047869 describes a method and apparatus for protecting an impact and abrasion sensor when drilling a well. US 2002/153888 describes the use of a specialist downhole system for the acquisition and evaluation of NMR measurements contemporary to well drilling and the use of a surface downlink communication to modify the parameters of the acquisition system rock bottom.
    Therefore, there is a need in the art for methods and systems for obtaining NMR measurements, which overcome one or more of the deficiencies, which exist with conventional methods. Summary of the Invention
    The present invention resides in a nuclear magnetic resonance apparatus as defined in claim 1 and in a method as defined in claim 7.
    Other aspects and advantages of the invention will be apparent from the following description and the appended claims. Brief Description of Drawings
    Figure 1 illustrates a well region system, in which the present invention can be employed, according to an example of an embodiment.
    Figure 2 shows an embodiment of a type of device for assessing formation during drilling using NMR.
    Figure 3 is a schematic diagram, which illustrates magnets embedded in a drilling command, according to an example of an embodiment.
    Figure 4 is a schematic diagram, which illustrates magnets and an antenna on the shirt arranged over a drilling command, according to an example of an embodiment.
    Figure 4A is a schematic diagram, which illustrates the magnetic assembly of Figure 4 with the addition of magnetic and non-magnetic parts in the flow line, according to an example of an embodiment.
    Figure 5 is a diagram of two magnets reproduced in a set of axes, according to an example of a realization form.
    Figure 6 is a graph, which illustrates an effect of the magnet's cross section (and, by inference, of the volume) on the intensity of the magnetic field, according to an example of an embodiment.
    Figure 7 is a graph, which illustrates the field profile along the radial direction of the magnetic assembly of Figure 5, according to an example of an embodiment.
    Figure 8 illustrates a permeable element magnetically disposed between two magnets, according to an example of an embodiment.
    Figure 9A illustrates a magnetically permeable element divided into rings disposed between two magnets, according to an example of an embodiment.
    Figure 9B is a graph, which illustrates the magnetic field profile along the radial direction of the magnetic assembly of Figure 9A, according to an example of an embodiment.
    Figure 9C is a graph, which illustrates the equipotential magnetic lines of the magnetic set of Figure 9A, according to an example of an embodiment.
    Figure 10 illustrates a simulated NMR slice of a magnetic field generated by a magnetic array, such as that of Figure 9A, according to an example of an embodiment.
    Figure 11A is a graph, illustrating equipotential magnetic lines of an illustrated magnetic assembly with a permeable element, according to an example of an embodiment.
    Figure 11B is a graph, which illustrates equipotential magnetic lines of another illustrated magnetic assembly with a permeable element smaller than that of Figure 11A, according to an example of an embodiment.
    Figure 11C is a graph, which illustrates the magnetic field profile of the magnetic array shown in Figure 11A.
    Figure 11D is a graph, which illustrates the magnetic field profile of the magnetic array shown in Figure 11B. Detailed Description
    The invention provides systems and methods, which allow the execution of profiled NMR measurements during drilling, with magnets placed outside the drilling command and magnetically permeable elements, to control the gradient of the magnetic field. Various examples of methods and systems will now be described with reference to Figures 1-10, which show representative and illustrative embodiments of the invention.
    Figure 1 illustrates a well region system, in which the present invention can be employed, according to an example of an embodiment. The pit region can be on land or offshore. In this example of a system, a well 11 is opened in underground formations 106, by rotary drilling in a manner, which is well known. Embodiments of the invention may also use directional drilling, as will be described later.
    A drill string 12 is suspended inside well 11 and has a bottom composition 100, which includes a drill 105 at its lower end. The surface system includes the platform and tower set 10 positioned on the well 11, the set 10 including a rotary table 16, kelly 17, hook 18 and injection head 19. The drill column 12 is rotated by the rotating table 16, energized by means not shown, which engages the kelly 17 at the upper end of the drill string. The drilling column 12 is suspended by a hook 18, attached to a catarina (also not shown) through the kelly 17 and an injection head 19, which allows the rotation of the drilling column in relation to the hook. As is well known, a top drive system can be used alternatively.
    In the example of this embodiment, the surface system still includes drilling fluid or mud 26 stored in a tank 27 formed at the well site. A pump 29 delivers the drilling fluid 26 into the drilling column 12 through an injection head 19, causing the drilling fluid to flow down through the drilling column 12, as indicated by directional arrow 8. The fluid drill bit leaves drill hole 12 through openings in drill 105 and then circulates upwards through the annular region between the outside of the drill column and the wall of well 11, as indicated by directional arrows 9. In this well-known mode, the drilling fluid lubricates drill 105 and drives cuts from formation 106 up to the surface, where it is returned to tank 27, for recirculation.
    In various embodiments, the systems and methods described herein can be used with any means of transport known to those of ordinary skill in the art. For example, the systems and methods described here can be used with an NMR tool driven by the fixed network, steel cable, drill pipe transport, and / or a transport interface during drilling. For the purpose of example only, Figure 1 represents an interface during drilling. However, the systems and methods described herein can also apply to the fixed network or any other suitable means of transport. The bottom composition 100 of the illustrated embodiment includes a profiling module during drilling (LWD) 120, a measuring module during drilling (MWD) 130, a rotatable and motor system, and drill 105.
    The LWD 120 module is housed in a special type of drilling command, as is known in the art, and can contain one or a plurality of known types of profiling tools. It should also be clear that more than one LWD and / or MWD module can be used, for example, as represented in 120A. (References in the current document to a module at the 120A position may also mean, alternatively, a module at the 120A position). The LWD module includes features for measuring, processing and storing information, as well as for communicating with surface equipment. In the present embodiment, the LWD module includes a nuclear magnetic resonance measuring device.
    The MWD 130 module is also housed in a special type of drill command, as is known in the art, and may contain one or more devices for measuring characteristics of the drill column and drill bit. The MWD tool also includes an apparatus (not shown) to generate electrical energy for the well system. This can normally include a mud turbine generator, fed by the flow of the drilling fluid, it being understood that other energy systems and / or the battery can be employed. In the present embodiment, the MWD module includes one or more of the following types of measuring devices: a weight measurement device on the bit, a torque measuring device, a vibration measuring device, a measuring device of shocks, a sliding barrier measuring device, a steering measuring device, and a slope measuring device.
    Figure 2 shows an embodiment of a type of device for evaluating formation during drilling using NMR, implying that other types of NMR / LWD tools can also be used as the LWD 120 tool, or part of a LWD 120A tool set. Referring to Figure 2, in an example of an embodiment of the invention, hereinafter referred to as a low gradient design, the magnetic assembly comprises an upper magnet 232 axially separated from a lower magnet 234. The area between the magnets 232, 234 it is suitable for housing elements, such as electronic components, an RF antenna, and other similar items. Both magnets 232, 234 surround the shirt 228.
    Magnets 232, 234 can be polarized in a direction parallel to the longitudinal axis of tool 210, with magnetic poles facing each other. For each magnet 232, 234, the magnetic induction lines move outwardly, from one end of the magnet 232, 234, into the formation, to create a static field parallel to the tool axis 210, and move inward to the other end of magnet 232, 234. In the region between upper magnet 232 and lower magnet 234, the magnetic induction lines move from the center outward, into the formation, creating a static field in the direction perpendicular to the tool axis 210. The magnetic induction lines then move inwardly, symmetrically, over the upper magnet 232 and below the lower magnet 234, and converge in the longitudinal direction inside the jacket 228.
    Figure 3 is a schematic diagram showing the magnets 306A, 306B embedded in a drilling command 304, according to an example of an embodiment. In some embodiments, magnets 306A, 306B may be similar to magnets 232, 234 of Figure 2. In some embodiments, magnets 306A, 306B may be embedded in such a way that an entire external surface of magnet 306A, 306B is exposed. As shown in Figure 3, two magnets 306A, 306B can be embedded in the drilling command 304, spaced axially from each other. An RF antenna 308 can also be placed in the axial space between the two magnets 306A, 306B, to generate the B1 field, which is necessary to perform NMR. In the example of embodiments, the drill controller can include recesses to house one or more of the magnets 306A, 306B and the antenna 308. An electronic chassis 302 can also be placed inside the controller 304, and can contact, or be close to de, a drain line 310 (that is, so that mud or other liquids flow into it), or channel disposed inside the control 304.
    A permeable element 312 can also be inserted in the flow line 310, and can be inserted, in general, axially between the two permanent magnets 306A, 306B. As used herein, the term permeable generally refers to magnetic permeability. In an example of an embodiment, as shown in Figure 3, the permeable element 312 can be inserted into the flow line 310, such that the permeable element 312 axially overlaps each of the permanent magnets 306A, 306B, occupying, thus, the entire axial space between the two permanent magnets 306A, 306B. In some embodiments, the permeable element 312 may extend axially from one permanent magnet 306A to the other 306B, but need not overlap with one or both permanent magnets 306A, 306B. In another alternative embodiment, the permeable element 312 need not occupy the entire axial space between the two permanent magnets 306A, 306B. In various examples of embodiments, the permeable element 312 can be made of any material, which has a non-zero magnetic permeability. For example, this can include 1010 steel or 15_5 stainless steel. In addition, as shown in Figure 3, the permeable element 312 may also be arranged axially and / or be in contact with the rest of the flow line 310, which may be made of a non-magnetically permeable element 312.
    In the example of embodiments, the permeable element 312 can include a permeable mandrel located on the flow line 310, inside the tool, which can be used to form the magnetic field. This mandrel can be divided into several permeable and non-permeable rings, which allow the formation of a magnetic field, Bo, and the magnetic field gradient, g. Certain effects of the permeable elements 312 on the shape of a generated magnetic field are disclosed in U.S. Patent No. 6,400,149, the full disclosure of which is hereby incorporated by reference. In addition, the effect of the permeable elements 312 and the spacing of the magnets on the magnetic field and the gradient of the magnetic field will be discussed in more detail below.
    Figure 4 is a schematic diagram showing the magnets 306A, 306B and an antenna 308 on the jacket 416 arranged in a drilling command 304, according to an example of an embodiment. In the example of embodiments, the drilling command 304 can be made up of an upper command 404A and a lower command 404B. Between the upper controls 404A and lower 404b there may be a recess 414, over which the liner 416 can be slid and optionally locked in place. The liner 416 can include two permanent magnets 306A, 306B and an antenna 308, each of which can be slid over the liner 416. In addition, the liner 416 can include a permeable element and / or be made of a permeable material, which it may be of similar composition and function to the permeable element 312 disposed within the flow line 310 of Figure 3. In some embodiments, a permeable element (not shown) can be included in the flow line 310, as in Figure 3. Because the magnets 306A, 306B and antenna 308 are built as a jacket 416, which slides over the LWD 304 control, the 416 shirt can be repaired and replaced separately, instead of the entire 304 control.
    Figure 4A is a schematic diagram, illustrating the magnetic assembly of Figure 4 with the addition of magnetic and non-magnetic parts in the flow line 310, according to an example of an embodiment. As shown in Figure 4A, in some embodiments, flow line 310 may include a combination of magnetic 419 and non-magnetic parts 417. In various embodiments, a variety of different sections of flow line 310 may include magnetic parts 419. The use of magnetic parts 419 in flow line 310 can form the static magnetic field. Magnetic 419 and non-magnetic 417 parts can be used to produce flow line 310, both for embodiments similar to the embodiment illustrated in Figure 3, and similar to the embodiment illustrated in Figure 4, and for other embodiments compatible with this description. In some embodiments, the magnetic 419 and non-magnetic 417 parts can be welded together. Other methods for joining parts 417, 419 together may include threading parts 417, 419 together, or other suitable methods, which may be known to those skilled in the art having the benefit of the present description. The use of magnetic and non-magnetic parts to make the flow line 310 may allow for greater formation and / or homogenization of the magnetic field.
    Figure 5 is a diagram of two magnets 306A, 306B reproduced on a set of axes, according to an example of an embodiment. As shown in Figure 5, non-permeable (soft) magnetic material is placed between magnets 306 A, 306B. In the illustrated embodiment, the cylinders represent two permanent magnets 306A, 306B, with their similar magnetic poles facing each other.
    Whether or not there is a permeable element 312 arranged between magnets 306A, 306B, the field and field gradient created by the two magnets 306A, 306B may vary depending on the spacing and volume of the magnets, as shown in Figures 4-6. In some embodiments, the field can vary in a similar way to the volume of the magnetic material, with a fixed distance between magnets 306A, 306B. This type of magnetic assembly is often used in LWD NMR tools.
    Figure 6 is a graph, which illustrates a cross-sectional effect of the magnet (and, by inference, of volume) on the intensity of the magnetic field, according to an example of an embodiment. The graph shows the intensity of the magnetic field, at a depth of investigation located outside the tool (for example, in a bisector of the magnets, located radially at a certain distance from the longitudinal axis of the magnetic assembly). This graph shows the drastic improvement, which can be obtained in the operational frequency of NMR for a fixed spacing of the magnets and fixed depth of investigation, if the cross-sectional area of the magnets (and, therefore, the volume) is increased.
    Figure 7 is a graph, which illustrates the field profile along the radial direction of the magnetic assembly of Figure 5, according to an example of an embodiment. In other words, the graph illustrates the field profile Bo along the radial direction, from the center of the mandrel. This can be called a gradient field design. This line is from the center of the space between the two magnets 306A, 306B, which extend perpendicular to the long axis of the magnets 306A, 306B. The center of magnets 306A, 306B in the profiling device is at x = 0 ". The field increases to a maximum value, at a point located 1" from the centerline of the tool and then decreases according to the distance from the profiling device.
    There are several types of magnetic field configurations that can be created. An example is a gradient field design, the example of which is shown in Figure 7, since the design has a decay field outside the tool. Another example of a configuration is a type of saddle point. In some embodiments, a saddle point field configuration can be defined by having a maximum field strength at a point outside the tool that contains magnets 306A, 306B, which then decays over shorter or longer distances from from the center of the tool. Regardless of the particular configuration, the rate of decay at each point is often referred to as the gradient of the magnetic field.
    The magnetic field gradient is a concept used in many well NMR applications. For example, the gradient can be used to obtain molecular diffusion measurements (which can be used, for example, for fluid typing) and which is also related to the maximum excitable layer thickness and the effects of subsequent movement. In LWD NMR particularly, there may be significant lateral movement of the tool during the drilling process. This movement can move the NMR receptor slice (the spatial region that contributes to the reception of the NMR signal) out of the NMR excitation slice (the spatial region that the RF pulses excite the NMR centrifugation dynamics and signal generation of. NMR). When the reception and excitation slices move with each other, during the excitation and reception time, the NMR signal may decay due to this movement. For a particular magnitude of motion, the corresponding amount of decay is proportional to the overlap of the receiving slice and the excitation slice. Thus, the decay will be small, when the area of the slice is much larger than the amount of movement. The size of the receiving slice in relation to the excited slice is fundamentally important in motion considerations. Therefore, in some uses and in some embodiments, it may be desirable to have a large slice of excitement and reception compared to the expected movement of the tool.
    A low gradient can decrease sensitivity to movement. As an example, if a 1G excitation field is used at a given DOI, and the gradient is 1G / cm, then a 1 cm thick layer is excited. If the gradient is 10G / cm, then a thick layer of 0.1 cm thick is excited.
    Diffusion editing is a technique used to differentiate fluids with the same T1 or T2 values. Different lengths of hydrocarbon chains often spread at different rates. This measurement can be achieved by means of a magnetic field gradient to increase the attenuation of the signal through diffusion effects. By applying a sequence of pulses T90-T180 before a CPMG, the time, in which the centrifuges have to diffuse, can be varied. In addition to this initial echo time (Te), the diffusion can be strongly influenced by the intensity of the gradient. The greater the gradient, the greater the diffusion effect, in general, in some embodiments. By changing the initial echo encoding times, a D-T2 or D-T1 map (T1 or T2 are from the CPMG data after the diffusion encoding step, and D represents diffusion) can be created. The signal loss of the diffusion scales is te3 and G2 (where G is the gradient). Thus, the greater the gradient, the shorter the coding time needs to be. This results in a more robust measurement for the purpose of movement.
    To obtain an LWD porosity measurement, it may be beneficial to have a low gradient in order to increase the sensitive region. However, when trying to carry out a diffusion editing measurement, a larger gradient can be beneficial, as it will generally allow for a reduction in measurement times. Thus, an example of a system, which can be changed to change from a low to a high gradient depending on the measurement objective, can be very beneficial for a well NMR profiling tool.
    The formation of the magnetic field can also be done by changing the spacing of the magnets. If the spacing between magnets 306A, 306B is changed, the magnetic field and the magnetic field gradients change at a depth of investigation (DOI).
    Figure 8 illustrates a magnetically permeable element 312, disposed between two magnets 306A, 306B, according to an example of an embodiment. The embodiment of Figure 8 is an example of a method for increasing the intensity of the magnetic field with the depth of investigation - that is, for inserting a magnetically permeable element 312 with high permeability (such as 50) between the two permanent magnets 306A , 306B. In an example of an embodiment, this permeable element 312 guides the magnetic flux of the magnets 306A, 306B into the part of the element and then pushes the magnetic field radially outward around the center of the element, thereby increasing the magnetic field. At the same time, the magnetically permeable element 312 increases the gradient of the magnetic field. In the example of embodiments, as in Figure 8, the permeable element 312 can be a solid permeable mandrel disposed axially between the two magnets 306A, 306B.
    Figure 9A illustrates a magnetically permeable element 312 divided into rings 912A-C arranged between two magnets 306A, 306B, according to an example embodiment. As shown in Figure 9A, the magnetically permeable element 312 is divided into three rings 912A-C, with the central ring 912A being longer than the two outer rings 912B, 912C on the same side. In various embodiments, a variety of other arrangements are possible (for example, divided into any number of rings 912, rings 912 having a variety of sizes or uniform sizes, etc.). This permeable element 312 can be further divided into two narrower rings 912 in order to modify the profile of the magnetic field. These 912A-C rings can also be moved axially, and this can further vary the configuration of the magnetic field (for example, the strength of the magnetic field and field gradients). When changing the distribution of the magnetic material, the magnetic field and the gradient of the magnetic field are changed, since the magnetic field and the gradient depend, at least partially, on the distribution of the magnetic material.
    Figure 9B is a graph, which illustrates the magnetic field profile along the radial direction of the magnetic assembly of Figure 9A, according to an example of an embodiment. Figure 9C is a graph, illustrating the equipotential magnetic lines 918 of the magnetic assembly of Figure 9A, according to an example of an embodiment.
    Figures 10A-D illustrate other examples of the effect of changing the size of the permeable element 312 on the magnetic field. Figure 10A is a graph, illustrating the equipotential magnetic lines 1118 of a magnetic assembly illustrated with a permeable element 312, according to an example of an embodiment. Figure 10B is a graph, illustrating equipotential magnetic lines 1118 from another magnetic assembly illustrated with a permeable element 312 smaller than that of Figure 10A. Figures 10A and 11B are based on a 40 cm magnet spacing, with Figure 10A being based on a 20 cm SW, and Figure 10B being based on a 20 cm SW. Figure 10C is a graph, which illustrates the magnetic field profile of the magnetic array shown in Figure 10A. Figure 10D is a graph, which illustrates the magnetic field profile of the magnetic array shown in Figure 10B.
    When examining Figures 10A-D, it can be seen that, if the permeable parts are reduced in size with a fixed spacing of magnets, the gradient and field profile are changed. There is a point where the design is converted from a gradient tool to a saddle stitch design. In the example of embodiments, to vary the permeable parts, which are located between the two magnets 306A, 306B, magnetic and non-magnetic parts can be welded together to create a fit for the drain line 310. This part can be interchangeable with other similar parts, which are configured to produce a desired magnetic field and magnetic field gradient.
    权利要求:
    Claims (6)
    [0001]
    1. NUCLEAR MAGNETIC RESONANCE APPLIANCE, comprising: a drilling command (304) having a flow line (310) disposed therein, for the flow of liquids inside the flow line; a first magnet (306A) embedded in the drilling command (304); a second magnet (306B) axially separated from the first magnet (306A); an antenna (308) disposed between the first (306A) and second (306B) magnets; a magnetically permeable element (312) positioned between the first (306A) and second (306B) magnets, wherein the element (312) comprises a plurality of rings (912); characterized by the fact that said magnetically permeable element (312) is disposed within the flow line (310).
    [0002]
    2. APPLIANCE, according to claim 1, characterized in that the flow line (310) includes a section (419) made of a magnetic material.
    [0003]
    3. APPLIANCE, according to claim 2, characterized in that the flow line (310) still includes a section (417) made of a non-magnetic material.
    [0004]
    4. APPLIANCE according to claim 1, characterized in that the permeable element (312) comprises three rings and the central ring (312B) is longer than the two outer rings (912A, 912C) there.
    [0005]
    5. APPLIANCE, according to claim 1, characterized by the fact that the rings (912) of the permeable element are axially movable inside the flow line (310) to vary the configuration of the magnetic field.
    [0006]
    6. METHOD, comprising: implantation of a nuclear magnetic resonance profiling tool inside a well (11) close to a formation; and measuring a nuclear magnetic resonance characteristic of the formation, wherein the nuclear magnetic resonance profiling tool comprises: a drilling command (304) having a flow line (310) disposed therein, for the flow of liquids inside the flow line; a first magnet (306A) embedded in the drilling command (304); a second magnet (306B) axially spaced from the first magnet (306A); an antenna (308) disposed between the first (306A) and second (306B) magnets; a magnetically permeable element positioned between the first (306A) and second (306B) magnets, wherein the element (312) comprises a plurality of rings (912); characterized by the fact that said magnetically permeable element (312) is disposed within the flow line (310).
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JP2980680B2|1990-12-05|1999-11-22|ニューマーコーポレーション|Well exploration system during well drilling|
    US5629623A|1992-07-30|1997-05-13|Schlumberger Technology Corporation|Pulsed nuclear magnetism tool for formation evaluation while drilling|
    US5705927A|1992-07-30|1998-01-06|Schlumberger Technology Corporation|Pulsed nuclear magnetism tool for formation evaluation while drilling including a shortened or truncated CPMG sequence|
    EP1057047B1|1998-01-16|2008-08-06|Halliburton Energy Services, Inc.|Method and apparatus for nuclear magnetic resonance measuring while drilling|
    US6246236B1|1998-03-03|2001-06-12|Schlumberger Technology Corporation|Apparatus and method for obtaining a nuclear magnetic resonance measurement while drilling|
    US7501817B1|1998-03-03|2009-03-10|Schlumberger Technology Corporation|Method and apparatus for generating an axisymmetric magnetic field|
    US6400149B1|2001-05-24|2002-06-04|Schlumberger Technology Corporation|Nuclear magnetic resonance apparatus and method for generating an axisymmetric magnetic field having straight contour lines in the resonance region|
    US6727696B2|1998-03-06|2004-04-27|Baker Hughes Incorporated|Downhole NMR processing|
    US6232778B1|1998-06-11|2001-05-15|Schlumberger Technology Corporation|Method for obtaining NMR bound fluid volume using partial polarization|
    US6566874B1|1998-07-30|2003-05-20|Schlumberger Technology Corporation|Detecting tool motion effects on nuclear magnetic resonance measurements|
    US6429653B1|1999-02-09|2002-08-06|Baker Hughes Incorporated|Method and apparatus for protecting a sensor in a drill collar|
    US6114851A|1999-02-12|2000-09-05|Baker Hughes Incorporated|Temperature compensated nuclear magnetic resonance apparatus and method|
    RU2273868C2|2001-07-26|2006-04-10|Шлюмбергер Текнолоджи Б.В.|Device for placement of descending instrument, method of transmission and/or reception of signal from ground formation and method of measurement of characteristics of ground formation using by descending instrument|
    US6838876B2|2002-02-18|2005-01-04|Baker Hughes Incorporated|Slotted NMR antenna cover|
    RU2230345C1|2003-01-17|2004-06-10|Стариков Владислав Петрович|Method of nuclear magnetic resonance logging and device for its realization|
    US7436184B2|2005-03-15|2008-10-14|Pathfinder Energy Services, Inc.|Well logging apparatus for obtaining azimuthally sensitive formation resistivity measurements|
    US8570042B2|2007-08-31|2013-10-29|The Regents Of The University Of California|Adjustable permanent magnet assembly for NMR and MRI|
    US8587303B2|2009-05-08|2013-11-19|Baker Hughes Incorporated|Method and apparatus for NMR measurements in underbalanced drilling|
    US8860413B2|2010-11-19|2014-10-14|Schlumberger Technology Corporation|Nuclear magnetic resonance tool with movable magnets|US8970217B1|2010-04-14|2015-03-03|Hypres, Inc.|System and method for noise reduction in magnetic resonance imaging|
    US8860413B2|2010-11-19|2014-10-14|Schlumberger Technology Corporation|Nuclear magnetic resonance tool with movable magnets|
    US9482631B2|2013-05-14|2016-11-01|Chevron U.S.A. Inc.|Formation core sample holder assembly and testing method for nuclear magnetic resonance measurements|
    CN103344995B|2013-06-24|2016-03-02|吉林大学|Introduce the detection method of the nuclear magnetic resonance directional detection device of artificial magnetic field|
    US9835754B2|2013-12-13|2017-12-05|Halliburton Energy Services, Inc.|Switching an operating mode of an NMR logging tool|
    US9523263B2|2014-06-13|2016-12-20|Halliburton Energy Services, Inc.|Drilling turbine power generation|
    CA2948679C|2014-06-17|2018-10-30|Halliburton Energy Services, Inc.|Reluctance sensor for measuring a magnetizable structure in a subterranean environment|
    US10253620B1|2014-09-23|2019-04-09|Kelly K. Rose|System for kick detection during a drilling operation|
    US9851315B2|2014-12-11|2017-12-26|Chevron U.S.A. Inc.|Methods for quantitative characterization of asphaltenes in solutions using two-dimensional low-field NMR measurement|
    BR112017028203A2|2015-07-31|2018-08-28|Halliburton Energy Services Inc|apparatus, method and system for assessing an underground formation.|
    CN105298486B|2015-11-25|2019-04-12|中国石油集团钻井工程技术研究院|The controllable NMR while drilling device in underground|
    BR112018010917A2|2015-12-29|2019-04-30|Halliburton Energy Services Inc|nuclear magnetic resonance apparatus, system and method|
    US10634746B2|2016-03-29|2020-04-28|Chevron U.S.A. Inc.|NMR measured pore fluid phase behavior measurements|
    CN106437686A|2016-09-19|2017-02-22|中国石油集团渤海钻探工程有限公司|Device for quickly transmitting LWDdata through electromagnetic wave signal|
    BR112019020576A2|2017-06-28|2020-04-28|Halliburton Energy Services Inc|method for building nuclear magnetic resonance downhole tools, system operable in a well environment, and, nuclear magnetic resonance sensor|
    WO2019132989A1|2017-12-29|2019-07-04|Halliburton Energy Services, Inc.|Magnet assemblies for downhole nuclear magnetic resonancetools|
    CN110058320A|2019-04-28|2019-07-26|吉林大学|A kind of adjustable active field nuclear magnetic resonance log probe of detecting area and its detection method|
    法律状态:
    2018-12-18| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-12-10| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-11-17| B09A| Decision: intention to grant|
    2021-02-02| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 16/11/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US41540710P| true| 2010-11-19|2010-11-19|
    US61/415.407|2010-11-19|
    US41817210P| true| 2010-11-30|2010-11-30|
    US61/418.172|2010-11-30|
    US201161488265P| true| 2011-05-20|2011-05-20|
    US61/488.265|2011-05-20|
    PCT/US2011/060940|WO2012068219A2|2010-11-19|2011-11-16|Nuclear magnetic resonance tool with external magnets|
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