• 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:
    The invention relates to an oil producing industry. The goal is to increase the reliability of the packer during its repeated installation and removal from the site, regardless of the transmitted weight of the production pipe string. For this, between the outer gear surface of the lower part of the housing and the split locking element there is installed a sliding sleeve with an inner annular protrusion moved by the packer barrel in two directions. The inner annular protrusion of the sliding sleeve is placed with the possibility of an abutment against the end of the lower part of the body and the lower annular protrusion of the trunk in the initial position. The barrel of the packer is made with an additional annular protrusion for interacting with the inner annular protrusion of the sliding sleeve when the barrel is moved to the lower position. The sliding sleeve engages under the tapered surface of the split locking element and disengages it from the toothed surface of the bottom of the housing, as a result of which it is prepared to move upwards. As the barrel is further pulled out and the slide sleeve moves upwards, its annular protrusion abuts against the end of the lower part of the body, after which it begins to move upwards. 1 hp f-ly, 4 ill.
    公开号:SU1667637A3
    申请号:SU874202569
    申请日:1987-05-05
    公开日:1991-07-30
    发明作者:Ласло Рудольф；Сабо Геза；Бенчик Иштван；Татар Аттила
    申请人:Мадьяр Сенхидрогенипари Кутато-Фейлесте Интезет (Инопредприятие)；Кеолайкутато Валлалат (Инопредприятие)；
    IPC主号:
    专利说明:

    The invention relates to the oil industry, namely, packs of mechanical type of multi-rolling action for separating a cased well bore during operation.
    The purpose of the invention is to improve the reliability of the packer during its installation and removal from the site, regardless of the transmitted weight of the production pipe string.
    FIG. 1 shows the packer in the initial position, general view, section: in Fig. 2, node I in Fig. 1; on fig.Z - packer in the working position after installation in the well, incision; Fig. 4 shows a packer in the free state after removal from the site, a slit.
    The mechanical packer (see Fig. 1) comprises a hollow composite shaft 1 connected to the production tubing (not shown) in the form of a tube beam with upper and lower quick-disconnect joints 2 and 3, an outer sealing gasket 4 and annular projections 5, 6 and 7 on its outer surface. On the barrel 1, the housing 8 is concentrically mounted with the thrust sleeve 9. The ribbed outer projection 10 and
    ABOUT
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    the lower part 11 with a serrated outer surface on which the sliding sleeve 12c is installed with an inner annular protrusion 13 placed between the end 14 of the lower part 11 of the housing 8 and the projection 7 of the barrel 1 with the ability to interact with the projection b when the barrel 1 moves downward relative to the housing 8 when installing packer. Under the stop sleeve 9 on the housing 8 there is a sealing element 15 of several sections, supported by the bottom spacer 16 supported on the ribbed protrusion 10 of the housing 8, as well as the knots for fixing and fixing the packer in the working position, centralizer and fixing the packer in the initial position during the descent and ascent of it from the well.
    The packer knot knot includes a guide sleeve 17 with a bore with double-acting spikes 18, upper and lower wedge deflecting sleeves 19 and 20 connected to the guide sleeve 17 using restricting pins 21 and 22. The upper wedge deflector A bushing 19 is threadedly connected to a spacer sleeve 16, and a spring spacer ring 24 is installed in an annular groove 23 on the upper wedge deflecting sleeve 19, on the conical surface 25 of which the bushing 17 is boring (see .2). The lower wedge deflecting sleeve 20 is threadedly connected to the sleeve 26 of the packer centralizer assembly, in which spring-loaded friction centering pads 27 are mounted, supported on the ring 28. There is a split stop between the lower wedge deflector sleeve 20 and the centralizer assembly sleeve 26 on the sliding sleeve 12 element 29, made in the form of a composite nut with internal stop thread, conical and vertical bearing surfaces for engagement with the toothed outer surface of the lower part 11 of the housing 8 and the outer surface ited sliding sleeve 12 upon actuation of the packer in place and release of the seats with him. A split nut 31 with axial slots for fixing the packer in the initial position, provided with an internal stop thread for the thread of the lower quick coupling 3 of the barrel 1 of the packer, is installed between the ring 28 and the cap nut 30 connected to it.
    Upper quick coupling 2 barrel 1 is made in the form of a split ring with a resistant thread and longitudinal
    splines, which when bringing the packer into action engages with the thread 32 of the thrust sleeve 9 connected to the thread with the housing 8. Sealing
    The gasket 4 consists of many elements and provides sealing of the annular gap 33 between the barrel 1 and the housing 8 or the circulation of fluid through it with a certain rise of the barrel 1 after the packer is installed in the wellbore. The slips 18 of the packer knot are mounted in the sockets 34 of the guide sleeve 17, the lower ends of which are inserted into the T-shaped conical sockets in
    5 lower wedge deflecting sleeve 20, and restrictive pins 21 and 22 mounted on the upper and lower wedge deflecting sleeves 19 and 20 are installed in longitudinal slots x 35 and 36
    0 guide bush 17.
    The principle of operation of the packer during its installation in the well is explained first of FIG. 1, and the end of this process after bringing the packer into action is shown in FIG.
    5Packer is lowered into the well on a string of production pipes to the required depth. During the descent of the packer, the centering pads 27 slide along the inner wall of the casing 37 (FIGS. 3 and 4),
    As a result, the split nut 31 remains in the locked position until the installation depth of the packer. The downward displacement of the lower wedge deflector sleeve 20 is also prevented by the pads 27. After
    5 of this column of production pipes, and with it, the barrel 1 of the packer is rotated to the right. As a consequence, the lower quick coupling 3 of the barrel 1 is screwed down from the split nut 31. After that
    0, the production tubing string and the barrel 1 of the packer are lowered.
    In this case, the protrusion 6 of the barrel 1 rests on the annular protrusion 13 of the sliding sleeve 12 and moves it downwards, as a result of which
    5, the locking element 29 engages with the serrated outer surface of the lower part 11 of the housing 8, and the upper protrusion 5 of the barrel 1 becomes on the upper end of the thrust sleeve 9. as shown in FIG. Top
    The Q quick coupling 2 of the barrel 1 engages with the thread 32 of the thrust sleeve 9, and the sealing gasket 4 enters the annular gap 33 between the barrel 1 and the body 8 of the packer. Upon subsequent sinking of the production pipe string, a certain part of their weight is perceived by sleeve 9.
    Under the action of an axial load, the thrust sleeve 9. The spacer sleeve 16, the upper wedge deflecting sleeve 19 and supported by the spring ring 24, the guide sleeve 17 are displaced downwards, and under the action of the wedge deflecting sleeves 19 and 20 the slips 18, the slips in the conical sockets of the lower wedge deflection sleeve 20 extends to contact with the inner surface of the casing 37. In this case, the spring ring 24 is compressed with a certain force in the radial direction, resulting in a conical surface of the upper wedge deflecting tulkus 19 comes under the top end of the slips 18. Thus is created a double conical bearing slips 18, whereby the sealing member 15 receives a stable support from below. With a further increase in load, the sections of the sealing element 15 are compressed and expanded in the radial direction and pressed in the inner surface of the casing 37. Thus, a tight seal is created between the casing 8 of the packer and the casing 37. Bifold clips 18, under the influence of increasing compressive force, make them rigidly locked. At the same time, the outer gear surface of the lower part 11 of the housing 8 slides under the locking element 29 downwards and in the absence of the required sedimentary force, the compressed position of the packer sealing element 15 is provided with the toothed outer surface of the lower part 11 of the housing 8 and the locking element 29. This position is shown in FIG. H.
    The design of the packer and the principle of operation ensure its reliable fixation and tightness under the action of mechanical and hydraulic loads directed both downwards and upwards, as well as carrying out various technological operations in the well.
    During the fit of the packer, the upper quick-release threaded joint 2 engages with the thread 32 of the thrust sleeve 9 and the barrel 1 is fixed relative to the housing 8. If the production tubing string and the barrel 1 are turned to the right in a slightly extended position, then the quick-release joint 2 unscrewed from the thread 32 of the stop sleeve 9. After that, when the production tubing is raised to a certain height, the gasket 4 of the barrel 1 leaves the axial channel of the housing 8, as a result of which between the separated seals Ny element 15 nadpakernoy and podpakternoy
    hydraulic cavities are created through hydraulic communication through the annular gap 33 of the packer, but the housing 8 and its associated elements remain in a fixed and sealed position relative to the casing 37.
    After carrying out the corresponding technological operation (for example, cleaning by washing with liquid), the pipe of the production pipes is lowered and the quick-release threaded connection 2 of the barrel 1 is again engaged with the thread 32 by the stop sleeve 9 and the gasket 4 again provides a hermetic and
    5 complete closure of the left channel of the housing 8 packer.
    The operation of removing the packer from its place and lifting it from the well is explained in Figs. 3 and 4. After ensuring the equilibrium state of the wells above and below the packer, the production tubing and the trunk 1 associated with it are rotated to the right. As a result, the quick coupling of the screw connection 2 is unscrewed from
    5 threads 32 thrust sleeves 9. After that, the barrel 1 of the packer is raised. In this case, the annular protrusion 7 of the barrel 1 rests on the lower end of the sliding sleeve 12 and moves it upwards. Slip shcha sleeve 12 comes under
    0 the cone surface of the split locking element 29 and disengages it from the toothed surface of the lower part 11 of the housing 8, as a result of which it is prepared to move upwards. The innermost protrusion of the barrel 1 and the sliding sleeve 12 upwards moves its annular protrusion 13 against the end face 14 of the lower part 11 of the housing 8, after which it begins to move upwards, as a result the compressive load on the sealing element 15 is removed and its sections are opened and returned At the same time, the ribbed protrusion 10 of the packer body 8 rests on the spacer sleeve 16.
    5When maintaining the expansion force of the upper wedge deflecting sleeve 19 under the influence of the ribbed protrusion 10 on the associated spacer sleeve 16, it leaves the slot 18, thereby eliminating their upper support. Thereafter, the guide bushing 17 is pulled up with the help of the pin 21 and removes the slips 18 from engagement with the walls of the casing 37,
    These are then retracted into the sockets of the bottom riving sleeve 20 to their original position. At the end of the packer removal process, the guide sleeve 17 rests with its slots 36 onto the lower wedge deflector sleeve 20 attached to the lower wedge.
    restrictive pins 22, and the lower quick-disconnect threaded connection 3 of the barrel 1 is engaged with the split nut 31. In this case, the gasket 4 of the barrel 1 is in the initial position above the stop sleeve 9, and the housing 8 is in a fixed position relative to the barrel 1.
    Thus, each packer element returns to its original position when it is removed from its place, as a result of which the string of production pipes with the packer can be raised or lowered to install the packer in another place, repeating the operation to bring it into operation.
    权利要求:
    Claims (2)
    [1]
    Claim 1. Mechanical packer containing a hollow composite barrel in the form of a tube beam with upper and lower quick-disconnect couplings mounted on it, an external sealing gasket and upper and lower annular projections on its ends, mounted concentrically on the barrel its outer surface, outer protrusion and lower part with a serrated outer surface, placed movably on the body under the thrust sleeve sectional sealing element, spacer sleeve, knot for measles vanes comprising a guide bushing with double-acting sleeves that interact with the upper and lower wedge deflecting sleeves connected to the guide bushing by means of restricting pins positioned between the lower wedge deflection sleeve and the centralizer sleeve a split locking element made in the form of a composite nut with internal stop thread od toothed outer
    the surface of the lower part of the body, and the centering assembly of the packer in the transport position, characterized in that, in order to increase the reliability of the packer’s operation during its installation and removal
    irrespective of the transmitted weight of the production pipe string, it is equipped with a movable barrel in two directions with a sliding sleeve with an internal annular protrusion installed between
    the outer toothed surface of the lower part of the housing and the split locking element, the inner annular protrusion of the sliding sleeve being placed with the possibility of an abutment against the end of the lower part
    body and in the lower annular protrusion of the barrel in the initial position, and the barrel of the packer is made with an additional thrust annular protrusion to interact with the inner annular protrusion of the sliding
    sleeve when moving the trunk in the lower position.
    [2]
    2. Packer according to claim 1. It is equipped with a spring spacer ring placed between the guide sleeve and the upper wedge deflection sleeve.
    ten
    figure 1
    nat.2
    fig.Z
    Compiled by I.Levkoeva Editor M.Nedoluzhenko Techred M. Morgental
    -37
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    i,
    Proofreader T.
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    法律状态:
    优先权:
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