CN102425392B - Hydraulic sealing permanent packer - Google Patents
Hydraulic sealing permanent packer Download PDFInfo
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- CN102425392B CN102425392B CN201110444479.4A CN201110444479A CN102425392B CN 102425392 B CN102425392 B CN 102425392B CN 201110444479 A CN201110444479 A CN 201110444479A CN 102425392 B CN102425392 B CN 102425392B
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Abstract
The invention relates to the technical field of a packer used for petroleum drilling and provides a hydraulic sealing permanent packer. The hydraulic sealing permanent packer comprises a central pipe, a lower connector, a spindle pipe, a rubber plug sealing device, an upper base hanging device, a lower base hanging device and a hydraulic driving device, wherein the spindle pipe is fixedly mounted on the exterior at the lower end of the central pipe through screw threads; the lower connector is fixedly mounted on the exterior at the lower end of the spindle pipe through screw threads; an upper connecting thread is arranged on an inner wall of the upper part of the central pipe; a lower connecting thread is arranged on the inner wall of the lower part of the lower connector; and the rubber plug sealing device, which can swell along a radial direction after being pressed so as to seal a well, is mounted outside the upper part of the central pipe. The hydraulic sealing permanent packer is reasonable and compact in structure and is convenient in usage. Under the condition of keeping the pressure, the lower base hanging device, the rubber plug sealing device and the upper base hanging device are driven to move upward by the hydraulic driving device, the upper base hanging device and the lower base hanging device are located and hung on a well wall, and meanwhile, the sealing is realized by the rubber plug sealing device. The hydraulic sealing permanent packer has the characteristics of simple operation, low manufacturing and using costs, reliable sealing, safety and high efficiency.
Description
Technical field
the present invention relates to oil drilling and use packer technology field, is a kind of hydraulic sealing permanent packer.
Background technology
in the work progresss such as completion, well workover, stimulation work, often need to use packer to sit and hang on the borehole wall and packing stratum at present, to realize the objects such as layer and section exploitation, control water blocking water, reservoir reconstruction.And often there is the problem of the following aspects in conventional packer: complex structure, the various processing cost that causes of parts are high, execute-in-place complex process, instrument global reliability is low; When seat hangs on the borehole wall, sit extension power deficiency, slips can not effectively be sat and hang on internal surface of sleeve pipe, and packing element expands not in place, poor sealing performance; Poor to irregular borehole wall adaptive.
Summary of the invention
the invention provides a kind of hydraulic sealing permanent packer, overcome the deficiency of above-mentioned prior art, its can effectively solve complex structure, cost that existing oil drilling packer exists higher, sit extension power deficiency, sealing is poor, reliability is lower problem.
technical scheme of the present invention realizes by following measures: a kind of hydraulic sealing permanent packer, comprises central tube, lower contact, core tube, plug packing device, seat of honour hang device, a lower hang device and hydraulic drive, the outside, lower end of central tube is installed with core tube by screw thread, the outside, lower end of core tube is installed with lower contact by screw thread, in the upper inside wall of central tube, there is upper connecting thread, in the lower inner wall of lower contact, there is lower connecting thread, the upper outside of central tube be provided with can be after pressurized expanded radially make the plug packing device of well packing, the above and below of plug packing device is separately installed with seat of honour hang device and a lower hang device that can be fixed on internal surface of sleeve pipe, the lower outside of central tube, outside and the lower contact upper outside of core tube is provided with can push plug packing device and make seat of honour hang device and hydraulic drive that a lower hang device is opened.
the further optimization and/or improvements to foregoing invention technical scheme below:
above-mentioned hydraulic drive can comprise fluid cylinder cover, middle fluid cylinder cover, fluid cylinder female connector and lower fluid cylinder cover, core tube comprises core tube and lower core tube, central tube lower outside has core barrel external screw thread, the upper outside of upper core tube has upper core pipe outer shroud platform, in correspondence, on the upper core tube inwall of core pipe outer shroud platform position, there is upper core pipe inner groove, on the sidewall of upper core pipe inner groove, there is upper core pipe internal thread, central tube bottom is fixedly mounted in upper core pipe inner groove by core barrel external screw thread and upper core pipe internal thread, upper core tube lower outside has upper core pipe external screw thread, the upper outside of lower core tube has lower core pipe outer shroud platform, on the lower core tube inwall of corresponding lower core pipe outer shroud platform position, there is lower core pipe inner groove, on the sidewall of lower core pipe inner groove, there is lower core pipe internal thread, upper core tube bottom is fixedly mounted in lower core pipe inner groove by upper core pipe external screw thread and lower core pipe internal thread, lower core tube lower outside has lower core pipe external screw thread, under having, the upper inside wall of lower contact connects inner groove, under connect under having on the sidewall of inner groove and connect internal thread, lower core tube bottom by lower core pipe external screw thread and under connect internal thread and be fixedly mounted on down and connect in inner groove, under lower contact middle part outside has, connect outer shroud platform and lower contact upper and lower formed down respectively connect axle journal and under connect lower axle journal, under connect axle journal outer cover lower fluid cylinder cover be housed, the lower surface of lower fluid cylinder cover is sitting in down on the upper surface that connects outer shroud platform, lower fluid cylinder cover bottom is fixed on down and is connected on axle journal by lower cylinder sleeve shear pin, in the upper inside wall of lower fluid cylinder cover, there is lower cylinder internal thread and be installed with fluid cylinder female connector, fluid cylinder female connector is sleeved on lower core tube outside and can moves up and down, fluid cylinder female connector lower end, the upper end of lower contact, between lower core tube outside and lower liquid inboard wall of cylinder liner, form lower hydraulic pressure chamber, the lower pressure transmission hole that has outer end to be connected with lower hydraulic pressure chamber on the lower core tube inwall of corresponding lower contact upper end position, there is liquid female connector outer shroud platform in the middle part outside of fluid cylinder female connector makes fluid cylinder female connector upper and lower form respectively in liquid female connector axle journal under axle journal and liquid female connector, under liquid female connector, on the lateral surface of axle journal, there is liquid female connector external screw thread, fluid cylinder female connector is fixedly mounted on the upper inside wall of lower fluid cylinder cover by liquid female connector external screw thread and lower cylinder internal thread, the lower surface of liquid female connector outer shroud platform is sitting on the upper surface of lower fluid cylinder cover, in the upper inside wall of middle fluid cylinder cover, there is ring platform in middle cylinder, middle fluid cylinder cover is sleeved on upper core tube outside and can moves up and down by encircling platform in middle cylinder, Huan Tai lower end in middle cylinder, lower core tube upper end, hydraulic cavities in forming between upper core tube outside and middle liquid inboard wall of cylinder liner, the middle pressure transmission hole that has outer end to be connected with middle hydraulic cavities on the upper core tube inwall of corresponding lower core tube upper end position, lower core pipe outer shroud platform lower end, fluid cylinder female connector upper end, between lower core tube outside and middle liquid inboard wall of cylinder liner, form lower back pressure cavity, on the middle fluid cylinder cover lateral surface of corresponding fluid cylinder female connector upper end position, there is the inner lower delivery hole being connected with lower back pressure cavity, middle cylinder axle journal is arranged at the top of middle fluid cylinder cover, cylinder circular bead surface during the middle fluid cylinder cover outside of middle cylinder axle journal bottom forms, middle cylinder axle journal outer cover is equipped with fluid cylinder cover, the lower surface of upper fluid cylinder cover is sitting on middle cylinder circular bead surface, the lower end of lower seat hang device holds out against on the upper surface of upper fluid cylinder cover, in the upper inside wall of upper fluid cylinder cover, there is ring platform in upper cylinder half, upper fluid cylinder cover is sleeved on central tube outside and can moves up and down by encircling platform in upper cylinder half, Huan Tai lower end in upper cylinder half, upper core tube upper end, between central tube outside and upper liquid inboard wall of cylinder liner, form upper hydraulic cavities, the upper pressure transmission hole that has outer end to be connected with upper hydraulic cavities on the central tube inwall of core tube's upper end position in correspondence, upper core pipe outer shroud platform lower end, middle fluid cylinder set upper side, between upper liquid inboard wall of cylinder liner and upper core tube lateral surface, form upper back pressure cavity, in correspondence, on the upper fluid cylinder cover lateral surface of position, fluid cylinder set upper side, there is the inner upper delivery hole being connected with upper back pressure cavity.
the fluid cylinder cover retaining ring that can prevent that lower fluid cylinder cover from moving down can be installed between above-mentioned lower contact top and lower fluid cylinder cover, under connect axle journal top and connect concave ring groove under having, under connect on the sidewall of concave ring groove, be distributed with crown outward skew back below under connect external lock tooth, on the lower liquid inboard wall of cylinder liner of corresponding lower contact upper surface lower position, be distributed with the lower cylinder sleeve internal lock tooth of crown towards interior skew back below, on the inwall of fluid cylinder cover retaining ring, be distributed with crown towards inner side oblique upper and with under connect the cylinder sleeve ring gear internal lock tooth that external lock tooth matches, on the lateral surface of fluid cylinder cover retaining ring, be distributed with crown oblique upper and the cylinder sleeve ring gear external lock tooth that matches with lower cylinder sleeve internal lock tooth toward the outer side, fluid cylinder cover retaining ring lower end is sitting in down on the lower surface that connects concave ring groove, cylinder sleeve ring gear internal lock tooth with under connect external lock tooth and be meshed, cylinder sleeve ring gear external lock tooth is meshed with lower cylinder sleeve internal lock tooth.
an above-mentioned lower hang device can comprise that spacing interstage sleeve, lower starting taper cover, lower hang tag watt and can prevent the tapered sleeve retaining ring that lower starting taper cover moves down, spacing interstage sleeve, lower starting taper cover and lower hang tag and watt are from up to down sleeved on successively outside the central tube between plug packing device and hydraulic drive, interstage sleeve axle journal is arranged at the bottom of spacing interstage sleeve, the upper inside wall of lower starting taper cover has interstage sleeve mounting groove, interstage sleeve axle journal is arranged on interstage sleeve mounting groove inside, interstage sleeve axle journal and lower starting taper cover are fixed together by lower tapered sleeve shear pin, on the central tube lateral surface of corresponding lower tapered sleeve shear pin position, there is lower extension shear pin groove, the inner of lower tapered sleeve shear pin holds out against on the bottom surface of lower extension shear pin groove, the outer lower portion of lower starting taper cover has up big and down small lower tapered sleeve starting taper face, on the lateral surface that lower seat hangs tag watt, be distributed with crown lower watt of latch of below toward the outer side, the upper inside wall that lower seat hangs tag watt has the lower watt of conical surface matching with lower tapered sleeve starting taper face, the top that lower seat hangs tag watt is distributed with the lower watt-minute lobe groove of opening upwards along even circumferential, the upper surface of hydraulic drive holds out against on lower the lower surface hanging tag watt, and the lower watt of conical surface that lower seat hangs tag watt holds out against on the lower tapered sleeve starting taper face of lower starting taper cover, and the upper end of spacing interstage sleeve holds out against on the lower surface of plug packing device, between central tube and lower starting taper cover, tapered sleeve retaining ring is installed, on the lower starting taper cover inwall of interstage sleeve mounting groove bottom, there is lower retaining ring mounting groove, on the sidewall of lower retaining ring mounting groove, be distributed with the tapered sleeve internal lock tooth of crown towards interior skew back below, on the central tube lateral surface of corresponding spacing interstage sleeve and lower retaining ring mounting groove lower position, be distributed with crown external lock tooth under the core barrel of oblique upper toward the outer side, on the inwall of tapered sleeve retaining ring, be distributed with crown towards interior skew back below and the tapered sleeve ring gear internal lock tooth matching with external lock tooth under core barrel, on the outer wall of tapered sleeve retaining ring, be distributed with crown oblique upper and the tapered sleeve ring gear external lock tooth that matches with tapered sleeve internal lock tooth toward the outer side, the lower end of tapered sleeve retaining ring is sitting on the lower surface of lower retaining ring mounting groove, the lower end of interstage sleeve axle journal is pressed on the upper surface of tapered sleeve retaining ring, tapered sleeve ring gear internal lock tooth is meshed with external lock tooth under core barrel, tapered sleeve ring gear external lock tooth is meshed with tapered sleeve internal lock tooth.
above-mentioned seat of honour hang device can comprise that tile mounting base sleeve pipe, the seat of honour hang tag watt and upper starting taper cover, tile mounting base sleeve pipe is fixedly mounted on central tube top, the seat of honour hangs tag watt and upper starting taper cover is from up to down set in central tube outside, the upper outside of upper starting taper cover has up-small and down-big upper tapered sleeve starting taper face, the outer middle side part of upper starting taper cover has upper tapered sleeve shear pin hole and tapered sleeve shear pin is installed, in correspondence, on the central tube lateral surface of tapered sleeve shear pin position, there is the seat of honour to hang shear pin groove, the inner of upper tapered sleeve shear pin holds out against at the seat of honour and hangs on the bottom surface of shear pin groove, the upper end of plug packing device holds out against on the lower surface of upper starting taper cover, on the lateral surface that the seat of honour hangs tag watt, be distributed with crown upper watt latch of top toward the outer side, the upper watt conical surface matching with upper tapered sleeve starting taper face is arranged at the inwall bottom that the seat of honour hangs tag watt, the bottom that the seat of honour hangs tag watt is distributed with along even circumferential the upper watt-minute lobe groove that Open Side Down, the upper tapered sleeve starting taper face of upper starting taper cover holds out against on the upper watt conical surface hanging tag watt at the seat of honour, and the upper surface that the seat of honour hangs tag watt holds out against on the lower surface of tile mounting base sleeve pipe.
above-mentioned plug packing device can comprise auxiliary plug, main plug and lower auxiliary plug; Upper auxiliary plug, main plug and lower auxiliary plug are from up to down sleeved on outside, central tube middle part successively, the inwall middle part of main plug is fixed with support ring, on the inwall of support ring, have pushing out ring seal groove and pushing out ring sealing ring is installed, the upper end of upper auxiliary plug and the lower end of lower auxiliary plug are fixed with respectively metal toroidal shell and lower metal toroidal shell.
above-mentioned tile mounting base sleeve pipe can and can prevent that by cover for seat release shear pin the deck cover retaining ring that tile mounting base sleeve pipe moves down is arranged on central tube top, the upper outside of central tube has cover for seat erection loop platform, tile mounting base casing pipe sleeve is contained in cover for seat erection loop platform outside and can moves up and down, there is deck cover shear pin hole on tile mounting base outside of sleeve top cover for seat release shear pin is installed, on the cover for seat erection loop platform lateral surface of corresponding cover for seat release shear pin position, there is cover for seat release shear pin groove, the inner of cover for seat release shear pin holds out against on the bottom surface of cover for seat release shear pin groove, there is cover for seat limited ring dais the cover for seat erection loop platform outside that is positioned at tile mounting base sleeve pipe top position, between cover for seat limited ring dais lower surface and tile mounting base sleeve pipe upper surface, there is release distance, the central tube outside of cover for seat erection loop platform below is distributed with crown external lock tooth on the core barrel of oblique upper toward the outer side, in the lower inner wall of tile mounting base sleeve pipe, be distributed with the deck cover internal lock tooth of crown towards interior skew back below, on the inwall of deck cover retaining ring, be distributed with crown towards interior skew back below and the deck ring gear internal lock tooth matching with external lock tooth on core barrel, on the lateral surface of deck cover retaining ring, be distributed with crown oblique upper and the deck ring gear external lock tooth that matches with deck cover internal lock tooth toward the outer side, the lower end of deck cover retaining ring is sitting on the upper surface that the seat of honour hangs tag watt, deck ring gear internal lock tooth is meshed with external lock tooth on core barrel, deck ring gear external lock tooth is meshed with deck cover internal lock tooth.
in above-mentioned upper cylinder half, on the inwall of ring platform, can there is upper cylinder half seal groove and upper cylinder half sealing ring is installed, in middle cylinder, on the inwall of ring platform, can there is middle cylinder seal groove and middle cylinder sealing ring is installed, on the fluid cylinder female connector inwall of corresponding liquid female connector outer shroud platform medium position, can have liquid female connector seal groove and liquid female connector sealing ring is installed; The outer upper of upper core pipe outer shroud platform can have upper core pipe external seal groove and core seal of tube circle is installed, and the outer upper of lower core pipe outer shroud platform can have lower core pipe external seal groove and lower core seal of tube circle is installed.
reasonable and compact in structure of the present invention, easy to use, it is by the pressure of spraining, drive on a lower hang device, plug packing device and a lower hang device and move by hydraulic drive, seat of honour hang device and lower hang device seat hang on the borehole wall, simultaneously plug packing device realize setting, have simple to operate, manufacture that use cost is low, sealing reliably, feature safely and efficiently.
Brief description of the drawings
the master that accompanying drawing 1 is most preferred embodiment of the present invention looks half section structural representation.
accompanying drawing 2 is the structure for amplifying schematic diagram of accompanying drawing 1 the first half.
accompanying drawing 3 is the structure for amplifying schematic diagram of accompanying drawing 1 the latter half.
coding in accompanying drawing is respectively: pipe centered by 1, 2 is lower contact, 3 is upper connecting thread, 4 is lower connecting thread, 5 is upper fluid cylinder cover, 6 is middle fluid cylinder cover, 7 is fluid cylinder female connector, 8 is lower fluid cylinder cover, 9 is upper core tube, 10 is lower core tube, 11 is core barrel external screw thread, 12 is upper core pipe outer shroud platform, 13 is upper core pipe inner groove, 14 is upper core pipe external screw thread, 15 is lower core pipe outer shroud platform, 16 is lower core pipe inner groove, 17 is lower core pipe external screw thread, 18 connect inner groove under being, 19 connect outer shroud platform under being, 20 connect axle journal under being, 21 is lower cylinder sleeve shear pin, 22 is lower cylinder internal thread, 23 is lower hydraulic pressure chamber, 24 is lower pressure transmission hole, 25 is liquid female connector outer shroud platform, 26 is axle journal in liquid female connector, 27 is axle journal under liquid female connector, 28 is ring platform in middle cylinder, 29 is middle hydraulic cavities, 30 is middle pressure transmission hole, 31 is lower back pressure cavity, 32 is lower delivery hole, 33 is middle cylinder axle journal, 34 is middle cylinder circular bead surface, 35 is ring platform in upper cylinder half, 36 is upper hydraulic cavities, 37 is upper pressure transmission hole, 38 is upper back pressure cavity, 39 is upper delivery hole, 40 is fluid cylinder cover retaining ring, 41 connect concave ring groove under being, 42 connect external lock tooth under being, 43 is lower cylinder sleeve internal lock tooth, 44 is spacing interstage sleeve, 45 is lower starting taper cover, 46 hang tag watt for lower, 47 is tapered sleeve retaining ring, 48 is interstage sleeve axle journal, 49 is interstage sleeve mounting groove, 50 is lower tapered sleeve shear pin, 51 is lower extension shear pin groove, 52 is lower tapered sleeve starting taper face, 53 is lower watt of latch, 54 is lower watt-minute lobe groove, 55 is lower retaining ring mounting groove, 56 is tapered sleeve internal lock tooth, 57 is external lock tooth under core barrel, 58 is tile mounting base sleeve pipe, 59 hang tag watt for the seat of honour, 60 is upper starting taper cover, 61 is upper tapered sleeve starting taper face, 62 is upper tapered sleeve shear pin, 63 is seat of honour extension shear pin groove, 64 is upper watt latch, 65 is upper watt-minute lobe groove, 66 is upper auxiliary plug, 67 is main plug, 68 is lower auxiliary plug, 69 is support ring, 70 is pushing out ring seal groove, 71 is upper metal toroidal shell, 72 is lower metal toroidal shell, 73 is cover for seat release shear pin, 74 is deck cover retaining ring, 75 is cover for seat erection loop platform, 76 is cover for seat release shear pin groove, 77 is cover for seat limited ring dais, 78 is release distance, 79 is external lock tooth on core barrel, 80 is deck cover internal lock tooth, 81 is upper cylinder half seal groove, 82 is middle cylinder seal groove, 83 is liquid female connector seal groove, 84 is upper core pipe external seal groove, 85 is lower core pipe external seal groove.
Detailed description of the invention
the present invention is not subject to the restriction of following embodiment, can determine concrete embodiment according to technical scheme of the present invention and actual conditions.
in the present invention, for convenience of description, the description of the relative position relation of each parts is to be all described according to the Butut mode of Figure of description 1, as: the position relationship of forward and backward, upper and lower, left and right etc. is to determine according to the Butut direction of Figure of description.
below in conjunction with embodiment and accompanying drawing, the invention will be further described:
as shown in Figure 1, this hydraulic sealing permanent packer comprises central tube 1, lower contact 2, core tube, plug packing device, seat of honour hang device, a lower hang device and hydraulic drive, the outside, lower end of central tube 1 is installed with core tube by screw thread, the outside, lower end of core tube is installed with lower contact 2 by screw thread, in the upper inside wall of central tube 1, there is upper connecting thread 3, in the lower inner wall of lower contact 2, there is lower connecting thread 4, the upper outside of central tube 1 be provided with can be after pressurized expanded radially make the plug packing device of well packing, the above and below of plug packing device is separately installed with seat of honour hang device and a lower hang device that can be fixed on internal surface of sleeve pipe, the lower outside of central tube 1, outside and lower contact 2 upper outside of core tube are provided with can push plug packing device and make seat of honour hang device and hydraulic drive that a lower hang device is opened.By the operation that builds the pressure, make to move in hydraulic drive, seat of honour hang device and a lower hang device are opened and be clamped on internal surface of sleeve pipe, meanwhile, hydraulic drive is also pushed plug packing device and is realized well packing, and not only operation is very easy, and setting reliable.
according to actual needs, above-mentioned hydraulic sealing permanent packer is made further optimization and/or improvements:
as shown in accompanying drawing 1,2,3, hydraulic drive comprises fluid cylinder cover 5, middle fluid cylinder cover 6, fluid cylinder female connector 7 and lower fluid cylinder cover 8, core tube comprises core tube 9 and lower core tube 10, central tube 1 lower outside has core barrel external screw thread 11, the upper outside of upper core tube 9 has upper core pipe outer shroud platform 12, in correspondence, on upper core tube 9 inwalls of core pipe outer shroud platform 12 positions, there is upper core pipe inner groove 13, on the sidewall of upper core pipe inner groove 13, there is upper core pipe internal thread, central tube 1 bottom is fixedly mounted in upper core pipe inner groove 13 by core barrel external screw thread 11 and upper core pipe internal thread, upper core tube 9 lower outsides have upper core pipe external screw thread 14, the upper outside of lower core tube 10 has lower core pipe outer shroud platform 15, on lower core tube 10 inwalls of corresponding lower core pipe outer shroud platform 15 positions, there is lower core pipe inner groove 16, on the sidewall of lower core pipe inner groove 16, there is lower core pipe internal thread, upper core tube 9 bottoms are fixedly mounted in lower core pipe inner groove 16 by upper core pipe external screw thread 14 and lower core pipe internal thread, lower core tube 10 lower outsides have lower core pipe external screw thread 17, under having, the upper inside wall of lower contact 2 connects inner groove 18, under connect under having on the sidewall of inner groove 18 and connect internal thread, lower core tube 10 bottoms by lower core pipe external screw thread 17 and under connect internal thread and be fixedly mounted on down and connect in inner groove 18, under lower contact 2 middle parts outsides have, connect outer shroud platform 19 and lower contact 2 upper and lowers formed down respectively connect axle journal 20 and under connect lower axle journal, under connect axle journal 20 outer cover lower fluid cylinder cover 8 be housed, the lower surface of lower fluid cylinder cover 8 is sitting in down on the upper surface that connects outer shroud platform 19, lower fluid cylinder overlaps 8 bottoms and is fixed on down and is connected on axle journal 20 by lower cylinder sleeve shear pin 21, in the upper inside wall of lower fluid cylinder cover 8, there is lower cylinder internal thread 22 and be installed with fluid cylinder female connector 7, fluid cylinder female connector 7 is sleeved on lower core tube 10 outsides and can moves up and down, fluid cylinder female connector 7 lower ends, the upper end of lower contact 2, lower core tube 10 outsides and lower fluid cylinder overlap and between 8 inwalls, form lower hydraulic pressure chamber 23, the lower pressure transmission hole 24 that has outer end to be connected with lower hydraulic pressure chamber 23 on lower core tube 10 inwalls of corresponding lower contact 2 upper end positions, there is liquid female connector outer shroud platform 25 in the middle part outside of fluid cylinder female connector 7 makes fluid cylinder female connector 7 upper and lowers form respectively in liquid female connector axle journal 27 under axle journal 26 and liquid female connector, under liquid female connector, on the lateral surface of axle journal 27, there is liquid female connector external screw thread, fluid cylinder female connector 7 is fixedly mounted on the upper inside wall of lower fluid cylinder cover 8 by liquid female connector external screw thread and lower cylinder internal thread 22, the lower surface of liquid female connector outer shroud platform 25 is sitting on the upper surface of lower fluid cylinder cover 8, in the upper inside wall of middle fluid cylinder cover 6, there is ring platform 28 in middle cylinder, middle fluid cylinder cover 6 is sleeved on upper core tube 9 outsides and can moves up and down by encircling platform 28 in middle cylinder, ring platform 28 lower ends in middle cylinder, lower core tube 10 upper ends, hydraulic cavities 29 during upper core tube 9 outsides and middle fluid cylinder overlap between 6 inwalls and to form, the middle pressure transmission hole 30 that has outer end to be connected with middle hydraulic cavities 29 on upper core tube 9 inwalls of corresponding lower core tube 10 upper end positions, lower core pipe outer shroud platform 15 lower ends, fluid cylinder female connector 7 upper ends, lower core tube 10 outsides and middle fluid cylinder overlap the lower back pressure cavity 31 of formation between 6 inwalls, the middle fluid cylinder of corresponding fluid cylinder female connector 7 upper end positions overlaps the lower delivery hole 32 that has the inner to be connected with lower back pressure cavity 31 on 6 lateral surfaces, middle cylinder axle journal 33 is arranged at the top of middle fluid cylinder cover 6, the middle fluid cylinder of middle cylinder axle journal 33 bottoms overlaps cylinder circular bead surface 34 in 6 outsides formation, middle cylinder axle journal 33 outer cover are equipped with fluid cylinder cover 5, the lower surface of upper fluid cylinder cover 5 is sitting on middle cylinder circular bead surface 34, the lower end of lower seat hang device holds out against on the upper surface of upper fluid cylinder cover 5, in the upper inside wall of upper fluid cylinder cover 5, there is ring platform 35 in upper cylinder half, upper fluid cylinder cover 5 is sleeved on central tube 1 outside and can moves up and down by encircling platform 35 in upper cylinder half, ring platform 35 lower ends in upper cylinder half, upper core tube 9 upper ends, central tube 1 outside and upper fluid cylinder overlap the upper hydraulic cavities 36 of formation between 5 inwalls, the upper pressure transmission hole 37 that has outer end to be connected with upper hydraulic cavities 36 on central tube 1 inwall of core tube's 9 upper end positions in correspondence, upper core pipe outer shroud platform 12 lower ends, middle fluid cylinder overlaps 6 upper ends, upper fluid cylinder overlaps the upper back pressure cavity 38 of formation between 5 inwalls and upper core tube 9 lateral surfaces, the upper fluid cylinder that in correspondence, fluid cylinder overlaps 6 upper end positions overlaps the inner upper delivery hole 39 being connected with upper back pressure cavity 38 on 5 lateral surfaces.Because downhole tool is far away apart from hydraulic pump, tend to cause fluid pressure loss larger, the active force that single stage hydraulic cylinder drives is often less, usually causes packing element to expand not in place, causes packer sealing poor-performing, and in the present invention, pressure fluid passes through the tube chamber of central tube 1 respectively from lower pressure transmission hole 24, middle pressure transmission hole 30 and upper pressure transmission hole 37 enter lower hydraulic pressure chamber 23 simultaneously, middle hydraulic cavities 29 and upper hydraulic cavities 36, make fluid cylinder cover 5, three grades of hydraulic cylinders of middle fluid cylinder cover 6 and lower fluid cylinder cover 8 move simultaneously, descend the liquid in back pressure cavity 31 and upper back pressure cavity 38 to discharge from lower delivery hole 32 and upper delivery hole 39 respectively simultaneously, the driving pressure acting on plug packing device can increase three times than the pressure of single stage hydraulic cylinder, like this, using lower fluid pressure just can realize reliable seat hangs, ensure that seat of honour hang device and lower hang device seat are suspended to position, plug packing device positiver sealing.
as shown in accompanying drawing 1,2,3, the fluid cylinder cover retaining ring 40 that can prevent that lower fluid cylinder cover 8 from moving down is installed between lower contact 2 tops and lower fluid cylinder cover 8, under connect axle journal 20 tops and connect concave ring groove 41 under having, under connect on the sidewall of concave ring groove 41, be distributed with crown outward skew back below under connect external lock tooth 42, the lower fluid cylinder of corresponding lower contact 2 upper surface lower positions overlaps and on 8 inwalls, is distributed with the lower cylinder sleeve internal lock tooth 43 of crown towards interior skew back below, on the inwall of fluid cylinder cover retaining ring 40, be distributed with crown towards inner side oblique upper and with under connect the cylinder sleeve ring gear internal lock tooth that external lock tooth 42 matches, on the lateral surface of fluid cylinder cover retaining ring 40, be distributed with crown oblique upper and the cylinder sleeve ring gear external lock tooth that matches with lower cylinder sleeve internal lock tooth 43 toward the outer side, fluid cylinder cover retaining ring 40 lower ends are sitting in down on the lower surface that connects concave ring groove 41, cylinder sleeve ring gear internal lock tooth with under connect external lock tooth 42 and be meshed, cylinder sleeve ring gear external lock tooth is meshed with lower cylinder sleeve internal lock tooth 43.Fluid cylinder cover retaining ring 40 can ensure that hydraulic drive moves and upwards push plug packing device, seat of honour hang device and a lower hang device on continuing, and realizes reliably setting.
as shown in accompanying drawing 1,2,3, lower seat hang device comprises that spacing interstage sleeve 44, lower starting taper cover 45, lower hang tag watts 46 and can prevent that lower starting taper from overlapping the 45 tapered sleeve retaining rings 47 that move down, spacing interstage sleeve 44, lower starting taper cover 45 and lower watt 46 central tube 1 outsides that are from up to down sleeved on successively between plug packing device and hydraulic drive that hang tag, interstage sleeve axle journal 48 is arranged at the bottom of spacing interstage sleeve 44, the upper inside wall of lower starting taper cover 45 has interstage sleeve mounting groove 49, interstage sleeve axle journal 48 is arranged on interstage sleeve mounting groove 49 inside, interstage sleeve axle journal 48 and lower starting taper cover 45 are fixed together by lower tapered sleeve shear pin 50, on central tube 1 lateral surface of corresponding lower tapered sleeve shear pin 50 positions, there is lower extension shear pin groove 51, the inner of lower tapered sleeve shear pin 50 holds out against on the bottom surface of lower extension shear pin groove 51, the outer lower portion of lower starting taper cover 45 has up big and down small lower tapered sleeve starting taper face 52, lower seat hangs tag on watts 46 lateral surface and is distributed with crown lower watt of latch 53 of below toward the outer side, hang tag watts 46 upper inside wall of lower seat has the lower watt of conical surface matching with lower tapered sleeve starting taper face 52, hang tag watts 46 top of lower seat is distributed with the lower watt-minute lobe groove 54 of opening upwards along even circumferential, the upper surface of hydraulic drive holds out against on lower watts 46 the lower surface of hanging tag, and hang tag watts 46 the lower watt of conical surface of lower seat holds out against on the lower tapered sleeve starting taper face 52 of lower starting taper cover 45, and the upper end of spacing interstage sleeve 44 holds out against on the lower surface of plug packing device, between central tube 1 and lower starting taper cover 45, tapered sleeve retaining ring 47 is installed, the lower starting taper of interstage sleeve mounting groove 49 bottoms overlaps lower retaining ring mounting groove 55 on 45 inwalls, on the sidewall of lower retaining ring mounting groove 55, be distributed with the tapered sleeve internal lock tooth 56 of crown towards interior skew back below, on central tube 1 lateral surface of corresponding spacing interstage sleeve 44 and lower retaining ring mounting groove 55 lower positions, be distributed with crown external lock tooth 57 under the core barrel of oblique upper toward the outer side, on the inwall of tapered sleeve retaining ring 47, be distributed with crown towards interior skew back below and the tapered sleeve ring gear internal lock tooth matching with external lock tooth 57 under core barrel, on the outer wall of tapered sleeve retaining ring 47, be distributed with crown oblique upper and the tapered sleeve ring gear external lock tooth that matches with tapered sleeve internal lock tooth 56 toward the outer side, the lower end of tapered sleeve retaining ring 47 is sitting on the lower surface of lower retaining ring mounting groove 55, the lower end of interstage sleeve axle journal 48 is pressed on the upper surface of tapered sleeve retaining ring 47, tapered sleeve ring gear internal lock tooth is meshed with external lock tooth 57 under core barrel, tapered sleeve ring gear external lock tooth is meshed with tapered sleeve internal lock tooth 56.The wedge of spraining in pipe is honored as a queen, and due to the effect of tapered sleeve retaining ring 47, the seat of honour hangs tag watts 59, upper auxiliary plug 66, main plug 67 can be because release rebound deformation causes seal failure, will continue to keep packing effect.
as shown in accompanying drawing 1,2,3, seat of honour hang device comprises that tile mounting base sleeve pipe 58, the seat of honour hang tag watts 59 and upper starting taper cover 60, tile mounting base sleeve pipe 58 is fixedly mounted on central tube 1 top, the seat of honour hang tag watts 59 and upper starting taper cover 60 be from up to down set in central tube 1 outside, the upper outside of upper starting taper cover 60 has up-small and down-big upper tapered sleeve starting taper face 61, upper starting taper overlaps 60 outer middle side parts to be had upper tapered sleeve shear pin hole and tapered sleeve shear pin 62 is installed, in correspondence, on central tube 1 lateral surface of tapered sleeve shear pin 62 positions, there is the seat of honour to hang shear pin groove 63, the inner of upper tapered sleeve shear pin 62 holds out against at the seat of honour and hangs on the bottom surface of shear pin groove 63, the upper end of plug packing device holds out against on the lower surface of upper starting taper cover 60, the seat of honour hangs tag and is distributed with crown upper watt latch 64 of top toward the outer side on watts 59 lateral surface, the upper watt conical surface matching with upper tapered sleeve starting taper face 61 is arranged at hang tag watts 59 inwall bottom, the seat of honour, hang tag watts 59 bottom, the seat of honour is distributed with along even circumferential the upper watt-minute lobe groove 65 that Open Side Down, the upper tapered sleeve starting taper face 61 of upper starting taper cover 60 holds out against on the seat of honour hangs tag upper watt conical surface of watts 59, and hang tag watts 59 upper surface, the seat of honour holds out against on the lower surface of tile mounting base sleeve pipe 58.Seat of honour hang device can further improve the reliability that seat is hung.
as shown in accompanying drawing 1,2,3, plug packing device comprises auxiliary plug 66, main plug 67 and lower auxiliary plug 68; Upper auxiliary plug 66, main plug 67 and lower auxiliary plug 68 are from up to down sleeved on central tube 1 outside, middle part successively, the inwall middle part of main plug 67 is fixed with support ring 69, on the inwall of support ring 69, have pushing out ring seal groove 70 and pushing out ring sealing ring is installed, the lower end of the upper end of upper auxiliary plug 66 and lower auxiliary plug 68 is fixed with respectively metal toroidal shell 71 and lower metal toroidal shell 72.67 main packing formation functions of main plug, upper auxiliary plug 66 and lower auxiliary plug 68 play auxiliary packing effect, and upper auxiliary plug 66, lower auxiliary plug 68 are used in conjunction with packing better effects if with main plug 67; Support ring 69 preferably vulcanizes and is fixed on main plug 67, upper metal toroidal shell 71 and lower metal toroidal shell 72 preferably vulcanize and are fixed on auxiliary plug 66 and lower auxiliary plug 68 respectively, when support ring 69, upper metal toroidal shell 71 and lower metal toroidal shell 72 can prevent work there is irregular deformation in plug, and pushing out ring sealing ring can ensure that between central tube 1 outside and main plug 67 inwalls, sealing is reliable.
as shown in accompanying drawing 1,2,3, tile mounting base sleeve pipe 58 is by cover for seat release shear pin 73 and can prevent that the deck cover retaining ring 74 that tile mounting base sleeve pipe 58 moves down is arranged on central tube 1 top, the upper outside of central tube 1 has cover for seat erection loop platform 75, tile mounting base sleeve pipe 58 is sleeved on cover for seat erection loop platform 75 outsides and can moves up and down, tile mounting base sleeve pipe 58 outer upper have deck cover shear pin hole and cover for seat release shear pin 73 are installed, on cover for seat erection loop platform 75 lateral surfaces of corresponding cover for seat release shear pin 73 positions, there is cover for seat release shear pin groove 76, the inner of cover for seat release shear pin 73 holds out against on the bottom surface of cover for seat release shear pin groove 76, there is cover for seat limited ring dais 77 cover for seat erection loop platform 75 outsides that are positioned at tile mounting base sleeve pipe 58 top positions, between cover for seat limited ring dais 77 lower surfaces and tile mounting base sleeve pipe 58 upper surfaces, there is release distance 78, central tube 1 outside of cover for seat erection loop platform 75 belows is distributed with crown external lock tooth 79 on the core barrel of oblique upper toward the outer side, in the lower inner wall of tile mounting base sleeve pipe 58, be distributed with the deck cover internal lock tooth 80 of crown towards interior skew back below, on the inwall of deck cover retaining ring 74, be distributed with crown towards interior skew back below and the deck ring gear internal lock tooth matching with external lock tooth 79 on core barrel, on the lateral surface of deck cover retaining ring 74, be distributed with crown oblique upper and the deck ring gear external lock tooth that matches with deck cover internal lock tooth 80 toward the outer side, the lower end of deck cover retaining ring 74 is sitting in the seat of honour and hangs tag on watts 59 upper surface, deck ring gear internal lock tooth is meshed with external lock tooth 79 on core barrel, deck ring gear external lock tooth is meshed with deck cover internal lock tooth 80.Cover for seat release shear pin 73 preferably uses hardness higher than lower cylinder sleeve shear pin 21, the material manufacture of lower tapered sleeve shear pin 50 and upper tapered sleeve shear pin 62 material hardnesses, for example cover for seat release shear pin 73 uses stainless steel manufacture, and lower cylinder sleeve shear pin 21, lower tapered sleeve shear pin 50 and upper tapered sleeve shear pin 62 use brass manufacture, dismantle time of the present invention at needs, by using elevated pressures to build the pressure, tile mounting base sleeve pipe 58 is cut off in cover for seat release shear pin 73 continuation and is moved, now deck cover retaining ring 74 moves tile mounting base sleeve pipe 58 on continuing, until tile mounting base sleeve pipe 58 upper ends hold out against cover for seat limited ring dais 77 lower ends, Shang watt latch 64 and lower watt of latch 53 depart from internal surface of sleeve pipe, plug packing device reinstatement simultaneously, can realize and carrying, utilize to reclaim again.
as shown in accompanying drawing 1,2,3, in upper cylinder half, on the inwall of ring platform 35, there is upper cylinder half seal groove 81 and upper cylinder half sealing ring is installed, in middle cylinder, on the inwall of ring platform 28, there is middle cylinder seal groove 82 and middle cylinder sealing ring is installed, on fluid cylinder female connector 7 inwalls of corresponding liquid female connector outer shroud platform 25 medium positions, have liquid female connector seal groove 83 and liquid female connector sealing ring is installed; The outer upper of upper core pipe outer shroud platform 12 has upper core pipe external seal groove 84 and core seal of tube circle is installed, and the outer upper of lower core pipe outer shroud platform 15 has lower core pipe external seal groove 85 and lower core seal of tube circle is installed.Each sealing ring can further improve the sealing performance of each junction.
above technical characterictic has formed most preferred embodiment of the present invention, and it has stronger compliance and best implementation result, can increase and decrease according to actual needs non-essential technical characterictic, meets the demand of different situations.
the use procedure of most preferred embodiment of the present invention: first, upper end of the present invention is connected on solid completion pipe string, and according to design parameters down to precalculated position; Secondly, operation builds the pressure, high-pressure fluid is entered the tube chamber of upper core tube 9 and lower core tube 10 by the inner chamber of central tube 1, enter lower hydraulic pressure chamber 23, middle hydraulic cavities 29 and upper hydraulic cavities 36 by lower pressure transmission hole 24, middle pressure transmission hole 30 and upper pressure transmission hole 37 simultaneously, drive lower fluid cylinder cover 8 to move upward together with fluid cylinder female connector 7, middle fluid cylinder cover 6 and upper fluid cylinder cover 5 simultaneously; Then, lower cylinder sleeve shear pin 21 is stressed to be cut off to a certain extent, during driving by fluid cylinder female connector 7, moves on fluid cylinder cover 6, upper fluid cylinder cover 5 by lower fluid cylinder cover 8, upper fluid cylinder overlaps 5 lower watt 46 lower ends that hang tag of extruding, upper end, lower seat watt 46 tops that hang tag are strutted along lower watt-minute lobe groove 54 by the lower tapered sleeve starting taper face 52 of lower starting taper cover 45, hang tag and watts 46 continue to move up with seat at present; Then, on the lower starting taper cover 45 that moves and spacing interstage sleeve 44 lower tapered sleeve shear pin 50 is cut off and continue on move, spacing interstage sleeve 44 promotes lower auxiliary plug 68, main plug 67 and upper auxiliary plug 66 and moves up, upper auxiliary plug 66 promotes to move on the upper starting taper cover 60 on its tops, until on the upper starting taper cover 60 that moves upper tapered sleeve shear pin 62 is cut off; Afterwards, on upper starting taper cover 60, move, upper starting taper overlaps 60 upper ends and struts watt 59 bottoms that hang tag, the seat of honour by upper tapered sleeve starting taper face 61 along upper watt-minute lobe groove 65, watt latch 64 and lower watt of latch 53 are fixed on internal surface of sleeve pipe, pressure continues to sprain, lower starting taper cover 45 drives in spacing interstage sleeve 44 continuation and moves the lower auxiliary plug of extruding 68 lower ends, is expanded gradually in lower auxiliary plug 68, main plug 67 and upper auxiliary plug 66 middle parts, until realize the setting borehole wall, packing stratum.
Claims (7)
1. a hydraulic sealing permanent packer, is characterized in that comprising central tube, lower contact, core tube, plug packing device, seat of honour hang device, a lower hang device and hydraulic drive, the outside, lower end of central tube is installed with core tube by screw thread, the outside, lower end of core tube is installed with lower contact by screw thread, in the upper inside wall of central tube, there is upper connecting thread, in the lower inner wall of lower contact, there is lower connecting thread, the upper outside of central tube be provided with can be after pressurized expanded radially make the plug packing device of well packing, the above and below of plug packing device is separately installed with seat of honour hang device and a lower hang device that can be fixed on internal surface of sleeve pipe, the lower outside of central tube, outside and the lower contact upper outside of core tube is provided with can push plug packing device and make seat of honour hang device and hydraulic drive that a lower hang device is opened, wherein: hydraulic drive comprises fluid cylinder cover, middle fluid cylinder cover, fluid cylinder female connector and lower fluid cylinder cover, core tube comprises core tube and lower core tube, central tube lower outside has core barrel external screw thread, the upper outside of upper core tube has upper core pipe outer shroud platform, in correspondence, on the upper core tube inwall of core pipe outer shroud platform position, there is upper core pipe inner groove, on the sidewall of upper core pipe inner groove, there is upper core pipe internal thread, central tube bottom is fixedly mounted in upper core pipe inner groove by core barrel external screw thread and upper core pipe internal thread, upper core tube lower outside has upper core pipe external screw thread, the upper outside of lower core tube has lower core pipe outer shroud platform, on the lower core tube inwall of corresponding lower core pipe outer shroud platform position, there is lower core pipe inner groove, on the sidewall of lower core pipe inner groove, there is lower core pipe internal thread, upper core tube bottom is fixedly mounted in lower core pipe inner groove by upper core pipe external screw thread and lower core pipe internal thread, lower core tube lower outside has lower core pipe external screw thread, under having, the upper inside wall of lower contact connects inner groove, under connect under having on the sidewall of inner groove and connect internal thread, lower core tube bottom by lower core pipe external screw thread and under connect internal thread and be fixedly mounted on down and connect in inner groove, under lower contact middle part outside has, connect outer shroud platform and lower contact upper and lower formed down respectively connect axle journal and under connect lower axle journal, under connect axle journal outer cover lower fluid cylinder cover be housed, the lower surface of lower fluid cylinder cover is sitting in down on the upper surface that connects outer shroud platform, lower fluid cylinder cover bottom is fixed on down and is connected on axle journal by lower cylinder sleeve shear pin, in the upper inside wall of lower fluid cylinder cover, there is lower cylinder internal thread and be installed with fluid cylinder female connector, fluid cylinder female connector is sleeved on lower core tube outside and can moves up and down, fluid cylinder female connector lower end, the upper end of lower contact, between lower core tube outside and lower liquid inboard wall of cylinder liner, form lower hydraulic pressure chamber, the lower pressure transmission hole that has outer end to be connected with lower hydraulic pressure chamber on the lower core tube inwall of corresponding lower contact upper end position, there is liquid female connector outer shroud platform in the middle part outside of fluid cylinder female connector makes fluid cylinder female connector upper and lower form respectively in liquid female connector axle journal under axle journal and liquid female connector, under liquid female connector, on the lateral surface of axle journal, there is liquid female connector external screw thread, fluid cylinder female connector is fixedly mounted on the upper inside wall of lower fluid cylinder cover by liquid female connector external screw thread and lower cylinder internal thread, the lower surface of liquid female connector outer shroud platform is sitting on the upper surface of lower fluid cylinder cover, in the upper inside wall of middle fluid cylinder cover, there is ring platform in middle cylinder, middle fluid cylinder cover is sleeved on upper core tube outside and can moves up and down by encircling platform in middle cylinder, Huan Tai lower end in middle cylinder, lower core tube upper end, hydraulic cavities in forming between upper core tube outside and middle liquid inboard wall of cylinder liner, the middle pressure transmission hole that has outer end to be connected with middle hydraulic cavities on the upper core tube inwall of corresponding lower core tube upper end position, lower core pipe outer shroud platform lower end, fluid cylinder female connector upper end, between lower core tube outside and middle liquid inboard wall of cylinder liner, form lower back pressure cavity, on the middle fluid cylinder cover lateral surface of corresponding fluid cylinder female connector upper end position, there is the inner lower delivery hole being connected with lower back pressure cavity, middle cylinder axle journal is arranged at the top of middle fluid cylinder cover, cylinder circular bead surface during the middle fluid cylinder cover outside of middle cylinder axle journal bottom forms, middle cylinder axle journal outer cover is equipped with fluid cylinder cover, the lower surface of upper fluid cylinder cover is sitting on middle cylinder circular bead surface, the lower end of lower seat hang device holds out against on the upper surface of upper fluid cylinder cover, in the upper inside wall of upper fluid cylinder cover, there is ring platform in upper cylinder half, upper fluid cylinder cover is sleeved on central tube outside and can moves up and down by encircling platform in upper cylinder half, Huan Tai lower end in upper cylinder half, upper core tube upper end, between central tube outside and upper liquid inboard wall of cylinder liner, form upper hydraulic cavities, the upper pressure transmission hole that has outer end to be connected with upper hydraulic cavities on the central tube inwall of core tube's upper end position in correspondence, upper core pipe outer shroud platform lower end, middle fluid cylinder set upper side, between upper liquid inboard wall of cylinder liner and upper core tube lateral surface, form upper back pressure cavity, in correspondence, on the upper fluid cylinder cover lateral surface of position, fluid cylinder set upper side, there is the inner upper delivery hole being connected with upper back pressure cavity.
2. hydraulic sealing permanent packer according to claim 1, is characterized in that being provided with and can preventing that the fluid cylinder that lower fluid cylinder cover moves down from overlapping retaining ring between lower contact top and lower fluid cylinder cover, under connect axle journal top and connect concave ring groove under having, under connect on the sidewall of concave ring groove, be distributed with crown outward skew back below under connect external lock tooth, on the lower liquid inboard wall of cylinder liner of corresponding lower contact upper surface lower position, be distributed with the lower cylinder sleeve internal lock tooth of crown towards interior skew back below, on the inwall of fluid cylinder cover retaining ring, be distributed with crown towards inner side oblique upper and with under connect the cylinder sleeve ring gear internal lock tooth that external lock tooth matches, on the lateral surface of fluid cylinder cover retaining ring, be distributed with crown oblique upper and the cylinder sleeve ring gear external lock tooth that matches with lower cylinder sleeve internal lock tooth toward the outer side, fluid cylinder cover retaining ring lower end is sitting in down on the lower surface that connects concave ring groove, cylinder sleeve ring gear internal lock tooth with under connect external lock tooth and be meshed, cylinder sleeve ring gear external lock tooth is meshed with lower cylinder sleeve internal lock tooth.
3. hydraulic sealing permanent packer according to claim 1 and 2, is characterized in that a lower hang device comprises that spacing interstage sleeve, lower starting taper cover, lower hang tag watt and can prevent the tapered sleeve retaining ring that lower starting taper cover moves down, spacing interstage sleeve, lower starting taper cover and lower hang tag and watt are from up to down sleeved on successively outside the central tube between plug packing device and hydraulic drive, interstage sleeve axle journal is arranged at the bottom of spacing interstage sleeve, the upper inside wall of lower starting taper cover has interstage sleeve mounting groove, interstage sleeve axle journal is arranged on interstage sleeve mounting groove inside, interstage sleeve axle journal and lower starting taper cover are fixed together by lower tapered sleeve shear pin, on the central tube lateral surface of corresponding lower tapered sleeve shear pin position, there is lower extension shear pin groove, the inner of lower tapered sleeve shear pin holds out against on the bottom surface of lower extension shear pin groove, the outer lower portion of lower starting taper cover has up big and down small lower tapered sleeve starting taper face, on the lateral surface that lower seat hangs tag watt, be distributed with crown lower watt of latch of below toward the outer side, the upper inside wall that lower seat hangs tag watt has the lower watt of conical surface matching with lower tapered sleeve starting taper face, the top that lower seat hangs tag watt is distributed with the lower watt-minute lobe groove of opening upwards along even circumferential, the upper surface of hydraulic drive holds out against on lower the lower surface hanging tag watt, and the lower watt of conical surface that lower seat hangs tag watt holds out against on the lower tapered sleeve starting taper face of lower starting taper cover, and the upper end of spacing interstage sleeve holds out against on the lower surface of plug packing device, between central tube and lower starting taper cover, tapered sleeve retaining ring is installed, on the lower starting taper cover inwall of interstage sleeve mounting groove bottom, there is lower retaining ring mounting groove, on the sidewall of lower retaining ring mounting groove, be distributed with the tapered sleeve internal lock tooth of crown towards interior skew back below, on the central tube lateral surface of corresponding spacing interstage sleeve and lower retaining ring mounting groove lower position, be distributed with crown external lock tooth under the core barrel of oblique upper toward the outer side, on the inwall of tapered sleeve retaining ring, be distributed with crown towards interior skew back below and the tapered sleeve ring gear internal lock tooth matching with external lock tooth under core barrel, on the outer wall of tapered sleeve retaining ring, be distributed with crown oblique upper and the tapered sleeve ring gear external lock tooth that matches with tapered sleeve internal lock tooth toward the outer side, the lower end of tapered sleeve retaining ring is sitting on the lower surface of lower retaining ring mounting groove, the lower end of interstage sleeve axle journal is pressed on the upper surface of tapered sleeve retaining ring, tapered sleeve ring gear internal lock tooth is meshed with external lock tooth under core barrel, tapered sleeve ring gear external lock tooth is meshed with tapered sleeve internal lock tooth.
4. hydraulic sealing permanent packer according to claim 3, is characterized in that seat of honour hang device comprises that tile mounting base sleeve pipe, the seat of honour hang tag watt and upper starting taper cover, tile mounting base sleeve pipe is fixedly mounted on central tube top, the seat of honour hangs tag watt and upper starting taper cover is from up to down set in central tube outside, the upper outside of upper starting taper cover has up-small and down-big upper tapered sleeve starting taper face, the outer middle side part of upper starting taper cover has upper tapered sleeve shear pin hole and tapered sleeve shear pin is installed, in correspondence, on the central tube lateral surface of tapered sleeve shear pin position, there is the seat of honour to hang shear pin groove, the inner of upper tapered sleeve shear pin holds out against at the seat of honour and hangs on the bottom surface of shear pin groove, the upper end of plug packing device holds out against on the lower surface of upper starting taper cover, on the lateral surface that the seat of honour hangs tag watt, be distributed with crown upper watt latch of top toward the outer side, the upper watt conical surface matching with upper tapered sleeve starting taper face is arranged at the inwall bottom that the seat of honour hangs tag watt, the bottom that the seat of honour hangs tag watt is distributed with along even circumferential the upper watt-minute lobe groove that Open Side Down, the upper tapered sleeve starting taper face of upper starting taper cover holds out against on the upper watt conical surface hanging tag watt at the seat of honour, and the upper surface that the seat of honour hangs tag watt holds out against on the lower surface of tile mounting base sleeve pipe.
5. hydraulic sealing permanent packer according to claim 4, is characterized in that plug packing device comprises auxiliary plug, main plug and lower auxiliary plug; Upper auxiliary plug, main plug and lower auxiliary plug are from up to down sleeved on outside, central tube middle part successively, the inwall middle part of main plug is fixed with support ring, on the inwall of support ring, have pushing out ring seal groove and pushing out ring sealing ring is installed, the upper end of upper auxiliary plug and the lower end of lower auxiliary plug are fixed with respectively metal toroidal shell and lower metal toroidal shell.
6. hydraulic sealing permanent packer according to claim 5, is characterized in that tile mounting base sleeve pipe by cover for seat release shear pin and can prevent that the deck cover retaining ring that tile mounting base sleeve pipe moves down is arranged on central tube top, the upper outside of central tube has cover for seat erection loop platform, tile mounting base casing pipe sleeve is contained in cover for seat erection loop platform outside and can moves up and down, there is deck cover shear pin hole on tile mounting base outside of sleeve top cover for seat release shear pin is installed, on the cover for seat erection loop platform lateral surface of corresponding cover for seat release shear pin position, there is cover for seat release shear pin groove, the inner of cover for seat release shear pin holds out against on the bottom surface of cover for seat release shear pin groove, there is cover for seat limited ring dais the cover for seat erection loop platform outside that is positioned at tile mounting base sleeve pipe top position, between cover for seat limited ring dais lower surface and tile mounting base sleeve pipe upper surface, there is release distance, the central tube outside of cover for seat erection loop platform below is distributed with crown external lock tooth on the core barrel of oblique upper toward the outer side, in the lower inner wall of tile mounting base sleeve pipe, be distributed with the deck cover internal lock tooth of crown towards interior skew back below, on the inwall of deck cover retaining ring, be distributed with crown towards interior skew back below and the deck ring gear internal lock tooth matching with external lock tooth on core barrel, on the lateral surface of deck cover retaining ring, be distributed with crown oblique upper and the deck ring gear external lock tooth that matches with deck cover internal lock tooth toward the outer side, the lower end of deck cover retaining ring is sitting on the upper surface that the seat of honour hangs tag watt, deck ring gear internal lock tooth is meshed with external lock tooth on core barrel, deck ring gear external lock tooth is meshed with deck cover internal lock tooth.
7. hydraulic sealing permanent packer according to claim 6, it is characterized in that having upper cylinder half seal groove and upper cylinder half sealing ring being installed on the interior inwall that encircles platform of upper cylinder half, in middle cylinder, on the inwall of ring platform, there is middle cylinder seal groove and middle cylinder sealing ring is installed, on the fluid cylinder female connector inwall of corresponding liquid female connector outer shroud platform medium position, have liquid female connector seal groove and liquid female connector sealing ring is installed; The outer upper of upper core pipe outer shroud platform has upper core pipe external seal groove and core seal of tube circle is installed, and the outer upper of lower core pipe outer shroud platform has lower core pipe external seal groove and lower core seal of tube circle is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110444479.4A CN102425392B (en) | 2011-12-27 | 2011-12-27 | Hydraulic sealing permanent packer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110444479.4A CN102425392B (en) | 2011-12-27 | 2011-12-27 | Hydraulic sealing permanent packer |
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| CN102425392A CN102425392A (en) | 2012-04-25 |
| CN102425392B true CN102425392B (en) | 2014-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110444479.4A Active CN102425392B (en) | 2011-12-27 | 2011-12-27 | Hydraulic sealing permanent packer |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR112014032851A2 (en) | 2012-07-02 | 2017-06-27 | Halliburton Energy Services Inc | shutter assembly for use in a wellbore, and method for placing a shutter assembly in a wellbore. |
| CN111927382B (en) * | 2020-08-07 | 2022-04-29 | 中国石油大学(北京) | Packer (CN) |
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| US3818987A (en) * | 1972-11-17 | 1974-06-25 | Dresser Ind | Well packer and retriever |
| US4345649A (en) * | 1980-09-05 | 1982-08-24 | Hughes Tool Company | Well packer |
| GB2280461A (en) * | 1993-07-26 | 1995-02-01 | Halliburton Co | Hydraulically set packer |
| CN2599219Y (en) * | 2003-02-18 | 2004-01-14 | 克拉玛依采油工艺研究院 | Drilling type packer with hydraulic cylinder |
| CN201068778Y (en) * | 2007-07-05 | 2008-06-04 | 辽河石油勘探局 | Slim-hole horizontal well fracturing packer |
| CN201851074U (en) * | 2010-11-21 | 2011-06-01 | 中国石油集团西部钻探工程有限公司 | Slips type anti-retreat hydraulic packer |
| CN202381032U (en) * | 2011-12-27 | 2012-08-15 | 中国石油集团西部钻探工程有限公司 | Permanent packer for hydraulic base seal |
-
2011
- 2011-12-27 CN CN201110444479.4A patent/CN102425392B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3818987A (en) * | 1972-11-17 | 1974-06-25 | Dresser Ind | Well packer and retriever |
| US4345649A (en) * | 1980-09-05 | 1982-08-24 | Hughes Tool Company | Well packer |
| GB2280461A (en) * | 1993-07-26 | 1995-02-01 | Halliburton Co | Hydraulically set packer |
| CN2599219Y (en) * | 2003-02-18 | 2004-01-14 | 克拉玛依采油工艺研究院 | Drilling type packer with hydraulic cylinder |
| CN201068778Y (en) * | 2007-07-05 | 2008-06-04 | 辽河石油勘探局 | Slim-hole horizontal well fracturing packer |
| CN201851074U (en) * | 2010-11-21 | 2011-06-01 | 中国石油集团西部钻探工程有限公司 | Slips type anti-retreat hydraulic packer |
| CN202381032U (en) * | 2011-12-27 | 2012-08-15 | 中国石油集团西部钻探工程有限公司 | Permanent packer for hydraulic base seal |
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| CN102425392A (en) | 2012-04-25 |
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