CN102979471B - Anticreep distinguish slip hydraulic hanging packer - Google Patents
Anticreep distinguish slip hydraulic hanging packer Download PDFInfo
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- CN102979471B CN102979471B CN201210527178.2A CN201210527178A CN102979471B CN 102979471 B CN102979471 B CN 102979471B CN 201210527178 A CN201210527178 A CN 201210527178A CN 102979471 B CN102979471 B CN 102979471B
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Abstract
The present invention relates to hanging packer technical field, is a kind of anticreep distinguish slip hydraulic hanging packer; It comprises central axis, piston, chamber cover, the first sleeve, the second sleeve and sliding sleeve; Be installed with chamber cover at the lower end outside of central axis, be fixed with the first sleeve that internal diameter is greater than chamber cover internal diameter in the upper end of chamber cover, form piston between the first sleeve and central axis and move axially chute.Reasonable and compact in structure of the present invention, easy to use; When hydraulic coupling promotes piston stroking upward, by upper tapered sleeve and lower tapered sleeve effect, make upper slips hangoff receptacle and lower slips hangoff receptacle in upper slips cap and lower slips cap, compress jump ring respectively, upper slips bottom and lower slips top are expanded radially into outer layer sleeve, realize hanging; Packing element sets by the realization of thrust protuberance simultaneously, simple to operate, easy for installation; To be meshed with external tooth by pawl ring internal tooth and to realize self-locking, improve the reliability hung; In upper packing element and lower rubber cylinder, there is retainer ring respectively, improve setting effect.
Description
Technical field
The present invention relates to hanging packer technical field, is a kind of anticreep distinguish slip hydraulic hanging packer.
Background technology
Utilizing packer to carry out completion practice, is that adopting more at present is also technical measures the most general; Especially along with the exploration of the tight gas reservoirs such as shale gas continues to increase, utilize multilayer staged fracturing technology to carry out increasing production the focus becoming insider and pay close attention to, multilayer staged fracturing technology requisite sport technique segment is exactly development and the utilization of the superiors' top packer; Its setting reliability is one of core technology determining that can fracturing technology complete smoothly; The hanging packer used in current on-the-spot completion exists that indoor location difficulty is large, execute-in-place reliability is not high and slips suspension force is unreliable and the technological deficiency such as packing element sealing performance is bad mostly.
Summary of the invention
The invention provides a kind of anticreep distinguish slip hydraulic hanging packer, overcome the deficiency of above-mentioned prior art, it effectively can solve the problem that hanging packer indoor location difficulty is large, execute-in-place reliability is not high, slips suspension force is unreliable and packing element sealing performance is bad used at present.
Technical scheme of the present invention is realized by following measures: a kind of anticreep distinguish slip hydraulic hanging packer, comprises central axis, piston, chamber cover, the first sleeve, the second sleeve and sliding sleeve; Chamber cover is installed with at the lower end outside of central axis, the first sleeve that internal diameter is greater than chamber cover internal diameter is fixed with in the upper end of chamber cover, the piston forming opening upwards between first sleeve and central axis moves axially chute, the piston being provided with and can moving up and down is moved axially in chute at piston, be fixed with the sliding sleeve that internal diameter and external diameter are all greater than piston inner diameter and external diameter in the lower end of piston, the bottom of sliding sleeve and piston move axially to be had spacing between chute bottom and forms annular pressure chamber; The central axis corresponding with pressure chamber there is entrance pressure hole; Outside the upper end of piston, be fixed with boss, be fixed together by the first shear screw between boss and the first sleeve, spout hole piston and the first sleeve having at least one and piston to move axially chute respectively communicate; The packing element that can set is installed in the upper outside of central axis, is separately installed with tapered sleeve and lower tapered sleeve in the top and bottom of packing element and is fixedly installed togather by the second shear screw and the 3rd shear screw and central axis; The upper split-type slip system for hanging is set with outside the upper end of upper tapered sleeve; Have outer lug boss in the upper end of central axis, the upper end of upper split-type slip system withstands in outer lug boss; Be set with lower split-type slip system at the lower end outside of lower tapered sleeve, between the bottom of lower split-type slip system and piston tip, form the self-locking installation cavity of annular; At self-locking installation cavity internal fixtion, self-locking device is installed.
Here is the further optimization and/or improvements to foregoing invention technical scheme:
Above-mentioned upper split-type slip system can comprise upper slips, upper slips cap and jump ring; Central axis above epicone cover is provided with upper slips cap, and upper slips cap and central axis form the upper slips mounting groove that Open Side Down; At least three outsides are had to have the upper slips of cone tooth at upper slips mounting groove inner periphery distributing installation; There is axial draw-in groove corresponding with upper slips cap axial length respectively in the upper outside of each upper slips, in each axial draw-in groove, be separately installed with jump ring; The outer end of jump ring withstands on upper slips cap; The inner of jump ring by top, the top of upper slips on center shaft; The bottom of each upper slips outward-dipping and and form draw-in groove in up-narrow and down-wide taper between central axis; The upper outside of upper tapered sleeve is lower wide lower narrow taper type, and the upper end of upper tapered sleeve to be arranged in taper in draw-in groove; The jump ring installation groove be convenient to jump ring and installed is distributed with in upper slips cap lower circumference; Lower split-type slip system comprises lower slips, lower slips cap and jump ring; Central axis below lower tapered sleeve is set with lower slips cap, between lower slips cap and central axis, forms the lower slips mounting groove of opening upwards; The outside of at least three arcs is had to have the lower slips of cone tooth at lower slips mounting groove inner periphery distributing installation; The lower outside of slips has axial draw-in groove corresponding with lower slips cap axial length respectively in each of the lower, in each axial draw-in groove, be separately installed with jump ring; The outer end of jump ring withstands on lower slips cap; The inner of jump ring by top, the bottom of lower slips on center shaft; The upper section slants outward of each lower slips also and between central axis forms taper lower bayonet slot wide at the top and narrow at the bottom; The lower outside of lower tapered sleeve is lower narrow lower wide taper type, and the lower end of lower tapered sleeve is arranged in taper lower bayonet slot; ; The jump ring installation groove be convenient to jump ring and installed is had in lower slips cap top circle distribution; The connection boss of annular is installed with in the lower end of lower slips cap; Connecting boss is arranged in the second sleeve; In the bottom connecting boss, there is the up-narrow and down-wide taper mounting groove that Open Side Down, between taper mounting groove and top land, form the self-locking installation cavity of annular.
Circle distribution can be provided with the outward-dipping upper slips in six bottoms in above-mentioned upper slips cap, the both sides, top of each upper slips have docking boss respectively, and it is circular that docking boss docks formation mutually; Have the lower slips of six upper section slants outward at lower slips cap inner periphery distributing installation, the both sides, bottom of each lower slips have docking boss respectively, and it is circular that docking boss docks formation mutually.
Above-mentionedly overlap the limited impression that central axis corresponding to top can have annular with upper slips and epicone, the top internal fixtion of limited impression be provided with on tapered sleeve move spacing opening sleeve, upper slips is sleeved on opening sleeve; The opening draw-in groove be meshed with opening sleeve is had in epicone cover top.
Above-mentioned self-locking device can comprise pawl ring, retainer ring and waveform compression spring; In self-locking installation cavity, be provided with top from top to bottom is successively up-narrow and down-wide pawl ring, retainer ring and waveform compression spring; Retainer ring and pawl ring withstand in taper mounting groove by the upper end of waveform compression spring, and the lower end of waveform compression spring withstands on boss; There is the internal tooth of back taper in the inside of pawl ring, outside the central axis above pawl ring, have the external tooth be meshed with internal tooth.
The upper outside of above-mentioned central axis can be set with two upper packing elements and lower rubber cylinder that can set from top to bottom successively, is installed with grommet between upper packing element and lower rubber cylinder by sulfuration; There is the annular mounting groove in outer narrow inner width respectively in the inside of upper packing element and lower rubber cylinder, in annular mounting groove, by sulfuration, retainer ring is installed; Upper baffle ring and lower baffle ring is installed with respectively by sulfuration in upper packing element upper end and lower rubber cylinder lower end; The upper end of upper baffle ring withstands on the bottom of tapered sleeve, and the lower end of lower baffle ring is seated on lower tapered sleeve.
Above-mentioned connection boss there is external screw thread, connects boss and can be fixedly mounted in the second sleeve by screw thread; Have internal thread on the top of chamber cover, the lower end of central axis and chamber are overlapped and are fixed together by screw thread.
The lower end of above-mentioned chamber cover has external screw thread to connect boss, and cover lower end, chamber can be installed with lower contact by screw thread; Lower contact and chamber cover are installed with holding screw; There are internal thread or external screw thread in the lower end of lower contact, have external screw thread or internal thread in the upper end of central axis.
The central axis of the lower end of above-mentioned piston can be provided with can by the snap ring of piston axial location and be positioned at pressure chamber.
Sealing ring can be installed with between above-mentioned each retainer ring and central axis; Sliding sleeve respectively and central axis and chamber overlap between be installed with sealing ring; Sealing ring is installed with between the top of chamber cover and central axis; Sealing ring is installed with between the lower end of chamber cover and lower contact.
Reasonable and compact in structure of the present invention, easy to use; When hydraulic coupling promotes piston stroking upward, by upper tapered sleeve and lower tapered sleeve effect, make upper slips hangoff receptacle and lower slips hangoff receptacle in upper slips cap and lower slips cap, compress jump ring respectively, upper slips bottom and lower slips top are expanded radially into outer layer sleeve, realize hanging; Packing element sets by the realization of thrust protuberance simultaneously, simple to operate, easy for installation; To be meshed with external tooth by pawl ring internal tooth and to realize self-locking, improve the reliability hung; In upper packing element and lower rubber cylinder, there is retainer ring respectively, improve setting effect.
Accompanying drawing explanation
Accompanying drawing 1 is that the master on preferred embodiment top looks half section structural representation.
Accompanying drawing 2 is that the master of preferred embodiment bottom looks half section structural representation.
Accompanying drawing 3 is I to partial enlargement structural representation in accompanying drawing 1.
Accompanying drawing 4 is the axle geodesic structure schematic diagram of lower split-type slip system in the present invention.
Accompanying drawing 5 is the axle geodesic structure schematic diagram of lower slips in the present invention.
Coding in accompanying drawing is respectively: axle centered by 1, 2 is spout hole, 3 is outer lug boss, 4 is piston, 5 is boss, 6 is the first shear screw, 7 is chamber cover, 8 is the second sleeve, 9 is pressure chamber, 10 is entrance pressure hole, 11 is upper slips cap, 12 is axial draw-in groove, 13 is jump ring, 14 is lower slips cap, 15 is upper tapered sleeve, 16 is lower tapered sleeve, 17 for connecting boss, 18 is the first sleeve, 19 is docking boss, 20 is upper slips, 21 is lower slips, 22 move axially chute for piston, 23 is limited impression, 24 is opening sleeve, 25 is self-locking installation cavity, 26 is pawl ring, 27 is retainer ring, 28 is waveform compression spring, 29 is internal tooth, 30 is external tooth, 31 is lower rubber cylinder, 32 is grommet, 33 is retainer ring, 34 is upper baffle ring, 35 is lower baffle ring, 36 is external screw thread connection boss, 37 is lower contact, 38 is holding screw, 39 is snap ring, 40 is sealing ring, 41 is upper packing element, 42 is the second shear screw, 43 is the 3rd shear screw, 44 is sliding sleeve.
Detailed description of the invention
The present invention by the restriction of following embodiment, can not 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 all be described according to the Butut mode of Figure of description 1, as: the position relationship of upper and lower, left and right etc. determines according to the Butut direction of Figure of description 1.
Below in conjunction with embodiment and accompanying drawing, the invention will be further described:
As shown in accompanying drawing 1,2, this anticreep distinguish slip hydraulic hanging packer comprises central axis 1, piston 4, chamber cover the 7, first sleeve 8, second sleeve 18 and sliding sleeve 44; Chamber cover 7 is installed with at the lower end outside of central axis 1, be fixed with internal diameter in the upper end of chamber cover 7 and be greater than the first sleeve 8 that 7 internal diameters are overlapped in chamber, the piston forming opening upwards between first sleeve 8 and central axis 1 moves axially chute 22, the piston 4 being provided with and can moving up and down is moved axially in chute 22 at piston, be fixed with the sliding sleeve 44 that internal diameter and external diameter are all greater than piston 4 internal diameter and external diameter in the lower end of piston 4, the bottom of sliding sleeve 44 and piston move axially to be had spacing between chute 22 bottom and forms annular pressure chamber 9; The central axis 1 corresponding with pressure chamber 9 there is entrance pressure hole 10; Outside the upper end of piston 4, be fixed with boss 5, be fixed together by the first shear screw 6 between boss 5 and the first sleeve 8, the spout hole 2 piston 4 and the first sleeve 8 having at least one and piston to move axially chute 22 respectively communicate; The packing element that can set is installed in the upper outside of central axis 1, is separately installed with tapered sleeve 15 and lower tapered sleeve 16 in the top and bottom of packing element and is fixedly installed togather with central axis 1 by the second shear screw 42 and the 3rd shear screw 43; The upper split-type slip system for hanging is set with outside the upper end of upper tapered sleeve 15; Have outer lug boss 3 in the upper end of central axis 1, the upper end of upper split-type slip system withstands in outer lug boss 3; Be set with lower split-type slip system at the lower end outside of lower tapered sleeve 16, between the bottom of lower split-type slip system and piston 4 top, form the self-locking installation cavity 25 of annular; At self-locking installation cavity 25 internal fixtion, self-locking device is installed.Ground pitching is sprained pressure, and high-pressure fluid enters pressure chamber 9 by entrance pressure hole 10, and fluid pressure promotes sliding sleeve 44 and piston 4 and moves axially in chute 22 at piston and move up; First shear screw 6 is cut off, up and cut off the 3rd shear screw 43 and the second shear screw 42 successively on piston 4, lower split-type slip system, lower tapered sleeve 16, packing element and upper tapered sleeve 15 are up, the up rear expanded radially of the thrust that upper split-type slip system is subject to tapered sleeve 15 is suspended in sleeve pipe, and the thrust expanded radially that lower split-type slip system is subject to lower tapered sleeve 16 is suspended in sleeve pipe; Continue to exert pressure, packing element sets by the realization of thrust protuberance, realizes the hanging setting of the present invention in sleeve pipe; Self-locking device can prevent split-type slip system under after hanging setting descending by effects such as gravity simultaneously, improves hanging setting efficiency; Reliability is high, operation and easy to use.
According to actual needs, above-mentioned anticreep distinguish slip hydraulic hanging packer can be made further optimization and/or improvements:
As shown in accompanying drawing 1,2, upper split-type slip system comprises upper slips 20, upper slips cap 11 and jump ring 13; Central axis 1 above upper tapered sleeve 15 is provided with upper slips cap 11, and upper slips cap 11 and central axis 1 form the upper slips mounting groove that Open Side Down; At least three outsides are had to have the upper slips 20 of cone tooth at upper slips mounting groove inner periphery distributing installation; There is axial draw-in groove 12 corresponding with upper slips cap 11 axial length respectively in the upper outside of each upper slips 20, in each axial draw-in groove 12, be separately installed with jump ring 13; The outer end of jump ring 13 withstands on upper slips cap 11; The top of upper slips 20 withstands on central axis 1 by the inner of jump ring 13; The bottom of each upper slips 20 outward-dipping and and form draw-in groove in up-narrow and down-wide taper between central axis 1; The upper outside of upper tapered sleeve 15 is lower wide lower narrow taper type, and the upper end of upper tapered sleeve 15 to be arranged in taper in draw-in groove; The jump ring installation groove be convenient to jump ring 13 and installed is distributed with in upper slips cap 11 lower circumference; Lower split-type slip system comprises lower slips 21, lower slips cap 14 and jump ring 13; Central axis 1 below lower tapered sleeve 16 is set with lower slips cap 14, between lower slips cap 14 and central axis 1, forms the lower slips mounting groove of opening upwards; The outside of at least three arcs is had to have the lower slips 21 of cone tooth at lower slips mounting groove inner periphery distributing installation; The lower outside of slips 21 has axial draw-in groove 12 corresponding with lower slips cap 14 axial length respectively in each of the lower, in each axial draw-in groove 12, be separately installed with jump ring 13; The outer end of jump ring 13 withstands on lower slips cap 14; The bottom of lower slips 21 withstands on central axis 1 by the inner of jump ring 13; The upper section slants outward of each lower slips 21 also and between central axis 1 forms taper lower bayonet slot wide at the top and narrow at the bottom; The lower outside of lower tapered sleeve 16 is lower narrow lower wide taper type, and the lower end of lower tapered sleeve 16 is arranged in taper lower bayonet slot; ; The jump ring installation groove be convenient to jump ring 13 and installed is had in lower slips cap 14 top circle distribution; The connection boss 17 of annular is installed with in the lower end of lower slips cap 14; Connecting boss 17 is arranged in the second sleeve 18; In the bottom connecting boss 17, there is the up-narrow and down-wide taper mounting groove that Open Side Down, between taper mounting groove and piston 4 top, form the self-locking installation cavity 25 of annular.Ground pitching is sprained pressure, high-pressure fluid enters pressure chamber 9 by entrance pressure hole 10, first shear screw 6 is cut off, promote piston 4, boss 5 and the second sleeve 5 up, thrust cuts off the 3rd shear screw 43 and the second shear screw 42 successively, and lower slips cap 14, lower slips 21, jump ring 13, lower tapered sleeve 16, packing element and upper tapered sleeve 15 are up, upper tapered sleeve 15 is up in draw-in groove in taper, and by conical surface effect, upper slips 20 radial compression jump ring 13, the bottom of upper slips 20 extends radially out to outer layer sleeve; Taper lower bayonet slot to be upwards sleeved on lower tapered sleeve 16 and by conical surface effect, lower slips 21 radial compression jump ring 13, and the top of lower slips 21 extends radially out to outer layer sleeve; High-pressure fluid continues applied thrust, and packing element is radially expanded to outer layer sleeve wall, realizes setting; By when entering in sleeve pipe under the present invention, the seat in advance that jump ring 13 can effectively prevent upper slips 20 and lower slips 21 is hung; Upper slips 20 and lower slips 21 are when radial dilatation simultaneously, and plastotype distortion does not occur for upper slips 20 and lower slips 21, reusable, reduces cost of production.
As shown in accompanying drawing 1,4,5, at the upper slips 20 that upper slips cap 11 inner periphery distributing installation has six bottoms outward-dipping, the both sides, top of each upper slips 20 have docking boss 19 respectively, and docking boss 19 mutually docking is formed circular; Have the lower slips 21 of six upper section slants outward at lower slips cap 14 inner periphery distributing installation, the both sides, bottom of each lower slips 21 have docking boss 19 respectively, and docking boss 19 mutually docking is formed circular.Docking boss 19 make to be arranged on upper slips 20 in upper slips cap 11 and lower slips cap 14 and lower slips 21 radial spacing, six upper slipses 20 and six lower slipses 21 can increase itself and the contact area of central axis 1, improve the reliability of suspension.
As shown in Figure 1, the central axis 1 corresponding with upper slips 20 and upper tapered sleeve 15 top has annular limited impression 23, the top internal fixtion of limited impression 23 be provided with on tapered sleeve 15 move spacing opening sleeve 24, upper slips 20 is sleeved on opening sleeve 24; The opening draw-in groove be meshed with opening sleeve 24 is had in upper tapered sleeve 15 top.Upper tapered sleeve 15 can go upward to opening sleeve 24 bottom and carry out spacing, can prevent the excessive damage upper slips 20 of thrust; Opening sleeve 24 plays the effect of position limitation protection.
As shown in accompanying drawing 1,5, self-locking device comprises pawl ring 26, retainer ring 27 and waveform compression spring 28; In self-locking installation cavity 25, be provided with top from top to bottom is successively up-narrow and down-wide pawl ring 26, retainer ring 27 and waveform compression spring 28; Retainer ring 27 and pawl ring 26 withstand in taper mounting groove by the upper end of waveform compression spring 28, and the lower end of waveform compression spring 28 withstands on boss 5; There is the internal tooth 29 of back taper in the inside of pawl ring 26, outside the central axis 1 above pawl ring 26, have the external tooth 30 be meshed with internal tooth 29.Be meshed with external tooth 30 by internal tooth 29, piston seal can be stoped to overlap 4 descending, play the effect of self-locking and retaining.
As shown in Figure 1, be set with two upper packing elements 41 and lower rubber cylinder 31 that can set from top to bottom successively in the upper outside of central axis 1, between upper packing element 41 and lower rubber cylinder 31, be installed with grommet 32 by sulfuration; There is the annular mounting groove in outer narrow inner width respectively in the inside of upper packing element 41 and lower rubber cylinder 31, in annular mounting groove, by sulfuration, retainer ring 33 is installed; Upper baffle ring 34 and lower baffle ring 35 is installed with respectively by sulfuration in upper packing element 41 upper end and lower rubber cylinder 31 lower end; The upper end of upper baffle ring 34 withstands on the bottom of tapered sleeve 15, and the lower end of lower baffle ring 35 is seated on lower tapered sleeve 16.Grommet 32, upper baffle ring 34 and lower baffle ring 35 play axial restraint and spacing effect to upper packing element 41 and lower rubber cylinder 31; Retainer ring 33 can make packing element 41 and lower rubber cylinder 31 homogeneous deformation, improves setting effect.
As shown in accompanying drawing 1,2, connection boss 17 there is external screw thread, connect boss 17 and be fixedly mounted in the second sleeve 18 by screw thread; Have internal thread on the top of chamber cover 7, the lower end of central axis 1 and chamber are overlapped 7 and are fixed together by screw thread.Can be convenient to like this lower slips cap 14 and piston seal overlap 4 between dismounting; Dismounting between chamber cover 7 and central axis 1.
As shown in accompanying drawing 1,2, have external screw thread to connect boss 36 in the lower end of chamber cover 7, chamber is overlapped 7 lower ends and is installed with lower contact 37 by screw thread; Lower contact 37 and chamber cover 7 are installed with holding screw 38; There are internal thread or external screw thread in the lower end of lower contact 37, have external screw thread or internal thread in the upper end of central axis 1.Lower contact 37 can be convenient to the present invention for being connected with other devices of down-hole; Holding screw 38 is for the radial spacing effect of lower contact 37.
As shown in Figure 2, the central axis 1 of the lower end of piston 4 is provided with can by the snap ring 39 of piston 4 axial location and be positioned at pressure chamber 9.When installing piston seal cover 4, be convenient to axial location when piston seal overlaps 4 is installed.
As shown in accompanying drawing 1,2, between each retainer ring 33 and central axis 1, be installed with sealing ring 40; Sliding sleeve 44 respectively and central axis 1 and chamber overlap 7 between be installed with sealing ring 40; Sealing ring 40 is installed with between the top of chamber cover 7 and central axis 1; Sealing ring 40 is installed with between the lower end of chamber cover 7 and lower contact 37.Sealing ring 40 can play the effect increasing sealing between contact surface.
Following technical characteristic constitutes most preferred embodiment of the present invention, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characteristic according to actual needs, meet the demand of different situations.
The use procedure of preferred embodiment: the top first invention being arranged on completion tubular string; Reach the position of design well depth after more whole fracturing string being entered well, ground is carried out pitching and to be built the pressure operation, and high-pressure fluid enters pressure chamber 9 by entrance pressure hole 10, and along with the continuous increase of pressure, the first shear screw 6 is cut off, and it is up that hydraulic coupling promotes piston 4; Piston 4 and lower slips cap 14 move up, and lower slips 21 extends radially out to outer layer sleeve along lower slips 21 bottom exercised by the conical surface of lower tapered sleeve 16; Along with the continuous increase of hydraulic coupling, second shear screw 42 and the 3rd shear screw 43 are cut off, under the effect of fluid cylinder, lower tapered sleeve 16 drives lower baffle ring 35, retainer ring 33, lower rubber cylinder 31, grommet 32, upper packing element 41 and upper tapered sleeve 15 up successively, and upper tapered sleeve 15 draw-in groove in taper is up and make upper slips 20 radially extend out to outer layer sleeve; Realize this practicality newly to hang; Along with the continuous increase of hydraulic coupling, piston 4 continues up, and upper packing element 41 and lower rubber cylinder 31 are radially expanded to outer layer sleeve wall place by action of hydraulic force, complete the present invention setting.
Claims (22)
1. an anticreep distinguish slip hydraulic hanging packer, is characterized in that comprising central axis, piston, chamber cover, the first sleeve, the second sleeve and sliding sleeve; Chamber cover is installed with at the lower end outside of central axis, the first sleeve that internal diameter is greater than chamber cover internal diameter is fixed with in the upper end of chamber cover, the piston forming opening upwards between first sleeve and central axis moves axially chute, the piston being provided with and can moving up and down is moved axially in chute at piston, be fixed with the sliding sleeve that internal diameter and external diameter are all greater than piston inner diameter and external diameter in the lower end of piston, the bottom of sliding sleeve and piston move axially to be had spacing between chute bottom and forms annular pressure chamber; The central axis corresponding with pressure chamber there is entrance pressure hole; Outside the upper end of piston, be fixed with boss, be fixed together by the first shear screw between boss and the first sleeve, spout hole piston and the first sleeve having at least one and piston to move axially chute respectively communicate; The packing element that can set is installed in the upper outside of central axis, is separately installed with tapered sleeve and lower tapered sleeve in the top and bottom of packing element and is fixedly installed togather by the second shear screw and the 3rd shear screw and central axis; The upper split-type slip system for hanging is set with outside the upper end of upper tapered sleeve; Have outer lug boss in the upper end of central axis, the upper end of upper split-type slip system withstands in outer lug boss; Be set with lower split-type slip system at the lower end outside of lower tapered sleeve, between the bottom of lower split-type slip system and piston tip, form the self-locking installation cavity of annular; At self-locking installation cavity internal fixtion, self-locking device is installed; Wherein: upper split-type slip system comprises upper slips, upper slips cap and jump ring; Central axis above epicone cover is provided with upper slips cap, and upper slips cap and central axis form the upper slips mounting groove that Open Side Down; At least three outsides are had to have the upper slips of cone tooth at upper slips mounting groove inner periphery distributing installation; There is axial draw-in groove corresponding with upper slips cap axial length respectively in the upper outside of each upper slips, in each axial draw-in groove, be separately installed with jump ring; The outer end of jump ring withstands on upper slips cap; The inner of jump ring by top, the top of upper slips on center shaft; The bottom of each upper slips outward-dipping and and form draw-in groove in up-narrow and down-wide taper between central axis; The upper outside of upper tapered sleeve is lower wide lower narrow taper type, and the upper end of upper tapered sleeve to be arranged in taper in draw-in groove; The jump ring installation groove be convenient to jump ring and installed is distributed with in upper slips cap lower circumference; Lower split-type slip system comprises lower slips, lower slips cap and jump ring; Central axis below lower tapered sleeve is set with lower slips cap, between lower slips cap and central axis, forms the lower slips mounting groove of opening upwards; The outside of at least three arcs is had to have the lower slips of cone tooth at lower slips mounting groove inner periphery distributing installation; The lower outside of slips has axial draw-in groove corresponding with lower slips cap axial length respectively in each of the lower, in each axial draw-in groove, be separately installed with jump ring; The outer end of jump ring withstands on lower slips cap; The inner of jump ring by top, the bottom of lower slips on center shaft; The upper section slants outward of each lower slips also and between central axis forms taper lower bayonet slot wide at the top and narrow at the bottom; The lower outside of lower tapered sleeve is lower narrow lower wide taper type, and the lower end of lower tapered sleeve is arranged in taper lower bayonet slot; The jump ring installation groove be convenient to jump ring and installed is had in lower slips cap top circle distribution; The connection boss of annular is installed with in the lower end of lower slips cap; Connecting boss is arranged in the second sleeve; In the bottom connecting boss, there is the up-narrow and down-wide taper mounting groove that Open Side Down, between taper mounting groove and top land, form the self-locking installation cavity of annular; Self-locking device comprises pawl ring, retainer ring and waveform compression spring; In self-locking installation cavity, be provided with top from top to bottom is successively up-narrow and down-wide pawl ring, retainer ring and waveform compression spring; Retainer ring and pawl ring withstand in taper mounting groove by the upper end of waveform compression spring, and the lower end of waveform compression spring withstands on boss; There is the internal tooth of back taper in the inside of pawl ring, outside the central axis above pawl ring, have the external tooth be meshed with internal tooth.
2. anticreep distinguish slip hydraulic hanging packer according to claim 1, it is characterized in that the upper slips that upper slips cap inner periphery distributing installation has six bottoms outward-dipping, the both sides, top of each upper slips have docking boss respectively, and it is circular that docking boss docks formation mutually; Have the lower slips of six upper section slants outward at lower slips cap inner periphery distributing installation, the both sides, bottom of each lower slips have docking boss respectively, and it is circular that docking boss docks formation mutually.
3. anticreep distinguish slip hydraulic hanging packer according to claim 1 and 2, it is characterized in that overlapping with upper slips and epicone limited impression central axis corresponding to top having annular, the top internal fixtion of limited impression be provided with on tapered sleeve move spacing opening sleeve, upper slips is sleeved on opening sleeve; The opening draw-in groove be meshed with opening sleeve is had in epicone cover top.
4. anticreep distinguish slip hydraulic hanging packer according to claim 1 and 2, it is characterized in that the upper outside of central axis is set with two upper packing elements and lower rubber cylinder that can set from top to bottom successively, between upper packing element and lower rubber cylinder, be installed with grommet by sulfuration; There is the annular mounting groove in outer narrow inner width respectively in the inside of upper packing element and lower rubber cylinder, in annular mounting groove, by sulfuration, retainer ring is installed; Upper baffle ring and lower baffle ring is installed with respectively by sulfuration in upper packing element upper end and lower rubber cylinder lower end; The upper end of upper baffle ring withstands on the bottom of tapered sleeve, and the lower end of lower baffle ring is seated on lower tapered sleeve.
5. anticreep distinguish slip hydraulic hanging packer according to claim 3, it is characterized in that the upper outside of central axis is set with two upper packing elements and lower rubber cylinder that can set from top to bottom successively, between upper packing element and lower rubber cylinder, be installed with grommet by sulfuration; There is the annular mounting groove in outer narrow inner width respectively in the inside of upper packing element and lower rubber cylinder, in annular mounting groove, by sulfuration, retainer ring is installed; Upper baffle ring and lower baffle ring is installed with respectively by sulfuration in upper packing element upper end and lower rubber cylinder lower end; The upper end of upper baffle ring withstands on the bottom of tapered sleeve, and the lower end of lower baffle ring is seated on lower tapered sleeve.
6. the anticreep distinguish slip hydraulic hanging packer according to claim 1 or 2 or 5, it is characterized in that connecting on boss has external screw thread, connects boss and is fixedly mounted in the second sleeve by screw thread; Have internal thread on the top of chamber cover, the lower end of central axis and chamber are overlapped and are fixed together by screw thread.
7. anticreep distinguish slip hydraulic hanging packer according to claim 3, it is characterized in that connecting on boss has external screw thread, connects boss and is fixedly mounted in the second sleeve by screw thread; Have internal thread on the top of chamber cover, the lower end of central axis and chamber are overlapped and are fixed together by screw thread.
8. anticreep distinguish slip hydraulic hanging packer according to claim 4, it is characterized in that connecting on boss has external screw thread, connects boss and is fixedly mounted in the second sleeve by screw thread; Have internal thread on the top of chamber cover, the lower end of central axis and chamber are overlapped and are fixed together by screw thread.
9. the anticreep distinguish slip hydraulic hanging packer according to claim 1 or 2 or 5 or 7 or 8, it is characterized in that the lower end that chamber is overlapped has external screw thread to connect boss, cover lower end, chamber is installed with lower contact by screw thread; Lower contact and chamber cover are installed with holding screw; There are internal thread or external screw thread in the lower end of lower contact, have external screw thread or internal thread in the upper end of central axis.
10. anticreep distinguish slip hydraulic hanging packer according to claim 3, it is characterized in that the lower end that chamber is overlapped has external screw thread to connect boss, cover lower end, chamber is installed with lower contact by screw thread; Lower contact and chamber cover are installed with holding screw; There are internal thread or external screw thread in the lower end of lower contact, have external screw thread or internal thread in the upper end of central axis.
11. anticreep distinguish slip hydraulic hanging packers according to claim 4, it is characterized in that the lower end that chamber is overlapped has external screw thread to connect boss, cover lower end, chamber is installed with lower contact by screw thread; Lower contact and chamber cover are installed with holding screw; There are internal thread or external screw thread in the lower end of lower contact, have external screw thread or internal thread in the upper end of central axis.
12. anticreep distinguish slip hydraulic hanging packers according to claim 6, it is characterized in that the lower end that chamber is overlapped has external screw thread to connect boss, cover lower end, chamber is installed with lower contact by screw thread; Lower contact and chamber cover are installed with holding screw; There are internal thread or external screw thread in the lower end of lower contact, have external screw thread or internal thread in the upper end of central axis.
13. anticreep distinguish slip hydraulic hanging packers according to claim 1 or 2 or 5 or 7 or 8 or 10 or 11 or 12, the central axis that it is characterized in that the lower end of piston are provided with and the snap ring of piston axial location can be positioned at pressure chamber.
14. anticreep distinguish slip hydraulic hanging packers according to claim 3, the central axis that it is characterized in that the lower end of piston are provided with and the snap ring of piston axial location can be positioned at pressure chamber.
15. anticreep distinguish slip hydraulic hanging packers according to claim 4, the central axis that it is characterized in that the lower end of piston are provided with and the snap ring of piston axial location can be positioned at pressure chamber.
16. anticreep distinguish slip hydraulic hanging packers according to claim 6, the central axis that it is characterized in that the lower end of piston are provided with and the snap ring of piston axial location can be positioned at pressure chamber.
17. anticreep distinguish slip hydraulic hanging packers according to claim 9, the central axis that it is characterized in that the lower end of piston are provided with and the snap ring of piston axial location can be positioned at pressure chamber.
18. anticreep distinguish slip hydraulic hanging packers according to claim 4, is characterized in that being installed with sealing ring between each retainer ring and central axis; Sliding sleeve respectively and central axis and chamber overlap between be installed with sealing ring; Sealing ring is installed with between the top of chamber cover and central axis; Sealing ring is installed with between the lower end of chamber cover and lower contact.
19. anticreep distinguish slip hydraulic hanging packers according to claim 5 or 7 or 8 or 10 or 11 or 12 or 14 or 15 or 16 or 17, is characterized in that being installed with sealing ring between each retainer ring and central axis; Sliding sleeve respectively and central axis and chamber overlap between be installed with sealing ring; Sealing ring is installed with between the top of chamber cover and central axis; Sealing ring is installed with between the lower end of chamber cover and lower contact.
20. anticreep distinguish slip hydraulic hanging packers according to claim 6, is characterized in that being installed with sealing ring between each retainer ring and central axis; Sliding sleeve respectively and central axis and chamber overlap between be installed with sealing ring; Sealing ring is installed with between the top of chamber cover and central axis; Sealing ring is installed with between the lower end of chamber cover and lower contact.
21. anticreep distinguish slip hydraulic hanging packers according to claim 9, is characterized in that being installed with sealing ring between each retainer ring and central axis; Sliding sleeve respectively and central axis and chamber overlap between be installed with sealing ring; Sealing ring is installed with between the top of chamber cover and central axis; Sealing ring is installed with between the lower end of chamber cover and lower contact.
22. anticreep distinguish slip hydraulic hanging packers according to claim 13, is characterized in that being installed with sealing ring between each retainer ring and central axis; Sliding sleeve respectively and central axis and chamber overlap between be installed with sealing ring; Sealing ring is installed with between the top of chamber cover and central axis; Sealing ring is installed with between the lower end of chamber cover and lower contact.
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| CN201210527178.2A CN102979471B (en) | 2012-12-10 | 2012-12-10 | Anticreep distinguish slip hydraulic hanging packer |
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| CN201210527178.2A CN102979471B (en) | 2012-12-10 | 2012-12-10 | Anticreep distinguish slip hydraulic hanging packer |
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| CN102979471B true CN102979471B (en) | 2015-08-19 |
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| CN105257239B (en) * | 2015-10-26 | 2018-10-09 | 中国石油集团西部钻探工程有限公司 | External packer of pipe |
| CN105952412A (en) * | 2016-06-23 | 2016-09-21 | 宝鸡市元亨石油设备有限责任公司 | Saw tooth slip |
| CN106677737A (en) * | 2017-03-10 | 2017-05-17 | 北京奥赛旗石油科技开发有限公司 | Sealing assembly and sealing equipment |
| CN107939327A (en) * | 2018-01-23 | 2018-04-20 | 东营百华石油技术开发有限公司 | A kind of anchor that will be blocked pipe and be positioned on casing |
| CN109025893B (en) * | 2018-09-18 | 2024-07-02 | 中国石油天然气集团有限公司 | Detachable packer |
| CN114382436B (en) * | 2020-10-22 | 2024-03-01 | 中国石油天然气集团有限公司 | Slip mechanism |
| CN117703303B (en) * | 2024-02-06 | 2024-04-05 | 东营市华科石油科技开发有限责任公司 | Screw expansion type casing external packer |
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| CN102979471A (en) | 2013-03-20 |
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Address after: 830026 science and technology management division, West drilling and Drilling Engineering Institute, No. 326 South Central Road, Urumqi economic and Technological Development Zone, the Xinjiang Uygur Autonomous Region, China Applicant after: CNPC Xibu Drilling Engineering Company Limited Address before: 834000 the Xinjiang Uygur Autonomous Region Karamay Hongyan Road No. 80 Western Drilling Engineering Technology Research Institute of science and technology management department Applicant before: CNPC Xibu Drilling Engineering Company Limited |
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