CN202249924U - Tail pipe suspending packing assembly special for shallow horizontal well - Google Patents
Tail pipe suspending packing assembly special for shallow horizontal well Download PDFInfo
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- CN202249924U CN202249924U CN 201120270065 CN201120270065U CN202249924U CN 202249924 U CN202249924 U CN 202249924U CN 201120270065 CN201120270065 CN 201120270065 CN 201120270065 U CN201120270065 U CN 201120270065U CN 202249924 U CN202249924 U CN 202249924U
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Abstract
The utility model relates to the technical field of tail pipe suspending device serviced in a shallow horizontal well in oil exploitation, in particular to a tail pipe suspending packing assembly special for a shallow horizontal well. The tail pipe suspending packing assembly comprises an upper joint, a core pipe body, a rubber plug separating device, a seat device and a suspending device, wherein a core pipe chamber is mounted in the core pipe body; the upper part of the core pipe body is fixedly provided with the upper joint while the lower part thereof is provided with a core pipe lower screw at the outside, wherein the core pipe lower screw is connected with a casing string. The tail pipe suspending packing assembly provided by the utility model has reasonable and compact structure and convenience of use, and is capable of keeping down pressure after putting the tools into the well so as to make the suspending piston pipe shear the suspending shear pin and upwards shift, as well as adopting the suspending piston pipe to push the slips to achieve suspension, continuously keeping down pressure to make the seat piston pipe cut the seat shear pin and upwards shift, and upwards pushing the seat piston pipe to press the rubber plug separating device to achieve seat; once double-stage pressure can make hydraulic suspension and hydraulic seal done. The tail pipe suspending packing assembly provided by the utility model has the characteristics of smaller volume, simple structure, lower cost, convenience, and high efficiency.
Description
Technical field
The utility model relates to shallow water horizontal well use tail tube hanging device technique field in the oil exploitation, is the special-purpose tail tube hanging packing of a kind of shallow water horizontal well assembly.
Background technology
Tail tube hanging slot pipe or sieve tube completion have become comparatively common completion mode at present; To horizontal well, shallow well especially is because the hole angle major part of hanger place well section is all more than 70 degree; The tail pipe string is in level basically; Hanger itself only bears minimum axial load when therefore hanging, and the conventional tail pipe hanger is common to multiple well depth, multiple well type, and structure is comparatively complicated usually; Volume is bigger, uses at the shallow water horizontal well still to go into all to have certain deficiency in the well connection in cost control.
Summary of the invention
The utility model provides the special-purpose tail tube hanging packing of a kind of shallow water horizontal well assembly, has overcome the deficiency of above-mentioned prior art, it can solve effectively that existing extension hanger exists go into well connect inconvenience, complex structure, volume greatly, the cost problem of higher.
The technical scheme of the utility model realizes through following measure: the special-purpose tail tube hanging packing of a kind of shallow water horizontal well assembly comprises top connection, core barrel body, plug separating device, seat seal apparatus and suspension arrangement; Tube chamber is had the inclination in the inside of core barrel body; The top of core barrel body is installed with top connection; The outside, the bottom of core barrel body have can with screw thread under the core barrel that bunch tube is connected; The upper outside of core barrel body is equipped with the plug separating device, can be clamped on after the core barrel external of plug separating device below is equipped with and builds the pressure on the cannula cavity wall suspension arrangement with continue to build the pressure after can compress the plug separating device and make it intercept the seat seal apparatus of cannula cavity.
Be to the further optimization of above-mentioned utility model technical scheme below or/and improve:
Above-mentioned suspension arrangement can comprise suspension piston tube, suspension shear pin, thrust link, be no less than two and the slips and the rectangle voussoir that are symmetrically distributed; There is the suspension draw-in groove in the outside, bottom of core barrel body; Have on the middle part inwall of suspension piston tube and encircle platform in the suspended tubes; Have under the suspended tubes on the suspension piston tube lower inner wall of corresponding suspension draw-in groove position and encircle platform; The inner wall sleeve of suspension piston tube through ring platform in inwall and the suspended tubes of ring platform under the suspended tubes is contained in the outside, core barrel body bottom and can slides up and down, and the inner chamber that the ring platform will hang piston tube in the suspended tubes is separated into suspended tubes epicoele and suspended tubes cavity of resorption, has radially to run through outside the suspension piston tube bottom of ring platform medium position under the corresponding suspended tubes and hangs the suspension screw that encircles platform under piston tube and the suspended tubes; The suspension piston tube is fixedly mounted on the core barrel external through suspension shear pin, suspension screw and suspension draw-in groove; The inner of suspension shear pin is pressed on the groove bottom of suspension draw-in groove, and the external side of core barrel of corresponding suspended tubes cavity of resorption upper position has core barrel outer shroud platform, and the lateral surface of core barrel outer shroud platform matches with the inwall of suspended tubes cavity of resorption; The suspended tubes cavity of resorption of core barrel outer shroud platform top forms the suspension plunger shaft; On the core barrel body of corresponding suspension plunger shaft lower position the suspension pressure transmission hole is arranged, the inner of suspension pressure transmission hole is connected with the core barrel chamber, and the outer end of suspension pressure transmission hole is connected with the suspension plunger shaft; The top of suspension piston tube is installed with slips through thrust link, and the up big and down small card conical surface is arranged at the medial surface top of slips, is distributed with latch on the lateral surface of slips; The core barrel body upper outside of corresponding card conical surface position is fixed with the rectangle voussoir, the voussoir conical surface of the lateral surface of rectangle voussoir for matching with the card conical surface.
Above-mentioned seat seal apparatus can comprise seat envelope piston tube and seat envelope shear pin; Seat envelope piston tube is sleeved on the upper outside of core barrel body; The external upper lateral part of core barrel of plug separating device below has seat envelope draw-in groove; There is the seat envelope screw that radially runs through seat envelope piston tube in the seat envelope piston tube outside of respective seat envelope draw-in groove position; Seat envelope piston tube is sealed shear pin, seat envelope screw and seat envelope draw-in groove through seat and is fixedly mounted on the core barrel external, and the inner of seat envelope shear pin compresses on the groove bottom of present envelope draw-in groove; The upper surface of seat envelope piston tube is pressed on the lower surface of plug separating device; Form seat envelope annular space on external side of core barrel and the suspended tubes between the cavity wall; The seat envelope outer shroud boss that the outside, bottom of seat envelope piston tube has external diameter to match with suspended tubes epicoele internal diameter; The interior ring of the seat envelope boss that the inwall bottom of seat envelope piston tube has the external side of internal diameter and core barrel to match; It is inner and can move up and down that seat envelope piston tube is installed present envelope annular space through a ring boss in seat envelope outer shroud boss and the seat envelope, and the seat envelope annular space of seat envelope piston tube below forms a seat envelope plunger shaft, on the core barrel body of respective seat envelope plunger shaft upper position a seat envelope pressure transmission hole is arranged; The inner of seat envelope pressure transmission hole is connected with the core barrel chamber, and the outer end of seat envelope pressure transmission hole is connected with seat envelope plunger shaft; On the seat envelope piston tube of each rectangle voussoir position of correspondence the rectangular through-hole of length dimension greater than rectangular wedge block length size arranged respectively, seat envelope piston tube is sleeved on rectangle voussoir outside and can seals the piston tube axis direction along seat through rectangular through-hole and moves up and down.
Above-mentioned plug separating device can comprise packing glue packer and the joint ring that is no less than two, between adjacent two packing glue packers, top connection lower end and packing glue packer have joint ring respectively between the upper end.
The bottom of above-mentioned thrust link can be fixedly mounted on suspension piston tube top through the connecting rod lock ring, and the top of thrust link can be fixedly mounted on the slips bottom through connecting rod screw; The suspended tubes axle journal is arranged at the top of suspension piston tube; The upper outside of suspended tubes axle journal has the suspended tubes upper groove; There is screw thread on the suspended tubes in the outside, bottom of suspended tubes axle journal; The lock ring screw thread is arranged on the inwall of connecting rod lock ring and be fixedly mounted on suspended tubes axle journal outside through screw thread on lock ring screw thread and the suspended tubes, it is inner that the lower end of thrust link is stuck in the suspended tubes upper groove, and the upper inside wall of connecting rod lock ring is pressed on the bottom lateral surface of thrust link; There is the connecting rod draw-in groove in the outside, bottom of slips; The kelly screw is arranged on the bottom surface of connecting rod draw-in groove; There is the connecting rod screw position of the corresponding kelly screw in the top of thrust link, and thrust link top is fixedly mounted on the slips bottom through connecting rod screw, connecting rod screw and kelly screw.
Can there be seal groove in the suspended tubes at the inwall middle part of ring platform in the above-mentioned suspended tubes, and the seal groove internal fixation is equipped with sealing ring in the suspended tubes that keeps sealing between the inwall that can make ring platform in the suspended tubes and the external side of core barrel in the suspended tubes; The outer middle side part of core barrel outer shroud platform can be had the inclination seal of tube groove, and core barrel seal groove internal fixation is equipped with to make and keeps the core barrel sealing ring that seals under the core barrel outer shroud platform outside and the suspended tubes between the cavity wall; Seat envelope external seal groove can be arranged on the lateral surface of seat envelope outer shroud boss, and seat envelope external seal groove internal fixation is equipped with and can makes the seat envelope exterior seal ring that keeps sealing on the seat envelope outer shroud boss outside and the suspended tubes between the cavity wall; On the inwall of the interior ring of seat envelope boss seal groove in the seat envelope can be arranged, the seal groove internal fixation is equipped with to make and keeps the seat of sealing to seal inner seal ring between seat envelope interior ring boss inwall and the external side of core barrel in the envelope.
Can there be the joint chamber inside of above-mentioned top connection; Can have on the upper inside wall in joint chamber can with screw thread on the joint that tie back stem is connected; On the middle part inwall in joint chamber the up big and down small joint conical surface can be arranged; Screw thread under the joint is arranged on the lower inner wall in joint chamber, the outside, the upper end of core barrel body have with joint under screw thread on the core barrel of threads engaged, top connection is fixedly mounted on core barrel body top through screw thread on screw thread under the joint and the core barrel.
The outside, core barrel body bottom of above-mentioned suspension piston tube below can be equipped with centralizer, and the outside of centralizer is evenly distributed with along circumference and sets upright boss.
The utility model reasonable and compact in structure; Easy to use; It builds the pressure after in the running tool lower going-into-well, make the suspension piston tube cut off the suspension shear pin and on move, promote slips through the suspension piston tube and realize suspension; Continue to build the pressure make a seat envelope piston tube cut off an envelope shear pin and on move; Through pushing away on the seat envelope piston tube and compressing the plug separating device and realize the seat envelope, one time two-stage pressure can be accomplished hydraulic suspension, hydraulic base sealed, has that volume is less, simple in structure, cost is lower, the characteristics of simple and effective.
Description of drawings
Accompanying drawing 1 is looked the sectional structure sketch map for the master of the utility model most preferred embodiment.
Accompanying drawing 2 partly cuts open the structure for amplifying sketch map for the seat envelope piston tube in the accompanying drawing 1.
Coding in the accompanying drawing is respectively: 1 is top connection, and 2 is the core barrel body, and 3 is the core barrel chamber, and 4 is screw thread under the core barrel, and 5 are the suspension piston tube, and 6 are the suspension shear pin; 7 is thrust link, and 8 is slips, and 9 is the rectangle voussoir, and 10 are the suspension draw-in groove, and 11 for encircling platform in the suspended tubes, and 12 for encircling platform under the suspended tubes; 13 are the suspension screw, and 14 is core barrel outer shroud platform, and 15 are the suspension plunger shaft, and 16 are the suspension pressure transmission hole, and 17 is latch, and 18 is the voussoir conical surface; 19 is seat envelope piston tube, and 20 is seat envelope shear pin, and 21 is seat envelope draw-in groove, and 22 is seat envelope screw, and 23 is seat envelope outer shroud boss, and 24 is ring boss in the seat envelope; 25 is seat envelope plunger shaft, and 26 is seat envelope pressure transmission hole, and 27 is rectangular through-hole, and 28 are packing glue packer, and 29 is joint ring; 30 is the connecting rod lock ring, and 31 is connecting rod screw, and 32 is the suspended tubes axle journal, and 33 is the suspended tubes upper groove, and 34 is the connecting rod draw-in groove; 35 is seal groove in the suspended tubes, and 36 is the core barrel seal groove, and 37 is seat envelope external seal groove, and 38 is seal groove in the seat envelope, and 39 is the joint chamber; 40 is screw thread on the joint, and 41 is the joint conical surface, and 42 is screw thread under the joint, and 43 is centralizer, and 44 for setting upright boss.
The specific embodiment
The utility model does not receive the restriction of following embodiment, can confirm concrete embodiment according to the technical scheme and the actual conditions of the utility model.
In the utility model, for the ease of describing, the description of the relative position relation of each parts all is to describe according to the Butut mode of Figure of description, as: upper and lower, about etc. the position relation be what to confirm according to the Butut direction of Figure of description.
Below in conjunction with most preferred embodiment and accompanying drawing the utility model is further described:
Shown in accompanying drawing 1, the special-purpose tail tube hanging packing of this shallow water horizontal well assembly comprises top connection 1, core barrel body 2, plug separating device, seat seal apparatus and suspension arrangement; Tube chamber 3 is had the inclination in the inside of core barrel body 2; The top of core barrel body 2 is installed with top connection 1; The outside, the bottom of core barrel body 2 have can with screw thread 4 under the core barrel that bunch tube is connected; The upper outside of core barrel body 2 is equipped with the plug separating device, can be clamped on after core barrel body 2 outsides of plug separating device below are equipped with and build the pressure on the cannula cavity wall suspension arrangement with continue to build the pressure after can compress the plug separating device and make it intercept the seat seal apparatus of cannula cavity.After in the running tool lower going-into-well, build the pressure; Make the action of a seal apparatus and suspension arrangement, one time two-stage pressure can be accomplished hydraulic suspension, hydraulic base sealed, and is not only simple in structure, volume is little; Be convenient to make and safeguard, and good reliability, easy to use, operating efficiency is higher.
Can according to actual needs the special-purpose tail tube hanging packing of above-mentioned shallow water horizontal well assembly be done further to optimize or/and improve:
Shown in accompanying drawing 1, suspension arrangement comprises suspension piston tube 5, suspension shear pin 6, thrust link 7, be no less than two and the slips 8 and the rectangle voussoir 9 that are symmetrically distributed; There is suspension draw-in groove 10 in the outside, bottom of core barrel body 2; Ring platform 11 in the suspended tubes is arranged on the middle part inwall of suspension piston tube 5; On suspension piston tube 5 lower inner wall of corresponding suspension draw-in groove 10 positions ring platform 12 under the suspended tubes is arranged; The inner wall sleeve of suspension piston tube 5 through ring platform 11 in inwall and the suspended tubes of ring platform 12 under the suspended tubes is contained in the outside, core barrel body 2 bottoms and also can slides up and down; The inner chamber that ring platform 11 will hang piston tube 5 in the suspended tubes is separated into suspended tubes epicoele and suspended tubes cavity of resorption; Outside suspension piston tube 5 bottoms of ring platform 12 medium positions the suspension screw 13 that radially runs through ring platform 12 under suspension piston tube 5 and the suspended tubes is arranged under the corresponding suspended tubes, suspension piston tube 5 is fixedly mounted on core barrel body 2 outsides through hanging shear pin 6, suspension screw 13 and hanging draw-in groove 10, and the inner of suspension shear pin 6 is pressed on the groove bottom of suspension draw-in groove 10; There is core barrel outer shroud platform 14 in core barrel body 2 outsides of corresponding suspended tubes cavity of resorption upper position; The lateral surface of core barrel outer shroud platform 14 matches with the inwall of suspended tubes cavity of resorption, and the suspended tubes cavity of resorption of core barrel outer shroud platform 14 tops forms suspension plunger shaft 15, on the core barrel body 2 of corresponding suspension plunger shaft 15 lower positions suspension pressure transmission hole 16 is arranged; The inner of suspension pressure transmission hole 16 is connected with core barrel chamber 3, and the outer end of suspension pressure transmission hole 16 is connected with suspension plunger shaft 15; The top of suspension piston tube 5 is installed with slips 8 through thrust link 7, and the up big and down small card conical surface is arranged at the medial surface top of slips 8, is distributed with latch 17 on the lateral surface of slips 8; Core barrel body 2 upper outside of corresponding card conical surface position are fixed with rectangle voussoir 9, the voussoir conical surface 18 of the lateral surface of rectangle voussoir 9 for matching with the card conical surface.Through building the pressure; Core barrel chamber 3 pressure inside liquid can get into suspension plunger shaft 15 from suspension pressure transmission hole 16; After the thrust of pressure fluid generation makes suspension piston tube 5 cut off suspension shear pin 6; The suspension piston tube 5 that promotes pressure fluid is moved on continuing, and suspension piston tube 5 drives slips 8 along moving on the voussoir conical surface 18 of rectangle voussoir 9 through thrust link 7, and slips 8 upper ends are opened and are fixed on the internal surface of sleeve pipe through latch 17.
Like accompanying drawing 1, shown in 2, the seat seal apparatus comprises seat envelope piston tube 19 and seat envelope shear pin 20; Seat envelope piston tube 19 is sleeved on the upper outside of core barrel body 2; Core barrel body 2 outer upper of plug separating device below have seat envelope draw-in groove 21; There is the seat envelope screw 22 that radially runs through seat envelope piston tube 19 in seat envelope piston tube 19 outsides of respective seat envelope draw-in groove 21 positions; Seat envelope piston tube 19 is fixedly mounted on core barrel body 2 outsides through seat envelope shear pin 20, seat envelope screw 22 and seat envelope draw-in groove 21, and the inner of seat envelope shear pin 20 compresses on the groove bottom of present envelope draw-in groove 21; The upper surface of seat envelope piston tube 19 is pressed on the lower surface of plug separating device; Form seat envelope annular space on core barrel body 2 lateral surfaces and the suspended tubes between the cavity wall; The seat envelope outer shroud boss 23 that the outside, bottom of seat envelope piston tube 19 has external diameter to match with suspended tubes epicoele internal diameter; The interior ring of the seat envelope boss 24 that the inwall bottom of seat envelope piston tube 19 has internal diameter to match with core barrel body 2 lateral surfaces; It is inner and can move up and down that seat envelope piston tube 19 is installed present envelope annular space through a ring boss 24 in seat envelope outer shroud boss 23 and the seat envelope, and the seat envelope annular space of seat envelope piston tube 19 belows forms a seat envelope plunger shaft 25, on the core barrel body 2 of respective seat envelope plunger shaft 25 upper positions a seat envelope pressure transmission hole 26 is arranged; The inner of seat envelope pressure transmission hole 26 is connected with core barrel chamber 3, and the outer end of seat envelope pressure transmission hole 26 is connected with seat envelope plunger shaft 25; On the seat envelope piston tube 19 of each rectangle voussoir 9 position of correspondence the rectangular through-hole 27 of length dimension greater than rectangle voussoir 9 length dimensions arranged respectively, seat envelope piston tube 19 is sleeved on rectangle voussoir 9 outsides and can seals piston tube 19 axis directions along seat through rectangular through-hole 27 and moves up and down.Build the pressure through continuing; Core barrel chamber 3 pressure inside liquid can seal pressure transmission hole 26 from seat and get into seat envelope plunger shaft 25; After the thrust of pressure fluid generation makes a seat envelope piston tube 19 cut off an envelope shear pin 20; Pressure fluid promotes to move in 19 continuation of seat envelope piston tube, and seat envelope piston tube 19 upper ends extruding plug separating device increases its radial dimension and the realization cannula cavity intercepts.
Shown in accompanying drawing 1, the plug separating device comprises the packing glue packer 28 and joint ring 29 that is no less than two, between adjacent two packing glue packers 28, between top connection 1 lower end and packing glue packer 28 upper ends joint ring 29 is arranged respectively.Joint ring 29 materials are preferably red copper, to improve its functional reliability.
Shown in accompanying drawing 1, the bottom of thrust link 7 is fixedly mounted on suspension piston tube 5 tops through connecting rod lock ring 30, and the top of thrust link 7 is fixedly mounted on slips 8 bottoms through connecting rod screw 31; Suspended tubes axle journal 32 is arranged at the top of suspension piston tube 5; The upper outside of suspended tubes axle journal 32 has suspended tubes upper groove 33; There is screw thread on the suspended tubes in the outside, bottom of suspended tubes axle journal 32; The lock ring screw thread is arranged on the inwall of connecting rod lock ring 30 and be fixedly mounted on suspended tubes axle journal 32 outsides through screw thread on lock ring screw thread and the suspended tubes, the lower end of thrust link 7 is stuck in suspended tubes upper groove 33 inside, and the upper inside wall of connecting rod lock ring 30 is pressed on the bottom lateral surface of thrust link 7; There is connecting rod draw-in groove 34 in the outside, bottom of slips 8; The kelly screw is arranged on the bottom surface of connecting rod draw-in groove 34; There is the connecting rod screw position of the corresponding kelly screw in the top of thrust link 7, and thrust link 7 tops are fixedly mounted on slips 8 bottoms through connecting rod screw 31, connecting rod screw and kelly screw.Be fixedly connected thrust link 7 through connecting rod lock ring 30 with connecting rod screw 31, not only connect reliably, and be convenient to assembly and disassembly.
Like accompanying drawing 1, shown in 2, there is seal groove 35 in the suspended tubes at the inwall middle part of ring platform 11 in the suspended tubes, and seal groove 35 internal fixation are equipped with sealing ring in the suspended tubes that keeps sealing between the inwall that can make ring platform 11 in the suspended tubes and core barrel body 2 outsides in the suspended tubes; The outer middle side part of core barrel outer shroud platform 14 is had the inclination seal of tube groove 36, and core barrel seal groove 36 internal fixation are equipped with and can make the core barrel sealing ring that keeps sealing under core barrel outer shroud platform 14 outsides and the suspended tubes between the cavity wall; Seat envelope external seal groove 37 is arranged on the lateral surface of seat envelope outer shroud boss 23, and seat envelope external seal groove 37 internal fixation are equipped with and can make the seat envelope exterior seal ring that keeps sealing on seat envelope outer shroud boss 23 outsides and the suspended tubes between the cavity wall; On the inwall of the interior ring of seat envelope boss 24 seal groove 38 in the seat envelope is arranged, seal groove 38 internal fixation are equipped with to make and keep the seat of sealing to seal inner seal ring between seat envelope interior ring boss 24 inwalls and core barrel body 2 outsides in the envelope.Sealing ring can further improve the sealing performance of junction.
Shown in accompanying drawing 1; There is joint chamber 39 inside of top connection 1; Have on the upper inside wall in joint chamber 39 can with screw thread 40 on the joint that tie back stem is connected, the up big and down small joint conical surface 41 is arranged on the middle part inwall in joint chamber 39, screw thread 42 under the joint is arranged on the lower inner wall in joint chamber 39; The outside, the upper end of core barrel body 2 have with joint under screw thread on the core barrel that matches of screw thread 42, top connection 1 is fixedly mounted on core barrel body 2 tops through screw thread on screw thread under the joint 42 and the core barrel.
Shown in accompanying drawing 1, the outside, core barrel body 2 bottoms of suspension piston tube 5 belows is equipped with centralizer 43, and the outside of centralizer 43 is evenly distributed with along circumference and sets upright boss 44.Centralizer 43 can be protected suspension piston tube 5, seat envelope piston tube 19 and slips 8 when playing centralizing function.
Above technical characterictic has constituted the most preferred embodiment of the utility model, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.
The course of work of the utility model most preferred embodiment is: at first; After the upper strata casing cementing finishes; The utility model is fixedly connected on the upper end of sleeve pipe tail pipe string; With supporting running tool the utility model and sleeve pipe tail pipe string are delivered to the design well depth, guarantee that the utility model is positioned at the upper strata sleeve pipe; Secondly, through running tool seat envelope pressure transmission hole 26 and suspension pressure transmission hole 16 positions are built the pressure, when pressure reaches the shear pressure value of suspension shear pin 6; Suspension shear pin 6 is cut off, and moves on the force suspension piston tube 5, and it is up with slips 8 to promote thrust link 7 when moving on the suspension piston tube 5; Owing on the inwall of slips 8 the card conical surface that matches with the voussoir conical surface 18 in rectangle voussoir 9 outsides is arranged; When slips 8 is up, then outwards magnify, and then be engaged on the inwall of upper strata sleeve pipe, transfer the tail pipe string afterwards along the taper angle of the voussoir conical surface 18; Make latch 17 wedging upper strata internal surface of sleeve pipe, thereby accomplish suspension; Then; Continue to build the pressure and cut off until seat envelope shear pin 20; Then seat envelope piston tube 19 push away on the pressure fluid under the effect up; Because rectangular through-hole 27 is arranged at seat envelope piston tube 19 tops, do not receive stopping of rectangle voussoir 9 when then moving on the seat envelope piston tube 19, move on a seat envelope piston tube 19 compression packing glue packers 28 continued and on push away joint ring 29; At last, external diameter increases under the crimp of packing glue packer 28 present envelope piston tube 19, makes the annular space between core barrel body 2 and the upper strata internal surface of sleeve pipe realize separating, the final seat envelope of accomplishing.
Claims (10)
1. the special-purpose tail tube hanging packing of a shallow water horizontal well assembly is characterized in that comprising top connection, core barrel body, plug separating device, seat seal apparatus and suspension arrangement; Tube chamber is had the inclination in the inside of core barrel body; The top of core barrel body is installed with top connection; The outside, the bottom of core barrel body have can with screw thread under the core barrel that bunch tube is connected; The upper outside of core barrel body is equipped with the plug separating device, can be clamped on after the core barrel external of plug separating device below is equipped with and builds the pressure on the cannula cavity wall suspension arrangement with continue to build the pressure after can compress the plug separating device and make it intercept the seat seal apparatus of cannula cavity.
2. the special-purpose tail tube hanging packing of shallow water horizontal well according to claim 1 assembly is characterized in that suspension arrangement comprises suspension piston tube, suspension shear pin, thrust link, is no less than two and the slips and the rectangle voussoir that are symmetrically distributed; There is the suspension draw-in groove in the outside, bottom of core barrel body; Have on the middle part inwall of suspension piston tube and encircle platform in the suspended tubes; Have under the suspended tubes on the suspension piston tube lower inner wall of corresponding suspension draw-in groove position and encircle platform; The inner wall sleeve of suspension piston tube through ring platform in inwall and the suspended tubes of ring platform under the suspended tubes is contained in the outside, core barrel body bottom and can slides up and down, and the inner chamber that the ring platform will hang piston tube in the suspended tubes is separated into suspended tubes epicoele and suspended tubes cavity of resorption, has radially to run through outside the suspension piston tube bottom of ring platform medium position under the corresponding suspended tubes and hangs the suspension screw that encircles platform under piston tube and the suspended tubes; The suspension piston tube is fixedly mounted on the core barrel external through suspension shear pin, suspension screw and suspension draw-in groove; The inner of suspension shear pin is pressed on the groove bottom of suspension draw-in groove, and the external side of core barrel of corresponding suspended tubes cavity of resorption upper position has core barrel outer shroud platform, and the lateral surface of core barrel outer shroud platform matches with the inwall of suspended tubes cavity of resorption; The suspended tubes cavity of resorption of core barrel outer shroud platform top forms the suspension plunger shaft; On the core barrel body of corresponding suspension plunger shaft lower position the suspension pressure transmission hole is arranged, the inner of suspension pressure transmission hole is connected with the core barrel chamber, and the outer end of suspension pressure transmission hole is connected with the suspension plunger shaft; The top of suspension piston tube is installed with slips through thrust link, and the up big and down small card conical surface is arranged at the medial surface top of slips, is distributed with latch on the lateral surface of slips; The core barrel body upper outside of corresponding card conical surface position is fixed with the rectangle voussoir, the voussoir conical surface of the lateral surface of rectangle voussoir for matching with the card conical surface.
3. the special-purpose tail tube hanging packing of shallow water horizontal well according to claim 2 assembly is characterized in that a seal apparatus comprises seat envelope piston tube and seat envelope shear pin; Seat envelope piston tube is sleeved on the upper outside of core barrel body; The external upper lateral part of core barrel of plug separating device below has seat envelope draw-in groove; There is the seat envelope screw that radially runs through seat envelope piston tube in the seat envelope piston tube outside of respective seat envelope draw-in groove position; Seat envelope piston tube is sealed shear pin, seat envelope screw and seat envelope draw-in groove through seat and is fixedly mounted on the core barrel external, and the inner of seat envelope shear pin compresses on the groove bottom of present envelope draw-in groove; The upper surface of seat envelope piston tube is pressed on the lower surface of plug separating device; Form seat envelope annular space on external side of core barrel and the suspended tubes between the cavity wall; The seat envelope outer shroud boss that the outside, bottom of seat envelope piston tube has external diameter to match with suspended tubes epicoele internal diameter; The interior ring of the seat envelope boss that the inwall bottom of seat envelope piston tube has the external side of internal diameter and core barrel to match; It is inner and can move up and down that seat envelope piston tube is installed present envelope annular space through a ring boss in seat envelope outer shroud boss and the seat envelope, and the seat envelope annular space of seat envelope piston tube below forms a seat envelope plunger shaft, on the core barrel body of respective seat envelope plunger shaft upper position a seat envelope pressure transmission hole is arranged; The inner of seat envelope pressure transmission hole is connected with the core barrel chamber, and the outer end of seat envelope pressure transmission hole is connected with seat envelope plunger shaft; On the seat envelope piston tube of each rectangle voussoir position of correspondence the rectangular through-hole of length dimension greater than rectangular wedge block length size arranged respectively, seat envelope piston tube is sleeved on rectangle voussoir outside and can seals the piston tube axis direction along seat through rectangular through-hole and moves up and down.
4. according to claim 1 or the special-purpose tail tube hanging packing of 2 or 3 described shallow water horizontal wells assembly; It is characterized in that the plug separating device comprises packing glue packer and the joint ring that is no less than two, between adjacent two packing glue packers, top connection lower end and packing glue packer have joint ring respectively between the upper end.
5. according to claim 2 or the special-purpose tail tube hanging packing of 3 described shallow water horizontal wells assembly; The bottom that it is characterized in that thrust link is fixedly mounted on suspension piston tube top through the connecting rod lock ring, and the top of thrust link is fixedly mounted on the slips bottom through connecting rod screw; The suspended tubes axle journal is arranged at the top of suspension piston tube; The upper outside of suspended tubes axle journal has the suspended tubes upper groove; There is screw thread on the suspended tubes in the outside, bottom of suspended tubes axle journal; The lock ring screw thread is arranged on the inwall of connecting rod lock ring and be fixedly mounted on suspended tubes axle journal outside through screw thread on lock ring screw thread and the suspended tubes, it is inner that the lower end of thrust link is stuck in the suspended tubes upper groove, and the upper inside wall of connecting rod lock ring is pressed on the bottom lateral surface of thrust link; There is the connecting rod draw-in groove in the outside, bottom of slips; The kelly screw is arranged on the bottom surface of connecting rod draw-in groove; There is the connecting rod screw position of the corresponding kelly screw in the top of thrust link, and thrust link top is fixedly mounted on the slips bottom through connecting rod screw, connecting rod screw and kelly screw.
6. the special-purpose tail tube hanging packing of shallow water horizontal well according to claim 4 assembly is characterized in that the bottom of thrust link is fixedly mounted on suspension piston tube top through the connecting rod lock ring, and the top of thrust link is fixedly mounted on the slips bottom through connecting rod screw; The suspended tubes axle journal is arranged at the top of suspension piston tube; The upper outside of suspended tubes axle journal has the suspended tubes upper groove; There is screw thread on the suspended tubes in the outside, bottom of suspended tubes axle journal; The lock ring screw thread is arranged on the inwall of connecting rod lock ring and be fixedly mounted on suspended tubes axle journal outside through screw thread on lock ring screw thread and the suspended tubes, it is inner that the lower end of thrust link is stuck in the suspended tubes upper groove, and the upper inside wall of connecting rod lock ring is pressed on the bottom lateral surface of thrust link; There is the connecting rod draw-in groove in the outside, bottom of slips; The kelly screw is arranged on the bottom surface of connecting rod draw-in groove; There is the connecting rod screw position of the corresponding kelly screw in the top of thrust link, and thrust link top is fixedly mounted on the slips bottom through connecting rod screw, connecting rod screw and kelly screw.
7. the special-purpose tail tube hanging packing of shallow water horizontal well according to claim 5 assembly; There is seal groove in the suspended tubes at the inwall middle part that it is characterized in that in the suspended tubes ring platform, and the seal groove internal fixation is equipped with sealing ring in the suspended tubes that keeps sealing between the inwall that can make ring platform in the suspended tubes and the external side of core barrel in the suspended tubes; The outer middle side part of core barrel outer shroud platform is had the inclination seal of tube groove, and core barrel seal groove internal fixation is equipped with to make and keeps the core barrel sealing ring that seals under the core barrel outer shroud platform outside and the suspended tubes between the cavity wall; Seat envelope external seal groove is arranged on the lateral surface of seat envelope outer shroud boss, and seat envelope external seal groove internal fixation is equipped with and can makes the seat envelope exterior seal ring that keeps sealing on the seat envelope outer shroud boss outside and the suspended tubes between the cavity wall; On the inwall of the interior ring of seat envelope boss seal groove in the seat envelope is arranged, the seal groove internal fixation is equipped with and can makes an envelope inner seal ring that keeps sealing between the seat envelope interior ring boss inwall and core barrel body (2) outside in the envelope.
8. the special-purpose tail tube hanging packing of shallow water horizontal well according to claim 6 assembly; There is seal groove in the suspended tubes at the inwall middle part that it is characterized in that in the suspended tubes ring platform, and the seal groove internal fixation is equipped with sealing ring in the suspended tubes that keeps sealing between the inwall that can make ring platform in the suspended tubes and the external side of core barrel in the suspended tubes; The outer middle side part of core barrel outer shroud platform is had the inclination seal of tube groove, and core barrel seal groove internal fixation is equipped with to make and keeps the core barrel sealing ring that seals under the core barrel outer shroud platform outside and the suspended tubes between the cavity wall; Seat envelope external seal groove is arranged on the lateral surface of seat envelope outer shroud boss, and seat envelope external seal groove internal fixation is equipped with and can makes the seat envelope exterior seal ring that keeps sealing on the seat envelope outer shroud boss outside and the suspended tubes between the cavity wall; On the inwall of the interior ring of seat envelope boss seal groove in the seat envelope is arranged, the seal groove internal fixation is equipped with and can makes an envelope inner seal ring that keeps sealing between the seat envelope interior ring boss inwall and core barrel body (2) outside in the envelope.
9. the special-purpose tail tube hanging packing of shallow water horizontal well according to claim 8 assembly; There is the joint chamber inside that it is characterized in that top connection; Have on the upper inside wall in joint chamber can with screw thread on the joint that tie back stem is connected; The up big and down small joint conical surface is arranged on the middle part inwall in joint chamber; Screw thread under the joint is arranged on the lower inner wall in joint chamber, the outside, the upper end of core barrel body have with joint under screw thread on the core barrel of threads engaged, top connection is fixedly mounted on core barrel body top through screw thread on screw thread under the joint and the core barrel.
10. the special-purpose tail tube hanging packing of shallow water horizontal well according to claim 9 assembly is characterized in that the outside, core barrel body bottom that hangs the piston tube below is equipped with centralizer, and the outside of centralizer is evenly distributed with along circumference and sets upright boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120270065 CN202249924U (en) | 2011-07-28 | 2011-07-28 | Tail pipe suspending packing assembly special for shallow horizontal well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120270065 CN202249924U (en) | 2011-07-28 | 2011-07-28 | Tail pipe suspending packing assembly special for shallow horizontal well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202249924U true CN202249924U (en) | 2012-05-30 |
Family
ID=46111183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120270065 Withdrawn - After Issue CN202249924U (en) | 2011-07-28 | 2011-07-28 | Tail pipe suspending packing assembly special for shallow horizontal well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202249924U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102268974A (en) * | 2011-07-28 | 2011-12-07 | 中国石油集团西部钻探工程有限公司 | Special tail pipe hanging packing assembly for shallow horizontal well |
-
2011
- 2011-07-28 CN CN 201120270065 patent/CN202249924U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102268974A (en) * | 2011-07-28 | 2011-12-07 | 中国石油集团西部钻探工程有限公司 | Special tail pipe hanging packing assembly for shallow horizontal well |
| CN102268974B (en) * | 2011-07-28 | 2013-06-19 | 中国石油集团西部钻探工程有限公司 | Special tail pipe hanging packing assembly for shallow horizontal well |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120530 Effective date of abandoning: 20130619 |
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| RGAV | Abandon patent right to avoid regrant |