CN102268974A - Special tail pipe hanging packing assembly for shallow horizontal well - Google Patents
Special tail pipe hanging packing assembly for shallow horizontal well Download PDFInfo
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- CN102268974A CN102268974A CN2011102129297A CN201110212929A CN102268974A CN 102268974 A CN102268974 A CN 102268974A CN 2011102129297 A CN2011102129297 A CN 2011102129297A CN 201110212929 A CN201110212929 A CN 201110212929A CN 102268974 A CN102268974 A CN 102268974A
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Abstract
The invention relates to the technical field of tail pipe hanging devices used in a shallow horizontal well in oil production, and discloses a special tail pipe hanging packing assembly for a shallow horizontal well. The special tail pipe hanging packing assembly for a shallow horizontal well comprises an upper joint, a core pipe body, a rubber plug separation device, a seat seal device and a hanging device, wherein a core pipe cavity is arranged in the core pipe body; the upper joint is fixedly mounted on the upper part of the core pipe body; and a core pipe lower thread which can be connected with a sleeve string is arranged on the outer side of the lower part of the core pipe body. The special tail pipe hanging packing assembly for a shallow horizontal well disclosed by the invention has a reasonable and compact structure, is convenient to use, and builds a pressure after being delivered into the well by a delivery tool so that the hanging piston pipe shears off the hanging shear pin and moves upwards; the hanging piston pipe pushes the slip to realize hanging; the pressure building is continued so that the seat seal piston pipe shears off the seat seal shear pin and moves upwards; the seat seal piston pipe pushes upwards and compresses the rubber plug separation device to realize seat sealing; and hydraulic hanging and hydraulic seat sealing can be finished by once two-level pressure. The special tail pipe hanging packing assembly for a shallow horizontal well has the characteristics of relatively small volume, simple structure, relatively low cost, simplicity and high efficiency.
Description
Technical field
The present invention 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, at horizontal well, especially shallow well, because the hole angle major part of hanger place well section is all more than 70 degree, the tail pipe string is in level substantially, hanger itself only bears minimum axial load when therefore hanging, the conventional tail pipe hanger is common to multiple well depth, multiple well type, usually structure is comparatively complicated, 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 invention provides the special-purpose tail tube hanging packing of a kind of shallow water horizontal well assembly, 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.
Technical scheme of the present invention realizes by 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 the suspension arrangement on the cannula cavity wall after the core barrel external body of plug separating device below is equipped with and builds the pressure and continue to build the pressure after can compress the plug separating device and make it intercept the seat seal apparatus of cannula cavity.
Be further optimization and/or improvements below to the foregoing invention technical scheme:
Above-mentioned suspension arrangement can comprise and hangs piston tube, hangs 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, hang piston tube by ring platform under the suspended tubes inwall and suspended tubes in the inner wall sleeve of ring platform be contained in the outside, core barrel body bottom and can slide up and down, 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, there is the suspension screw that radially runs through ring platform under suspension piston tube and the suspended tubes in the outside, suspension piston tube bottom of ring platform medium position under the corresponding suspended tubes, hang piston tube by hanging shear pin, hang screw and hang draw-in groove and be fixedly mounted on the core barrel external body, the inner that hangs shear pin is pressed on the groove bottom that hangs draw-in groove, the external side of core barrel of corresponding suspended tubes cavity of resorption upper position has core barrel outer shroud platform, 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 and hangs plunger shaft, on the core barrel body of corresponding suspension plunger shaft lower position the suspension pressure transmission hole is arranged, the inner that hangs pressure transmission hole is connected with the core barrel chamber, and the outer end that hangs pressure transmission hole is connected with the suspension plunger shaft; The top that hangs piston tube is installed with slips by 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 by seat and is fixedly mounted on the core barrel external body, 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 seal ring sky 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 empty inner and can move up and down that seat envelope piston tube is installed present seal ring by a ring boss in seat envelope outer shroud boss and the seat envelope, the empty seat envelope plunger shaft that forms of the seat seal ring of seat envelope piston tube below, on the core barrel body of respective seat envelope plunger shaft upper position 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 by 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 by the connecting rod lock ring and hang piston tube top, and the top of thrust link can be fixedly mounted on the slips bottom by connecting rod screw; The suspended tubes axle journal is arranged at the top that hangs 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 by screw thread on lock ring screw thread and the suspended tubes, the lower end of thrust link is stuck in suspended tubes upper groove inside, 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 by 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 and can makes an envelope inner seal ring that keeps sealing between the seat envelope interior ring boss inwall and the outside, core barrel body 2 outsides 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 the tie back stem string 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 by 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.
Reasonable and compact in structure of the present invention, easy to use, it builds the pressure after in the running tool lower going-into-well, make hang piston tube cut off hang shear pin and on move, promote slips and realize hanging by hanging piston tube, continue to build the pressure make a seat envelope piston tube cut off an envelope shear pin and on move, by 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 finished 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 schematic diagram for the master of most preferred embodiment of the present invention.
Accompanying drawing 2 partly cuts open the structure for amplifying schematic diagram 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, 4 is screw thread under the core barrel, and 5 for hanging piston tube, and 6 for hanging shear pin, 7 is thrust link, and 8 is slips, and 9 is the rectangle voussoir, 10 for hanging draw-in groove, and 11 for encircling platform in the suspended tubes, and 12 for encircling platform under the suspended tubes, 13 for hanging screw, 14 is core barrel outer shroud platform, and 15 for hanging plunger shaft, and 16 for hanging pressure transmission hole, 17 is latch, 18 is the voussoir conical surface, and 19 is seat envelope piston tube, and 20 is seat envelope shear pin, 21 is seat envelope draw-in groove, 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, 26 is seat envelope pressure transmission hole, and 27 is rectangular through-hole, and 28 are packing glue packer, 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, 33 is the suspended tubes upper groove, 34 is the connecting rod draw-in groove, and 35 is seal groove in the suspended tubes, and 36 is the core barrel seal groove, 37 is seat envelope external seal groove, 38 is seal groove in the seat envelope, and 39 is the joint chamber, and 40 is screw thread on the joint, 41 is the joint conical surface, 42 is screw thread under the joint, and 43 is centralizer, and 44 for setting upright boss.
The specific embodiment
The present invention is not subjected to the restriction of following embodiment, can determine concrete embodiment according to technical scheme of the present invention and actual conditions.
In the present invention, for convenience of description, the description of the relative position relation of each parts all is that the Butut mode according to Figure of description is described, as: upper and lower, about etc. the position relation be what to determine according to the Butut direction of Figure of description.
Below in conjunction with most preferred embodiment and accompanying drawing the present invention is further described:
As shown in Figure 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 the suspension arrangement on the cannula cavity wall after core barrel body 2 outsides of plug separating device below are equipped with and build the pressure and 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 finished 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 made further optimization and/or improvements:
As shown in Figure 1, suspension arrangement comprises and hangs piston tube 5, hangs shear pin 6, thrust link 7, is no less than two and the slips 8 and the rectangle voussoir 9 that are symmetrically distributed; There is the draw-in groove 10 of suspension 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, hang piston tube 5 by ring platform 12 under the suspended tubes inwall and suspended tubes in the inner wall sleeve of ring platform 11 be contained in the outside, core barrel body 2 bottoms and can slide 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, there is the suspension screw 13 that radially runs through ring platform 12 under suspension piston tube 5 and the suspended tubes in the outside, suspension piston tube 5 bottoms of ring platform 12 medium positions under the corresponding suspended tubes, hang piston tube 5 by hanging shear pin 6, hang screw 13 and hang draw-in groove 10 and be fixedly mounted on core barrel body 2 outsides, the inner that hangs shear pin 6 is pressed on the groove bottom that hangs 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, the suspended tubes cavity of resorption of core barrel outer shroud platform 14 tops forms and hangs plunger shaft 15, on the core barrel body 2 of corresponding suspension plunger shaft 15 lower positions the pressure transmission hole 16 of suspension is arranged, the inner that hangs pressure transmission hole 16 is connected with core barrel chamber 3, and the outer end that hangs pressure transmission hole 16 is connected with suspension plunger shaft 15; The top that hangs piston tube 5 is installed with slips 8 by 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.By building the pressure, core barrel chamber 3 pressure inside liquid can enter suspension plunger shaft 15 from hanging pressure transmission hole 16, after the thrust of pressure fluid generation makes suspension piston tube 5 cut off suspension shear pin 6, the piston tube 5 that promotes pressure fluid to hang is moved on continuing, hang piston tube 5 and drive slips 8 along moving on the voussoir conical surface 18 of rectangle voussoir 9 by thrust link 7, slips 8 upper ends are opened and are fixed on the internal surface of sleeve pipe by latch 17.
Shown in accompanying drawing 1,2, 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 by 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 seal ring sky 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 empty inner and can move up and down that seat envelope piston tube 19 is installed present seal ring by a ring boss 24 in seat envelope outer shroud boss 23 and the seat envelope, the empty seat envelope plunger shaft 25 that forms of the seat seal ring of seat envelope piston tube 19 belows, on the core barrel body 2 of respective seat envelope plunger shaft 25 upper positions 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 by rectangular through-hole 27 and moves up and down.Build the pressure by continuing, core barrel chamber 3 pressure inside liquid can seal pressure transmission hole 26 from seat and enter 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, the seat envelope piston tube 19 that promotes pressure fluid is moved on continuing, seat envelope piston tube 19 upper ends extruding plug separating device increases its radial dimension and the realization cannula cavity intercepts.
As shown in Figure 1, the plug separating device comprises packing glue packer 28 and the 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.
As shown in Figure 1, the bottom of thrust link 7 is fixedly mounted on by connecting rod lock ring 30 and hangs piston tube 5 tops, and the top of thrust link 7 is fixedly mounted on slips 8 bottoms by connecting rod screw 31; Suspended tubes axle journal 32 is arranged at the top that hangs 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 by 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 by connecting rod screw 31, connecting rod screw and kelly screw.Fixedly connected thrust link 7 with connecting rod screw 31 by connecting rod lock ring 30, not only connect reliably, and be convenient to assembly and disassembly.
Shown in accompanying drawing 1,2, 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 and can make an envelope inner seal ring that keeps sealing between seat envelope interior ring boss 24 inwalls and the outside, core barrel body 2 outsides in the envelope.Sealing ring can further improve the sealing performance of junction.
As shown in Figure 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 the tie back stem string 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, there is screw thread on the core barrel that matches with screw thread 42 under the joint in the outside, upper end of core barrel body 2, and top connection 1 is fixedly mounted on core barrel body 2 tops by screw thread on screw thread under the joint 42 and the core barrel.
As shown in Figure 1, the outside, core barrel body 2 bottoms that hangs 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 hanging piston tube 5, seat envelope piston tube 19 and slips 8 when playing centralizing function.
Above technical characterictic has constituted most preferred embodiment of the present invention, 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 most preferred embodiment of the present invention is: at first, after the upper strata casing cementing finishes, the present invention is fixedly connected on the upper end of sleeve pipe tail pipe string, the present invention and sleeve pipe tail pipe string is delivered to the design well depth, guarantee that the present invention is positioned at the upper strata sleeve pipe with supporting running tool; Secondly, by 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 that hangs shear pin 6, hanging shear pin 6 is cut off, pressure promotes to hang on the piston tube 5 and moves, promotion thrust link 7 and slips 8 are up 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, then the taper angle along the voussoir conical surface 18 outwards magnifies when slips 8 is up, and then be engaged on the inwall of upper strata sleeve pipe, transfer the tail pipe string afterwards, make latch 17 wedging upper strata internal surface of sleeve pipe, thereby finish 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, be not subjected to stopping of rectangle voussoir 9 when then moving on the seat envelope piston tube 19, move on continue a seat envelope piston tube 19 compression packing glue packers 28 backs 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, and finally finishes the seat envelope.
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 the suspension arrangement on the cannula cavity wall after the core barrel external body of plug separating device below is equipped with and builds the pressure and 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 to hang piston tube, hang 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, hang piston tube by ring platform under the suspended tubes inwall and suspended tubes in the inner wall sleeve of ring platform be contained in the outside, core barrel body bottom and can slide up and down, 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, there is the suspension screw that radially runs through ring platform under suspension piston tube and the suspended tubes in the outside, suspension piston tube bottom of ring platform medium position under the corresponding suspended tubes, hang piston tube by hanging shear pin, hang screw and hang draw-in groove and be fixedly mounted on the core barrel external body, the inner that hangs shear pin is pressed on the groove bottom that hangs draw-in groove, the external side of core barrel of corresponding suspended tubes cavity of resorption upper position has core barrel outer shroud platform, 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 and hangs plunger shaft, on the core barrel body of corresponding suspension plunger shaft lower position the suspension pressure transmission hole is arranged, the inner that hangs pressure transmission hole is connected with the core barrel chamber, and the outer end that hangs pressure transmission hole is connected with the suspension plunger shaft; The top that hangs piston tube is installed with slips by 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 by seat and is fixedly mounted on the core barrel external body, 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 seal ring sky 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 empty inner and can move up and down that seat envelope piston tube is installed present seal ring by a ring boss in seat envelope outer shroud boss and the seat envelope, the empty seat envelope plunger shaft that forms of the seat seal ring of seat envelope piston tube below, on the core barrel body of respective seat envelope plunger shaft upper position 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 by 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 by the connecting rod lock ring, and the top of thrust link is fixedly mounted on the slips bottom by connecting rod screw; The suspended tubes axle journal is arranged at the top that hangs 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 by screw thread on lock ring screw thread and the suspended tubes, the lower end of thrust link is stuck in suspended tubes upper groove inside, 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 by 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 by the connecting rod lock ring, and the top of thrust link is fixedly mounted on the slips bottom by connecting rod screw; The suspended tubes axle journal is arranged at the top that hangs 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 by screw thread on lock ring screw thread and the suspended tubes, the lower end of thrust link is stuck in suspended tubes upper groove inside, 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 by 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 the outside, core barrel body 2 outsides 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 the outside, core barrel body 2 outsides 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 the tie back stem string 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 by 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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110212929 CN102268974B (en) | 2011-07-28 | 2011-07-28 | Special tail pipe hanging packing assembly for shallow horizontal well |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110212929 CN102268974B (en) | 2011-07-28 | 2011-07-28 | Special tail pipe hanging packing assembly for shallow horizontal well |
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| CN102268974A true CN102268974A (en) | 2011-12-07 |
| CN102268974B CN102268974B (en) | 2013-06-19 |
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| CN 201110212929 Active CN102268974B (en) | 2011-07-28 | 2011-07-28 | Special tail pipe hanging packing assembly for shallow horizontal well |
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Cited By (4)
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| CN105507836A (en) * | 2014-09-26 | 2016-04-20 | 中国石油化工股份有限公司 | Drilling liner hanger and string type well cementing system comprising same |
| CN107345478A (en) * | 2016-05-06 | 2017-11-14 | 中国石油化工股份有限公司 | A kind of Bidirectional-squeezing formula packer body |
| CN108060907A (en) * | 2017-12-03 | 2018-05-22 | 中国石油集团渤海钻探工程有限公司 | Single ball-type fluid pressure tailpiece hanger |
| CN108442899A (en) * | 2018-03-16 | 2018-08-24 | 江苏航天鸿鹏数控机械有限公司 | Pass through ground control fluid pressure tailpiece hanger and its control method |
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| CN108442899A (en) * | 2018-03-16 | 2018-08-24 | 江苏航天鸿鹏数控机械有限公司 | Pass through ground control fluid pressure tailpiece hanger and its control method |
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|---|---|
| CN102268974B (en) | 2013-06-19 |
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Effective date of registration: 20200925 Address after: 100120 Beijing Xicheng District six laying Kang Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Xibu Drilling Engineering Co.,Ltd. Address before: 834000 the Xinjiang Uygur Autonomous Region Karamay Hongyan Road No. 80 western drilling engineering technology research institute Patentee before: CNPC Xibu Drilling Engineering Co.,Ltd. |
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