CN111663907A - Heat-preservation type lining underground tubing coupling and installation method thereof - Google Patents
Heat-preservation type lining underground tubing coupling and installation method thereof Download PDFInfo
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- CN111663907A CN111663907A CN202010548420.9A CN202010548420A CN111663907A CN 111663907 A CN111663907 A CN 111663907A CN 202010548420 A CN202010548420 A CN 202010548420A CN 111663907 A CN111663907 A CN 111663907A
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- 230000008878 coupling Effects 0.000 title claims abstract description 32
- 238000010168 coupling process Methods 0.000 title claims abstract description 32
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 32
- 238000004321 preservation Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000009434 installation Methods 0.000 title claims description 14
- 238000007789 sealing Methods 0.000 claims abstract description 29
- 238000003780 insertion Methods 0.000 claims description 9
- 230000037431 insertion Effects 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 238000010030 laminating Methods 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 claims 1
- 239000003129 oil well Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention discloses a heat-preservation type lining downhole oil pipe coupling and a mounting method thereof in the technical field, which comprises an oil pipe hoop body, wherein a plurality of sliding grooves are arranged on the surface of the oil pipe hoop body, a plurality of sliding blocks are arranged in the sliding grooves in a sliding manner, a separable sliding female sleeve is arranged on one side of each sliding block, a separable sliding sub-sleeve is arranged in the separable sliding female sleeve in a sliding manner, one end of the separable sliding sub-sleeve is connected with a first spring in a fitting manner, rotary sleeves are arranged on two sides in the oil pipe hoop body in a sliding manner, a first triangular block is jacked up by a second spring during disassembly, so that a limiting clamping plate is driven by a second square sliding rod to be separated from a mounting clamping groove, a third triangular block is jacked up by a third spring, the first square sliding rod drives an inflatable movable block to reset and slide, air on the inner side of a rubber sealing ring belt is pumped, the first oil pipe and the second oil pipe can be conveniently disassembled.
Description
Technical Field
The invention relates to the technical field of tubing coupling, in particular to a heat-preservation type lining downhole tubing coupling and an installation method thereof.
Background
The tubing coupling is one kind of oil well drilling tool and is used mainly in connecting oil pipe. The tubing coupling mainly solves the problem that the existing coupling is easily tired and broken due to stress concentration. The oil pipe coupling structure is as follows: the end of the oil pipe is connected with the inner wall of the coupling body in a tapered thread mode, and the end of the coupling body is connected with the oil pipe in a flat thread mode with the same thread pitch. The connecting device has the characteristic of relieving stress concentration at the root part of the external thread of the single-cone threaded connecting oil pipe, is not easy to generate fatigue fracture, and has good connecting effect. Effectively preventing the oil well pipe column from breaking off.
The oil pipe coupling is a mechanical part for connecting oil pipes in oil development and is mainly used for connecting the oil pipes. The tubing coupling plays a role in connecting tubing, bearing tensile force, lifting the tubing, sealing tubing screw threads and the like, the existing tubing coupling is not stable enough in connection and is easy to loosen in long-time use, so that connection of the tubing is affected, meanwhile, the sealing performance of the existing tubing coupling is poor, the situation of oil leakage is often caused in long-time use, and the requirement of people is difficult to meet.
Disclosure of Invention
The invention aims to provide a heat-preservation type lining underground tubing coupling and an installation method thereof, and aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a heat-preservation type underground tubing coupling with a lining comprises a tubing anchor ear body, wherein a plurality of sliding grooves are formed in the surface of the tubing anchor ear body, a plurality of sliding blocks are arranged inside the sliding grooves in a sliding mode, a separable sliding female sleeve is arranged on one side of each sliding block, a separable sliding sub-sleeve is arranged inside the separable sliding female sleeve in a sliding mode, one end of each separable sliding sub-sleeve is provided with a first spring in a joint mode, two sides inside the tubing anchor ear body are provided with rotating sleeves in a sliding mode, a plurality of second triangular blocks are fixedly arranged on the inner side surface of each rotating sleeve, a fourth triangular block is fixedly arranged on one side surface of each second triangular block, a plurality of first limiting blocks are fixedly arranged on the inner side surface of each rotating sleeve, a plurality of sliding sleeves are fixedly arranged on the inner surface of the tubing anchor ear body, a limiting clamping plate is slidably arranged inside each sliding sleeve, the utility model discloses an oil pipe staple bolt, including oil pipe staple bolt body, first triangle piece lower extreme fixed surface is equipped with the second spring, the inside piston groove that is equipped with of oil pipe staple bolt body, the inside slip of piston groove is equipped with aerifys the movable block, it is fixed to aerify movable block one end and is equipped with the third triangle piece, the laminating of third triangle piece one side is connected and is equipped with the third spring, the inboard surface block of oil pipe staple bolt body is equipped with annular splint, annular splint fixed surface is equipped with a plurality of fixing bolt, the laminating of annular splint side surface is connected and is equipped with the sealed circle area of rubber, the inside fixed surface of oil pipe staple bolt body is equipped with a plurality of second stopper, the inboard threaded connection of oil pipe staple bolt body is equipped.
Preferably, first oil pipe and second oil pipe all with oil pipe staple bolt body inside surface threaded connection, first oil pipe and second oil pipe surface all are equipped with installation draw-in groove and seal groove, spacing cardboard is connected with installation draw-in groove block, the rubber seal area corresponds the setting with the seal groove.
Preferably, the hypotenuses of the first triangular block and the second triangular block are correspondingly attached and connected, and the hypotenuses of the third triangular block and the fourth triangular block are correspondingly attached and connected.
Preferably, the second limiting block is arranged between the two first limiting blocks, and the distance between the two first limiting blocks is smaller than the length of the first triangular block.
Preferably, separable slip sub-sleeve one end is inlayed and is connected inside separable slip female sleeve, and separable slip sub-sleeve both ends surface all fixedly are equipped with the spacing inserted bar of a plurality of, and spacing inserted bar and spacing slot looks adaptation, and spacing inserted bar and the setting of spacing slot one-to-one.
Preferably, the surfaces of the two sides of the rotating sleeve are fixedly provided with rotating sleeve sliding convex plates, and the rotating sleeve is connected with the inner side surface of the oil pipe hoop body in an embedded and sliding mode through the rotating sleeve sliding convex plates.
Preferably, aerify the movable block and pass through first square slide bar fixed connection with the third triangle piece, first square slide bar sliding connection is in oil pipe staple bolt body inside surface, and first triangle piece passes through second square slide bar fixed connection with spacing cardboard, and the square slide bar sliding connection of second is in sliding sleeve inside surface.
Preferably, the inflatable movable block is arranged on the inner side of the piston groove in a sliding manner, and one end of the piston groove is connected with the inner side surface of the rubber sealing ring belt through a vent groove pipeline.
Preferably, the method for installing the heat-preservation type lining downhole tubing coupling comprises the specific using steps of
S1: the two ends of the rubber sealing ring belt are fixedly pressed and tightly sealed on the inner side surface of the oil pipe hoop body through the fixing bolts and the annular clamping plate, the first oil pipe and the second oil pipe are screwed into the inner side of the oil pipe hoop body through threads respectively, and the two ends of the first oil pipe and the second oil pipe are clamped and connected, so that preliminary fixing is completed;
s2: the separable sliding sub-sleeve and the separable sliding sub-sleeve are pressed to enable the limiting insertion rod to be separated from the limiting slot, the rotating sleeves on the two sides of the surface of the oil pipe hoop body are rotated, and due to the fact that the second limiting blocks are arranged between the two first limiting blocks, and the distance between the two first limiting blocks is smaller than the length of the first triangular block, the situation that dislocation is caused by excessive displacement is avoided;
s3: the second triangular block on the inner side surface of the rotary sleeve extrudes the first triangular block so as to slide on the inner side of the sliding sleeve through a second square sliding rod, so that the limiting clamping plate at one end is clamped into the mounting clamping groove to fix the first oil pipe and the second oil pipe at two sides, meanwhile, the fourth triangular block extrudes the third triangular block, so that the third triangular block slides in the oil pipe hoop body through the first square sliding rod, the inflatable movable block at one end moves in the piston groove to extrude the air in the piston groove, so that the air enters the inner side of the rubber sealing ring belt through the vent groove pipeline, and the rubber sealing ring belt expands and bulges at the moment and is unfolded in the sealing groove so as to seal;
s4: when the separable sliding sub-sleeve and the separable sliding sub-sleeve are loosened, the first spring drives the separable sliding sub-sleeve and the separable sliding sub-sleeve to slide and separate in the sliding groove through the sliding block, so that the separable sliding sub-sleeve and the limiting inserted rod on the surfaces of the two ends of the separable sliding sub-sleeve are inserted into the limiting slot, the limiting and fixing of the rotating sleeve are completed, and the displacement and rotation are avoided;
s5: during the dismantlement, the first three hornblocks of second spring jack-up to drive spacing cardboard through the square slide bar of second and break away from the installation slot, three hornblocks of third spring jack-up, thereby first square slide bar drives and aerifys the movable block and slide that resets, takes the inboard air of rubber seal zone out through the air channel pipeline, makes the disappointing shrivelled of rubber seal zone, can conveniently dismantle first oil pipe and second oil pipe this moment.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the second triangular block on the surface of the inner side of the rotary sleeve extrudes the first triangular block so as to slide on the inner side of the sliding sleeve through the second square sliding rod, so that the limiting clamping plate at one end is clamped into the mounting clamping groove to fix the first oil pipe and the second oil pipe at two sides, meanwhile, the fourth triangular block extrudes the third triangular block, so that the third triangular block slides in the oil pipe hoop body through the first square sliding rod, the inflatable movable block at one end moves in the piston groove to extrude the air in the piston groove, so that the air enters the inner side of the rubber sealing ring belt through the vent groove pipeline, at the moment, the rubber sealing ring belt expands and bulges and is unfolded in the sealing groove, thereby sealing is carried out, and the sealing performance of the coupling is greatly improved;
2. according to the coupling assembling device, the separable sliding sub-sleeve and the separable sliding sub-sleeve are loosened, the first spring drives the separable sliding sub-sleeve and the separable sliding sub-sleeve to slide and separate in the sliding groove through the sliding block, so that the separable sliding sub-sleeve and the limiting insertion rods on the surfaces of the two ends of the separable sliding sub-sleeve are inserted into the limiting insertion grooves, the limiting and fixing of the rotating sleeve are completed, the displacement rotation is avoided, and the coupling assembling stability is improved;
3. according to the invention, when the oil pipe is disassembled, the second spring jacks the first triangular block, so that the second square sliding rod drives the limiting clamping plate to be separated from the mounting clamping groove, the third spring jacks the third triangular block, so that the first square sliding rod drives the inflatable movable block to reset and slide, air on the inner side of the rubber sealing ring belt is pumped out through the vent groove pipeline, the rubber sealing ring belt is deflated and shriveled, and at the moment, the first oil pipe and the second oil pipe can be conveniently disassembled.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is a first partial schematic of the present invention;
FIG. 4 is a second partial structural view of the present invention;
FIG. 5 is a schematic view of the first and second tubing configuration of the present invention;
FIG. 6 is a schematic perspective view of the present invention;
in the figure: 1. the oil pipe hoop body; 2. rotating the sleeve; 3. limiting slots; 4. rotating the sleeve sliding lug; 5. a limiting inserted rod; 6. a slider; 7. a first spring; 8. a separable sliding female sleeve; 9. a chute; 10. a separable sliding sub-sleeve; 11. a first oil pipe; 12. a second oil pipe; 13. a first triangular block; 14. a second triangular block; 15. a second spring; 16. a sliding sleeve; 17. a limiting clamping plate; 18. installing a clamping groove; 19. a sealing groove; 20. a piston groove; 21. an inflatable movable block; 22. a third spring; 23. a third triangular block; 24. a fourth triangular block; 25. a rubber seal ring band; 26. fixing the bolt; 27. an annular splint; 28. a first stopper; 29. and a second limiting block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: a heat preservation type lining downhole tubing coupling comprises a tubing anchor ear body 1, wherein a plurality of sliding grooves 9 are formed in the surface of the tubing anchor ear body 1, a plurality of sliding blocks 6 are arranged inside the sliding grooves 9 in a sliding mode, a separable sliding female sleeve 8 is arranged on one side of each sliding block 6, a separable sliding sub-sleeve 10 is arranged inside each separable sliding female sleeve 8 in a sliding mode, one end of each separable sliding sub-sleeve 10 is provided with a first spring 7 in a joint mode, two sides inside the tubing anchor ear body 1 are provided with rotating sleeves 2 in a sliding mode, a plurality of second triangular blocks 14 are fixedly arranged on the inner side surfaces of the rotating sleeves 2, a fourth triangular block 24 is fixedly arranged on one side surface of each second triangular block 14, a plurality of first limiting blocks 28 are fixedly arranged on the inner side surfaces of the rotating sleeves 2, a plurality of sliding sleeves 16 are fixedly arranged on the inner surface of the tubing, a limiting clamping plate 17 is arranged in the sliding sleeve 16 in a sliding manner, a first triangular block 13 is fixedly arranged at one end of the limiting clamping plate 17, a second spring 15 is fixedly arranged on the surface of the lower end of the first triangular block 13, a piston groove 20 is arranged in the oil pipe hoop body 1, an inflatable movable block 21 is arranged in the piston groove 20 in a sliding manner, a third triangular block 23 is fixedly arranged at one end of the inflatable movable block 21, a third spring 22 is arranged on one side of the third triangular block 23 in a joint manner, an annular clamping plate 27 is clamped on the inner side surface of the oil pipe hoop body 1, a plurality of fixing bolts 26 are fixedly arranged on the surface of the annular clamping plate 27, a rubber sealing ring belt 25 is arranged on one side surface of the annular clamping plate 27 in a joint manner, a plurality of second limiting blocks 29 are fixedly arranged on the inner surface of the oil pipe hoop body 1, and a second oil pipe 12 is arranged, and one end of the second oil pipe 12 is connected with a first oil pipe 11 in an embedding manner.
Preferably, first oil pipe 11 and second oil pipe 12 all with 1 inside surface threaded connection of oil pipe staple bolt body, first oil pipe 11 and second oil pipe 12 surface all are equipped with installation draw-in groove 18 and seal groove 19, spacing cardboard 17 is connected with installation draw-in groove 18 block, rubber seal ring area 25 corresponds the setting with seal groove 19.
Preferably, the bevel edges of the first triangular block 13 and the second triangular block 14 are correspondingly jointed and connected, and the bevel edges of the third triangular block 23 and the fourth triangular block 24 are correspondingly jointed and connected.
Preferably, the second stopper 29 is disposed between the two first stoppers 28, and a distance between the two first stoppers 28 is smaller than a length of the first triangular block 13.
Preferably, one end of the separable sliding sub-sleeve 10 is embedded and connected inside the separable sliding main sleeve 8, a plurality of limiting insertion rods 5 are fixedly arranged on the surfaces of the two ends of the separable sliding sub-sleeve 10 and the separable sliding sub-sleeve 10, the limiting insertion rods 5 are matched with the limiting slots 3, and the limiting insertion rods 5 are arranged in one-to-one correspondence with the limiting slots 3.
Preferably, 2 both sides surfaces of rotatory sleeve are all fixed and are equipped with rotatory sleeve slip flange 4, and rotatory sleeve 2 slides flange 4 and 1 inside surface mosaic sliding connection of oil pipe staple bolt body through rotatory sleeve.
Preferably, the inflatable movable block 21 and the third triangular block 23 are fixedly connected through a first square sliding rod, the first square sliding rod is slidably connected to the inner side surface of the oil pipe hoop body 1, the first triangular block 13 and the limiting clamping plate 17 are fixedly connected through a second square sliding rod, and the second square sliding rod is slidably connected to the inner side surface of the sliding sleeve 16.
Preferably, the inflatable movable block 21 is slidably disposed inside the piston groove 20, and one end of the piston groove 20 is connected to the inner surface of the rubber sealing ring belt 25 through a vent groove pipe.
Preferably, the method for installing the heat-preservation type lining downhole tubing coupling comprises the specific using steps of
S1: two ends of the rubber sealing ring belt 25 are fixedly pressed and sealed on the inner side surface of the oil pipe hoop body 1 through the fixing bolts 26 and the annular clamping plate 27, the first oil pipe 11 and the second oil pipe 12 are screwed into the inner side of the oil pipe hoop body 1 through threads respectively, and the two ends of the first oil pipe 11 and the second oil pipe 12 are connected in a clamping manner, so that preliminary fixing is completed;
s2: the separable sliding sub-sleeve 10 and the separable sliding sub-sleeve 10 are pressed to enable the limiting inserted rod 5 to be separated from the limiting slot 3, at the moment, the rotating sleeves 2 on the two sides of the surface of the oil pipe hoop body 1 are rotated, and due to the fact that the second limiting blocks 29 are arranged between the two first limiting blocks 28, and the distance between the two first limiting blocks 28 is smaller than the length of the first triangular block 13, the worry that dislocation is caused by excessive displacement is avoided;
s3: the second triangular block 14 on the surface of the inner side of the rotary sleeve 2 extrudes the first triangular block 13 to slide on the inner side of the sliding sleeve 16 through the second square sliding rod, so that the limiting clamping plate 17 at one end is clamped into the mounting clamping groove 18 to fix the first oil pipe 11 and the second oil pipe 12 at two sides, meanwhile, the fourth triangular block 24 extrudes the third triangular block 23 to slide in the oil pipe hoop body 1 through the first square sliding rod, so that the inflatable movable block 21 at one end moves in the piston groove 20 to extrude the air in the piston groove 20, so that the air enters the inner side of the rubber sealing ring belt 25 through the vent groove pipeline, and at the moment, the rubber sealing ring belt 25 expands and bulges to expand in the sealing groove 19, so as to carry out sealing;
s3: when the separable sliding sub-sleeve 10 and the separable sliding sub-sleeve 10 are released, the first spring 7 drives the separable sliding sub-sleeve 10 and the separable sliding sub-sleeve 10 to slide and separate in the sliding groove 9 through the sliding block 6, so that the limit inserting rods 5 on the two end surfaces of the separable sliding sub-sleeve 10 and the separable sliding sub-sleeve 10 are inserted into the limit inserting grooves 3, and the limit fixing of the rotating sleeve 2 is completed, and the displacement rotation is avoided;
s4: during the dismantlement, first three hornblocks 13 of second spring 15 jack-up to drive spacing cardboard 17 through the square slide bar of second and break away from installation draw-in groove 18, third three hornblocks 23 of third spring 22 jack-up, thereby first square slide bar drives and aerifys movable block 21 and slide that resets, takes the inboard air of rubber seal area 25 out through the air channel pipeline, makes the disappointing shrivelled of rubber seal area 25, can conveniently dismantle first oil pipe 11 and second oil pipe 12 this moment.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a heat preservation type inside lining is tubing coupling in pit, includes oil pipe staple bolt body (1), its characterized in that: the oil pipe hoop body (1) is provided with a plurality of sliding grooves (9) on the surface, a plurality of sliding blocks (6) are arranged in the sliding grooves (9) in a sliding manner, a separable sliding female sleeve (8) is arranged on one side of the sliding blocks (6), a separable sliding sub-sleeve (10) is arranged in the separable sliding female sleeve (8) in a sliding manner, one end of the separable sliding sub-sleeve (10) is provided with a first spring (7) in a fitting connection manner, two sides in the oil pipe hoop body (1) are provided with a rotating sleeve (2) in a sliding manner, a plurality of second triangular blocks (14) are fixedly arranged on the inner side surface of the rotating sleeve (2), a fourth triangular block (24) is fixedly arranged on one side surface of each second triangular block (14), a plurality of first limiting blocks (28) are fixedly arranged on the inner side surface of the rotating sleeve (2), a plurality of sliding sleeves (16) are fixedly arranged on, the oil pipe hoop body is characterized in that a limiting clamping plate (17) is arranged in the sliding sleeve (16) in a sliding mode, a first triangular block (13) is fixedly arranged at one end of the limiting clamping plate (17), a second spring (15) is fixedly arranged on the surface of the lower end of the first triangular block (13), a piston groove (20) is arranged in the oil pipe hoop body (1), an inflatable movable block (21) is arranged in the piston groove (20) in a sliding mode, a third triangular block (23) is fixedly arranged at one end of the inflatable movable block (21), a third spring (22) is arranged on one side of the third triangular block (23) in a laminating mode, an annular clamping plate (27) is arranged on the inner side surface of the oil pipe hoop body (1) in a clamping mode, a plurality of fixing bolts (26) are fixedly arranged on the surface of the annular clamping plate (27), a rubber sealing ring belt (25) is arranged on one side surface of the annular clamping plate (27), and a plurality of second, the oil pipe staple bolt is characterized in that a second oil pipe (12) is arranged on the inner side of the oil pipe staple bolt body (1) in a threaded connection mode, and a first oil pipe (11) is arranged at one end of the second oil pipe (12) in an embedded connection mode.
2. The insulated, lined, downhole tubing coupling of claim 1, wherein: first oil pipe (11) and second oil pipe (12) all with oil pipe staple bolt body (1) inside surface threaded connection, first oil pipe (11) and second oil pipe (12) surface all are equipped with installation draw-in groove (18) and seal groove (19), spacing cardboard (17) are connected with installation draw-in groove (18) block, rubber seal ring area (25) correspond the setting with seal groove (19).
3. The insulated, lined, downhole tubing coupling of claim 1, wherein: the hypotenuse of the first triangular block (13) and the second triangular block (14) is correspondingly attached and connected, and the hypotenuse of the third triangular block (23) and the hypotenuse of the fourth triangular block (24) are correspondingly attached and connected.
4. The insulated, lined, downhole tubing coupling of claim 1, wherein: the second limiting block (29) is arranged between the two first limiting blocks (28), and the distance between the two first limiting blocks (28) is smaller than the length of the first triangular block (13).
5. The insulated, lined, downhole tubing coupling of claim 1, wherein: separable slip sub-sleeve (10) one end is inlayed and is connected inside separable slip mother's sleeve (8), and separable slip sub-sleeve (10) both ends surface all fixed be equipped with a plurality of spacing inserted bar (5), spacing inserted bar (5) and spacing slot (3) looks adaptation, and spacing inserted bar (5) and spacing slot (3) one-to-one setting.
6. The insulated, lined, downhole tubing coupling of claim 1, wherein: the surface of each of two sides of the rotary sleeve (2) is fixedly provided with a rotary sleeve sliding convex plate (4), and the rotary sleeve (2) is connected with the inner side surface of the oil pipe hoop body (1) in an embedded sliding mode through the rotary sleeve sliding convex plates (4).
7. The insulated, lined, downhole tubing coupling of claim 1, wherein: aerify movable block (21) and third triangle piece (23) through first square slide bar fixed connection, first square slide bar sliding connection in oil pipe staple bolt body (1) inboard surface, first triangle piece (13) and spacing cardboard (17) are through the square slide bar fixed connection of second, the square slide bar sliding connection of second in sliding sleeve (16) inboard surface.
8. The insulated, lined, downhole tubing coupling of claim 1, wherein: the inflatable movable block (21) is arranged on the inner side of the piston groove (20) in a sliding mode, and one end of the piston groove (20) is connected with the inner side surface of the rubber sealing ring belt (25) through a ventilation groove pipeline.
9. A method for installing a heat-preservation type lining underground tubing coupling is characterized by comprising the following steps: the specific using steps are
S1: two ends of a rubber sealing ring belt (25) are fixedly pressed and sealed on the inner side surface of the oil pipe hoop body (1) through a fixing bolt (26) and an annular clamping plate (27), a first oil pipe (11) and a second oil pipe (12) are screwed into the inner side of the oil pipe hoop body (1) through threads respectively, and two ends of the first oil pipe (11) and the second oil pipe (12) are connected in a clamping manner, so that primary fixing is completed;
s2: the separable sliding sub-sleeve (10) and the separable sliding sub-sleeve (10) are pressed to enable the limiting insertion rod (5) to be separated from the limiting slot (3), at the moment, the rotating sleeves (2) on the two sides of the surface of the oil pipe hoop body (1) are rotated, and due to the fact that the second limiting blocks (29) are arranged between the two first limiting blocks (28) and the distance between the two first limiting blocks (28) is smaller than the length of the first triangular block (13), the situation that dislocation is caused by excessive displacement is avoided;
s3: a second triangular block (14) on the surface of the inner side of the rotary sleeve (2) extrudes a first triangular block (13) to slide on the inner side of a sliding sleeve (16) through a second square sliding rod, a limiting clamping plate (17) at one end is clamped into an installation clamping groove (18) to fix a first oil pipe (11) and a second oil pipe (12) at two sides, meanwhile, a fourth triangular block (24) extrudes a third triangular block (23) to slide in an oil pipe hoop body (1) through the first square sliding rod, an inflatable movable block (21) at one end moves in a piston groove (20), air in the piston groove (20) is extruded, the air enters the inner side of a rubber sealing ring belt (25) through a vent groove pipeline, and the rubber sealing ring belt (25) expands and expands in the sealing groove (19) to seal;
s4: when the separable sliding sub-sleeve (10) and the separable sliding sub-sleeve (10) are loosened, the first spring (7) drives the separable sliding sub-sleeve (10) and the separable sliding sub-sleeve (10) to slide and separate in the sliding groove (9) through the sliding block (6), so that the separable sliding sub-sleeve (10) and the limiting insertion rods (5) on the two end surfaces of the separable sliding sub-sleeve (10) are inserted into the limiting insertion grooves (3), the limiting fixation of the rotating sleeve (2) is completed, and the displacement rotation is avoided;
s5: during the dismantlement, first three hornblocks (13) of second spring (15) jack-up, thereby drive spacing cardboard (17) through the square slide bar of second and break away from installation slot (18), third spring (22) jack-up third three hornblocks (23), thereby first square slide bar drives and aerifys movable block (21) slip that resets, take the air of rubber seal area (25) inboard out through the air channel pipeline, make the disappointing shrivelled of rubber seal area (25), can conveniently dismantle first oil pipe (11) and second oil pipe (12) this moment.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010548420.9A CN111663907B (en) | 2020-06-16 | 2020-06-16 | Heat-preservation type lining underground tubing coupling and installation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010548420.9A CN111663907B (en) | 2020-06-16 | 2020-06-16 | Heat-preservation type lining underground tubing coupling and installation method thereof |
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| CN111663907A true CN111663907A (en) | 2020-09-15 |
| CN111663907B CN111663907B (en) | 2020-12-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360361A (en) * | 2020-12-03 | 2021-02-12 | 中国石油集团渤海钻探工程有限公司 | Self-locking type non-coupling casing hoop installation tool |
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| CA2345586A1 (en) * | 2000-04-28 | 2001-10-28 | Baker Hughes Incorporated | Packer annulus differential pressure valve |
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| CA2345586A1 (en) * | 2000-04-28 | 2001-10-28 | Baker Hughes Incorporated | Packer annulus differential pressure valve |
| US20100116502A1 (en) * | 2008-11-13 | 2010-05-13 | Anderson David Z | Tubing Pressure Insensitive Control System |
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| CN103850676A (en) * | 2012-11-30 | 2014-06-11 | 中国石油集团川庆钻探工程有限公司 | Novel casing coupling positioner for coiled tubing |
| CN206206907U (en) * | 2016-09-23 | 2017-05-31 | 扬州兆星科技有限公司 | Prestressed tubing box cupling attemperator |
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| CN112360361A (en) * | 2020-12-03 | 2021-02-12 | 中国石油集团渤海钻探工程有限公司 | Self-locking type non-coupling casing hoop installation tool |
| CN112360361B (en) * | 2020-12-03 | 2021-11-02 | 中国石油集团渤海钻探工程有限公司 | Self-locking type non-coupling casing hoop installation tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111663907B (en) | 2020-12-22 |
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