CN215213442U

CN215213442U - Multi-cluster sliding sleeve staged fracturing string for horizontal well

Info

Publication number: CN215213442U
Application number: CN202121491066.7U
Authority: CN
Inventors: 陈刚
Original assignee: Wuhan Lier Mechanical And Electrical Equipment Co ltd
Current assignee: Wuhan Lier Mechanical And Electrical Equipment Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2021-12-17
Anticipated expiration: 2031-06-30

Abstract

The utility model relates to a fracturing string technical field just discloses a horizontal well is many bunches of sliding sleeve staged fracturing string, shaft right side fixedly connected with horizontal well, is close to the right side in the horizontal well and is provided with the seat ball seat, and seat ball seat left side fixedly connected with leads presses the sandblast ware, and the horizontal well corresponds and leads the sandblast ware and has seted up the sandblast mouth, leads and presses sandblast ware left side fixedly connected with hydraulic anchor, hydraulic anchor left side fixedly connected with fast-assembling mechanism, fast-assembling mechanism left side fixedly connected with oil pipe. This many bunches of sliding sleeve staged fracturing tubular columns of horizontal well, when needs are connected oil pipe and hydraulic anchor, only need fill in the bayonet joint with the fastening head in, through the joint annular of fastening head and the sealed tighrening ring joint of bayonet joint, can reach the preliminary joint and the sealing of fastening head and bayonet joint, the laminating ring is closely laminated with the fastening head outer wall simultaneously, can further realize sealed effect, the spring promotes the fastening ring right and makes rubber ring and the laminating of bayonet joint, further reaches sealed purpose.

Description

Multi-cluster sliding sleeve staged fracturing string for horizontal well

Technical Field

The utility model relates to a fracturing string technical field specifically is a many bunches of sliding sleeve staged fracturing tubular columns of horizontal well.

Background

The oil well is a hole drilled by a well arrangement system planned according to the development of an oil field, the oil rises to a passage of a wellhead from a well bottom, and the oil well is a hole drilled by a drilling method. After drilling oil layer, the oil layer casing is set, and the cement is injected into the annular space between casing and well wall to maintain well wall and seal oil, gas and water layer.

The horizontal well technology has the advantages of large oil drainage area, high single well yield, high reserve utilization degree and the like in the process of developing an oil and gas reservoir, is widely applied to oil reservoirs with integral assembly, fault blocks, edge and bottom water, thickened oil, low permeability, special lithology and the like at present, plays an important role in the development of marginal oil fields with complex fault blocks, thickened oil, low permeability and the like, and has the application proportion of over 60 percent.

The horizontal well technology needs to use the fracturing string in the use process, the existing fracturing string and the oil pipe intermediate connection are relatively troublesome, the later-stage quick installation and quick disassembly are not easy, the fracturing string is inconvenient to maintain, and therefore the improvement is needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a many bunches of sliding sleeve staged fracturing tubular columns of horizontal well to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a many bunches of sliding sleeve staged fracturing tubular columns of horizontal well, includes the shaft, shaft right side fixedly connected with horizontal well, be close to the right side in the horizontal well and be provided with the setting ball seat, setting ball seat left side fixedly connected with leads presses the sand blaster, the horizontal well corresponds and leads the pressure sand blaster and has seted up the sandblast mouth, lead and press sand blaster left side fixed connection packer, packer left side fixedly connected with hydraulic anchor, hydraulic anchor left side fixedly connected with fast-assembling mechanism, fast-assembling mechanism left side fixedly connected with oil pipe.

The quick-assembling mechanism comprises a plug, the plug is fixedly connected to the left side of the hydraulic anchor, a middle fixedly connected with sealing clamping ring is arranged in the plug, a fastening head is connected to the inner ring of the sealing ring in a clamping mode, a supporting ring is fixedly connected to the left side of the outer wall of the fastening head, a sliding rod is slidably connected to the middle of the supporting ring, a fastening ring is fixedly connected to the right end of the sliding rod, a spring is sleeved on the sliding rod between the supporting ring and the fastening ring, a bonding ring is fixedly connected to the inner ring of the fastening ring, a rubber ring is fixedly connected to the right side of the fastening ring, and a clamping mechanism is fixedly connected to the inner side of the fastening head.

Preferably, the support ring corresponds the slide bar and has seted up the slip hole, the support ring has the slide bar through slide hole sliding connection, slide bar left end fixedly connected with spacing piece can make things convenient for smooth and easy slip of slide bar through the slip hole, and when spacing piece can prevent fastening head and bayonet joint from breaking away from, the spring released the slide bar in the slip hole.

Preferably, the inner ring of the laminating ring is tightly laminated with the outer wall of the fastening head, the right side of the rubber ring is tightly laminated with the left side of the plug connector, and the laminating ring and the rubber ring can ensure that the fastening head and the plug connector have good sealing performance.

Preferably, the clamping mechanism includes the joint hole, the joint hole is seted up in bayonet joint left side, the mounting hole has been seted up to the fastening head corresponding joint hole, the fastening head has cup jointed the joint round pin through the mounting hole, the joint round pin is kept away from the first spacing ring of joint hole one end fixedly connected with, the mounting hole is at the first spacing ring outside fixedly connected with second spacing ring.

Preferably, the fastening head is at the bottom fixedly connected with installation piece in the mounting hole, the installation piece left side is rotated and is connected with the guide pulley, the stay cord hole has been seted up on the guide pulley left side to the fastening head, the joint round pin is close to guide pulley one end fixedly connected with stay cord, the stay cord has cup jointed reciprocating spring in the mounting hole, can make things convenient for joint round pin business turn over joint round pin through the stay cord to realize the quick detach of fastening head and bayonet joint.

Preferably, the stay cord winding is on the guide pulley surface, stay cord left end fixedly connected with pull ring, pull ring can conveniently stimulate the stay cord, can make things convenient for the joint round pin to pull out the joint hole through guide pulley cooperation stay cord.

Preferably, the stay cord is arranged in the stay cord hole of the fastening head, the clamping pit is clamped at one end, away from the first limiting ring, of the clamping pin, and the quick assembly and the quick disassembly between the fastening head and the plug connector can be achieved.

Compared with the prior art, the utility model provides a many bunches of sliding sleeve staged fracturing tubular columns of horizontal well possesses following beneficial effect:

1. this many bunches of sliding sleeve staged fracturing tubular columns of horizontal well, through the fast-assembling mechanism that sets up, when needs are connected oil pipe and hydraulic anchor, only need fill in the bayonet joint with the fastening head in, the joint annular through the fastening head and the sealed tighrening ring joint of bayonet joint, can reach the preliminary joint and the sealing of fastening head and bayonet joint, the ring is closely laminated with the fastening head outer wall to the laminating simultaneously, can further realize sealed effect, and behind fastening head and bayonet joint cooperation, the spring promotes the tighrening ring right and makes rubber ring and bayonet joint laminating, further reach sealed purpose.

2. This many bunches of sliding sleeve staged fracturing tubular columns of horizontal well, through the clamping mechanism who sets up, when the bayonet joint is filled in to fastening head, in the joint hole is advanced in the joint round pin joint, can further realize the joint purpose, thereby reach the fast-assembling effect, simultaneously through pull ring pulling stay cord, can conveniently pull back the mounting hole with the joint round pin under the cooperation of guide pulley in, make joint round pin and joint hole break away from, thereby pull fastening head and bayonet joint to both sides hard, can realize the quick detach purpose.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive labor:

FIG. 1 is a front view of the overall structure of the present invention;

FIG. 2 is a schematic sectional view of the front part of the overall structure of the present invention;

FIG. 3 is a schematic front sectional view of the clamping mechanism and the quick-mount mechanism taken;

FIG. 4 is a schematic sectional view taken in front of the clamping mechanism;

fig. 5 is an enlarged schematic view of a portion a in fig. 4.

In the figure: 1. a shaft; 2. an oil pipe; 3. a quick-mounting mechanism; 31. a fastening head; 32. sealing the clamping ring; 33. a plug-in connector; 34. a fastening ring; 341. fitting a ring; 35. a rubber ring; 36. a clamping mechanism; 361. a pull ring; 3611. a latch pin; 3612. a clamping pit; 3613. pulling a rope; 362. mounting holes; 363. a first limit ring; 364. a second stop collar; 365. mounting blocks; 367. a guide wheel; 368. a rope pulling hole; 369. a return spring; 37. clamping the ring groove; 38. a limiting sheet; 381. a support ring; 39. a slide bar; 391. a spring; 4. a sand blasting port; 5. horizontal wells; 6. setting a ball seat; 7. a pressure-guiding sand blower; 8. a packer; 9. and (4) a hydraulic anchor.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a many bunches of sliding sleeve staged fracturing tubular columns of horizontal well, including shaft 1, 1 right side fixedly connected with horizontal well 5 of shaft, be provided with the seat ball seat 6 near the right side in the horizontal well 5, seat ball seat 6 left side fixedly connected with leads and presses sand blaster 7, 5 horizontal wells correspond and lead and press sand blaster 7 and seted up sandblast mouth 4, lead and press sand blaster 7 left side fixed

connection packer

8, 8 left sides fixedly connected with hydraulic anchor 9 of packer, 9 left sides fixedly connected with ready-packaged mechanism 3 of hydraulic anchor, 3 left sides fixedly connected with oil pipe 2 of ready-packaged mechanism.

The quick assembly mechanism 3 comprises a plug 33, the plug 33 is fixedly connected with the left side of the hydraulic anchor 9, a sealing clamping ring 32 is fixedly connected with the middle inside the plug 33, a fastening head 31 is clamped on the inner ring of the sealing clamping ring 32, the left side of the outer wall of the fastening head 31 is fixedly connected with a support ring 381, a sliding rod 39 is slidably connected with the middle of the support ring 381, a sliding hole is formed in the support ring 381 corresponding to the sliding rod 39, the support ring 381 is slidably connected with a sliding rod 39 through the sliding hole, the left end of the sliding rod 39 is fixedly connected with a limiting piece 38, the right end of the sliding rod 39 is fixedly connected with a fastening ring 34, a spring 391 is sleeved between the support ring 381 and the fastening ring 34 by the sliding rod 39, a bonding ring 341 is fixedly connected with the inner ring of the fastening ring 34, a rubber ring 35 is fixedly connected with the right side of the fastening ring 34, the inner ring of the bonding ring 341 is tightly bonded with the outer wall of the fastening head 31, the left side of the plug 33 is tightly bonded with the right side of the rubber ring 35, a clamping mechanism 36 is fixedly connected inside the fastening head 31, through the fast-assembling mechanism 3 that sets up, when needs are connected oil pipe 2 and hydraulic anchor 9, only need fill in the bayonet joint 33 with fastening head 31 in, joint annular 37 through fastening head 31 and the sealed snap ring 32 joint of bayonet joint 33, can reach the preliminary joint and the sealing of fastening head 31 and bayonet joint 33, the laminating ring 341 closely laminates with fastening head 31 outer wall simultaneously, can further realize sealed effect, and behind fastening head 31 and the cooperation of bayonet joint 33, spring 391 promotes fastening ring 34 right and makes rubber ring 35 and the laminating of bayonet joint 33 laminate, further reach sealed purpose.

The clamping mechanism 36 comprises a clamping pit 3612, the clamping pit 3612 is arranged on the left side in the plug-in connector 33, a mounting hole 362 is formed in the fastening head 31 corresponding to the clamping pit 3612, a clamping pin 3611 is sleeved on the fastening head 31 through the mounting hole 362, one end, far away from the clamping pit 3612, of the clamping pin 3611 is fixedly connected with a first limiting ring 363, a second limiting ring 364 is fixedly connected to the outer side of the first limiting ring 363 through the mounting hole 362, a mounting block 365 is fixedly connected to the bottom of the fastening head 31 in the mounting hole 362, a guide wheel 367 is rotatably connected to the left side of the mounting block 365, a pull rope hole 368 is formed in the left side of the guide wheel 367 of the fastening head 31, one end, close to the guide wheel 367, of the clamping pin 3611 is fixedly connected with a pull rope 3613, a reciprocating spring 369 is sleeved in the mounting hole 362 of the pull rope 3613, the pull rope 3613 is wound on the surface of the guide wheel 367, a pull rope 3613 is fixedly connected to the left end, a clamping pit 3612 is arranged in the pull rope hole 368 of the clamping pin 3611, one end, far away from the first limiting ring 363, a clamping pit 3612 is arranged, through the clamping mechanism 36 who sets up, when the bayonet joint 33 is filled in to fastening head 31, joint round pin 3611 joint advances in joint hole 3612, can further realize the joint purpose, thereby reach the fast-assembling effect, pull rope 3613 is pulled through pull ring 361 simultaneously, can conveniently pull back joint round pin 3611 in mounting hole 362 under the cooperation of guide wheel 367, make joint round pin 3611 and joint hole 3612 break away from, thereby pulling fastening head 31 and bayonet joint 33 to both sides hard, can realize the quick detach purpose.

In the practical operation process, when the device is used, when the oil pipe 2 and the hydraulic anchor 9 need to be connected, only the fastening head 31 needs to be plugged into the plug-in connector 33, primary clamping and sealing of the fastening head 31 and the plug-in connector 33 can be achieved by clamping the clamping ring groove 37 of the fastening head 31 with the sealing clamping ring 32 of the plug-in connector 33, the outer wall of the bonding ring 341 and the outer wall of the fastening head 31 are tightly bonded, the sealing effect can be further achieved, after the fastening head 31 is matched with the plug-in connector 33, the spring 391 pushes the fastening ring 34 rightwards to enable the rubber ring 35 to be bonded with the plug-in connector 33, the sealing purpose is further achieved, when the fastening head 31 is plugged into the plug-in connector 33, the clamping pin 3611 is clamped into the clamping pit 3612, the clamping purpose can be further achieved, the clamping effect is achieved, meanwhile, the pull rope 3613 is pulled through the pull ring 361, the clamping pin 3611 can be conveniently pulled back into the mounting hole 362 under the matching of the guide wheel 367, so that the snap pins 3611 and the snap pits 3612 are separated, and the fastening head 31 and the plug connector 33 are pulled towards two sides by force, thereby achieving the purpose of quick release.

The infinite stage multistage multi-cluster fracturing process method for the horizontal well comprises the following steps:

step 1, inputting a starting tool: and opening a gate of the well mouth, putting the starting tool into the well mouth, and closing the gate.

Step 2, opening the sliding sleeve: the small-displacement hydraulic pumping operation enables the starting tool to advance to an infinite-stage fracturing sand blasting sliding sleeve; if the infinite stage fracturing sand blasting sliding sleeve is not a sliding sleeve to be opened, the starting tool continues to move forwards until the sliding sleeve needs to be started.

Step 3, fracturing construction: and (5) constructing according to construction design.

Step 4, production of test oil (gas): and (3) quickly dissolving the soluble ball and the soluble ball seat after fracturing, and performing open-flow oil testing and gas testing production according to a normal procedure.

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

1. The utility model provides a many bunches of sliding sleeve staged fracturing tubular columns of horizontal well, includes shaft (1), its characterized in that: a horizontal well (5) is fixedly connected to the right side of the vertical well (1), a setting ball seat (6) is arranged in the horizontal well (5) close to the right side, a pressure-guiding sand blower (7) is fixedly connected to the left side of the setting ball seat (6), a sand blasting port (4) is formed in the horizontal well (5) corresponding to the pressure-guiding sand blower (7), a packer (8) is fixedly connected to the left side of the pressure-guiding sand blower (7), a hydraulic anchor (9) is fixedly connected to the left side of the packer (8), a quick assembly mechanism (3) is fixedly connected to the left side of the hydraulic anchor (9), and an oil pipe (2) is fixedly connected to the left side of the quick assembly mechanism (3);

fast-assembling mechanism (3) include bayonet joint (33), bayonet joint (33) fixed connection is in hydraulic anchor (9) left side, fixedly connected with seals chucking ring (32) in the middle of in bayonet joint (33), seals chucking ring (32) inner circle joint has fastening head (31), fastening head (31) outer wall left side fixedly connected with support ring (381), sliding connection has slide bar (39) in the middle of support ring (381), slide bar (39) right-hand member fixedly connected with fastening ring (34), spring (391) has been cup jointed in slide bar (39) between support ring (381) and fastening ring (34), fastening ring (34) inner circle fixedly connected with pastes ring (341), fastening ring (34) right side fixedly connected with rubber ring (35), fixedly connected with clamping mechanism (36) in fastening head (31).

2. The horizontal well multi-cluster sliding sleeve staged fracturing string as claimed in claim 1, wherein: the support ring (381) corresponds slide bar (39) and has been seted up the slip hole, support ring (381) has slide bar (39) through slide hole sliding connection, slide bar (39) left end fixedly connected with spacing piece (38).

3. The horizontal well multi-cluster sliding sleeve staged fracturing string as claimed in claim 1, wherein: the inner ring of the bonding ring (341) is tightly bonded with the outer wall of the fastening head (31), and the right side of the rubber ring (35) is tightly bonded with the left side of the plug connector (33).

4. The horizontal well multi-cluster sliding sleeve staged fracturing string as claimed in claim 1, wherein: clamping mechanism (36) include joint hole (3612), left side in bayonet joint (33) is seted up in joint hole (3612), mounting hole (362) have been seted up to fastening head (31) corresponding joint hole (3612), fastening head (31) have cup jointed joint round pin (3611) through mounting hole (362), joint round pin (3611) are kept away from joint hole (3612) one end fixedly connected with first spacing ring (363), mounting hole (362) are at first spacing ring (363) outside fixedly connected with second spacing ring (364).

5. The horizontal well multi-cluster sliding sleeve staged fracturing string as claimed in claim 4, wherein: the fastening head (31) is fixedly connected with an installation block (365) at the bottom in the installation hole (362), the left side of the installation block (365) is rotatably connected with a guide wheel (367), a rope pulling hole (368) is formed in the left side of the guide wheel (367) of the fastening head (31), one end of a clamping pin (3611) close to the guide wheel (367) is fixedly connected with a pull rope (3613), and a reciprocating spring (369) is sleeved in the installation hole (362) of the pull rope (3613).

6. The horizontal well multi-cluster sliding sleeve staged fracturing string as claimed in claim 5, wherein: the pull rope (3613) is wound on the surface of the guide wheel (367), and the left end of the pull rope (3613) is fixedly connected with a pull ring (361).

7. The horizontal well multi-cluster sliding sleeve staged fracturing string as claimed in claim 5, wherein: a pull rope (3613) is arranged in a pull rope hole (368) of the fastening head (31), and a clamping pit (3612) is clamped at one end, far away from the first limiting ring (363), of the clamping pin (3611).