CN220081369U - Expansion pipe for repeated fracturing during shaft reconstruction - Google Patents

Abstract

The utility model discloses an expansion pipe for repeated fracturing during shaft reconstruction, which relates to the technical field of shaft reconstruction and comprises a shaft, wherein expansion rubber is contacted with the inside of the shaft, a connecting plate is fixedly connected to the expansion rubber, a pipe body is connected to the expansion rubber in a sliding manner, lifting lugs are fixedly connected to the pipe body, a dismounting mechanism is arranged on the pipe body, and a limiting mechanism is arranged on the pipe body. The utility model provides an expansion pipe for shaft reconstruction repeated fracturing, which can drive a hexagonal limiting block to vertically move by pulling a pull rod, can limit and fix a handle when the hexagonal limiting block is slidably inserted into a hexagonal limiting groove, can release the limit of the handle when the hexagonal limiting block is moved out of the hexagonal limiting groove, enables the hexagonal limiting block to be more stable when being limited by pushing the hexagonal limiting block through a set spring, and increases the stability of the expansion pipe for shaft reconstruction repeated fracturing when being used by setting a limiting mechanism.

Description

Expansion pipe for repeated fracturing during shaft reconstruction

Technical Field

The utility model relates to the technical field of petroleum shaft reconstruction, in particular to an expansion pipe for repeated fracturing during shaft reconstruction.

Background

The utility model patent with the publication number of CN213510530U discloses an expansion packer for repairing a shaft, which comprises a plugging base pipe and the shaft, wherein clamping grooves are uniformly formed in the outer surface of the plugging base pipe, expansion rubber rings are clamped in the clamping grooves, deformation rings are uniformly and fixedly arranged on the outer surface of the plugging base pipe, the cross section of each deformation ring is of a wavy structure, and the clamping grooves and the deformation rings are alternately arranged. The device can promote the sealing performance between the plugging base pipe and the well casing damage section through the cooperation of the structures such as the deformation ring, the expansion rubber ring and the like, and avoid generating secondary leakage points. But in the prior art, the shutoff base pipe is not convenient enough to dismantle, and it is also not convenient enough to need to change after leading to the inflation rubber circle ageing, can influence the sealed effect of shutoff.

Disclosure of Invention

The utility model provides an expansion pipe for shaft reconstruction repeated fracturing, which solves the technical problem that the disassembly of a plugging base pipe is inconvenient.

In order to solve the technical problems, the expansion pipe for the reconstruction and repeated fracturing of the shaft comprises a shaft, wherein expansion rubber is contacted with the interior of the shaft, a connecting plate is fixedly connected to the expansion rubber, a pipe body is connected to the expansion rubber in a sliding manner, lifting lugs are fixedly connected to the pipe body, a dismounting mechanism is arranged on the pipe body, a limiting mechanism is arranged on the pipe body, a supporting plate is contacted with the pipe body, a positioning rod is sleeved in the pipe body in a sliding manner, the positioning rod is fixedly connected with the supporting plate, and the supporting plate is fixedly connected with the shaft.

Preferably, the expansion rubber is arc-shaped, and the connecting plate is arc-shaped, so that the sealing effect can be improved by arranging the expansion rubber into an arc shape.

Preferably, the dismounting mechanism comprises a threaded sleeve plate, a connecting rod, a fixing block, a positive and negative screw rod and a handle, wherein the positive and negative screw rod is connected to the inside of the pipe body through a bearing, the handle is fixedly connected to the positive and negative screw rod, four threaded sleeve plates are sleeved on the outer side of the positive and negative screw rod through threads, and the threaded sleeve plates on two sides of the positive and negative screw rod can be driven to move reversely through the rotation of the positive and negative screw rod.

Preferably, the threaded sleeve plate is hinged with a connecting rod, the connecting rod is hinged with a fixed block, the fixed block is fixedly connected with the connecting plate, and the two threaded sleeve plates move reversely to drive the expansion rubber to move horizontally through the connecting rod.

Preferably, the stop gear includes pull rod, slide bar, spring, L type member, hexagonal stopper, hexagonal spacing groove, the hexagonal spacing groove has been seted up to the inside of handle, the inside sliding connection in hexagonal spacing groove has the hexagonal stopper, fixedly connected with slide bar on the hexagonal stopper, fixedly connected with pull rod on the slide bar, L type member has been cup jointed in the outside slip of slide bar, L type member and handle sliding connection, L type member passes through the bearing connection with the body, inserts in the hexagonal spacing groove through the hexagonal stopper, can carry out spacing fixedly to the handle.

Preferably, the outside of slide bar is provided with the spring, the one end and the L type pole piece fixed connection of spring, the other end and the hexagonal stopper fixed connection of spring promotes the hexagonal stopper through the spring that sets up, makes the hexagonal stopper more stable when spacing.

Compared with the related art, the expansion pipe for the repeated fracturing for the reconstruction of the shaft has the following beneficial effects:

the utility model provides an expansion pipe for shaft reconstruction repeated fracturing, wherein an shedding handle drives a positive and negative screw rod to rotate, two adjacent threaded sleeve plates can be driven to reversely move, a fixed block and a supporting plate can be driven to horizontally move through a connecting rod by moving the two threaded sleeve plates, the expanding rubber can be driven to horizontally move through horizontally moving the supporting plate, when sealing is needed, the expanding rubber is tightly attached to the inner wall of a shaft by rotating the handle clockwise, when dismantling is needed, the expanding rubber is not contacted with the shaft by rotating the handle anticlockwise, and the pipe body can be dismantled.

The utility model provides an expansion pipe for shaft reconstruction repeated fracturing, which can drive a hexagonal limiting block to vertically move by pulling a pull rod, can limit and fix a handle when the hexagonal limiting block is slidably inserted into a hexagonal limiting groove, can release the limit of the handle when the hexagonal limiting block is moved out of the hexagonal limiting groove, enables the hexagonal limiting block to be more stable when being limited by pushing the hexagonal limiting block through a set spring, and increases the stability of the expansion pipe for shaft reconstruction repeated fracturing when being used by setting a limiting mechanism.

Drawings

FIG. 1 is a perspective view of the overall structure of the present utility model;

FIG. 2 is a front cross-sectional view of FIG. 1 of the present utility model;

FIG. 3 is a top cross-sectional view of the tube of FIG. 2 according to the present utility model;

fig. 4 is a top view of the handle of fig. 2 in accordance with the present utility model.

Reference numerals in the drawings: 1. a wellbore; 2. a tube body; 3. an expanded rubber; 4. a support plate; 5. a connecting plate; 6. a positioning rod; 7. a disassembly and assembly mechanism; 71. a thread sleeve plate; 72. a connecting rod; 73. a fixed block; 74. a positive and negative screw rod; 75. a handle; 8. a limiting mechanism; 81. a pull rod; 82. a slide bar; 83. a spring; 84. an L-shaped rod piece; 85. a hexagonal limiting block; 86. a hexagonal limit groove; 9. lifting lugs.

Detailed Description

Please refer to fig. 1, fig. 2, fig. 3, an expansion pipe for repeated fracturing of pit shaft reconstruction, including pit shaft 1, the inside contact of pit shaft 1 has expansion rubber 3, fixedly connected with connecting plate 5 on the expansion rubber 3, sliding connection has body 2 on the expansion rubber 3, fixedly connected with lug 9 on the body 2, be provided with dismouting mechanism 7 on the body 2, be provided with stop gear 8 on the body 2, the contact has backup pad 4 on the body 2, the inside sliding sleeve of body 2 has locating lever 6, locating lever 6 and backup pad 4 fixed connection, backup pad 4 and pit shaft 1 fixed connection, expansion rubber 3 is the arc, connecting plate 5 is the arc, through setting up expansion rubber 3 to the arc, can increase sealed effect.

Referring to fig. 2, the dismounting mechanism 7 includes a threaded sleeve plate 71, a connecting rod 72, a fixing block 73, a positive and negative screw rod 74 and a handle 75, the positive and negative screw rod 74 is connected to the inside of the pipe body 2 through a bearing, the handle 75 is fixedly connected to the positive and negative screw rod 74, four threaded sleeve plates 71 are sleeved on the outer sides of the positive and negative screw rod 74 through threads, the threaded sleeve plates 71 on two sides of the positive and negative screw rod 74 can be driven to move reversely through rotation of the positive and negative screw rod 74, the connecting rod 72 is hinged to the threaded sleeve plates 71, the fixing block 73 is hinged to the connecting rod 72, the fixing block 73 is fixedly connected with the connecting plate 5, and the two threaded sleeve plates 71 move reversely, so that the expansion rubber 3 can be driven to move horizontally through the connecting rod 72.

Referring to fig. 2 and 4, the limiting mechanism 8 includes a pull rod 81, a slide rod 82, a spring 83, an L-shaped rod 84, a hexagonal limiting block 85, and a hexagonal limiting groove 86, wherein the hexagonal limiting groove 86 is provided in the handle 75, the hexagonal limiting block 85 is slidably connected in the hexagonal limiting groove 86, the slide rod 82 is fixedly connected to the hexagonal limiting block 85, the pull rod 81 is fixedly connected to the slide rod 82, the L-shaped rod 84 is slidably connected to the handle 75 in a sleeved manner on the outer side of the slide rod 82, the L-shaped rod 84 is connected to the pipe body 2 through a bearing, the hexagonal limiting block 85 is inserted into the hexagonal limiting groove 86, the handle 75 can be limited and fixed, the spring 83 is provided on the outer side of the slide rod 82, one end of the spring 83 is fixedly connected with the L-shaped rod 84, and the other end of the spring 83 is fixedly connected with the hexagonal limiting block 85, and the hexagonal limiting block 85 is pushed by the set spring 83, so that the hexagonal limiting block 85 is more stable when being limited.

Working principle: during the use, firstly, drive the body 2 through lug 9 and move perpendicularly, make locating lever 6 slip insert in the body 2 and make body 2 and backup pad 4 contact, afterwards clockwise rotation handle 75, handle 75 rotates and drives positive and negative lead screw 74 rotatory, because of the both ends and the thread bush 71 of positive and negative lead screw 74 pass through threaded connection, positive and negative lead screw 74 rotation can drive two thread bush 71 and draw close each other, thread bush 71 removes and can drive connecting rod 72 along the rotatory removal of pin joint, connecting rod 72 rotary motion can promote fixed block 73 horizontal migration through the pin joint, fixed block 73 horizontal migration can promote connecting plate 5 and inflation rubber 3 to the contact of wellbore 1 inner wall, when inflation rubber 3 and inner wall contact have slight extrusion, can accomplish the installation of body 2, because the sum of the outer arc length of two inflation rubber 3 of same level is less than the girth of wellbore 1 inner wall, there is the clearance between two inflation rubber 3 of level, so the clearance between two inflation rubber 3 of second floor is not with two inflation rubber 3 clearance in same vertical plane, and inflation rubber 3 can expand after meeting the inflation rubber 3 water, inflation rubber 3 can swell through the vertical direction and promote fixed block 73 horizontal migration through the pin joint, can form the sealed body 2 when the inflation rubber 3 is in contact with the inner wall 75, the body is dismantled and the sealed when the body is dismantled and the body is required to be removed, the body is removed through the sealed 3, the sealing mechanism is realized, the body is convenient for the body is removed through the sealing 9, can be removed through the rotation, and the body is convenient to be removed and the sealed through the sealing mechanism is convenient to be used to install and the handle 3. When the handle 75 needs to be limited, the pull rod 81 is pulled firstly, the slide rod 82 is driven to move through the pull rod 81, the slide rod 82 moves to drive the hexagonal limiting block 85 to move, the hexagonal limiting block 85 moves to squeeze the spring 83, when the hexagonal limiting block 85 moves to the inside of the L-shaped rod, the L-shaped rod piece 84 is rotated, the hexagonal limiting block 85 moves to the corresponding position of the hexagonal limiting groove 86, then the pull rod 81 is loosened, the spring 83 pushes the hexagonal limiting block 85 to reset, the hexagonal limiting block 85 is slid into the hexagonal limiting groove 86, limiting of the handle 75 can be completed, when limiting is needed to be removed, the hexagonal limiting block 85 is pulled to be moved out of the hexagonal limiting groove 86 through the pull rod 81, limiting of the handle 75 can be removed, the hexagonal limiting block 85 is pushed through the set spring 83, the hexagonal limiting block 85 is enabled to be more stable when limiting, and stability of the expansion pipe for re-manufacturing of the well 1 is increased through setting the limiting mechanism 8.

Claims (6)

1. The utility model provides an expansion pipe for repeated fracturing of pit shaft reconstruction, includes pit shaft (1), its characterized in that, the inside contact of pit shaft (1) has expansion rubber (3), fixedly connected with connecting plate (5) on expansion rubber (3), sliding connection has body (2) on expansion rubber (3), fixedly connected with lug (9) on body (2), be provided with dismouting mechanism (7) on body (2), be provided with stop gear (8) on body (2), the contact has backup pad (4) on body (2), locating lever (6) have been cup jointed in the inside slip of body (2), locating lever (6) and backup pad (4) fixed connection, backup pad (4) and pit shaft (1) fixed connection.

2. The expansion pipe for repeated fracturing for well bore reconstruction according to claim 1, wherein the expansion rubber (3) is arc-shaped, and the connecting plate (5) is arc-shaped.

3. The expansion pipe for repeated fracturing of well bore reconstruction according to claim 1, wherein the dismounting mechanism (7) comprises a threaded sleeve plate (71), a connecting rod (72), a fixed block (73), a positive and negative screw rod (74) and a handle (75), the positive and negative screw rod (74) is connected to the inside of the pipe body (2) through a bearing, the handle (75) is fixedly connected to the positive and negative screw rod (74), and four threaded sleeve plates (71) are sleeved on the outer side of the positive and negative screw rod (74) through threads.

4. An expansion pipe for repeated fracturing in a well bore reconstruction according to claim 3, wherein a connecting rod (72) is hinged on the threaded sleeve plate (71), a fixed block (73) is hinged on the connecting rod (72), and the fixed block (73) is fixedly connected with the connecting plate (5).

5. The expansion pipe for repeated fracturing of shaft reconstruction according to claim 3, wherein the limiting mechanism (8) comprises a pull rod (81), a slide rod (82), a spring (83), an L-shaped rod piece (84), a hexagonal limiting block (85) and a hexagonal limiting groove (86), the hexagonal limiting groove (86) is formed in the handle (75), the hexagonal limiting block (85) is slidably connected to the inside of the hexagonal limiting groove (86), the slide rod (82) is fixedly connected to the hexagonal limiting block (85), the pull rod (81) is fixedly connected to the slide rod (82), the L-shaped rod piece (84) is slidably sleeved on the outer side of the slide rod (82), the L-shaped rod piece (84) is slidably connected with the handle (75), and the L-shaped rod piece (84) is connected with the pipe body (2) through a bearing.

6. The expansion pipe for repeated fracturing of well bore reconstruction according to claim 5, wherein a spring (83) is arranged on the outer side of the sliding rod (82), one end of the spring (83) is fixedly connected with an L-shaped rod piece (84), and the other end of the spring (83) is fixedly connected with a hexagonal limiting block (85).