CN220645895U - Double-layer groove sleeve patching device - Google Patents
Double-layer groove sleeve patching device Download PDFInfo
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- CN220645895U CN220645895U CN202322040423.3U CN202322040423U CN220645895U CN 220645895 U CN220645895 U CN 220645895U CN 202322040423 U CN202322040423 U CN 202322040423U CN 220645895 U CN220645895 U CN 220645895U
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- rotating shaft
- expansion sleeve
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- 238000007789 sealing Methods 0.000 claims abstract description 46
- 230000000694 effects Effects 0.000 description 6
- 230000005489 elastic deformation Effects 0.000 description 6
- 239000004033 plastic Substances 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
A double-layer groove sleeve patching device is suitable for patching operation after local fracture of a sleeve wall under a well. The device comprises: the hydraulic anchor comprises a rotating motor, a hydraulic anchor, a double-layer groove rotating shaft, a first cylindrical sliding block set, a second cylindrical sliding block set, a first-stage sealing ring, a second-stage sealing ring, a first expansion sleeve and a second expansion sleeve. The hydraulic anchor plays a role in fixation, under the action of the rotating motor, the double-layer groove rotating shaft starts to rotate, the first cylindrical sliding block set and the second cylindrical sliding block set are driven to move in the spiral groove of the double-layer groove rotating shaft until the first cylindrical sliding block set and the second cylindrical sliding block set are extruded and plastically deformed with the wall surface of the sleeve after the stroke of the first cylindrical sliding block set and the second cylindrical sliding block set in the spiral groove of the double-layer groove rotating shaft is finished, and the first expansion sleeve and the second expansion sleeve are fixed on the wall surface of the sleeve to complete the patch operation.
Description
Technical Field
The utility model belongs to the field of downhole casing repair, and is suitable for repair operation after local fracture of a downhole casing wall.
Background
In the drilling operation process, the casing is often broken due to stratum movement and stratum extrusion, and high-mineral stratum water after the casing is broken can enter the casing, so that corrosion and pollution are caused to internal oil extraction and exploration equipment, and even normal oil extraction of an oil field is seriously affected, so that huge economic loss is caused.
The current common patching modes comprise corrugated pipe patching, detonation patching, expansion pipe patching and the like, wherein the expansion pipe patching is a mainstream patching mode due to simple operation and low cost. In a hydraulic traction type expansion casing patch device (patent number: 202110555492.0), an expansion patch solution based on hydraulic traction is provided, and the expansion patch operation is realized by controlling the hydraulic pressure through a liquid one-way valve; in a casing patch device (patent number: 201820399397. X), an anchoring patch device is proposed based on a sliding sleeve, a limiting ring and a locking mechanism, and expansion patch operation is realized through reasonable cone angle design. The patch mode has good patch effect when the damage of the casing wall surface is large, but because the patch expansion sleeve is long in size and most of hydraulic equipment needs to be used as technical support, the patch cost is high, the required pulling force after patch is large, and the patch mode is not suitable for patch operation of small-range damage of the casing wall surface.
Disclosure of Invention
The utility model aims to solve the technical problems that: the existing sleeve patching mode aims at the problems of high cost and high pulling-out force of small-range wall surface damage patching.
The technical scheme adopted for solving the technical problems is as follows:
a dual-groove sleeve patch device, the device comprising: the hydraulic anchor comprises a rotating motor, a hydraulic anchor, a double-layer groove rotating shaft, a first cylindrical sliding block set, a second cylindrical sliding block set, a first-stage sealing ring, a second-stage sealing ring, a first expansion sleeve and a second expansion sleeve.
Connection between the parts of the device:
each cylindrical sliding block of the second cylindrical sliding block set is placed in the lower groove of the double-layer groove rotating shaft one by one, one cylindrical sliding block is placed in each groove until the lower groove of the double-layer groove rotating shaft is filled, the second-stage sealing ring is sleeved in the sealing ring groove of the second expansion sleeve, the second expansion sleeve is sleeved on the outer side of the double-layer groove rotating shaft from top to bottom, the positioning boss of the second expansion sleeve is clamped on the second cylindrical sliding block set of the lower groove of the double-layer groove rotating shaft, each cylindrical sliding block of the first cylindrical sliding block set is placed in the upper groove of the double-layer groove rotating shaft one by one, one cylindrical sliding block is placed in each groove until the upper groove of the double-layer groove rotating shaft is filled, the first-stage sealing ring is sleeved in the sealing ring groove of the first expansion sleeve, the first expansion sleeve is sleeved on the outer side of the double-layer groove rotating shaft from top to bottom, the positioning boss of the first expansion sleeve is clamped on the first cylindrical sliding block set of the upper groove of the double-layer groove rotating shaft, the joint of the first expansion sleeve and the second expansion sleeve is welded after the assembly is completed, and then the upper groove of the double-layer rotating shaft is connected with the rotating shaft through the rotating shaft.
The cylindrical surface of the double-layer groove rotating shaft comprises an upper layer of spiral groove and a lower layer of spiral groove, and the radial depth of each spiral groove is gradually increased from top to bottom;
the first cylindrical sliding block group comprises a plurality of cylindrical sliding blocks, and the bottom surface of each cylindrical sliding block is ensured to be contacted with the bottom surface of the spiral groove of the double-layer groove rotating shaft during assembly;
the second cylindrical sliding block group comprises a plurality of cylindrical sliding blocks, and the bottom surface of each cylindrical sliding block is ensured to be contacted with the bottom surface of the spiral groove of the double-layer groove rotating shaft during assembly;
the first-stage sealing ring comprises a plurality of O-shaped rubber sealing rings, and the number of the O-shaped rubber sealing rings is the same as that of the multistage sealing ring grooves of the first expansion sleeve;
the second-stage sealing ring comprises a plurality of O-shaped rubber sealing rings, and the number of the O-shaped rubber sealing rings is the same as that of the multistage sealing ring grooves of the second expansion sleeve;
the inner side of the upper part of the first expansion sleeve comprises a positioning boss, and the outer side of the upper part of the first expansion sleeve comprises a multi-stage sealing ring groove, so that the sealing effect after repairing is ensured;
the inner side of the lower part of the second expansion sleeve comprises a positioning boss, and the outer side of the second expansion sleeve comprises a multi-stage sealing ring groove, so that the sealing effect after repairing is ensured;
the device is placed at a sleeve leakage position, under the action of a hydraulic anchor, the whole double-layer groove sleeve repairing device is fixed on the sleeve wall surface, under the action of a rotating motor, the double-layer groove rotating shaft starts to rotate, the first cylindrical sliding block set and the second cylindrical sliding block set are driven to move in the spiral groove of the double-layer groove rotating shaft, the radial depth of the spiral groove gradually increases from top to bottom, according to the principle of a wedge mechanism, the first expansion sleeve and the second expansion sleeve are gradually expanded to generate elastic deformation, along with the continuous rotation of the double-layer groove rotating shaft, the elastic deformation of the first expansion sleeve and the second expansion sleeve gradually increases until the double-layer groove sleeve is contacted with the sleeve wall surface, at the moment, the double-layer groove rotating shaft continuously rotates, the first expansion sleeve and the second expansion sleeve are extruded and deformed with the sleeve wall surface, the elastic deformation of the first expansion sleeve and the second expansion sleeve gradually become plastic deformation until the first cylindrical sliding block set and the second cylindrical sliding block set return to the initial position of the double-layer groove rotating shaft through the reverse rotation of the rotating motor after the stroke of the double-layer groove rotating shaft is finished, and the first expansion sleeve and the second expansion sleeve is extruded and deformed on the sleeve wall surface at the moment.
The utility model has the beneficial effects that:
the device utilizes the voussoir principle, because the axial dimensions of first cover that expands and second cover are little, the subsidy operation of very suitable sleeve pipe small area leak, in addition, first cylinder slider group and second cylinder slider group retract double-deck recess pivot's inside under the effect of rotating electrical machines after the subsidy is accomplished, has reduced whole diameter range, the pull-out operation after the subsidy of being convenient for has greatly reduced the pulling-out power.
Drawings
FIG. 1 is a double-layer grooved sleeve patch device;
in fig. 1: the hydraulic anchor comprises a rotating motor 1, a hydraulic anchor 2, a double-layer groove rotating shaft 3, a first cylindrical sliding block set 4-1, a second cylindrical sliding block set 4-2, a first-stage sealing ring 5-1, a second-stage sealing ring 5-2, a first expansion sleeve 6-1 and a second expansion sleeve 6-2.
FIG. 2 is a partial cross-sectional view taken along section A-A of FIG. 1;
FIG. 3 is a welded overall view of the first expansion shell 6-1 and the second expansion shell 6-2;
fig. 4 is a partial enlarged view at B in fig. 1.
Detailed Description
The utility model will be further described with reference to the accompanying drawings, in which:
a dual-groove sleeve patch device, the device comprising: the hydraulic anchor comprises a rotating motor 1, a hydraulic anchor 2, a double-layer groove rotating shaft 3, a first cylindrical sliding block set 4-1, a second cylindrical sliding block set 4-2, a first-stage sealing ring 5-1, a second-stage sealing ring 5-2, a first expansion sleeve 6-1 and a second expansion sleeve 6-2.
Connection between the parts of the device:
placing the cylindrical sliders of the second cylindrical slider group 4-2 into the lower grooves of the double-layer groove rotating shaft 3 one by one, placing one cylindrical slider in each groove until the lower grooves of the double-layer groove rotating shaft are filled, sleeving the second-stage sealing ring 5-2 into the sealing ring grooves of the first expansion sleeve 6-2, sleeving the second expansion sleeve 6-2 on the outer side of the double-layer groove rotating shaft 3 from top to bottom, ensuring that the positioning boss of the second expansion sleeve 6-2 is clamped on the second cylindrical slider group 4-2 of the lower grooves of the double-layer groove rotating shaft 3, placing the cylindrical sliders of the first cylindrical slider group 4-1 into the upper grooves of the double-layer groove rotating shaft one by one, placing one cylindrical slider in each groove until the upper grooves of the double-layer groove rotating shaft 3 are filled, sleeving the first-stage sealing ring 5-1 into the sealing ring grooves of the first expansion sleeve 6-1, sleeving the first expansion sleeve 6-1 on the outer side of the double-layer groove rotating shaft 3 from top to bottom, ensuring that the positioning boss of the first expansion sleeve 6-1 is clamped on the second cylindrical slider group 4-2 of the double-layer groove rotating shaft 3, and then connecting the first expansion sleeve 6-1 with the first expansion sleeve 2 through the first expansion sleeve 2 and the double-layer groove rotating shaft 3, and finishing the assembly of the first expansion sleeve 2 as shown in the figure 3-2.
The cylindrical surface of the double-layer groove rotating shaft 3 comprises an upper layer of spiral groove and a lower layer of spiral groove, and the radial depth of each spiral groove is gradually increased from top to bottom as shown in fig. 2;
the first cylindrical sliding block set 5-1 comprises a plurality of cylindrical sliding blocks, and the bottom surface of each cylindrical sliding block is ensured to be contacted with the bottom surface of the spiral groove of the double-layer groove rotating shaft 3 during assembly;
the second cylindrical sliding block set 5-2 comprises a plurality of cylindrical sliding blocks, and the bottom surface of each cylindrical sliding block is ensured to be contacted with the bottom surface of the spiral groove of the double-layer groove rotating shaft 3 during assembly;
the first-stage sealing ring 5-1 comprises a plurality of O-shaped rubber sealing rings, and the number of the O-shaped rubber sealing rings is the same as that of the multistage sealing ring grooves of the first expansion sleeve;
the second-stage sealing ring 5-2 comprises a plurality of O-shaped rubber sealing rings, and the number of the O-shaped rubber sealing rings is the same as that of the multistage sealing ring grooves of the second expansion sleeve, as shown in fig. 4;
the inner side of the upper part of the first expansion sleeve 6-1 comprises a positioning boss, and the outer side of the first expansion sleeve comprises a multi-stage sealing ring groove, so that the sealing effect after repairing is ensured;
the inner side of the lower part of the second expansion sleeve 6-2 comprises a positioning boss, the outer side of the second expansion sleeve comprises a multi-stage sealing ring groove, and the sealing effect after repairing is ensured, as shown in figure 3;
the device is put at a sleeve leakage position, the whole double-layer groove sleeve patching device is fixed on the sleeve wall surface under the action of a hydraulic anchor 2, a double-layer groove rotating shaft 3 starts to rotate under the action of a rotating motor 1 to drive a first cylindrical sliding block group 4-1 and a second cylindrical sliding block group 4-2 to move in a spiral groove of the double-layer groove rotating shaft 3, as the radial depth of the spiral groove is gradually increased from top to bottom, as shown in figure 2, according to the principle of a wedge mechanism, each sliding block of the first cylindrical sliding block group 4-1 and the second cylindrical sliding block group 4-2 moves from a solid line position to a broken line position in the figure, and as the diameter of a circle determined by the first cylindrical sliding block group 4-1 and the second cylindrical sliding block group 4-2 is continuously increased, a first expansion sleeve 6-1 and a second expansion sleeve 6-2 are gradually expanded, generating elastic deformation, along with the continuous rotation of the double-layer groove rotating shaft 3, the elastic deformation of the first expansion sleeve 6-1 and the second expansion sleeve 6-2 is gradually increased until the double-layer groove rotating shaft 3 is contacted with the casing wall surface, at the moment, the double-layer groove rotating shaft 3 continuously rotates, the first expansion sleeve 6-1 and the second expansion sleeve 6-2 are extruded and deformed with the casing wall surface, the elastic deformation of the first expansion sleeve 6-1 and the second expansion sleeve 6-2 is gradually changed into plastic deformation until the first cylindrical sliding block set 4-1 and the second cylindrical sliding block set 4-2 return to the initial position of the double-layer groove rotating shaft after the reverse rotation of the rotating motor 1 is carried out, the first cylindrical sliding block set 4-1 and the second cylindrical sliding block set 4-2 are separated from the first expansion sleeve 6-1 and the second expansion sleeve 6-2 respectively, at this time, the first expansion sleeve 6-1 and the second expansion sleeve 6-2 are fixed on the wall surface of the casing by extrusion and plastic deformation of the first expansion sleeve and the second expansion sleeve, so that the patch operation is completed.
The device utilizes the wedge principle, because the axial dimension of the first expansion sleeve 6-1 and the second expansion sleeve 6-2 is small, the device is very suitable for the patch operation of the small-area leak of the sleeve, in addition, after patch is finished, the first cylindrical sliding block set 4-1 and the second cylindrical sliding block set 4-2 retract into the double-layer groove rotating shaft under the action of the rotating motor 1, the whole diameter range is reduced, the pulling operation after patch is convenient, and the pulling force is greatly reduced.
Claims (1)
1. The utility model provides a double-deck recess sleeve pipe patch device which characterized in that:
the device comprises: the hydraulic anchor comprises a rotating motor (1), a hydraulic anchor (2), a double-layer groove rotating shaft (3), a first cylindrical sliding block set (4-1), a second cylindrical sliding block set (4-2), a first-stage sealing ring (5-1), a second-stage sealing ring (5-2), a first expansion sleeve (6-1) and a second expansion sleeve (6-2);
each cylindrical sliding block of the second cylindrical sliding block set (4-2) is placed in the lower groove of the double-layer groove rotating shaft (3) one by one, each groove is provided with one cylindrical sliding block until the lower groove of the double-layer groove rotating shaft is filled, a second-stage sealing ring (5-2) is sleeved in the sealing ring groove of the second expansion sleeve (6-2), the second expansion sleeve (6-2) is sleeved on the outer side of the double-layer groove rotating shaft (3) from top to bottom, the positioning boss of the second expansion sleeve (6-2) is clamped on the second cylindrical sliding block set (4-2) of the lower groove of the double-layer groove rotating shaft (3), each cylindrical sliding block of the first cylindrical sliding block set (4-1) is placed in the upper groove of the double-layer groove rotating shaft one by one, each groove is provided with one cylindrical sliding block until the upper groove of the double-layer groove rotating shaft (3) is filled, the first-stage sealing ring (5-1) is sleeved in the sealing ring groove of the first expansion sleeve (6-1), the first expansion sleeve (6-1) is clamped on the outer side of the double-layer groove rotating shaft (3) from top to bottom, the positioning boss of the first expansion sleeve (6-1) is clamped on the outer side of the double-layer groove rotating shaft (6-1), the positioning boss is welded on the first expansion sleeve (6-1) and the first expansion sleeve (6-1) is welded on the outer side of the upper groove (6-1), then the upper part of the double-layer groove rotating shaft (3) is connected with the rotating motor (1) through the hydraulic anchor (2);
the cylindrical surface of the double-layer groove rotating shaft (3) comprises an upper layer of spiral groove and a lower layer of spiral groove, and the radial depth of each spiral groove is gradually increased from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322040423.3U CN220645895U (en) | 2023-08-01 | 2023-08-01 | Double-layer groove sleeve patching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322040423.3U CN220645895U (en) | 2023-08-01 | 2023-08-01 | Double-layer groove sleeve patching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220645895U true CN220645895U (en) | 2024-03-22 |
Family
ID=90286864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322040423.3U Active CN220645895U (en) | 2023-08-01 | 2023-08-01 | Double-layer groove sleeve patching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220645895U (en) |
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2023
- 2023-08-01 CN CN202322040423.3U patent/CN220645895U/en active Active
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