CN219061595U - Delay-soluble rupture disc type toe end sliding sleeve - Google Patents
Delay-soluble rupture disc type toe end sliding sleeve Download PDFInfo
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- CN219061595U CN219061595U CN202223253485.4U CN202223253485U CN219061595U CN 219061595 U CN219061595 U CN 219061595U CN 202223253485 U CN202223253485 U CN 202223253485U CN 219061595 U CN219061595 U CN 219061595U
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- sliding sleeve
- rupture disc
- outer cylinder
- delay
- sleeve body
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- 238000010008 shearing Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 22
- 230000007704 transition Effects 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 11
- 230000007246 mechanism Effects 0.000 abstract description 5
- 238000005422 blasting Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 4
- 238000005553 drilling Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 10
- 239000007788 liquid Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000002195 soluble material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000010775 animal oil Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000006184 cosolvent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a time-delay dissolvable rupture disc type toe end sliding sleeve, which comprises an outer cylinder and a sliding sleeve body arranged in the outer cylinder, wherein the sliding sleeve body is of a cylindrical structure, and an annular cavity is formed between the sliding sleeve body and the outer cylinder; the upper end of the outer cylinder is provided with an upper joint, and the lower end of the outer cylinder is provided with a lower joint; a first delay rupture disc and a second delay rupture disc are arranged between the sliding sleeve body and the outer cylinder; and a shearing pin is connected between the sliding sleeve body and the inner wall of the outer cylinder, wherein the shearing pin fixes the sliding sleeve body on the inner side of the outer cylinder. The utility model adopts a two-stage blasting two-stage delay mechanism, can simultaneously meet the requirements of high pressure test and well shaft delay pressure test during fracturing of the well drilling cross-well casing, can realize rapid fracturing of the rupture disc after being pressurized in the pipe column, has simple operation, is safe and reliable, and has important significance in reducing construction difficulty and cost for fracturing the split layer.
Description
Technical Field
The utility model relates to the technical field of underground operation of oil and gas fields, in particular to a delay soluble rupture disc type toe end sliding sleeve.
Background
The toe end sliding sleeve tool can be opened only at a well mouth without changing the existing well cementation process, perforation or other tool operations are not needed after the well cementation cement paste is solidified, and other downhole tools such as fracturing operations, auxiliary logging instruments and the like can be directly put into the well bottom. The method is mainly applied to ball-throwing fracturing of the open hole multistage sliding sleeve, in order to ensure pumping channels during ball throwing, a toe end sliding sleeve is required to be installed at the tail end of a well completion sleeve when an open hole packer is used for well completion, and a pin differential pressure principle is adopted for opening the sliding sleeve.
At present, as shale gas exploration and development areas are continuously expanded, deep wells and high-temperature wells are more and more, horizontal sections are longer and more, complex well types are also increased gradually, the well completion mode is changed for shale gas development, the well completion is converted into well cementation well completion by open hole well completion, most of the existing toe end sliding sleeves are opened in a rupture mode by a rupture disc, most of the existing toe end sliding sleeves do not have a time delay function, the material technology is not mature, the on-site application opening success rate is low, the risk of leading the toe end sliding sleeves to fail exists, and the requirement of casing pressure test of an oil-gas field cannot be met.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a delay-soluble rupture disc type toe end sliding sleeve, which solves the problems that in the prior art, the toe end sliding sleeve is difficult to control delay time and has low success rate of opening the toe end sliding sleeve in the ultra-deep well full-drift diameter well cementation state.
The technical scheme for solving the technical problems is as follows:
the time-delay dissolvable rupture disc type toe end sliding sleeve comprises an outer cylinder and a sliding sleeve body arranged in the outer cylinder, wherein the sliding sleeve body is of a cylindrical structure, the center of the sliding sleeve body is a through runner, and an annular cavity is formed between the sliding sleeve body and the outer cylinder; the upper end of the outer cylinder is provided with an upper joint, and the lower end of the outer cylinder is provided with a lower joint; a first delay rupture disc and a second delay rupture disc are arranged between the sliding sleeve body and the outer barrel, wherein the first delay rupture disc and the second delay rupture disc are arranged at intervals along the axial direction of the sliding sleeve body; the first delay rupture disc and the second delay rupture disc are made of magnesium-aluminum alloy materials; and a shearing pin is connected between the sliding sleeve body and the inner wall of the outer cylinder, wherein the shearing pin fixes the sliding sleeve body on the inner side of the outer cylinder.
Preferably, the side wall of the outer cylinder is provided with an outer through hole, and the inner wall of the outer through hole is provided with a rectangular groove; the axis of the outer cylinder is coincident with the axis of the sliding sleeve body, the sliding sleeve body is blocked at the outer through hole, and the sliding sleeve body moves along the axis direction of the outer cylinder.
Preferably, the upper end of the outer cylinder is connected with the upper joint through threads, and the side part of the outer cylinder is fixedly connected with the upper joint through a first fastening screw; the lower end of the outer cylinder is connected with the lower joint through threads, and the lateral part of the outer cylinder is fixedly connected with the lower joint through a second fastening screw.
Preferably, the upper end of the sliding sleeve body is arranged on the inner wall of the upper joint, and the lower end of the sliding sleeve body is arranged on the outer wall of the lower joint.
Preferably, a first sealing ring is arranged between the outer wall of the upper joint and the inner wall of the outer cylinder, and a locking ring and a second sealing ring are arranged between the inner wall of the upper joint and the outer wall of the sliding sleeve body.
Preferably, a third sealing ring is arranged between the outer wall of the lower joint and the inner wall of the outer cylinder, a fourth sealing ring is arranged between the outer wall of the lower joint and the inner wall of the sliding sleeve body, and a fifth sealing ring is arranged between the outer wall of the sliding sleeve body and the inner wall of the outer cylinder.
Preferably, the first delay rupture disc is in clearance fit or transition fit with the inner wall of the outer cylinder, and a sixth sealing ring is arranged between the first delay rupture disc and the outer cylinder.
Preferably, the second delay rupture disc is in clearance fit or transition fit with the inner wall of the outer cylinder, and a seventh sealing ring is arranged between the second delay rupture disc and the outer cylinder.
Compared with the prior art, the technical scheme of the utility model has the following beneficial technical effects: the magnesium-aluminum alloy which can be dissolved in dilute acid is used as a delay means, is not influenced by underground high temperature, and has the advantages of simplicity and convenience in processing and assembly, easiness in controlling delay time and the like. The two-stage blasting two-stage delay mechanism is adopted, the requirements of high pressure test and well shaft delay pressure test during fracturing of the well drilling cross-well casing can be met simultaneously, quick fracturing of the rupture disc can be realized after the pressure in the pipe column is applied, the operation is simple, safety and reliability are realized, and the method has important significance in reducing construction difficulty and fracturing cost for fracturing the split layers.
Drawings
FIG. 1 is a schematic view of the construction of a time-lapse dissolvable rupture disc toe end sliding sleeve of the present utility model;
FIG. 2 is a schematic structural view of a sliding sleeve body according to the present utility model;
fig. 3 is a schematic structural view of the outer tub of the present utility model.
Wherein: 1. an outer cylinder; 2. a sliding sleeve body; 3. a cavity; 4. an upper joint; 5. a lower joint; 6. a first time-lapse rupture disc; 7. a second time delay rupture disc; 8. shearing pins; 9. an outer through hole; 10. rectangular grooves; 11a, a first fastening screw; 11b, a second fastening screw; 12. a first seal ring; 13. a locking ring; 14. a second seal ring; 15. a third seal ring; 16. a fourth seal ring; 17. a fifth seal ring; 18. a sixth seal ring; 19. and a seventh sealing ring.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 to 3 in combination, a time-delay dissolvable rupture disc type toe end sliding sleeve comprises an outer cylinder 1 and a sliding sleeve body 2 arranged in the outer cylinder 1, wherein the sliding sleeve body 2 is of a cylindrical structure, the center of the sliding sleeve body 2 is a through runner, and a cavity 3 is formed between the sliding sleeve body 2 and the outer cylinder 1; the length of the maximum outer diameter section of the sliding sleeve body 2 is short and is not more than 700mm, the risk of blocking along with the running of the sleeve is small, and the well cementation quality is not influenced; the upper end of the outer cylinder 1 is provided with an upper joint 4, and the lower end of the outer cylinder 1 is provided with a lower joint 5; a first delay rupture disc 6 and a second delay rupture disc 7 are arranged between the sliding sleeve body 2 and the outer barrel 1, wherein the first delay rupture disc 6 and the second delay rupture disc 7 are arranged at intervals along the axial direction of the sliding sleeve body 2.
Specifically, the delay-dissolvable rupture disc type toe end sliding sleeve is mainly used for opening a first-stage fracturing channel and can be used as a subsequent pumping channel, meanwhile, the pressure integrity of the sleeve can be tested before opening, and the requirements of high pressure test and well delay pressure test during fracturing of the well drilling cross-well sleeve can be met simultaneously by adopting a two-stage blasting two-stage delay mechanism. The magnitude of the opening absolute pressure of the sliding sleeve body 2 is controlled by a first time delay rupture disc 6 and a second time delay rupture disc 7, the first time delay rupture disc 6 and the second time delay rupture disc 7 being rupturable at rated pressures. Wherein the pressure of the first time delay rupture disc 6 is 125MPa (which can be adjusted according to the field requirement), and the time delay time is 48-72 hours.
Specifically, the inner diameter of the delay dissolvable rupture disc type toe end sliding sleeve is 114.3mm, is consistent with the inner diameter of a well completion sleeve used in each area at present, avoids the problem that the first section cannot be fractured because the sliding sleeve cannot be opened to discard the fracturing of the first section, and simultaneously solves the problem that the first section cannot be fractured because cement is returned to a plug to bury the toe end sliding sleeve.
Specifically, the first delay rupture disc 6 and the second delay rupture disc 7 are made of magnesium-aluminum alloy materials; a shear pin 8 is connected between the sliding sleeve body 2 and the inner wall of the outer cylinder 1, wherein the shear pin 8 fixes the sliding sleeve body 2 inside the outer cylinder 1. By changing the time delay mechanism from the past hydraulic throttle type/mechanical track groove type to the rapid soluble material type, once the rupture disc is opened, the soluble material is in contact with the cosolvent instantly, the dissolution is completed within the designed time, and a pressure transmission channel is established; the current delay time is adjustable and controllable within the range of 30min-480min or even longer, so that the problem that the unexpected opening of a high-pressure fracture disc during well cementation influences the well cementation quality is effectively avoided.
Specifically, the side wall of the outer cylinder 1 is provided with an outer through hole 9, wherein the inner wall of the outer through hole 9 is provided with a rectangular groove 10; the axis of the outer cylinder 1 is coincident with the axis of the sliding sleeve body 2, wherein the sliding sleeve body 2 is blocked at the position of the outer through hole 9, and the sliding sleeve body 2 moves along the axis direction of the outer cylinder 1. The outer through hole 9 is internally provided with a plug, wherein the plug is a water-insoluble paste, such as yellow grease or animal oil, and the like, and the plug can be used for protecting the smooth sliding of the sliding sleeve body 2 and preventing solid particulate matters such as well cementation cement and the like from entering the runner.
Specifically, the upper end of the outer cylinder 1 is connected with the upper joint 4 through threads, wherein a first fastening screw 11a is arranged on the side part of the outer cylinder 1, and the first fastening screw 11a penetrates through the side wall of the outer cylinder 1 and is fixedly connected with the upper joint 4; the lower end of the outer cylinder 1 is connected with the lower joint 5 through threads, wherein a second fastening screw 11b is arranged on the side part of the outer cylinder 1, and the second fastening screw 11b penetrates through the side wall of the outer cylinder 1 and is fixedly connected with the lower joint 5.
Specifically, the upper end of the sliding sleeve body 2 is arranged at the inner side of the upper joint 4, wherein the lower end of the sliding sleeve body 2 is sleeved at the outer side of the lower joint 5; a first sealing ring 12 is arranged between the outer wall of the upper joint 4 and the inner wall of the outer cylinder 1, and a locking ring 13 and a second sealing ring 14 are arranged between the inner wall of the upper joint 4 and the outer wall of the sliding sleeve body 2; a third sealing ring 15 is arranged between the outer wall of the lower joint 5 and the inner wall of the outer cylinder 1, a fourth sealing ring 16 is arranged between the outer wall of the lower joint 5 and the inner wall of the sliding sleeve body 2, and a fifth sealing ring 17 is arranged between the outer wall of the sliding sleeve body 2 and the inner wall of the outer cylinder 1.
Specifically, the first delay rupture disc 6 is in clearance fit or transition fit with the inner wall of the outer cylinder 1, wherein a sixth sealing ring 18 is arranged between the first delay rupture disc 6 and the outer cylinder 1; the second time delay rupture disc 7 is in clearance fit or transition fit with the inner wall of the outer cylinder 1, wherein a seventh sealing ring 19 is arranged between the second time delay rupture disc 7 and the outer cylinder 1.
Working principle: when the oil and gas well completion enters a casing running stage, the upper connector 4 and the lower connector 5 of the delay soluble rupture disc type toe end sliding sleeve are respectively connected with a technical casing, and the upper connector and the lower connector are put into a preset position in the well along with the casing, and the opening pressure of the sliding sleeve body 2 depends on the pipe column fluid pressure difference at the position and is irrelevant to the stratum pressure. And then the oil well is cemented and well cemented according to the normal steps. When the layered fracturing is required, the pressure is applied from the wellhead into the casing, and the pressure fluid enters the runner and the lower joint 5. When the pressure of the pressure liquid exceeds the designed breaking pressure of the first time delay rupture disc 6, the first time delay rupture disc 6 is broken (namely ruptured), and after the pressure liquid reacts with the first time delay rupture disc 6, the pressure liquid passes through the first time delay rupture disc 6 and enters the cavity 3 between the sliding sleeve body 2 and the outer barrel 1; at this time, the pressure can be continuously increased to perform the pressure test operation of the sleeve, meanwhile, the pressure liquid entering the cavity 3 reacts with the second delay rupture disc 7, the second delay rupture disc 7 starts to dissolve, after a period of time delay, the second delay rupture disc 7 is dissolved, the pressure liquid pushes the sliding sleeve body 2 to move upwards, when the sliding sleeve body 2 moves upwards to a certain position, the sleeve test high pressure requirement is completed, after the delay time is reached, the sliding sleeve body 2 slides and opens the fracturing channel, and at this time, the fracturing operation of the toe end can be performed.
To sum up: the magnesium-aluminum alloy which can be dissolved in dilute acid is used as a delay means, is not influenced by underground high temperature, and has the advantages of simplicity and convenience in processing and assembly, easiness in controlling delay time and the like. The two-stage blasting two-stage delay mechanism is adopted, the requirements of high pressure test and well shaft delay pressure test during fracturing of the well drilling cross-well casing can be met simultaneously, quick fracturing of the rupture disc can be realized after the pressure in the pipe column is applied, the operation is simple, safety and reliability are realized, and the method has important significance in reducing construction difficulty and fracturing cost for fracturing the split layers.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a time delay soluble rupture disc formula toe end sliding sleeve, includes urceolus (1) and sets up sliding sleeve body (2) in urceolus (1), sliding sleeve body (2) are the drum structure, wherein sliding sleeve body (2) center is the runner that runs through, forms annular cavity (3) between this sliding sleeve body (2) and urceolus (1); an upper joint (4) is arranged at the upper end of the outer barrel (1), and a lower joint (5) is arranged at the lower end of the outer barrel (1); the novel sliding sleeve is characterized in that a first delay rupture disc (6) and a second delay rupture disc (7) are arranged between the sliding sleeve body (2) and the outer barrel (1), and the first delay rupture disc (6) and the second delay rupture disc (7) are arranged at intervals along the axial direction of the sliding sleeve body (2); the first delay rupture disc (6) and the second delay rupture disc (7) are made of magnesium-aluminum alloy materials; a shearing pin (8) is connected between the sliding sleeve body (2) and the inner wall of the outer barrel (1), wherein the shearing pin (8) fixes the sliding sleeve body (2) at the inner side of the outer barrel (1).
2. The time-delay dissolvable rupture disc type toe end sliding sleeve according to claim 1, wherein an outer through hole (9) is formed in the side wall of the outer cylinder (1), and a rectangular groove (10) is formed in the inner wall of the outer through hole (9); the axis of the outer cylinder (1) is coincident with the axis of the sliding sleeve body (2), wherein the sliding sleeve body (2) is blocked at the position of the outer through hole (9), and the sliding sleeve body (2) moves along the axis direction of the outer cylinder (1).
3. The time-delay dissolvable rupture disc toe end sliding sleeve according to claim 2, wherein the upper end of the outer cylinder (1) is connected with the upper joint (4) through threads, and wherein the side part of the outer cylinder (1) is fixedly connected with the upper joint (4) through a first fastening screw (11 a); the lower end of the outer cylinder (1) is connected with the lower joint (5) through threads, wherein the side part of the outer cylinder (1) is fixedly connected with the lower joint (5) through a second fastening screw (11 b).
4. The time-delay dissolvable rupture disc toe end sliding sleeve according to claim 1, wherein the upper end of the sliding sleeve body (2) is arranged inside the upper joint (4), and wherein the lower end of the sliding sleeve body (2) is sleeved outside the lower joint (5).
5. The time-lapse dissolvable rupture disc toe end sliding sleeve according to claim 4, wherein a first sealing ring (12) is arranged between the outer wall of the upper joint (4) and the inner wall of the outer cylinder (1), and wherein a locking ring (13) and a second sealing ring (14) are arranged between the inner wall of the upper joint (4) and the outer wall of the sliding sleeve body (2).
6. The time-delay dissolvable rupture disc toe end sliding sleeve according to claim 5, wherein a third sealing ring (15) is arranged between the outer wall of the lower joint (5) and the inner wall of the outer cylinder (1), a fourth sealing ring (16) is arranged between the outer wall of the lower joint (5) and the inner wall of the sliding sleeve body (2), and a fifth sealing ring (17) is arranged between the outer wall of the sliding sleeve body (2) and the inner wall of the outer cylinder (1).
7. A time delay dissolvable rupture disc toe end sliding sleeve according to claim 1, characterized in that said first time delay rupture disc (6) is in clearance fit or transition fit with the inner wall of the outer cylinder (1), wherein a sixth sealing ring (18) is arranged between the first time delay rupture disc (6) and the outer cylinder (1).
8. A time delay dissolvable rupture disc toe end sliding sleeve according to claim 1, characterized in that said second time delay rupture disc (7) is in clearance fit or transition fit with the inner wall of the outer cylinder (1), wherein a seventh sealing ring (19) is arranged between the second time delay rupture disc (7) and the outer cylinder (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223253485.4U CN219061595U (en) | 2022-12-06 | 2022-12-06 | Delay-soluble rupture disc type toe end sliding sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223253485.4U CN219061595U (en) | 2022-12-06 | 2022-12-06 | Delay-soluble rupture disc type toe end sliding sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219061595U true CN219061595U (en) | 2023-05-23 |
Family
ID=86345534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223253485.4U Active CN219061595U (en) | 2022-12-06 | 2022-12-06 | Delay-soluble rupture disc type toe end sliding sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219061595U (en) |
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2022
- 2022-12-06 CN CN202223253485.4U patent/CN219061595U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240304 Address after: Room 2007, 2nd Floor, Building 3, No. 1 Hongda Road, North Exit of West Ring Road, Chengbei Street, Changping District, Beijing, 100000 Patentee after: Levin Kaibo International Energy Technology (Beijing) Co.,Ltd. Country or region after: China Patentee after: Dezhou Jingmei Petroleum Machinery Co.,Ltd. Address before: 102200 room 2006, 2f, building 3, No. 1, Hongda Road, Beikou, West Ring Road, Chengbei street, Changping District, Beijing Patentee before: Levin Kaibo International Energy Technology (Beijing) Co.,Ltd. Country or region before: China |
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| TR01 | Transfer of patent right |