CN112267849A - Rupture disc type toe end sliding sleeve and using method thereof - Google Patents
Rupture disc type toe end sliding sleeve and using method thereof Download PDFInfo
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- CN112267849A CN112267849A CN202011207274.XA CN202011207274A CN112267849A CN 112267849 A CN112267849 A CN 112267849A CN 202011207274 A CN202011207274 A CN 202011207274A CN 112267849 A CN112267849 A CN 112267849A
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- Prior art keywords
- sliding sleeve
- strong acid
- rupture disc
- rupture
- disc
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000002253 acid Substances 0.000 claims abstract description 51
- 239000007787 solid Substances 0.000 claims abstract description 41
- 239000004568 cement Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000002955 isolation Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 239000004519 grease Substances 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Safety Valves (AREA)
Abstract
The invention belongs to the field of downhole operation tools of oil and gas fields, and particularly relates to a rupture disc type toe end sliding sleeve and a using method thereof. A burst disc toe sleeve comprising: the sliding sleeve body, the sliding sleeve body is cylindrical structure, and its center is the runner that runs through, the last port of sliding sleeve body is provided with the top connection, and the bottom port is provided with the lower clutch, and middle part circumference is provided with a plurality of cylindrical holes, cylindrical hole with runner UNICOM, cylindrical hole installs rupture piece, adjustable ring and division board from inside to outside in proper order, the inside cavity of adjustable ring, with rupture piece and division board form the enclosure space, are equipped with solid strong acid carrier in the enclosure space, be equipped with solid strong acid in the solid strong acid carrier. According to the invention, the solid strong acid carrier is placed in the space formed by the adjusting ring, the rupture disc and the isolating plate, and after the rupture disc is ruptured, the solid strong acid rapidly reacts with water to generate strong acid, so that the cement sheath is corroded, and the connectivity of the sliding sleeve and the stratum is improved.
Description
Technical Field
The invention belongs to the field of downhole operation tools of oil and gas fields, and particularly relates to a rupture disc type toe end sliding sleeve and a using method thereof.
Background
The toe end sliding sleeve is a tool for communicating a shaft and a stratum without perforation at the first section of an oil-gas horizontal well and a directional well in a casing well completion, and the sliding sleeve is opened by suppressing pressure of the shaft.
At present, the existing toe end sliding sleeve is only connected with a shaft and a well cementation cement sheath after being opened, the penetration depth of hydraulic sand blasting perforation and firer perforation cannot be reached, and when the surrounding near well of the preset position of the toe end sliding sleeve is seriously polluted and the mud content of a reservoir is high, the existing toe end sliding sleeve is connected with the shaft and the well cementation cement sheath after being opened, and the stratum is difficult to be pressed open to implement fracturing operation.
Disclosure of Invention
In view of the above problems, the present invention provides a rupture disc type toe end sliding sleeve and a using method thereof, wherein a solid strong acid carrier is placed in a space formed by an adjusting ring, a rupture disc and a separation plate, and after the rupture disc is ruptured, the solid strong acid rapidly reacts with water to generate a strong acid to corrode a cement sheath, thereby improving the connectivity between the sliding sleeve and a stratum.
The technical scheme of the invention is as follows:
the utility model provides a disc toe end sliding sleeve breaks, includes the sliding sleeve body, the sliding sleeve body is cylindrical structure, and its center is the runner that runs through, the last port of sliding sleeve body is provided with the top connection, the lower port of sliding sleeve body is provided with the lower clutch, sliding sleeve body middle part circumference is provided with a plurality of cylindrical holes, cylindrical hole with runner UNICOM, cylindrical hole installs rupture piece, adjustable ring and division board from inside to outside in proper order, the inside cavity of adjustable ring, with rupture piece and division board form the enclosure space, be equipped with solid strong acid carrier in the enclosure space, be equipped with solid strong acid in the solid strong acid carrier.
One side of the cylindrical hole, which is far away from the flow passage direction, is provided with a clamp spring groove, a clamp spring is arranged in the clamp spring groove, and the clamp spring is fixedly connected with the isolation plate and limits and fixes the adjusting ring in the cylindrical hole.
The solid strong acid carrier is a hollow closed glass shell, a closed space formed by the rupture disc, the adjusting ring and the isolating plate is filled with high-temperature-resistant isolating grease, and the solid strong acid carrier is positioned in the high-temperature-resistant isolating grease.
The rupture disc is of a cylindrical structure, an O-shaped sealing ring installation groove is designed on the side face of the cylindrical structure, a V-shaped stress groove is formed in one end of each of two end faces of the cylindrical structure, and a breaking stress grid is arranged at one end of each of the two end faces of the cylindrical structure;
the rupture disk 3 forms a seal with the cylindrical hole through an O-shaped sealing ring in the O-shaped sealing ring accommodating groove.
The rupture disc is provided with a V-shaped stress groove 13 at one end close to the flow channel.
The upper joint is in an oil pipe female thread buckle type.
The lower joint is of an oil pipe male thread buckle type.
A method for using the rupture disc type toe end sliding sleeve comprises the following steps:
the method comprises the following steps: setting the broken disc type toe end sliding sleeve into a preset position;
connecting the rupture disc type toe end sliding sleeve with a well completion casing through an upper joint and a lower joint, putting the rupture disc type toe end sliding sleeve and the well completion casing into a preset position together, and then performing well cementation operation;
step two: opening the rupture disc type toe end sliding sleeve;
high pressure is suppressed in the shaft, the high pressure of the shaft acts on the inner surface of the rupture disk to generate hydraulic acting force, and the adjusting ring and the clamp spring limit the rupture disk from moving outwards. When the pressure difference between the pressure in the shaft and the pressure difference in the closed space formed by the adjusting ring, the rupture disc and the isolating plate is greater than the set rupture pressure of the rupture disc, the rupture disc is sheared and ruptured from the position of the V-shaped stress groove, high-pressure liquid in the shaft enters the closed space formed by the adjusting ring, the rupture disc and the isolating plate, the solid strong acid carrier is ruptured under the action of high pressure at the moment of opening the rupture disc type toe end sliding sleeve, the solid strong acid reacts with water to generate strong acid, and the strong acid can generate chemical reaction on a well cementation cement ring and a stratum to assist in establishing a connecting channel between the shaft and the stratum.
The invention has the technical effects that: 1. according to the invention, the solid strong acid carrier is placed in the space formed by the adjusting ring, the rupture disc and the isolating plate, and after the rupture disc is ruptured, the solid strong acid rapidly reacts with water to generate strong acid, so that the cement sheath is corroded, and the connectivity of the sliding sleeve and the stratum is improved. 2. According to the invention, the V-shaped stress groove and the crushing stress grid are arranged on the rupture disc, so that the rupture disc can be rapidly fractured after pressurization in the tubular column, and the rupture disc is simple to operate, safe and reliable.
The following will be further described with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural view of a burst disk type toe end sliding sleeve of the present invention.
FIG. 2 is a schematic view of a rupture disk structure of the rupture disk type toe end sliding sleeve of the present invention.
Reference numerals: 1-sliding sleeve body, 2-snap spring, 3-rupture disc, 4-isolation plate, 5-adjusting ring, 6- 'O' -shaped sealing ring, 7-solid strong acid carrier, 8-cylindrical hole, 9-snap spring groove, 10-lower joint, 11-upper joint, 12-flow channel, 13- 'V' -shaped stress groove, 14-crushing stress grid and 15 '-O' -shaped sealing ring groove.
Detailed Description
Example 1
In order to overcome the problem that the conventional toe end sliding sleeve cannot effectively communicate with a stratum and perform subsequent operation after being opened under the conditions of severe near-well pollution and high reservoir mud content, the invention provides the rupture disc type toe end sliding sleeve and a use method thereof as shown in figure 1.
As shown in fig. 1, a burst disc type toe end sliding sleeve comprises: sliding sleeve body 1, sliding sleeve body 1 is cylindrical structure, and its center is runner 12 that runs through, sliding sleeve body 1's last port is provided with top connection 11, sliding sleeve body 1's lower port is provided with lower clutch 10, sliding sleeve body 1 middle part circumference is provided with a plurality of cylindrical hole 8, cylindrical hole 8 with runner 12 UNICOM, cylindrical hole 8 installs rupture disc 3, adjustable ring 5 and division board 4 from inside to outside in proper order, 5 inside cavitys of adjustable ring, with rupture disc 3 and division board 4 form the enclosure space, be equipped with solid strong acid carrier 7 in the enclosure space, be equipped with solid strong acid in the solid strong acid carrier 7.
According to the invention, the solid strong acid carrier 7 is arranged in the closed space formed by the rupture disc 3, the adjusting ring 5 and the isolating plate 4, the pressure is applied in the through flow channel 12 in the center of the sliding sleeve body 1, after the rupture disc 3 is broken, the cylindrical hole 8 is communicated with the flow channel 12, the solid strong acid in the solid strong acid carrier 7 is dissolved and reacts rapidly with water to generate strong acid, so that the cement sheath is corroded, and the connectivity between the sliding sleeve and the stratum is improved.
Example 2
Preferably, on the basis of embodiment 1, in this embodiment, preferably, a clamp spring groove 9 is formed in one side of the cylindrical hole 8, which is away from the direction of the flow passage 12, a clamp spring 2 is arranged in the clamp spring groove 9, and the clamp spring 2 is fixedly connected to the isolation plate 4 and limits and fixes the adjusting ring 5 in the cylindrical hole 8.
In practical use, the snap spring 2 limits and fixes the adjusting ring 5 in the cylindrical hole 8, so that the adjusting ring is prevented from moving to the flow channel 12 close to the cylindrical hole 8 to cause the rupture disc to rupture due to the external liquid column pressure of the sliding sleeve body 1.
Preferably, the solid strong acid carrier 7 is a hollow sealed glass shell, a sealed space formed by the rupture disc 3, the adjusting ring 5 and the isolation plate 4 is filled with high-temperature resistant isolation grease, and the solid strong acid carrier 7 is located in the high-temperature resistant isolation grease.
In practical use, the solid strong acid carrier 7 is a hollow sealed glass shell, so that the solid strong acid can be ensured not to contact and react with other liquid when the rupture disc 3 is not ruptured, and when the rupture disc 3 is ruptured, the hollow sealed glass shell is ruptured along with the pressure change, so that the solid strong acid is released; the high temperature resistant isolation grease can ensure the thermal stability of the solid strong acid in the solid strong acid carrier 7 when the rupture disc 3 is not ruptured.
Preferably, as shown in fig. 2, the rupture disc 3 is a cylindrical structure, an O-shaped sealing ring installation groove 15 is designed on the side surface of the cylindrical structure, a V-shaped stress groove 13 is arranged at one end of two end surfaces of the cylindrical structure, and a crushing stress grid 14 is arranged at one end; the rupture disc 3 forms a seal with the cylindrical bore 8 via the O-ring 6 in the O-ring groove 15. The rupture disc 3 is provided with a V-shaped stress groove 13 at one end close to the flow passage 12.
In practical use, because the rupture disk 3 is provided with the O-ring groove 15, the O-ring 6 can ensure that the rupture disk 3 forms a seal with the cylindrical hole 8, and prevent water from entering the closed space formed by the rupture disk 3, the adjusting ring 5 and the partition plate 4 to cause the solid strong acid in the solid strong acid carrier 7 to react in advance and fail. Because the rupture disc 3 is provided with the V-shaped stress groove 13 and the crushing stress grid 14, the rupture disc 3 can be rapidly fractured after pressurization in a pipe column, and the rupture disc is simple to operate, safe and reliable.
Preferably, the upper joint 11 is of a tubing nut thread buckle type. The lower joint 10 is of an oil pipe male thread buckle type.
In practical use, the upper joint 1 is of an oil pipe female thread buckle type, and the lower joint 10 is of an oil pipe male thread buckle type. Because the oil pipe thread buckle type is used, the invention can be conveniently connected on a working pipe column without using a special adapter.
Example 3
On the basis of the embodiment 2, a method for using the rupture disc type toe end sliding sleeve uses any one of the rupture disc type toe end sliding sleeves, and the specific process is as follows:
the method comprises the following steps: setting the broken disc type toe end sliding sleeve into a preset position;
connecting the rupture disc type toe end sliding sleeve with a well completion casing through an upper joint 11 and a lower joint 10, putting the rupture disc type toe end sliding sleeve and the well completion casing into a preset position together, and then implementing well cementation operation;
step two: opening the rupture disc type toe end sliding sleeve;
high pressure is suppressed in the shaft, the high pressure of the shaft acts on the inner surface of the rupture disk to generate hydraulic acting force, and the adjusting ring 5 and the clamp spring 2 limit the rupture disk 3 from moving outwards. When the pressure difference between the pressure in the shaft and the pressure difference in the closed space formed by the adjusting ring 5, the rupture disc 3 and the isolating plate 4 is larger than the set rupture pressure of the rupture disc 3, the rupture disc 3 is sheared and ruptured from the position of the V-shaped stress groove 13, high-pressure liquid in the shaft enters the closed space formed by the adjusting ring 5, the rupture disc 3 and the isolating plate 4, the glass shell of the solid strong acid carrier 7 is ruptured under the high-pressure action at the moment of opening the rupture disc type toe end sliding sleeve, the solid strong acid reacts with water to generate strong acid, and the strong acid can generate chemical reaction on a well cementation cement ring and a stratum to assist in establishing a connecting channel between the shaft and the stratum.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (9)
1. A burst disc toe sleeve, comprising: sliding sleeve body (1), sliding sleeve body (1) is cylindrical structure, and its center is runner (12) that runs through, the last port of sliding sleeve body (1) is provided with top connection (11), the lower port of sliding sleeve body (1) is provided with lower clutch (10), sliding sleeve body (1) middle part circumference is provided with a plurality of cylindrical holes (8), cylindrical hole (8) with runner (12) UNICOM, cylindrical hole (8) are installed from inside to outside in proper order and are broken piece (3), adjustable ring (5) and division board (4), the inside cavity of adjustable ring (5), with it forms the enclosure space to break piece (3) and division board (4), be equipped with solid strong acid carrier (7) in the enclosure space, be equipped with solid strong acid in solid strong acid carrier (7).
2. The burst disc toe sleeve of claim 1, wherein: one side of the cylindrical hole (8) far away from the direction of the flow channel (12) is provided with a clamp spring groove (9), a clamp spring (2) is arranged in the clamp spring groove (9), the clamp spring (2) is fixedly connected with the isolating plate (4), and the adjusting ring (5) is fixed in the cylindrical hole (8) in a limiting mode.
3. The burst disc toe sleeve of claim 1, wherein: the solid strong acid carrier (7) is a hollow closed glass shell, high-temperature-resistant isolation grease is filled in a closed space formed by the rupture disc (3), the adjusting ring (5) and the isolating plate (4), and the solid strong acid carrier (7) is located in the high-temperature-resistant isolation grease.
4. The burst disc toe sleeve of claim 1, wherein: the rupture disc (3) is of a cylindrical structure, an O-shaped sealing ring accommodating groove (15) is designed on the side face of the cylindrical structure, a V-shaped stress groove (13) is formed in one end of each of two end faces of the cylindrical structure, and a crushing stress grid (14) is arranged at one end of each end face of the cylindrical structure.
5. The burst disc toe sleeve of claim 4, wherein: the rupture disc (3) forms a seal with the cylindrical hole (8) through an O-shaped sealing ring (6) in the O-shaped sealing ring containing groove (15).
6. The burst disc toe sleeve of claim 4, wherein: one end of the rupture disc (3) provided with a V-shaped stress groove (13) is close to the flow channel (12).
7. The burst disc toe sleeve of claim 1, wherein: the upper joint (11) is in an oil pipe female thread buckle type.
8. The burst disc toe sleeve of claim 1, wherein: the lower joint (10) is of an oil pipe male thread buckle type.
9. The method of using a split-disc toe sleeve according to any of claims 1 to 8, wherein: the method comprises the following steps:
the method comprises the following steps: setting the broken disc type toe end sliding sleeve into a preset position;
connecting the rupture disc type toe end sliding sleeve with a well completion casing through an upper joint (11) and a lower joint (10), putting the rupture disc type toe end sliding sleeve and the well completion casing into a preset position together, and then implementing well cementation operation;
step two: opening the rupture disc type toe end sliding sleeve;
high pressure is suppressed in the shaft, the shaft high pressure acts on the inner surface of the rupture disc (3) to generate hydraulic acting force, and the adjusting ring (5) and the clamp spring (2) limit the rupture disc (3) from moving outwards; when the pressure difference between the pressure in the shaft and the pressure difference in the closed space formed by the adjusting ring (5), the rupture disc (3) and the isolating plate (4) is larger than the set rupture pressure of the rupture disc (3), the rupture disc (3) is sheared and ruptured from the position of the V-shaped stress groove (13), high-pressure liquid in the shaft enters the closed space formed by the adjusting ring (5), the rupture disc (3) and the isolating plate (4), the solid strong acid carrier (7) is ruptured under the high-pressure action at the moment of opening the rupture disc type toe end sliding sleeve, the solid strong acid reacts with water to generate strong acid, and the strong acid can generate chemical reaction on a well cementation cement ring and a stratum and assist in establishing a connecting channel between the shaft and the stratum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011207274.XA CN112267849A (en) | 2020-11-03 | 2020-11-03 | Rupture disc type toe end sliding sleeve and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011207274.XA CN112267849A (en) | 2020-11-03 | 2020-11-03 | Rupture disc type toe end sliding sleeve and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112267849A true CN112267849A (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011207274.XA Pending CN112267849A (en) | 2020-11-03 | 2020-11-03 | Rupture disc type toe end sliding sleeve and using method thereof |
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| CN (1) | CN112267849A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117489300A (en) * | 2023-12-29 | 2024-02-02 | 合力（天津）能源科技股份有限公司 | Electrohydraulic control toe end sliding sleeve |
-
2020
- 2020-11-03 CN CN202011207274.XA patent/CN112267849A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117489300A (en) * | 2023-12-29 | 2024-02-02 | 合力（天津）能源科技股份有限公司 | Electrohydraulic control toe end sliding sleeve |
| CN117489300B (en) * | 2023-12-29 | 2024-03-15 | 合力（天津）能源科技股份有限公司 | Electrohydraulic control toe end sliding sleeve |
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