CN111691853B - High-pressure energy storage time-delay opening type toe end sliding sleeve and use method thereof - Google Patents
High-pressure energy storage time-delay opening type toe end sliding sleeve and use method thereof Download PDFInfo
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- CN111691853B CN111691853B CN202010650600.8A CN202010650600A CN111691853B CN 111691853 B CN111691853 B CN 111691853B CN 202010650600 A CN202010650600 A CN 202010650600A CN 111691853 B CN111691853 B CN 111691853B
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- energy storage
- pressure
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000004146 energy storage Methods 0.000 title claims abstract description 27
- 238000012360 testing method Methods 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 239000012530 fluid Substances 0.000 claims description 17
- 238000010008 shearing Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 11
- 238000004891 communication Methods 0.000 description 10
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Abstract
The invention provides a high-pressure energy storage time-delay opening type toe end sliding sleeve and a use method thereof, wherein the sliding sleeve at least comprises an upper joint, a check valve, an outer shell, a spring, an inner shell, a piston, a shear pin and a lower joint; the check valve is arranged on the lower side surface of the upper joint, and two ends of the shell are respectively connected with the upper joint and the lower joint; the inner shell is arranged in the outer shell, the piston is arranged between the outer shell and the inner shell and is fixed with the outer shell through a shear pin, and the spring is arranged between the lower end face of the upper joint and the upper end face of the piston. According to the invention, the high-pressure energy storage function of the cavity I is realized while the sleeve strength pressure test operation before fracturing construction is realized; and opening a tool liquid flow channel after the wellhead is depressurized, so that the shaft is communicated with the stratum, and opening the toe end sliding sleeve. The pressure testing device is not accidentally started in the pressure testing process, and the toe end sliding sleeve can be started after the sleeve pipe strength high-pressure testing operation is finished and the wellhead is depressurized, so that the process requirement of shaft strength pressure testing is met.
Description
Technical Field
The invention belongs to the field of oil and gas field development, and particularly relates to a high-pressure energy storage time-delay opening type toe end sliding sleeve and a use method thereof.
Background
The toe end sliding sleeve tool is a downhole tool for quickly and efficiently opening a stratum without perforation, is put into a preset position along with a well completion sleeve and performs well cementation operation, and the toe end sliding sleeve is opened directly through shaft pressure blocking during fracturing construction, and is injected directly through a light sleeve to perform first-stage fracturing construction operation. The tool can rapidly and efficiently realize communication between a shaft and a stratum, and rapidly and efficiently solve the problems of first-layer perforation fracturing of a sleeve sliding sleeve layering section fracturing and bridging jet combined staged fracturing process, in particular to the difficult problem of perforation of the first section of an ultra-long horizontal well beyond the depth of an oil pipe. However, the toe end sliding sleeve tool is opened through the pressure build-up in the casing, and conflicts with the operation of pressure test aiming at the casing strength before the fracturing construction of a new well.
Disclosure of Invention
The invention provides a high-pressure energy storage time-delay open type toe end sliding sleeve and a use method thereof, which meet the requirement of casing strength pressure test operation before fracturing construction and simultaneously have the function of the toe end sliding sleeve capable of realizing effective communication between a shaft and a stratum.
The invention adopts the technical scheme that:
the high-pressure energy storage time-delay opening type toe end sliding sleeve at least comprises an upper joint, a check valve, an outer shell, a spring, an inner shell, a piston, a shear pin and a lower joint; the check valve is arranged on the lower side surface of the upper joint, and two ends of the shell are respectively connected with the upper joint and the lower joint; the inner shell is arranged in the outer shell, the piston is arranged between the outer shell and the inner shell and is fixed with the outer shell through a shear pin, and the spring is arranged between the lower end face of the upper joint and the upper end face of the piston.
The shell is respectively connected and fixed with the upper joint and the lower joint through threads.
The device comprises a cavity I formed by the lower surface of the upper joint, the inner surface of the outer shell, the outer surface of the inner shell and the upper end surface of the piston, wherein the cavity I is communicated with a check valve, a spring is arranged in the cavity I, and in an initial state, the spring is in an initial pre-tightening force which is smaller than the shearing force of a shear pin; the inner surface of the outer shell, the outer surface of the inner shell, the lower end surface of the piston and the upper surface of the lower joint form a chamber II, and the chamber II is communicated with the interface C.
The inner shell on be equipped with interface B and interface C, the shell on be equipped with interface D, interface B and interface D symmetry establish in piston department, interface C be located the inner shell lower part.
The inner side of the lower part of the upper joint is provided with an interface A, and the interface A is communicated with the check valve.
And in the state that the interface B and the interface D are completely communicated, the lower end face of the piston is in contact connection with the upper end face of the lower connector.
The inner surface and the outer surface of the piston are respectively connected with the inner shell and the outer shell in a sliding and sealing way.
The lower part of the upper joint is provided with an inner step, the upper end face of the inner shell is connected with the inner step, and the lower end face of the inner shell is connected with the upper end face of the lower joint.
A high-pressure energy storage time-delay open-type toe end sliding sleeve using method comprises the following specific steps:
the toe end sliding sleeve tool is lowered to a preset position along with the well completion sleeve to perform well cementation operation; in the initial state of the tool, the spring has initial pretightening force which is smaller than the shearing force of the shear pin, the liquid pressure born by the upper end face and the lower end face of the piston is always equal, and the toe end sliding sleeve tool cannot be opened in the well cementation process;
in the process of applying high pressure at a wellhead, high-pressure fluid of a shaft enters a chamber I from an interface A, and meanwhile, high-pressure fluid of the shaft enters a chamber II from an interface C; because the areas of the upper end face and the lower end face of the piston are equal, the upper liquid pressure and the lower liquid pressure are equal, the pretightening force of the spring is smaller than the shearing force of the shear pin, the piston cannot relatively displace between the outer shell and the inner shell, namely, the toe end sliding sleeve cannot be opened in the process of applying high pressure to a well head to test the pressure of a well shaft; the single flow valve is arranged on the lower side surface of the upper joint, fluid in the well bore is allowed to enter the chamber I from the interface A, fluid in the chamber II can flow out or flow in through the interface C, and after the toe end sliding sleeve tool is opened, the well bore can be communicated with the stratum through the interface B and the interface D.
The beneficial effects of the invention are as follows:
the invention realizes effective communication between the shaft and the stratum by the up-and-down movement of the piston between the inner shell and the outer shell. The invention provides a high-pressure energy storage time-delay open-type toe end sliding sleeve, which meets the requirement of casing strength pressure test operation before fracturing construction and has the function of realizing effective communication between a shaft and a stratum.
Further description will be made below with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic diagram of the structure of the present invention.
FIG. 2 is a schematic view of the present invention for opening a channel.
In the drawings, reference numerals are: 1. an upper joint; 2. a single flow valve; 3. a housing; 4. a spring; 5. an inner case; 6. a piston; 7. shearing nails; 8. and a lower joint.
Detailed Description
Example 1:
the invention provides a high-pressure energy storage time-delay open type toe end sliding sleeve and a use method thereof, which are shown in figures 1 and 2, and have the function of realizing the toe end sliding sleeve for effectively communicating a shaft with a stratum while meeting the requirement of casing strength pressure test operation before fracturing construction.
The high-pressure energy storage time-delay opening type toe end sliding sleeve at least comprises an upper joint 1, a check valve 2, an outer shell 3, a spring 4, an inner shell 5, a piston 6, a shear pin 7 and a lower joint 8; the check valve 2 is arranged on the lower side surface of the upper joint 1, and two ends of the shell 3 are respectively connected with the upper joint 1 and the lower joint 8; the inner shell 5 is arranged in the outer shell 3, the piston 6 is arranged between the outer shell 3 and the inner shell 5 and is fixed with the outer shell 3 through the shear pin 7, and the spring 4 is arranged between the lower end face of the upper joint 1 and the upper end face of the piston 6.
The invention realizes effective communication between the shaft and the stratum through the up-and-down movement of the piston 6 between the inner shell and the outer shell. The invention provides a high-pressure energy storage time-delay open-type toe end sliding sleeve, which meets the requirement of casing strength pressure test operation before fracturing construction and has the function of realizing effective communication between a shaft and a stratum.
Example 2:
based on the embodiment 1, in this embodiment, the housing 3 is preferably connected and fixed to the upper joint 1 and the lower joint 8 by threads, respectively.
Preferably, the cavity I formed by the lower surface of the upper joint 1, the inner surface of the outer shell 3, the outer surface of the inner shell 5 and the upper end surface of the piston 6 is communicated with the check valve 2, the spring 4 is arranged in the cavity I, and in an initial state, the spring 4 is in initial pre-tightening force which is smaller than the shearing force of the shear pin 7; the inner surface of the outer shell 3, the outer surface of the inner shell 5, the lower end surface of the piston 6 and the upper surface of the lower joint 8 form a chamber II, and the chamber II is communicated with the interface C.
Preferably, the inner shell 5 is provided with an interface B and an interface C, the outer shell 3 is provided with an interface D, the interface B and the interface D are symmetrically arranged at the piston 6, and the interface C is positioned at the lower part of the inner shell 5.
Preferably, the inner side of the lower part of the upper joint 1 is provided with a connector A, and the connector A is communicated with the check valve 2.
Preferably, in the state that the interface B and the interface D are completely communicated, the lower end face of the piston 6 is in contact connection with the upper end face of the lower joint 8.
The single flow valve 2 allows fluid in the well bore to enter the chamber I from the interface A, does not allow fluid to flow out of the chamber I through the interface A, and fluid in the chamber II can flow out or flow in through the interface C, and after the toe end sliding sleeve tool is opened, the well bore can be communicated with the stratum through the interfaces B and D.
Preferably, the inner and outer surfaces of the piston 6 are slidably and sealingly connected to the inner and outer shells 5, 3, respectively.
Preferably, the lower part of the upper joint 1 is provided with an inner step, the upper end surface of the inner shell 5 is connected with the inner step, and the lower end surface of the inner shell 5 is connected with the upper end surface of the lower joint 8.
A high-pressure energy storage time-delay open-type toe end sliding sleeve using method is used for the first stage fracturing construction operation of a sleeve sliding sleeve layering stage fracturing and bridging jet combined staged fracturing process, and can meet the requirement of sleeve strength pressure test operation before fracturing construction.
Drilling and cementing operation: and (3) the toe end sliding sleeve tool is lowered to a preset position along with the well completion sleeve to perform well cementation operation. In the initial state of the tool, the spring 4 has initial pretightening force, the pretightening force is smaller than the shearing force of the shear pin 7, the liquid pressure born by the upper end face and the lower end face of the piston 6 is always equal, and the toe end sliding sleeve tool cannot be opened in the well cementation process.
Sleeve intensity high-voltage pressure test action: as shown in fig. 1, during the application of high pressure at the wellhead, wellbore high pressure fluid enters chamber I through port a, while wellbore high pressure fluid enters chamber II through port C. Because the areas of the upper end face and the lower end face of the piston 6 are equal, the received upper liquid pressure and the received lower liquid pressure are also equal, the pretightening force of the spring 4 is smaller than the shearing force of the shear pin 7, the piston 6 cannot relatively displace between the outer shell 3 and the inner shell 5, namely, the toe end sliding sleeve cannot be opened in the process of applying high pressure to a well head to test the pressure of a well shaft. The check valve 2 is arranged on the lower side surface of the upper joint 1, the check valve 2 allows fluid in a shaft to enter the chamber I from the interface A, fluid in the chamber II can flow out or flow in through the interface C, and after the toe end sliding sleeve tool is opened, the shaft can communicate with a stratum through the interfaces B and D.
A high-pressure energy storage time-delay opening type toe end sliding sleeve tool passage opening action: after the sleeve intensity high-pressure test action is finished and the wellhead discharges high pressure, the high pressure in the chamber I in the previous stage is not discharged under the action of the uniflow valve 2, namely, the chamber I is enclosed with the high-pressure fluid in the previous stage, the high pressure in the chamber II is discharged along with the wellhead pressure discharge through the interface C, namely, the chamber II is also low pressure after the wellhead pressure discharge, the piston 6 can be subjected to downward liquid acting force under the action of different liquid pressures of the upper end face and the lower end face, at the moment, the downward liquid acting force is added with the pretightening force of the spring 4 and is larger than the shearing force of the shear pin 7, the shear pin 7 is sheared, the piston 6 moves to one side of the lower connector 8, and under the action of the thrust of the pretightening force of the spring, the piston 6 always moves downwards to the contact position of the lower end face of the piston 6 with the upper end face of the lower connector 8, as shown in fig. 2, and at the moment, the toe end sliding sleeve tool is opened, and shaft communication with a stratum is realized through the interface B and the interface D.
According to the invention, high pressure is applied through the wellhead, the high pressure energy storage function is realized by the cavity I while the casing strength pressure test operation before fracturing construction is realized, the tool liquid flow channel, namely the communication interface B and the communication interface D, is opened by means of the energy of the mechanism after the wellhead is depressurized, the communication between the shaft and the stratum is realized, and the toe end sliding sleeve is opened. The toe end sliding sleeve is not accidentally opened in the process of carrying out the whole high-pressure test of the casing strength, the high-pressure test operation of the casing strength is finished, and the toe end sliding sleeve is opened after the wellhead is depressurized, so that the process requirement of the shaft strength test is met.
The above examples are merely illustrative of the present invention and are not meant to limit the scope of the present invention, and all designs that are the same or similar to the present invention are within the scope of the present invention. The apparatus structure and method steps not described in detail in this embodiment are well known and commonly used in the industry and will not be described in detail herein.
Claims (5)
1. A high-pressure energy storage time-delay open-type toe end sliding sleeve application method is characterized in that: the high-pressure energy storage time-delay opening type toe end sliding sleeve is adopted, and at least comprises an upper joint (1), a check valve (2), an outer shell (3), a spring (4), an inner shell (5), a piston (6), a shear pin (7) and a lower joint (8); the check valve (2) is arranged on the lower side surface of the upper joint (1), and two ends of the shell (3) are respectively connected with the upper joint (1) and the lower joint (8); the inner shell (5) is arranged in the outer shell (3), the piston (6) is arranged between the outer shell (3) and the inner shell (5) and is fixed with the outer shell (3) through a shear pin (7), and the spring (4) is arranged between the lower end face of the upper joint (1) and the upper end face of the piston (6); the lower surface of the upper joint (1), the inner surface of the outer shell (3), the outer surface of the inner shell (5) and the upper end surface of the piston (6) form a cavity I, the cavity I is communicated with the uniflow valve (2), a spring (4) is arranged in the cavity I, and in an initial state, the spring (4) has an initial pretightening force which is smaller than the shearing force of the shear pin (7); the inner surface of the outer shell (3), the outer surface of the inner shell (5), the lower end surface of the piston (6) and the upper surface of the lower joint (8) form a chamber II, and the chamber II is communicated with the interface C; an interface B and an interface C are arranged on the inner shell (5), an interface D is arranged on the outer shell (3), the interface B and the interface D are symmetrically arranged at the piston (6), and the interface C is positioned at the lower part of the inner shell (5); an interface A is arranged on the inner side of the lower part of the upper joint (1), and the interface A is communicated with the uniflow valve (2);
the using method of the high-pressure energy storage time-delay open-type toe end sliding sleeve comprises the following specific steps:
the high-pressure energy storage time-delay opening toe end sliding sleeve is put into a preset position along with the well completion sleeve to implement well cementation operation; in the initial state of the high-pressure energy storage time-delay open-type toe end sliding sleeve, the spring (4) has initial pretightening force which is smaller than the shearing force of the shear pin (7), the liquid pressure born by the upper end surface and the lower end surface of the piston (6) is always equal, and the high-pressure energy storage time-delay open-type toe end sliding sleeve cannot be opened in the well cementation process;
in the process of applying high pressure at a wellhead, high-pressure fluid of a shaft enters a chamber I from an interface A, and meanwhile, high-pressure fluid of the shaft enters a chamber II from an interface C; the upper end surface area and the lower end surface area of the piston (6) are equal, so that the upper liquid pressure and the lower liquid pressure are equal, the pretightening force of the spring (4) is smaller than the shearing force of the shear pin (7), the piston (6) cannot relatively displace between the outer shell (3) and the inner shell (5), namely, the high-pressure energy storage delay open-type toe end sliding sleeve cannot be opened in the process of applying high pressure to a well head to test the pressure of a well shaft; the single flow valve (2) is arranged on the lower side surface of the upper joint (1), the single flow valve (2) allows fluid in a shaft to enter the cavity I from the interface A, fluid is not allowed to flow out of the cavity I through the interface A, fluid in the cavity II can flow out or flow in through the interface C, and after the high-pressure energy storage time-delay open type toe end sliding sleeve is opened, the shaft is communicated with a stratum through the interface B and the interface D.
2. The method for using the high-pressure energy storage time-delay open-type toe end sliding sleeve according to claim 1, wherein the method comprises the following steps: the shell (3) is respectively connected and fixed with the upper joint (1) and the lower joint (8) through threads.
3. The method for using the high-pressure energy storage time-delay open-type toe end sliding sleeve according to claim 1, wherein the method comprises the following steps: and in the state that the interface B and the interface D are completely communicated, the lower end surface of the piston (6) is in contact connection with the upper end surface of the lower joint (8).
4. The method for using the high-pressure energy storage time-delay open-type toe end sliding sleeve according to claim 1, wherein the method comprises the following steps: the inner surface and the outer surface of the piston (6) are respectively connected with the inner shell (5) and the outer shell (3) in a sliding sealing way.
5. The method for using the high-pressure energy storage time-delay open-type toe end sliding sleeve according to claim 1, wherein the method comprises the following steps: the lower part of the upper joint (1) is provided with an inner step, the upper end face of the inner shell (5) is connected with the inner step, and the lower end face of the inner shell (5) is connected with the upper end face of the lower joint (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010650600.8A CN111691853B (en) | 2020-07-08 | 2020-07-08 | High-pressure energy storage time-delay opening type toe end sliding sleeve and use method thereof |
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|---|---|---|---|
| CN202010650600.8A CN111691853B (en) | 2020-07-08 | 2020-07-08 | High-pressure energy storage time-delay opening type toe end sliding sleeve and use method thereof |
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| CN111691853A CN111691853A (en) | 2020-09-22 |
| CN111691853B true CN111691853B (en) | 2024-01-19 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112049606B (en) * | 2020-09-30 | 2024-02-06 | 中国石油天然气集团有限公司 | Time-delay opening toe end sliding sleeve and opening method thereof |
| CN113738304B (en) * | 2021-09-17 | 2023-04-11 | 中国石油化工股份有限公司 | Toe end sliding sleeve with shaft pressure testing function |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4281715A (en) * | 1979-05-16 | 1981-08-04 | Halliburton Company | Bypass valve |
| CN2849167Y (en) * | 2005-10-13 | 2006-12-20 | 周远斌 | Under well hydraulic tool drillstem pressure testing device |
| CN204532322U (en) * | 2015-03-02 | 2015-08-05 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | A kind of horizontal well desirable core sliding sleeve multistage fracturing completion tubular column |
| CN105401917A (en) * | 2015-10-26 | 2016-03-16 | 东北石油大学 | Full-diameter infinite order cam shaft switch type fracture sliding sleeve |
| CN205117285U (en) * | 2015-07-15 | 2016-03-30 | 北京佰文恒新能源服务有限公司 | Time delay starts fracturing sliding sleeve |
| CN109025943A (en) * | 2018-08-21 | 2018-12-18 | 中国石油天然气股份有限公司 | A kind of time lagged type pressure break channel construction method |
| CN109072683A (en) * | 2016-03-15 | 2018-12-21 | 美国雄鹰油田产品有限责任公司 | Toe valve |
| CN109296348A (en) * | 2018-10-31 | 2019-02-01 | 中国石油集团川庆钻探工程有限公司 | Delayed start-up toe-end sliding sleeve |
| CN109296349A (en) * | 2018-11-05 | 2019-02-01 | 中国石油集团川庆钻探工程有限公司 | Piston type delayed start-up toe-end sliding sleeve |
| CN209261536U (en) * | 2018-11-05 | 2019-08-16 | 中国石油集团川庆钻探工程有限公司 | A kind of piston type delayed start-up toe-end sliding sleeve |
| WO2019207398A1 (en) * | 2018-04-23 | 2019-10-31 | Downhole Products Limited | Resettable toe valve |
| CN110513095A (en) * | 2019-09-23 | 2019-11-29 | 中国石油集团川庆钻探工程有限公司 | A kind of well fracturing reforming technology for opening toe-end sliding sleeve using controllable time delay |
| CN110566159A (en) * | 2019-09-23 | 2019-12-13 | 中国石油集团川庆钻探工程有限公司 | oil-gas well fracturing transformation process adopting time-delay opening toe end sliding sleeve |
| CN111021990A (en) * | 2019-12-18 | 2020-04-17 | 中国石油天然气股份有限公司 | Soluble toe end sliding sleeve for well cementation and completion and using method thereof |
| CN210660028U (en) * | 2019-09-23 | 2020-06-02 | 中国石油集团川庆钻探工程有限公司 | Toe end sliding sleeve capable of being controlled to be opened in delayed mode |
| CN212428732U (en) * | 2020-07-08 | 2021-01-29 | 中国石油天然气集团有限公司 | High-pressure energy-storage time-delay opening type toe end sliding sleeve |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7478678B2 (en) * | 2005-12-21 | 2009-01-20 | Baker Hughes Incorporated | Time release downhole trigger |
| US9334710B2 (en) * | 2013-01-16 | 2016-05-10 | Halliburton Energy Services, Inc. | Interruptible pressure testing valve |
| US10156124B2 (en) * | 2015-01-20 | 2018-12-18 | Tam International, Inc. | Balanced piston toe sleeve |
| US10337285B2 (en) * | 2016-12-12 | 2019-07-02 | Innovex Downhole Solutions, Inc. | Time-delayed downhole tool |
| US10689948B2 (en) * | 2017-06-01 | 2020-06-23 | Geodynamics, Inc. | Electronic time delay apparatus and method |
| US11268347B2 (en) * | 2017-07-24 | 2022-03-08 | National Oilwell Varco, L.P. | Testable sliding sleeve valve |
-
2020
- 2020-07-08 CN CN202010650600.8A patent/CN111691853B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4281715A (en) * | 1979-05-16 | 1981-08-04 | Halliburton Company | Bypass valve |
| CN2849167Y (en) * | 2005-10-13 | 2006-12-20 | 周远斌 | Under well hydraulic tool drillstem pressure testing device |
| CN204532322U (en) * | 2015-03-02 | 2015-08-05 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | A kind of horizontal well desirable core sliding sleeve multistage fracturing completion tubular column |
| CN205117285U (en) * | 2015-07-15 | 2016-03-30 | 北京佰文恒新能源服务有限公司 | Time delay starts fracturing sliding sleeve |
| CN105401917A (en) * | 2015-10-26 | 2016-03-16 | 东北石油大学 | Full-diameter infinite order cam shaft switch type fracture sliding sleeve |
| CN109072683A (en) * | 2016-03-15 | 2018-12-21 | 美国雄鹰油田产品有限责任公司 | Toe valve |
| WO2019207398A1 (en) * | 2018-04-23 | 2019-10-31 | Downhole Products Limited | Resettable toe valve |
| CN109025943A (en) * | 2018-08-21 | 2018-12-18 | 中国石油天然气股份有限公司 | A kind of time lagged type pressure break channel construction method |
| CN109296348A (en) * | 2018-10-31 | 2019-02-01 | 中国石油集团川庆钻探工程有限公司 | Delayed start-up toe-end sliding sleeve |
| CN109296349A (en) * | 2018-11-05 | 2019-02-01 | 中国石油集团川庆钻探工程有限公司 | Piston type delayed start-up toe-end sliding sleeve |
| CN209261536U (en) * | 2018-11-05 | 2019-08-16 | 中国石油集团川庆钻探工程有限公司 | A kind of piston type delayed start-up toe-end sliding sleeve |
| CN110513095A (en) * | 2019-09-23 | 2019-11-29 | 中国石油集团川庆钻探工程有限公司 | A kind of well fracturing reforming technology for opening toe-end sliding sleeve using controllable time delay |
| CN110566159A (en) * | 2019-09-23 | 2019-12-13 | 中国石油集团川庆钻探工程有限公司 | oil-gas well fracturing transformation process adopting time-delay opening toe end sliding sleeve |
| CN210660028U (en) * | 2019-09-23 | 2020-06-02 | 中国石油集团川庆钻探工程有限公司 | Toe end sliding sleeve capable of being controlled to be opened in delayed mode |
| CN111021990A (en) * | 2019-12-18 | 2020-04-17 | 中国石油天然气股份有限公司 | Soluble toe end sliding sleeve for well cementation and completion and using method thereof |
| CN212428732U (en) * | 2020-07-08 | 2021-01-29 | 中国石油天然气集团有限公司 | High-pressure energy-storage time-delay opening type toe end sliding sleeve |
Non-Patent Citations (2)
| Title |
|---|
| 水平井趾端压裂关键工具设计与试验;杨同玉;魏辽;冯丽莹;马兰荣;朱玉杰;;石油钻探技术(第04期);全文 * |
| 深层长水平段页岩气井趾端压裂滑套的研制;帅春岗;马辉运;魏微;喻成刚;牟乃渠;刘望;;天然气工业(第08期);全文 * |
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