CN112127855A - Full latus rectum sand control double-stage mechanism to staged fracturing pit shaft - Google Patents
Full latus rectum sand control double-stage mechanism to staged fracturing pit shaft Download PDFInfo
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- CN112127855A CN112127855A CN202011203589.7A CN202011203589A CN112127855A CN 112127855 A CN112127855 A CN 112127855A CN 202011203589 A CN202011203589 A CN 202011203589A CN 112127855 A CN112127855 A CN 112127855A
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- 239000004576 sand Substances 0.000 title claims abstract description 41
- 230000007246 mechanism Effects 0.000 title claims abstract description 20
- 210000000664 rectum Anatomy 0.000 title description 2
- 238000004519 manufacturing process Methods 0.000 claims abstract description 116
- 230000002265 prevention Effects 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 22
- 230000000694 effects Effects 0.000 claims description 11
- 238000010008 shearing Methods 0.000 claims description 9
- 210000000078 claw Anatomy 0.000 claims description 5
- 238000010276 construction Methods 0.000 description 24
- 239000003921 oil Substances 0.000 description 22
- 239000007789 gas Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 6
- 239000003129 oil well Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000000638 stimulation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003027 oil sand Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/14—Obtaining from a multiple-zone well
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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
- 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 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
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
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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
- 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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- Mining & Mineral Resources (AREA)
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- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
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Abstract
The invention discloses a full-drift-diameter sand control two-stage mechanism for a staged fracturing shaft, wherein the shaft comprises a base pipe sleeved in an outer pipe, the base pipe is divided into a production channel and a fracturing channel, and the outer pipe is connected with a well remaining pipe column through a lower joint; the shaft is provided with a double-stage mechanism which can carry out infinite layering compact network fracturing and sand prevention according to the stratum condition, and the double-stage mechanism comprises a production suite for controlling a production channel and a fracturing suite for controlling a fracturing channel; the production suite is connected with the fracturing suite to realize infinite layering of a fractured shaft and full drift diameter of a reserved well pipe column; the production external member comprises production sliding sleeve, production closed sleeve and production separated sleeve, the fracturing external member comprises fracturing sliding sleeve, fracturing closed sleeve and fracturing separated sleeve, and the mechanism solves the technical problem of restriction caused by the inner diameter of a fracturing pipe column and the grade difference of a ball seat in the development of a horizontal well at the present stage. And the problem of sand production of the pipe column in later production.
Description
Technical Field
The invention belongs to improvement of an oil and gas exploration pipe column, and particularly relates to a full-drift-diameter sand prevention two-stage mechanism for a staged fracturing shaft.
Background
With the continuous deepening of the oil and gas exploration and development technology, the horizontal well becomes an important means for improving the oil field exploration and development efficiency and benefit at present, and the technology is widely applied. In the development process, the development problems of low oil well yield after the conventional sand control of a loose sandstone reservoir, a heavy oil sand production reservoir and a low-yield sand production reservoir can be met. Measures for staged fracturing stimulation need to be taken. Current targets for this type of reservoir, particularly horizontal wells. The common staged fracturing technology is adopted, but because the physical properties of each stage of the oil and gas reservoir are not uniform, the oil and gas reservoir needs to be reformed by multiple stages. However, the common staged fracturing process is limited by the inner diameter of a construction pipe column and the pitching level difference, and the number of layers of the fracturing stages is limited. And after fracturing construction, the full drift diameter of a shaft cannot be realized, so that later-period measures and production of the oil-gas well are influenced. The fracturing yield-increasing scheme at the present stage does not consider the problems of sand production and sand prevention of the oil and gas well at the later stage, so that the life cycle of the development of the oil and gas well is limited, and the development cost of the oil and gas well is increased. 1. The technical problems to be solved are as follows: the number of layers of staged fracturing of an oil-gas well is limited by the inner diameter of a fracturing construction pipe column and the grade difference of a ball seat, and one-layer multi-cluster or infinite stage staged cannot be realized, so that dense net-shaped cracks cannot be formed after the oil-gas well is fractured, the yield after fracturing is reduced, and the target requirement of design and construction cannot be met. 2. The reason for the problem is: to original staged fracturing tubular column, generally need open the fracturing sliding sleeve through throwing into the fracturing ball of different grade differences to open the fracturing passageway. Due to the limitation of the inner diameter size of an oil pipe and the grade difference of a ball seat, the number of layers of the fracturing subsection can be limited, one-layer multi-cluster or infinite-grade layering can not be realized according to actual well conditions and geological conditions, and dense net-shaped fracturing cracks can not be effectively formed, so that the fracturing construction effect is influenced.
In the current stage of horizontal well fracturing construction process, the number of the staged layers in the staged fracturing construction process of the horizontal well is limited due to the limitation of the inner diameter of an oil pipe and the limitation of the grade difference of a ball seat, so that one-layer multi-cluster or infinite staged fracturing construction cannot be realized, compact cracks can not be formed in the fractured layer, and the fracturing construction effect is reduced. If the yield of the thickened oil sand production well and the low-permeability oil and gas reservoir is improved only by adopting a mode of improving the layer number and scale of fracturing, the sand spouting phenomenon after the oil and gas well is pressed is frequent, the corrosion of equipment is accelerated, the equipment can not work normally when the equipment is serious, and when the oil and gas well is in the middle and later period of exploitation, the stratum depletion is large, the water of an oil well is small, the sand spouting of the oil well is aggravated, and the normal performance of the productivity of the oil well is severely restricted. In particular, fracturing sand frequently occurs in a fracturing oil well, and the effect after the measures can be ensured only by adopting targeted sand prevention measures. Thus for this type of well, there is a need to address this problem from both a fracture stimulation and a post-fracture sand control perspective.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a full-drift-diameter sand prevention two-stage mechanism for a staged fracturing shaft, which solves the problem that the fracturing layer section is limited and cannot achieve the fracturing construction effect due to the limitation of the inner diameter of a fracturing pipe column and the limitation of the grade difference of a ball seat in the development of a horizontal well at the present stage, and simultaneously solves the problem that sand production is frequent after the fracturing construction of an oil-gas well, so that equipment is seriously corroded and damaged, the life cycle of a production well is shortened, and the development cost of the oil-gas well is greatly increased.
In order to solve the technical problems in the prior art, the invention is implemented by the following technical scheme:
a full-bore sand control two-stage mechanism for a staged fracturing shaft comprises a base pipe sleeved in an outer pipe, wherein the base pipe is divided into a production channel and a fracturing channel, and the outer pipe is connected with a well remaining pipe column through a lower joint; the shaft is provided with a double-stage mechanism which can carry out infinite layering compact network fracturing and sand prevention according to the stratum condition, and the double-stage mechanism comprises a production suite for controlling a production channel and a fracturing suite for controlling a fracturing channel; the production suite is connected with the fracturing suite to realize infinite layering of a fractured shaft and full drift diameter of a reserved well pipe column; wherein:
-the production kit is composed of a production slip, a production close and a production open,
-the fracturing set consists of a fracturing sliding sleeve, a fracturing closing sleeve and a fracturing opening sleeve,
when the shaft is fractured, the fracturing sliding sleeve and the fracturing closing sleeve are opened to form a fracturing channel, then the stratum is subjected to dense net-shaped fracturing, and the fracturing channel is closed through the fracturing sleeve opening;
when the shaft is produced, the production sliding sleeve and the production closed sleeve are opened to form a production channel, oil is produced in the stratum, and the fracturing channel is closed through the production closed sleeve to achieve the sand prevention effect.
Furthermore, the production closed sleeve consists of a counting groove, a positioning groove, a locking elastic sleeve and a shearing pin groove; the production sleeve release consists of a sealing ring, a ball seat sleeve, a counting step and a limiting step; the counting groove on the production closing sleeve is matched with the counting step on the production sleeve opening sleeve, so that the production closing sleeve is opened; the positioning groove can be matched with the limiting step to realize closed sleeve positioning in production; the locking elastic sleeve is matched with the fracturing sliding sleeve to realize the locking of the production closed sleeve.
Furthermore, the fracturing closed sleeve consists of a counting groove, a positioning groove, a shearing pin groove and an elastic claw; the fracturing sleeve disassembling device comprises a sealing ring, a ball seat sleeve, a counting step and a limiting step; the counting groove on the fracturing closing sleeve is matched with the counting step on the fracturing sleeve opening so as to open the fracturing closing sleeve; the positioning groove can be matched with the limiting step to realize the positioning of the fracturing closed sleeve; the elastic claw is matched with the lower connector to realize the locking of the fracturing closing sleeve.
Advantageous effects
1. The invention solves the problem that the fracturing layer section is limited due to the limitation of the inner diameter of a fracturing string and the limitation of the grade difference of a ball seat in the horizontal well development at the present stage, and the effect of fracturing construction cannot be achieved.
2. The invention solves the problem that sand production is frequent after fracturing construction of the oil and gas well, so that equipment is seriously corroded and damaged, shortens the life cycle of a production well and greatly increases the development cost of the oil and gas well.
3. According to the invention, through the staged fracturing sand prevention two-stage sliding sleeve, the staged fracturing sand prevention two-stage sliding sleeve on each layer is provided with the fracturing switch key and the production switch key which are matched with the staged fracturing sand prevention two-stage sliding sleeve, the fracturing pipe column has no level difference, and the infinite layering of the fracturing shaft and the full drift diameter of the reserved pipe column can be realized. After the fracturing construction of every layer is accomplished, send into production switch key, can close the fracturing sliding sleeve to open the production sliding sleeve, and realize the intercommunication of screen pipe and production sliding sleeve, thereby realize the tubular column sand control behind the fracturing.
Drawings
FIG. 1 is a schematic diagram of a full-bore fracturing sand control dual stage mechanism for a staged fracturing wellbore according to the present invention;
FIG. 2 is a schematic diagram of the production process of the present invention;
FIG. 3 is a schematic view of a compression sleeve of the present invention;
figure 4 is a schematic diagram of the production unjacketing and fracturing sliding sleeve structure of the present invention.
Reference numerals:
1. production connector 2, screen tube base pipe 3, sealing ring 4, bridge joint 5, outer protective sleeve 6, filter layer
7. Supporting layer 8, fixed joint 9, sealing ring 10, outer tube 11, production sliding sleeve 12, sealing ring 13 and production closed sleeve
14. Producing sleeve opening 15, sealing ring 16, fracturing sliding sleeve 17, shearing pin 18, 19 sealing ring 20 and fracturing closing sleeve
21. Fracturing sleeve 22, shearing pin 23, sealing ring 24, lower joint 25 and sealing ring
The specific implementation mode is as follows:
the techniques and methods of the present invention are described in detail below with reference to examples and figures, which are provided to illustrate the components of the present invention and are not intended to limit the scope of the invention.
As shown in fig. 1, the invention provides a full-bore sand control two-stage mechanism for a staged fracturing shaft, the shaft comprises a base pipe 2 sleeved in an outer pipe, the base pipe 2 is divided into a production passage and a fracturing passage, and the outer pipe 10 is connected with a well-leaving pipe column through a lower joint 24; the shaft is provided with a double-stage mechanism which can carry out infinite layering compact network fracturing and sand prevention according to the stratum condition, and the double-stage mechanism comprises a production suite for controlling a production channel and a fracturing suite for controlling a fracturing channel; the production suite is connected with the fracturing suite to realize infinite layering of a fractured shaft and full drift diameter of a reserved well pipe column; wherein:
the production kit is composed of a production sliding sleeve 11, a production closing sleeve 13 and a production opening sleeve 14,
the fracturing kit is composed of a fracturing sliding sleeve 16, a fracturing closing sleeve 20 and a fracturing opening sleeve 21,
when a shaft is fractured, the fracturing sliding sleeve 16 and the fracturing closing sleeve 20 are opened to form a fracturing channel, then dense and net-shaped fracturing is carried out on the stratum, and the fracturing channel is closed through the fracturing opening sleeve 21;
when a shaft is produced, the production sliding sleeve 11 and the production closing sleeve 13 are opened to form a production channel, then oil production is carried out on the stratum, and the fracturing channel is closed through the production opening sleeve 14 to achieve the sand prevention effect. The wellbore is described in detail as follows: the base pipe 2 is sleeved into the bridge joint 4 through the connector 1; the bridge joint 4 is respectively sleeved and connected with a fixed joint 8 arranged at one end of the outer tube 10 through a filter layer 6 and a support layer 7; the production closed sleeve 13 of the production kit is connected with the production sliding sleeve 11 in a sleeved mode, and the production sliding sleeve 11 is in threaded connection with the fracturing sliding sleeve 16 through a shearing pin; the fracturing sliding sleeve 16 is connected with the fracturing closed sleeve 20 through a shearing pin 17; wherein: the connecting joint 1 is in threaded connection with the base pipe 2 through an API oil pipe, the connecting joint 1 is connected with the bridge joint 4 in a sleeved mode, and the sealing ring 3 seals the connecting joint 1 and the bridge joint 4. The bridge joint 4 and the outer protective sleeve 5 are welded; the fixed joint 8 is welded with the outer protective sleeve 5; the fixed joint 8 is connected with the outer cylinder 10 in a sleeved mode, and the sealing ring 9 is used for sealing the fixed joint 8 and the outer cylinder 10; the screen pipe base pipe 2 is in threaded connection with the production sliding sleeve 11 through an API oil pipe; the production sliding sleeve 11 is in threaded connection with the fracturing sliding sleeve 16, and the sealing ring 15 is used for sealing the production sliding sleeve 11 and the fracturing sliding sleeve 16; the production closing sleeve 13 is sleeved into the production sliding sleeve 11, and the sealing ring 12 realizes sealing between the production closing sleeve 13 and the production sliding sleeve 11; the shear pin 17 fixes the production closing sleeve 13 and the fracturing sliding sleeve 16; the fracturing sliding sleeve 16 is in threaded connection with the lower connector 24, and the sealing ring 23 is used for sealing the fracturing sliding sleeve 16 and the lower connector 24; the shear pin 22 secures the frac closure sleeve 20 to the frac sliding sleeve 16.
As shown in fig. 2, the production sleeve 13 is composed of a counting groove 1301, a positioning groove 1302, a locking elastic sleeve 1303 and a shearing pin groove 1304; as shown in fig. 4, the production sleeve release is composed of a sealing ring 1401, a ball seat sleeve 1402, a counting step 1403 and a limiting step 1404; the counting groove 1301 on the production closing sleeve 13 is matched with the counting step 1403 on the production sleeve opening 14, so that the production closing sleeve is opened; the positioning groove 1302 can be matched with a limiting step to realize closed sleeve positioning in production; the locking elastic sleeve 1303 is matched with the fracturing sliding sleeve 16 to realize the locking of the production closed sleeve 13.
As shown in fig. 3, the fracturing sleeve 20 is composed of a counting groove 2001, a positioning groove 2003, a shear pin groove 2002 and elastic claws 2004; as shown in fig. 4, the fracturing sleeve 21 is composed of a sealing ring 2101, a ball sleeve 2102, a counting step 2103 and a limiting step 2104; the counting groove 2001 on the fracturing closing sleeve 20 is matched with the counting step 2103 on the fracturing opening sleeve 21, so that the fracturing closing sleeve 21 is opened; the positioning groove 2003 can be matched with the limiting step 2104 to realize the positioning of the fracturing close sleeve 21; the resilient fingers 2004 cooperate with the lower tabs 24 to effect locking of the frac sleeve 20.
The invention changes the limitation of the number of the subsection layers of the construction well caused by the limitation of the inner diameter of the fracturing pipe column and the limitation of the ball seat in the traditional horizontal underground fracturing construction process, and can not realize one-layer multi-cluster fracturing and infinite subsection fracturing. Infinite layering of the shaft and full drift diameter of the shaft can be realized. Not only is beneficial to the formation of compact reticular cracks in the fracturing layer section, but also improves the fracturing construction effect. And after each layer of fracturing construction is finished, the corresponding production sliding sleeve of each layer is opened, so that the communication between the production channel and the infinite-grade full-path staged fracturing sand control double-stage sliding sleeve can be realized, and the later-stage sand control of a shaft is realized. The practical application process of the invention is as follows:
1) setting a staged fracturing sand control pipe column: the connection sequence of the pipe string is from bottom to top, and the pipe string sequentially comprises a floating shoe, a shaft isolation valve, an infinite full-drift-diameter staged fracturing sand control double-stage sliding sleeve of a corresponding layer section, an open hole fracturing packer, a staged fracturing sand control double-stage sliding sleeve corresponding to each layer and a top suspension fracturing packer.
2) And after the setting of the staged fracturing sand control pipe column is finished, fracturing construction is carried out on the lowermost layer. And (3) putting the fracturing sleeve corresponding to the lowermost layer into the fracturing sleeve, and matching the fracturing sleeve of the lowermost layer with the fracturing sliding sleeve of the lowermost layer, so as to open the fracturing sliding sleeve of the lowermost layer and start to implement fracturing construction on the lowermost layer. After fracturing construction is completed, production sleeve opening corresponding to the lowermost production sleeve closing is put into the wellhead, and after production sleeve opening positioning, the lowermost production sliding sleeve is opened. When the production sliding sleeve is opened, the production sliding sleeve closing sleeve can close the fracturing sliding sleeve, so that the lowest fracturing channel is closed. After the production sliding sleeve is opened, the production channel is communicated with the double-layer sieve tube, and oil or natural gas enters the production sliding sleeve through the double-layer sieve tube so as to enter a production shaft.
3) And performing fracturing construction on each interval of the shaft according to the procedures.
4) After fracturing construction of all intervals is completed, because fracturing closed sleeves are adopted to fracture each layer, after fracturing construction is completed, well channels are left to be full drift diameters. The operation of drilling and grinding ball seats at the later stage is not needed, and the production can be directly switched to.
5) If the water outlet of a certain interval is found to be serious in the later period, a special sliding sleeve opening and closing tool can be put into the continuous oil pipe or the production oil pipe to close the production sliding sleeve of the interval with serious water outlet, so that the production channel of the interval is closed, the water outlet rate of the production well is reduced, and the recovery ratio of the production well is improved.
Claims (3)
1. A full-bore sand control two-stage mechanism for a staged fracturing shaft comprises a base pipe sleeved in an outer pipe, wherein the base pipe is divided into a production channel and a fracturing channel, and the outer pipe is connected with a well remaining pipe column through a lower joint; the device is characterized in that a double-stage mechanism capable of carrying out infinite-stage layering compact network fracturing and sand prevention is arranged on the shaft according to the stratum condition, and the double-stage mechanism comprises a production suite for controlling a production channel and a fracturing suite for controlling a fracturing channel; the production suite is connected with the fracturing suite to realize infinite layering of a fractured shaft and full drift diameter of a reserved well pipe column; wherein:
-the production kit is composed of a production slip, a production close and a production open,
-the fracturing set consists of a fracturing sliding sleeve, a fracturing closing sleeve and a fracturing opening sleeve,
when the shaft is fractured, the fracturing sliding sleeve and the fracturing closing sleeve are opened to form a fracturing channel, then the stratum is subjected to dense net-shaped fracturing, and the fracturing channel is closed through the fracturing sleeve opening;
when the shaft is produced, the production sliding sleeve and the production closed sleeve are opened to form a production channel, then oil is produced in the stratum, and the fracturing channel is closed through the production closed sleeve to achieve the sand prevention effect.
2. The full-bore sand control double-stage mechanism for the staged fracturing string as claimed in claim 1, wherein: the production closed sleeve consists of a counting groove, a positioning groove, a locking elastic sleeve and a shearing pin groove; the production sleeve release consists of a sealing ring, a ball seat sleeve, a counting step and a limiting step; the counting groove on the production closing sleeve is matched with the counting step on the production sleeve opening sleeve, so that the production closing sleeve is opened; the positioning groove can be matched with the limiting step to realize closed sleeve positioning in production; the locking elastic sleeve is matched with the fracturing sliding sleeve to realize the locking of the production closed sleeve.
3. The full-bore sand control double-stage mechanism for the staged fracturing string as claimed in claim 1, wherein: the fracturing closed sleeve consists of a counting groove, a positioning groove, a shearing pin groove and an elastic claw; the fracturing sleeve disassembling device comprises a sealing ring, a ball seat sleeve, a counting step and a limiting step; the counting groove on the fracturing closing sleeve is matched with the counting step on the fracturing sleeve opening so as to open the fracturing closing sleeve; the positioning groove can be matched with the limiting step to realize the positioning of the fracturing closed sleeve; the elastic claw is matched with the lower connector to realize the locking of the fracturing closing sleeve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011203589.7A CN112127855B (en) | 2020-11-02 | 2020-11-02 | Full latus rectum sand control doublestage mechanism to segmentation fracturing pit shaft |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011203589.7A CN112127855B (en) | 2020-11-02 | 2020-11-02 | Full latus rectum sand control doublestage mechanism to segmentation fracturing pit shaft |
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| CN112127855B CN112127855B (en) | 2024-06-25 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113356795A (en) * | 2021-07-20 | 2021-09-07 | 中海石油(中国)有限公司 | Fracturing sand prevention production sliding sleeve and application thereof |
| CN113914832A (en) * | 2021-12-15 | 2022-01-11 | 东营市福利德石油科技开发有限责任公司 | Horizontal well full-drift-diameter infinite-stage fracturing tool |
| CN114837613A (en) * | 2022-05-12 | 2022-08-02 | 安东石油技术（集团）有限公司 | Sand control fracturing ball injection sliding sleeve |
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| CN213869832U (en) * | 2020-11-02 | 2021-08-03 | 天津凯雷油田技术有限公司 | Full latus rectum sand control double-stage mechanism to staged fracturing pit shaft |
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| CN113356795B (en) * | 2021-07-20 | 2022-12-02 | 中海石油(中国)有限公司 | Fracturing sand prevention production sliding sleeve and application thereof |
| CN113914832A (en) * | 2021-12-15 | 2022-01-11 | 东营市福利德石油科技开发有限责任公司 | Horizontal well full-drift-diameter infinite-stage fracturing tool |
| CN114837613A (en) * | 2022-05-12 | 2022-08-02 | 安东石油技术（集团）有限公司 | Sand control fracturing ball injection sliding sleeve |
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