CN113931609A - Line-controlled sliding sleeve fracturing technology - Google Patents
Line-controlled sliding sleeve fracturing technology Download PDFInfo
- Publication number
- CN113931609A CN113931609A CN202111536402.XA CN202111536402A CN113931609A CN 113931609 A CN113931609 A CN 113931609A CN 202111536402 A CN202111536402 A CN 202111536402A CN 113931609 A CN113931609 A CN 113931609A
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- China
- Prior art keywords
- sliding sleeve
- line
- fracturing
- control sliding
- control
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- 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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- 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
- E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
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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
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/06—Sleeve valves
Abstract
The invention relates to the field of oil and gas well exploitation, and provides a line control sliding sleeve fracturing technology.A control system sends an instruction to a last-stage line control sliding sleeve after a pipe column is put in, hydraulic oil paths are communicated, a pipeline pressurizes the line control sliding sleeve, a fracturing nozzle is opened, and fracturing construction is carried out; after fracturing construction, the pipeline pressurizes the linear control sliding sleeve again, the fracturing nozzle is closed, the control system sends an instruction to the last-stage linear control sliding sleeve, and the hydraulic oil way is closed; repeating the steps, fracturing the rest intervals, and opening the line-control sliding sleeves of the intervals to produce after all the intervals are completed; the structure is reliable, two pipeline hydraulic switches are adopted, and the switch thrust is high; the invention adopts mechanical metal seal and hydraulic cylinder compensation seal, and the sealing pressure is high; the structure of double liquid cylinders is adopted, and the dropping depth is not affected; the flow area of the fracturing nozzle is large, and no impurity accumulation is generated; the anti-scouring inner pipe is designed, so that the service life is long; and (5) long-time downhole monitoring.
Description
Technical Field
The invention relates to the field of oil and gas well exploitation, in particular to a line control sliding sleeve fracturing technology.
Background
At present, the shale gas resources in China are very rich and have a great development prospect, but the development of related development technologies is in the beginning stage. Shale gas has low porosity and low permeability characteristics in terms of reservoirs, and such characteristics can make shale gas difficult to develop.
The development of shale oil, gas wells and long horizontal wells can be divided into the following fracturing technologies, namely a pitching sliding sleeve fracturing technology, a well cementation sliding sleeve fracturing technology, a bottom seam dragging fracturing technology and a pumping bridge plug fracturing technology. Compared with the existing mainstream technology, the technology for pumping bridge plug fracturing is a technology for pumping bridge plug fracturing, but perforation is needed before each stage of fracturing, so that the operation time is long; the sleeve deforms, so that the bridge plug is difficult to feed; the bridge plug can be dissolved, and the dissolution is not complete; the drillable bridge plug has the problems of abrasion to the casing pipe, limited operation capability of the coiled tubing to the ultra-deep well and the like.
Aiming at the problems, the current demand situation of developing wells is the problems of long-term underground monitoring, casing deformation, deep wells, repeated fracturing and how to control the water outlet of a producing zone.
Disclosure of Invention
The invention aims to provide a line-controlled sliding sleeve fracturing technology for overcoming the defects in the prior art.
The new technical scheme of the invention is as follows: a line-control sliding sleeve fracturing technology is characterized in that a line-control sliding sleeve fracturing device comprises a sealer, a line-control sliding sleeve, a pipeline, a cable, a data acquisition system and a control system, wherein the sealer is installed at a wellhead, one end of a sleeve penetrates through the sealer to be connected with an Christmas tree, the other end of the sleeve is connected with a plurality of line-control sliding sleeves, the end parts of the sleeve are connected with float shoes, the line-control sliding sleeves are connected with the data acquisition system through the pipeline, the line-control sliding sleeves are connected with the control system through the cable, and the line-control sliding sleeves are further provided with fracturing nozzles and electromagnetic decoding; the line control sliding sleeve fracturing technology comprises the following steps: after the tubular column is put in, when a development well needs fracturing construction, a control system sends an instruction to the last stage of the line-control sliding sleeve through a cable, hydraulic oil ways are communicated, and a pipeline pressurizes the line-control sliding sleeve, so that a fracturing nozzle of the line-control sliding sleeve is opened to perform fracturing construction; after fracturing construction is completed, the pipeline pressurizes the linear control sliding sleeve again, a fracturing nozzle of the linear control sliding sleeve is closed, a control system sends an instruction to the last stage of linear control sliding sleeve through a cable, and a hydraulic oil way is closed; and repeating the steps, fracturing the rest intervals, and respectively opening the line-control sliding sleeves of the intervals to produce after all the intervals are completed.
The pipeline is a hydraulic control pipeline.
The number of pipelines is 2.
The cable is an armored data cable.
The number of the cables is 1.
The drive-by-wire sliding sleeve is multiple.
The invention has the following beneficial effects: the electromagnetic decoding is used, and the fracturing of more than twenty grades is easily realized; sleeve fracturing improves construction displacement; the drift diameter of the well-remaining pipe column is large, so that the post-treatment is convenient; the sliding sleeve can be closed at the later stage, and production (plugging a water outlet layer) or repeated fracturing is controlled; a downhole monitoring service; the risk of fracturing operation is low.
The wire-controlled sliding sleeve adopts two hydraulic control pipelines and a cable to be put into a well along with a tool, an electromagnetic decoder is put into each stage, an instruction is sent out through the ground to control the opening and closing oil circuit of each stage of wire-controlled sliding sleeve, and the opening and closing state of each stage of wire-controlled sliding sleeve is controlled by matching with the ground pressure.
The structure is reliable, two pipeline hydraulic switches are adopted, and the switch thrust is high; mechanical metal sealing and hydraulic cylinder compensation sealing are adopted, and the sealing pressure is high; the structure of double liquid cylinders is adopted, and the dropping depth is not affected; the flow area of the fracturing nozzle is large, and no impurity accumulation is generated; the anti-scouring inner pipe is designed, so that the service life is long; and (5) long-time downhole monitoring.
The floating shoe can flush the well in a positive circulation mode with large discharge capacity if the whole pipe column is blocked when the whole pipe column is put in, so that the smooth putting in of the pipe column is guaranteed, and a circulation channel is provided for a well cementation process.
The system has the advantages of providing the functions of secondary fracturing and production water control, saving the investment of repeated well arrangement, realizing long-term monitoring service of the well bottom and providing help for long-term matching with the well mouth for remote control and intelligent regulation to control the production of the well.
Drawings
Fig. 1 is a schematic view of the connection structure of the present invention.
Fig. 2 is a structural schematic diagram of the wire control sliding sleeve.
Wherein: 1. the device comprises a sealer, 2, a sleeve, 3, a drive-by-wire sliding sleeve, 301, a fracturing nozzle, 302, an electromagnetic decoder, 4, a pipeline, 5, a cable, 6, a floating shoe, 7, a data acquisition system, 8 and a control system.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
A line-control sliding sleeve fracturing technology is characterized in that a line-control sliding sleeve fracturing device comprises a sealer 1, a line-control sliding sleeve 3, a pipeline 4, a cable 5, a data acquisition system 7 and a control system 8, wherein the sealer 1 is installed at a wellhead, one end of a sleeve 2 penetrates through the sealer 1 to be connected with a Christmas tree, the other end of the sleeve 2 is connected with a plurality of line-control sliding sleeves 3, the end parts of the sleeve 2 are connected with a float shoe 6, the line-control sliding sleeve 3 is connected with the data acquisition system 7 through the pipeline 4, the line-control sliding sleeve 3 is connected with the control system 8 through the cable 5, and a fracturing nozzle 301 and an electromagnetic decoding 302 are further arranged on the line-control sliding sleeve 3; the line control sliding sleeve fracturing technology comprises the following steps: after a pipe column is put in, when a development well needs fracturing construction, a control system 8 sends an instruction to the last-stage line-control sliding sleeve 3 through a cable 5, hydraulic oil ways are communicated, and a pipeline 4 pressurizes the line-control sliding sleeve 3, so that a fracturing nozzle 301 of the line-control sliding sleeve 3 is opened to perform fracturing construction; after fracturing construction is completed, the pipeline 4 pressurizes the linear control sliding sleeve 3 again, the fracturing nozzle 301 of the linear control sliding sleeve 3 is closed, the control system 8 sends an instruction to the last stage of linear control sliding sleeve 3 through the cable 5, and a hydraulic oil way is closed; and repeating the steps, fracturing the rest intervals, and respectively opening the line-control sliding sleeves 3 of the intervals to produce after all the intervals are completed.
The pipeline 4 is a hydraulic control pipeline.
The number of the pipelines 4 is 2.
The cable 5 is an armored data cable.
The number of the cables 5 is 1.
The wire control sliding sleeve 3 is multiple.
Use electromagnetism to decode 302 and realize more than twenty grades of fractures, provide the function of secondary fracturing and production accuse water, need not to go into any instrument in the sleeve pipe during fracturing construction, reduce fracturing construction operation risk, facilitate for the production of long-term cooperation well head remote control intelligent regulation control well.
Claims (6)
1. A line-control sliding sleeve fracturing technology is characterized in that a line-control sliding sleeve fracturing device comprises a sealer, a line-control sliding sleeve, a pipeline, a cable, a data acquisition system and a control system, wherein the sealer is installed at a wellhead, one end of a sleeve penetrates through the sealer to be connected with an Christmas tree, the other end of the sleeve is connected with a plurality of line-control sliding sleeves, the end parts of the sleeve are connected with float shoes, the line-control sliding sleeves are connected with the data acquisition system through the pipeline, the line-control sliding sleeves are connected with the control system through the cable, and the line-control sliding sleeves are further provided with fracturing nozzles and electromagnetic decoding; the method is characterized in that: the line control sliding sleeve fracturing technology comprises the following steps: after the tubular column is put in, when a development well needs fracturing construction, a control system sends an instruction to the last stage of the line-control sliding sleeve through a cable, hydraulic oil ways are communicated, and a pipeline pressurizes the line-control sliding sleeve, so that a fracturing nozzle of the line-control sliding sleeve is opened to perform fracturing construction; after fracturing construction is completed, the pipeline pressurizes the linear control sliding sleeve again, a fracturing nozzle of the linear control sliding sleeve is closed, a control system sends an instruction to the last stage of linear control sliding sleeve through a cable, and a hydraulic oil way is closed; and repeating the steps, fracturing the rest intervals, and respectively opening the line-control sliding sleeves of the intervals to produce after all the intervals are completed.
2. The line-controlled sliding sleeve fracturing technology of claim 1, wherein: the pipeline is a hydraulic control pipeline.
3. A line controlled sliding sleeve fracturing technique as claimed in claim 1 or 2, wherein: the number of pipelines is 2.
4. The line-controlled sliding sleeve fracturing technology of claim 1, wherein: the cable is an armored data cable.
5. The line-controlled sliding sleeve fracturing technology of claim 1 or 4, wherein: the number of the cables is 1.
6. The line-controlled sliding sleeve fracturing technology of claim 1, wherein: the drive-by-wire sliding sleeve is multiple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111536402.XA CN113931609A (en) | 2021-12-16 | 2021-12-16 | Line-controlled sliding sleeve fracturing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111536402.XA CN113931609A (en) | 2021-12-16 | 2021-12-16 | Line-controlled sliding sleeve fracturing technology |
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| Publication Number | Publication Date |
|---|---|
| CN113931609A true CN113931609A (en) | 2022-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111536402.XA Pending CN113931609A (en) | 2021-12-16 | 2021-12-16 | Line-controlled sliding sleeve fracturing technology |
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| CN (1) | CN113931609A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115749683A (en) * | 2022-12-26 | 2023-03-07 | 西南石油大学 | Decoding equipment and method for controlling multilayer sliding sleeve by single pipeline |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160177670A1 (en) * | 2013-12-31 | 2016-06-23 | Sagerider, Incorporated | Method and apparatus for stimulating multiple intervals |
| CN105822274A (en) * | 2015-01-09 | 2016-08-03 | 中国石油天然气股份有限公司 | Horizontal well process pipe column |
| CN105952418A (en) * | 2016-06-29 | 2016-09-21 | 西南石油大学 | Intelligent switching valve for reservoir reformation and production monitoring and control and construction method thereof |
| CN109267971A (en) * | 2018-10-12 | 2019-01-25 | 天津波普能源技术有限公司 | A kind of hydraulic control intelligent well completion water control device |
| CN111648750A (en) * | 2020-05-19 | 2020-09-11 | 东营市福利德石油科技开发有限责任公司 | Underground electro-hydraulic group control intelligent well completion system and self-adaptive measuring and adjusting method thereof |
-
2021
- 2021-12-16 CN CN202111536402.XA patent/CN113931609A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160177670A1 (en) * | 2013-12-31 | 2016-06-23 | Sagerider, Incorporated | Method and apparatus for stimulating multiple intervals |
| CN105822274A (en) * | 2015-01-09 | 2016-08-03 | 中国石油天然气股份有限公司 | Horizontal well process pipe column |
| CN105952418A (en) * | 2016-06-29 | 2016-09-21 | 西南石油大学 | Intelligent switching valve for reservoir reformation and production monitoring and control and construction method thereof |
| CN109267971A (en) * | 2018-10-12 | 2019-01-25 | 天津波普能源技术有限公司 | A kind of hydraulic control intelligent well completion water control device |
| CN111648750A (en) * | 2020-05-19 | 2020-09-11 | 东营市福利德石油科技开发有限责任公司 | Underground electro-hydraulic group control intelligent well completion system and self-adaptive measuring and adjusting method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115749683A (en) * | 2022-12-26 | 2023-03-07 | 西南石油大学 | Decoding equipment and method for controlling multilayer sliding sleeve by single pipeline |
| CN115749683B (en) * | 2022-12-26 | 2023-04-11 | 西南石油大学 | Decoding equipment and method for controlling multilayer sliding sleeve by single pipeline |
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Application publication date: 20220114 |
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