CN115370321B - Intelligent judgment layering blocking removal device - Google Patents
Intelligent judgment layering blocking removal device Download PDFInfo
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- CN115370321B CN115370321B CN202110559695.7A CN202110559695A CN115370321B CN 115370321 B CN115370321 B CN 115370321B CN 202110559695 A CN202110559695 A CN 202110559695A CN 115370321 B CN115370321 B CN 115370321B
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- layered
- injection
- intelligent
- packer
- electromagnetic valve
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- 230000000903 blocking effect Effects 0.000 title claims abstract description 57
- 238000002347 injection Methods 0.000 claims abstract description 81
- 239000007924 injection Substances 0.000 claims abstract description 81
- 238000012545 processing Methods 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 8
- 238000000605 extraction Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 22
- 238000000034 method Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
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
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/06—Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting, e.g. eliminating, the deposition of paraffins or like substances
-
- 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
-
- 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
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
An intelligent judging layered blocking removing device belongs to the field of oil extraction engineering. The device comprises an intelligent layered injection string and an intelligent judgment layered blocking removal injection allocation device, wherein the intelligent judgment layered blocking removal injection allocation device is arranged in the intelligent layered injection string. According to the invention, through the intelligent layered injection pipe column, an intelligent judgment layered blocking removal injection allocation device is adopted, the injection state of each layer is automatically obtained, the blocking removal layer is judged, and layered blocking removal is implemented.
Description
Technical Field
The invention belongs to the field of oil extraction engineering, and particularly relates to an intelligent judgment layering blocking removal device.
Background
In the oil field exploitation process, the oil layer clay expansion and migration and the pollution of injection medium exist along with the extension of the production operation time of the oil-water well, so that the oil layer is blocked, the output of the output well is reduced, and the injection pressure of the injection well is increased. In order to solve the contradiction, the targeted chemical blocking removal is needed, and as the underground oil layer is composed of a plurality of layers, the permeability and the porosity of each layer are greatly different, and the blocking degree of the oil layer is different. Because the underground production condition is complicated and the specific blocking layer is difficult to judge, most production wells are fully blocked by adopting a whole well section, so that the layers with better permeability and not serious blocking inhale more chemical blocking remover, and the blocking removing purpose layers with lower permeability and serious blocking inhale less or do not inhale chemical blocking remover, thereby seriously affecting the blocking removing effect.
Disclosure of Invention
Aiming at the defects, the invention provides a blocking removal device which can intelligently judge the blocking removal layer and perform layered blocking removal, and has good blocking removal effect.
The device for solving the technical problems comprises an intelligent layered injection string and an intelligent judgment layered blocking removal injection allocation device, wherein the intelligent judgment layered blocking removal injection allocation device is arranged in the intelligent layered injection string.
Further, the intelligent layered injection pipe column part is provided with a sleeve, an oil pipe is arranged in the sleeve, a screen pipe is arranged below the oil pipe, a plug is arranged at the bottom of the screen pipe, and a packer is arranged between the oil pipe and the sleeve.
Further, the packer comprises a protection packer, a layered injection allocation packer and a lower packer, and the protection packer, the layered injection allocation packer and the lower packer are sequentially arranged from top to bottom.
Further, a bottom constant pressure ball seat is arranged in the oil pipe, and an intelligent judgment layered blocking removal injection allocation device part is arranged above the bottom constant pressure ball seat.
Further, the intelligent judgment layered blocking removal injection allocation part is provided with an injection allocation device shell body, a central processing unit module is arranged in the injection allocation device shell body, a pressure sensor is arranged below the central processing unit module, and the lower part of the pressure sensor is respectively connected with a central channel electromagnetic valve, a lower channel electromagnetic valve and an upper channel electromagnetic valve.
Further, a power module is arranged in the central processing unit module.
Further, the central channel electromagnetic valve is arranged in the central channel, and the central channel is provided with a liquid outlet b.
Further, the upper channel electromagnetic valve is arranged in the upper channel, and the upper channel is provided with a liquid outlet hole a.
The working process comprises the following steps: dividing an oil layer into an upper oil layer, a middle oil layer and 3 plugging removing intervals of a lower oil layer according to known oil layer conditions, inputting plugging removing conditions, test injection time and working pressure signal values of the intelligent judgment layered plugging removing and distributing device, opening a lower channel electromagnetic valve, closing an upper channel electromagnetic valve and closing a middle channel electromagnetic valve, installing the intelligent judgment layered plugging removing and distributing device to a central pipe working cylinder designated position of a layered plugging distributing packer, forming three independent channels corresponding to upper and lower water injection holes of a packer sealing rubber cylinder, then descending the three independent channels to the designated position along with a layered injection pipe column, installing a ground wellhead flow, injecting clear water into an oil pipe by using a ground pump truck, fully setting the packer after injection pressure reaches a certain value, continuously increasing the pressure to enable a bottom constant pressure ball seat to fall into a lower sieve tube, starting to operate after the intelligent judgment layered plugging removing and distributing device receives working pressure through a pressure sensor, and simultaneously recording the injection pressure of the intelligent judgment layered plugging removing and distributing device through the pressure sensor to store the pressure into the central processor, closing the lower channel electromagnetic valve after the injection time is kept; starting a middle channel electromagnetic valve, starting test injection on a middle oil layer, intelligently judging that the layered blocking removal injection allocation device records test injection pressure through a pressure sensor and stores the test injection pressure into a central processing unit, and closing a lower channel electromagnetic valve after the test injection duration is reached; opening an upper channel electromagnetic valve, starting test injection on an upper oil layer, intelligently judging a layered blocking removal injector, recording test injection pressure through a pressure sensor, storing the test injection pressure into a central processing unit, judging by the central processing unit according to the recorded three-layer test injection pressure value and an input blocking removal condition after the test injection duration is reached, selecting a target layer to be blocked, simultaneously sending an instruction to open an electromagnetic valve corresponding to the blocking removal target layer, closing other electromagnetic valves, starting underground pumping chemical blocking removal agent by a ground pump truck according to the three test injection time, and taking out a layered injection pipe column after the blocking removal process is completed, taking out the intelligently judged layered blocking removal injector, thereby completing the overall process.
The beneficial effects are that: according to the invention, through the intelligent layered injection pipe column, an intelligent judgment layered blocking removal injection allocation device is adopted, the injection state of each layer is automatically obtained, the blocking removal layer is judged, and layered blocking removal is implemented.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
As shown in the figure, the casing 1, the protection packer 2, the oil pipe 3, the injector housing body 4, the central processor module 6, the pressure sensor 7, the central channel electromagnetic valve 8, the lower channel electromagnetic valve 9, the upper channel electromagnetic valve 10, the liquid outlet hole a,11, the layered injection packer 12, the liquid outlet hole b,13, the lower packer 14, the bottom constant pressure ball seat 15, the sieve tube 16, the plug 17, the upper oil layer 18, the middle oil layer 19 and the lower oil layer.
Detailed Description
The invention is further illustrated below with reference to examples.
Example 1
The device that this embodiment adopted includes intelligent layering injection string and intelligent judgement layering and removes stifled injection allocation ware two parts, and intelligent judgement layering is removed stifled injection allocation ware and is set up in intelligent layering injection string. Wherein the intelligent layered injection pipe column part is provided with a sleeve 1, an oil pipe 3 is arranged in the sleeve 1, a screen pipe 15 is arranged below the oil pipe 3, a plug 16 is arranged at the bottom of the screen pipe 15, and a packer is arranged between the oil pipe 3 and the sleeve 1. The packer comprises a protection packer 2, a layered injection allocation packer 11 and a lower packer 13, and the protection packer 2, the layered injection allocation packer 11 and the lower packer 13 are sequentially arranged from top to bottom. The oil pipe 3 is internally provided with a bottom constant pressure ball seat 14, and an intelligent judgment layering blockage removal injection allocation device part is arranged above the bottom constant pressure ball seat 14. The intelligent judgment layering unblocking injection allocation part is provided with an injection allocation device shell body 4, a central processing unit module 5 is arranged in the injection allocation device shell body 4, a pressure sensor 6 is arranged below the central processing unit module 5, and the lower part of the pressure sensor 6 is respectively connected with a central channel electromagnetic valve 7, a lower channel electromagnetic valve 8 and an upper channel electromagnetic valve 9. The central processing unit module 5 is internally provided with a power supply module. The central channel electromagnetic valve 7 is arranged in the central channel, and the central channel is provided with a liquid outlet b12. The upper channel electromagnetic valve 9 is arranged in the upper channel, and a liquid outlet hole a10 is arranged on the upper channel.
Example 2
The working process comprises the following steps: the embodiment is suitable for the oil-water well with the unblocking ground pressure not more than 20MPa and the well depth not more than 2500 m. Dividing an oil layer into an upper oil layer 17 and a middle oil layer 18 according to known oil layer conditions, inputting blocking removing conditions (pressure range or each pressure difference range), test injection duration and working pressure signal values of the intelligent judgment layered blocking removing and distributing device into the intelligent judgment layered blocking removing and distributing device after the lower oil layer 19 and the 3 blocking removing layer segments are formed, opening a lower channel electromagnetic valve 8, closing an upper channel electromagnetic valve 9 and closing a middle channel electromagnetic valve 7, installing the intelligent judgment layered blocking removing and distributing device into a central pipe working cylinder designated position of a layered blocking distributing packer 11 and corresponding to upper and lower water injection holes of a packer sealing rubber cylinder to form three independent channels, pouring clear water into an oil pipe 3 along with a layered injection pipe column, fully setting the packer by using a ground pump truck, continuously increasing the pressure to drop a bottom constant pressure ball seat 14 into a lower sieve tube 15 after the injection pressure reaches a certain value, starting to inject the lower oil layer after the intelligent judgment layered blocking removing and distributing device receives the working pressure through a pressure sensor 6, and simultaneously closing the central channel electromagnetic valve 5 after the intelligent judgment layered blocking removing and distributing device reaches the pressure test tube 6 and the pressure measuring valve 5 is closed; opening a middle channel electromagnetic valve 7, starting test injection on a middle oil layer, intelligently judging that the layered blocking removal injection allocation device records test injection pressure through a pressure sensor 6 and stores the test injection pressure into a central processing unit 5, and closing a lower channel electromagnetic valve 7 after the test injection duration is reached; opening an upper channel electromagnetic valve 9, starting test injection on an upper oil layer, recording test injection pressure by the intelligent judgment layered blocking removal injector through a pressure sensor 6, storing the test injection pressure into a central processing unit module 5, judging by the central processing unit module 5 according to the recorded three-layer test injection pressure value and the input blocking removal condition (pressure range or each lamination difference range), selecting a target layer needing blocking removal, simultaneously sending an instruction to open the electromagnetic valve corresponding to the blocking removal target layer, closing other electromagnetic valves, starting underground pumping chemical blocking removal agent by a ground pump truck according to the three-time test injection time, and after the blocking removal process is completed, taking out a layered injection pipe column, taking out the intelligent judgment layered blocking removal injector, and completing the whole process.
The above-described embodiments are provided for illustration and description of the present invention only and are not intended to limit the invention to the embodiments described. In addition, those skilled in the art will appreciate that the present invention is not limited to the embodiments described above, and that many variations and modifications are possible in light of the teachings of the invention, which variations and modifications are within the scope of the invention as claimed.
Claims (1)
1. The intelligent judgment layered blocking removal device is characterized by comprising an intelligent layered injection pipe column and an intelligent judgment layered blocking removal injection allocation device, wherein the intelligent judgment layered blocking removal injection allocation device is arranged in the intelligent layered injection pipe column;
the intelligent layered injection pipe column part is provided with a sleeve (1), an oil pipe (3) is arranged in the sleeve (1), a screen pipe (15) is arranged below the oil pipe (3), a plug (16) is arranged at the bottom of the screen pipe (15), and a packer is arranged between the oil pipe (3) and the sleeve (1);
The packer comprises a protection packer (2), a layered injection allocation packer (11) and a lower packer (13), and the protection packer (2), the layered injection allocation packer (11) and the lower packer (13) are sequentially arranged from top to bottom;
a bottom constant pressure ball seat (14) is arranged in the oil pipe (3), and an intelligent judgment layering blockage removal injection allocation device part is arranged above the bottom constant pressure ball seat (14);
The intelligent judgment layered blocking removal injection allocation device is characterized in that an injection allocation device shell body (4) is arranged at the part of the intelligent judgment layered blocking removal injection allocation device, a central processing unit module (5) is arranged in the injection allocation device shell body (4), a pressure sensor (6) is arranged below the central processing unit module (5), and the lower part of the pressure sensor (6) is respectively connected with a central channel electromagnetic valve (7), a lower channel electromagnetic valve (8) and an upper channel electromagnetic valve (9);
A power supply module is arranged in the central processing unit module (5);
The central channel electromagnetic valve (7) is arranged in the central channel, and the central channel is provided with a liquid outlet hole b (12);
the upper channel electromagnetic valve (9) is arranged in the upper channel, and the upper channel is provided with a liquid outlet hole a (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110559695.7A CN115370321B (en) | 2021-05-21 | 2021-05-21 | Intelligent judgment layering blocking removal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110559695.7A CN115370321B (en) | 2021-05-21 | 2021-05-21 | Intelligent judgment layering blocking removal device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115370321A CN115370321A (en) | 2022-11-22 |
| CN115370321B true CN115370321B (en) | 2024-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110559695.7A Active CN115370321B (en) | 2021-05-21 | 2021-05-21 | Intelligent judgment layering blocking removal device |
Country Status (1)
| Country | Link |
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| CN (1) | CN115370321B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4494608A (en) * | 1982-12-06 | 1985-01-22 | Otis Engineering Corporation | Well injection system |
| CN2513095Y (en) * | 2001-10-17 | 2002-09-25 | 长春市斯普瑞新技术有限责任公司 | Layered water injection well seal test measuring instrument |
| CN105201473A (en) * | 2015-10-22 | 2015-12-30 | 东北石油大学 | Multiple-oil-layer deep profile control injection device and oil layer deep profile control realizing method thereof |
| CN108121369A (en) * | 2017-12-20 | 2018-06-05 | 中国石油天然气股份有限公司 | Intelligent water injection remote control device and method |
| CN108359436A (en) * | 2018-02-23 | 2018-08-03 | 廊坊开发区森德石油设备有限公司 | A kind of diverting agent and the preparation method and application thereof |
| CN112360414A (en) * | 2020-12-04 | 2021-02-12 | 中国石油天然气股份有限公司 | Three-channel intelligent water injection system |
-
2021
- 2021-05-21 CN CN202110559695.7A patent/CN115370321B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4494608A (en) * | 1982-12-06 | 1985-01-22 | Otis Engineering Corporation | Well injection system |
| CN2513095Y (en) * | 2001-10-17 | 2002-09-25 | 长春市斯普瑞新技术有限责任公司 | Layered water injection well seal test measuring instrument |
| CN105201473A (en) * | 2015-10-22 | 2015-12-30 | 东北石油大学 | Multiple-oil-layer deep profile control injection device and oil layer deep profile control realizing method thereof |
| CN108121369A (en) * | 2017-12-20 | 2018-06-05 | 中国石油天然气股份有限公司 | Intelligent water injection remote control device and method |
| CN108359436A (en) * | 2018-02-23 | 2018-08-03 | 廊坊开发区森德石油设备有限公司 | A kind of diverting agent and the preparation method and application thereof |
| CN112360414A (en) * | 2020-12-04 | 2021-02-12 | 中国石油天然气股份有限公司 | Three-channel intelligent water injection system |
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| Publication number | Publication date |
|---|---|
| CN115370321A (en) | 2022-11-22 |
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