CN112412400A - Intelligent horizontal well for physical model - Google Patents
Intelligent horizontal well for physical model Download PDFInfo
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- CN112412400A CN112412400A CN202011313915.XA CN202011313915A CN112412400A CN 112412400 A CN112412400 A CN 112412400A CN 202011313915 A CN202011313915 A CN 202011313915A CN 112412400 A CN112412400 A CN 112412400A
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- physical model
- intelligent
- horizontal well
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- 238000007789 sealing Methods 0.000 claims abstract description 30
- 239000012530 fluid Substances 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 17
- 230000007246 mechanism Effects 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000003028 elevating effect Effects 0.000 claims description 4
- 210000004907 gland Anatomy 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 16
- 238000005192 partition Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 abstract description 2
- 238000002474 experimental method Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 5
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
Images
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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
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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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/16—Control means therefor being outside the borehole
-
- 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
- E21B47/00—Survey of boreholes or wells
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention relates to the technical field of oil field underground horizontal well experiment devices, in particular to an intelligent horizontal well for a physical model, which comprises a horizontal shaft and a shaft vertical section connected with the horizontal shaft, wherein at least three sealing partition plates are arranged in the horizontal shaft, the horizontal shaft is sealed into at least three cavities by the three sealing partition plates, and each cavity is internally and correspondingly provided with an execution module; at least three groups of control devices for controlling the execution modules are arranged at the wellhead end of the vertical section of the shaft, and each group of control devices is connected with the execution modules in the corresponding cavities; the underground well body structure reconfiguration device adopts the ground control device to control the working state of the underground execution module, and can selectively switch and adjust a certain production layer section on the ground, thereby realizing well body structure reconfiguration under the condition of not shutting down the well; the water plugging operation mode of the cavity is adopted, the time is short, the pollution to stratum is avoided, the cost is low, and the field operation and implementation are easy; the intelligent control is realized, and the intelligent control system has extremely high effects of field popularization and application and yield improvement.
Description
Technical Field
The invention relates to the technical field of indoor simulation experiment devices for technical development and research of oil field underground horizontal wells, in particular to an intelligent horizontal well for a physical model.
Background
At present, with the large-scale popularization of horizontal well technology and the strategic implementation of beach sea and offshore oil and gas field development, in the oil field development process, layered water shutoff is an important means for solving interlayer contradiction, keeping stratum energy and maintaining long-term stable yield and high yield of an oil field.
The traditional horizontal well water plugging usually adopts a multi-section operation lower pipe column, so that the defects of the following aspects can exist: (1) the operation cost is high; (2) it takes a long time to produce; (3) and multiple times contaminating the formation. The operation mode brings much trouble and difficulty in implementation for field water shutoff, and further brings much inconvenience for field operation.
With the increasing importance of the intelligent well technology in underground dynamic monitoring and production control, the research of China in the aspect of the intelligent well technology is relatively weak. Therefore, the intelligent horizontal well for the physical model is needed to be designed to solve the above problems and deficiencies of the prior art.
Disclosure of Invention
Aiming at the problems, the invention provides the intelligent horizontal well for the physical model, which adopts a water plugging operation mode of a cavity body, has short production time, avoids polluting the stratum, has low cost and is easy to operate and implement on site.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
an intelligent horizontal well for a physical model comprises a horizontal shaft and a shaft vertical section connected with the horizontal shaft, wherein at least three sealing partition plates are arranged in the horizontal shaft, the horizontal shaft is sealed and partitioned into at least three cavities by the three sealing partition plates, and an execution module is correspondingly arranged in each cavity; and at least three groups of control devices for controlling execution modules are arranged at the wellhead end of the vertical section of the shaft, and each group of control devices is connected with the execution modules in the corresponding cavity.
Preferably, every group controlling means includes the flexible axle coupling assembling with flexible axle connection, flexible axle coupling assembling passes through second flexible axle transform hard axle mechanism and is connected with screw thread rotation elevating system, screw thread rotation elevating system passes through the connecting shaft spare and is connected with elevator motor.
Preferably, each execution module comprises a liquid guide pipe and a control cavity connected with the liquid guide pipe, a blocking cap is arranged at the front end of the control cavity, a valve core is installed in the control cavity, one end of the valve core is connected with the blocking cap through a spring, and the other end of the valve core is connected with a flexible shaft through a first flexible shaft conversion hard shaft mechanism.
Preferably, the three liquid guide pipes are integrated in the horizontal shaft and extend to the vertical section of the shaft, and each flexible shaft is arranged in the liquid guide pipe and connected with a corresponding control device at the wellhead end of the vertical section of the shaft.
Preferably, one side of each group of the control devices is correspondingly provided with a wellhead flow rate detector for detecting fluid.
Preferably, a vertical shaft flange and a connecting flange are sequentially arranged at the wellhead end of the vertical section of the shaft, and a sealing gland is arranged on the connecting flange.
Preferably, a horizontal sealing plug and a horizontal well sealing cap are sequentially arranged at the front end part of the horizontal shaft.
Preferably, the flexible shaft connecting assembly is connected with the lifting motor through a motor connecting flange.
The invention has the beneficial effects that:
1. the invention adopts a plurality of sealing clapboards to seal the horizontal shaft into a plurality of cavities, thereby realizing the sectional drainage.
2. The invention controls the linear motion of the flexible shaft through the lifting motor on the ground, thereby controlling the position of the underground valve core in the control cavity and further controlling the size of the inlet.
3. The invention realizes the automatic control of the well fluid at the well mouth by controlling the opening and closing of the valve core through the lifting motor.
4. The invention can detect the size of the fluid in the horizontal well cylinder through the well mouth flow detector, and can judge and analyze the conditions of oil, water, gas and the like of the fluid, thereby realizing intelligent operation and being convenient to use.
5. The invention adopts the water plugging operation mode of the sub-cavity body, has short time, avoids polluting the stratum, has low cost and is easy to operate and implement on site.
6. The invention adopts the control device on the ground to control the working state of the underground execution module and can selectively open and close a certain production layer section on the ground, thereby realizing the reconfiguration of the well body structure under the condition of not closing the well.
7. The invention reduces a large amount of shaft maintenance workload, optimizes the oil extraction mode and the working system, thereby saving the cost and reducing the operation cost.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of a single execution module of the present invention;
FIG. 3 is a schematic diagram of a single set of control devices according to the present invention.
In the figure: 1 horizontal well sealing cap, 2 horizontal sealing plugs, 3 sealing partition plates, 4 horizontal shafts, 5 vertical shaft sections, 6 vertical well flanges, 7 connecting flanges, 8 sealing gland, 9 execution module, 10 plugging caps, 11 control cavities, 12 liquid guide pipes, 13 valve cores, 14 springs, 15 first flexible shaft conversion hard shaft mechanisms, 16 flexible shafts, 17 flexible shaft connecting assemblies, 18 motor connecting flanges, 19 second flexible shaft conversion hard shaft mechanisms, 20 thread rotation lifting mechanisms, 21 connecting shaft pieces, 22 lifting motors, 23 wellhead flow detection meters and 24 cavities.
Detailed Description
The technical solution of the present invention is described below with reference to the accompanying drawings and examples.
Referring to fig. 1-3, the intelligent horizontal well for a physical model comprises a horizontal shaft 4 and a shaft vertical section 5 connected with the horizontal shaft 4, wherein at least three sealing plates 3 are arranged in the horizontal shaft 4, the horizontal shaft 4 is sealed and divided into at least three cavities 24 by the three sealing plates 3, and an execution module 9 is correspondingly arranged in each cavity 24; at least three groups of control devices for controlling the execution modules 9 are arranged at the wellhead end of the vertical section 5 of the shaft, and each group of control devices is connected with the execution modules 9 in the corresponding cavity 24.
In this embodiment, the horizontal shaft 4 can be sealed into at least three cavities 24 by using at least three sealing plates 3, an execution module 9 is arranged in each cavity 24, and the corresponding execution module 9 is controlled by a control device at the shaft end of the vertical section 5 of the shaft, so as to control the size of the inlet, thereby realizing segmented drainage; wherein, the sealing and separating plate 3 can adopt a corrosion-resistant sealing and separating plate 3.
Specifically, referring to fig. 2, each execution module 9 includes a liquid guide tube 12 and a control cavity 11 connected to the liquid guide tube 12, a blocking cap 10 is disposed at the front end of the control cavity 11, a valve core 13 is installed in the control cavity 11, one end of the valve core 13 is connected to the blocking cap 10 through a spring 14, and the other end of the valve core 13 is connected to a flexible shaft 16 through a first flexible shaft conversion hard shaft mechanism 15;
the three liquid guide pipes 12 are all integrated in the horizontal shaft 4 and extend to the vertical section 5 of the shaft, and each flexible shaft 16 is arranged in the liquid guide pipe 12 and is connected with a corresponding control device at the wellhead end of the vertical section 5 of the shaft.
Specifically, referring to fig. 3, each group of the control device includes a flexible shaft connecting assembly 17 connected to a flexible shaft 16, the flexible shaft connecting assembly 17 is connected to a screw rotation lifting mechanism 20 through a second flexible shaft conversion hard shaft mechanism 19, and the screw rotation lifting mechanism 20 is connected to a lifting motor 22 through a connecting shaft member 21.
The vertical shaft section 5 is characterized in that a vertical shaft flange 6 and a connecting flange 7 are sequentially arranged at the well mouth end of the vertical shaft section 5, and a sealing gland 8 is arranged on the connecting flange 7.
The flexible shaft connecting assembly 17 is connected with the lifting motor 22 through a motor connecting flange 18, and the motor connecting flange 18 plays a role in connecting the flexible shaft connecting assembly 17 and the lifting motor 22.
In this embodiment, the at least three liquid guide tubes 12 are respectively integrated in corresponding cavities 24 in the horizontal shaft 4, the flexible shaft 16 is placed in the corresponding liquid guide tubes 12, and the lifting motor 22 controls the linear motion of the flexible shaft 16 connected thereto, so as to control the position of the valve core 13 in the control cavity 11, and further control the size of the fluid inlet; meanwhile, the lifting motor 22 controls the valve core 13 to open and close, so that the wellhead can automatically control the fluid entering the well.
Meanwhile, the control device is adopted to control the working state of the execution module in the embodiment, so that different layers can be selectively switched on and off, and the purpose of producing from a specific layer section is achieved. When coning of water or gas occurs in production, the coning of the water or the gas can be delayed by adjusting the flow rate of the interval; meanwhile, the flow control of each interval can improve the oil-water (gas) front distribution in the oil layer, enlarge the related range and achieve the purpose of improving the ultimate recovery ratio of the oil field.
Specifically, a wellhead flow rate detector 23 for detecting fluid is correspondingly arranged on one side of each group of control devices.
In this embodiment, when the lifting motor 22 opens the valve core 13 through the flexible shaft 16, the fluid in the well is guided to the wellhead end of the vertical section 5 of the shaft through the liquid guide tube 12, and is connected to the wellhead flow detector 23 through the drainage tube, and the size of the fluid in the horizontal shaft can be detected through the wellhead flow detector 23, so that the conditions of oil, water, gas and the like of the fluid in the well can be judged and analyzed; and when the water content in the fluid is detected to be large, namely the oil content is low, the valve core 13 can be controlled to be closed through the lifting motor 22, so that the water plugging operation is realized, the intelligent operation is realized, and the use is convenient.
In addition, the wellhead flow detector 23 can be connected with a computer to store underground monitoring information and the computer, so that an operator can analyze underground fluid conditions conveniently, and the logging workload of the operator is reduced to the maximum extent.
The front end part of the horizontal shaft 4 is sequentially provided with a horizontal sealing plug 2 and a horizontal well sealing cap 1; when the intelligent horizontal well does not work, the horizontal sealing plug 2 and the horizontal well sealing cap 1 can realize the sealing effect between the horizontal shaft 4 and the underground.
When the device is used, only three groups of execution modules 9 and three sealing partition plates 3 are required to be arranged into a horizontal shaft 4 from the wellhead end of the vertical section 5 of the shaft, each group of lifting motors 22 drives the corresponding flexible shaft 16, so that the flexible shaft 16 drives the corresponding valve core 13 connected with the flexible shaft to open and close, the size of a fluid inlet is controlled, and the sealing partition plates 3 are adopted to realize segmented and cavity-divided drainage; meanwhile, the fluid in each cavity is guided to the wellhead end of the vertical section 5 of the shaft through the corresponding liquid guide pipe 12 and is connected to a wellhead flow detector 23 through a drainage pipe, and the size of the fluid in the horizontal shaft can be detected through the wellhead flow detector 23, so that the conditions of oil, water, gas and the like of the fluid in the shaft can be judged and analyzed; and when the water content in the fluid is detected to be large, namely the oil content is low, the valve core 13 can be controlled to be closed through the lifting motor 22, so that the water plugging operation is realized, the intelligent operation is realized, and the use is convenient.
In addition, it should be noted that, the valve core, the lifting motor, the screw thread rotation lifting mechanism, the flexible shaft conversion hard shaft mechanism, the wellhead flow meter, the catheter, the flexible shaft and the like in the embodiment are all not essentially different from the prior art, and therefore, the structure and the operation principle thereof are not explained in detail herein.
In conclusion, the underground well body structure reconfiguration device adopts the control device on the ground to control the working state of the underground execution module and can selectively open and close a certain production layer section on the ground, so that the well body structure reconfiguration is realized under the condition of not closing a well; the water plugging operation mode of the cavity is adopted, the time is short, the pollution to stratum is avoided, the cost is low, and the field operation and implementation are easy; the intelligent control is realized, the operation is simple, the use is convenient, and the intelligent control device has extremely high effects of field popularization and application and yield improvement; by reducing a large amount of shaft maintenance workload and optimizing an oil extraction mode and a working system, the cost is saved and the operating cost is reduced.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (8)
1. An intelligent horizontal well for a physical model comprises a horizontal shaft (4) and a vertical shaft section (5) connected with the horizontal shaft (4), and is characterized in that: at least three sealing plates (3) are arranged in the horizontal shaft (4), the horizontal shaft (4) is sealed and separated into at least three cavities (24) by the three sealing plates (3), and an execution module (9) is correspondingly arranged in each cavity (24); at least three groups of control devices for controlling the execution modules (9) are arranged at the wellhead end of the vertical section (5) of the shaft, and each group of control devices is connected with the execution modules (9) in the corresponding cavities (24).
2. The intelligent horizontal well for the physical model according to claim 1, wherein: every group controlling means includes flexible axle coupling assembling (17) of being connected with flexible axle (16), flexible axle coupling assembling (17) are connected with screw thread rotation elevating system (20) through second flexible axle transform hard axle mechanism (19), screw thread rotation elevating system (20) are connected with elevator motor (22) through even axle piece (21).
3. The intelligent horizontal well for the physical model according to claim 1, wherein: each execution module (9) comprises a liquid guide pipe (12) and a control cavity (11) connected with the liquid guide pipe (12), a blocking cap (10) is arranged at the front end of the control cavity (11), a valve core (13) is installed in the control cavity (11), one end of the valve core (13) is connected with the blocking cap (10) through a spring (14), and the other end of the valve core (13) is connected with a flexible shaft (16) through a first flexible shaft conversion hard shaft mechanism (15).
4. The intelligent horizontal well for the physical model according to claim 3, wherein: the three liquid guide pipes (12) are integrated in the horizontal shaft (4) and extend to the vertical section (5) of the shaft, and each flexible shaft (16) is arranged in the liquid guide pipe (12) and is connected with a corresponding control device at the wellhead end of the vertical section (5) of the shaft.
5. The intelligent horizontal well for the physical model according to claim 2, wherein: and one side of each group of control devices is correspondingly provided with a wellhead flow detection meter (23) for detecting fluid.
6. The intelligent horizontal well for the physical model according to claim 1, wherein: the shaft head end of the vertical section (5) of the shaft is sequentially provided with a vertical shaft flange (6) and a connecting flange (7), and a sealing gland (8) is arranged on the connecting flange (7).
7. The intelligent horizontal well for the physical model according to claim 1, wherein: the front end part of the horizontal shaft (4) is sequentially provided with a horizontal sealing plug (2) and a horizontal well sealing cap (1).
8. The intelligent horizontal well for the physical model according to claim 2, wherein: the flexible shaft connecting assembly (17) is connected with the lifting motor (22) through a motor connecting flange (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011313915.XA CN112412400A (en) | 2020-11-20 | 2020-11-20 | Intelligent horizontal well for physical model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011313915.XA CN112412400A (en) | 2020-11-20 | 2020-11-20 | Intelligent horizontal well for physical model |
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| Publication Number | Publication Date |
|---|---|
| CN112412400A true CN112412400A (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011313915.XA Pending CN112412400A (en) | 2020-11-20 | 2020-11-20 | Intelligent horizontal well for physical model |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6012015A (en) * | 1995-02-09 | 2000-01-04 | Baker Hughes Incorporated | Control model for production wells |
| US20090275415A1 (en) * | 2008-04-30 | 2009-11-05 | Jonathan Ryan Prill | Drive shaft assembly for a downhole motor |
| CN203099047U (en) * | 2013-01-30 | 2013-07-31 | 上海强田液压技术有限公司 | Multiway valve operated remotely |
| US20140341755A1 (en) * | 2011-12-15 | 2014-11-20 | Raise Production, Inc. | Horizontal and vertical well fluid pumping system |
| CN104234638A (en) * | 2013-06-21 | 2014-12-24 | 中国石油天然气股份有限公司 | Casing completion multiple-segment fracturing horizontal well water exploration tubular pile and water exploration method thereof |
| CN108397176A (en) * | 2017-02-08 | 2018-08-14 | 中国石油化工股份有限公司 | A kind of horizontal well injecting type segmentation packing steam injection string and technique |
| CN110617046A (en) * | 2019-10-17 | 2019-12-27 | 中国石油大学(华东) | Shaft device for horizontal well multistage staged fracturing physical simulation experiment |
-
2020
- 2020-11-20 CN CN202011313915.XA patent/CN112412400A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6012015A (en) * | 1995-02-09 | 2000-01-04 | Baker Hughes Incorporated | Control model for production wells |
| US20090275415A1 (en) * | 2008-04-30 | 2009-11-05 | Jonathan Ryan Prill | Drive shaft assembly for a downhole motor |
| US20140341755A1 (en) * | 2011-12-15 | 2014-11-20 | Raise Production, Inc. | Horizontal and vertical well fluid pumping system |
| CN203099047U (en) * | 2013-01-30 | 2013-07-31 | 上海强田液压技术有限公司 | Multiway valve operated remotely |
| CN104234638A (en) * | 2013-06-21 | 2014-12-24 | 中国石油天然气股份有限公司 | Casing completion multiple-segment fracturing horizontal well water exploration tubular pile and water exploration method thereof |
| CN108397176A (en) * | 2017-02-08 | 2018-08-14 | 中国石油化工股份有限公司 | A kind of horizontal well injecting type segmentation packing steam injection string and technique |
| CN110617046A (en) * | 2019-10-17 | 2019-12-27 | 中国石油大学(华东) | Shaft device for horizontal well multistage staged fracturing physical simulation experiment |
Non-Patent Citations (2)
| Title |
|---|
| 伍朝东等: "井下智能找堵水分层采油技术", 《石油天然气学报》 * |
| 王小勇等: "水平井智能分段开采工艺管柱的研制与应用", 《石油机械》 * |
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Application publication date: 20210226 |