CN114876424A - Separate mining and separate injection string and separate mining and separate injection method - Google Patents
Separate mining and separate injection string and separate mining and separate injection method Download PDFInfo
- Publication number
- CN114876424A CN114876424A CN202210639100.3A CN202210639100A CN114876424A CN 114876424 A CN114876424 A CN 114876424A CN 202210639100 A CN202210639100 A CN 202210639100A CN 114876424 A CN114876424 A CN 114876424A
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- Prior art keywords
- production
- injection
- separate
- oil pipe
- channel
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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
- E21B43/14—Obtaining from a multiple-zone well
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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
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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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Abstract
The invention belongs to the technical field of separate production and separate injection of oil fields, and discloses a separate production and separate injection string and a separate production and separate injection method, wherein the separate production and separate injection string comprises an outer oil pipe, an inner oil pipe, a connecting pipeline, an injection and production double-channel oil pipe and an injection and production allocation tool; the outer oil pipe is inserted in the underground sleeve; the inner oil pipe is inserted into the outer oil pipe; the connecting pipeline is communicated with the inner oil pipe; the injection and production double-channel oil pipe is communicated with the connecting pipeline, and a plurality of development positions are divided along the length direction of the connecting pipeline and comprise a water injection channel and an oil extraction channel which are mutually independent; the injection-production allocation tool is positioned in the injection-production dual-channel oil pipe, the number of the injection-production allocation tool corresponds to the number of layers of the development layer, the injection-production allocation tool comprises a production regulation valve and a water injection regulation valve, the production regulation valve can control the oil production amount, and the water injection regulation valve can control the water injection amount. The separate-mining separate-injection tubular column can achieve the aim of controllable production of oil production and water injection of each development layer, shortens the construction period and reduces the operation cost.
Description
Technical Field
The invention relates to the technical field of separate mining and separate injection of oil fields, in particular to a separate mining and separate injection string and a separate mining and separate injection method.
Background
Along with the requirements of the oil field rolling development and the refined separate-mining and separate-injection working procedure, the oil field development needs to optimize and adjust the injection-production well pattern in real time, and the purposes of development adjustment among layers, separate-mining, separate-layer water injection, separate-section or stage-by-stage transfer injection and the like are achieved. At present, the optimization target of the injection-production well pattern is generally realized by newly drilling or repairing a well, and the mode has the defects of long construction period, high operation cost and the like.
Therefore, a separate production and injection string and a separate production and injection method are needed to solve the above problems.
Disclosure of Invention
According to one aspect of the invention, the invention aims to provide the separate production separate injection string which can realize the aim of controllable production of oil production and water injection of each development layer, shorten the construction period, reduce the operation cost, realize separate production and separate injection of the same well, realize injection and production alternation of any layer of a fixed string, and has the advantages of simple principle, convenient use and wide application range.
In order to achieve the purpose, the invention adopts the following technical scheme:
a separate-production separate-injection pipe column comprises an outer-layer oil pipe, an inner-layer oil pipe, a connecting pipeline, an injection-production double-channel oil pipe and an injection-production allocation tool; the outer oil pipe is inserted into the underground sleeve; the inner oil pipe is inserted into the outer oil pipe; the connecting pipeline is communicated with the inner oil pipe; the injection-production dual-channel oil pipe is communicated with the connecting pipeline, and a plurality of development layers are divided along the length direction of the injection-production dual-channel oil pipe and comprise a water injection channel and an oil extraction channel which are mutually independent; the injection-production allocation tool is arranged in the injection-production dual-channel oil pipe, the number of the injection-production allocation tool corresponds to the number of layers of the development layer, the work of the injection-production allocation tool at different development layers is mutually independent, the injection-production allocation tool comprises a production regulation valve and a water injection regulation valve, the production quantity can be controlled by the production regulation valve, and the water injection quantity can be controlled by the water injection regulation valve.
Optionally, the separate production separate injection string further comprises an injection-production alternate Y joint, the injection-production alternate Y joint is installed at the outlet of the outer oil pipe, the injection-production alternate Y joint comprises an oil production line, the injection-production alternate Y joint is communicated with a connecting pipeline, the connecting pipeline is communicated with the injection-production alternate Y joint, and the injection-production alternate Y joint and the oil production line are arranged at intervals.
Optionally, the injection-production dual-channel oil pipe is connected to the connecting pipeline through the injection-production alternate Y joint, and the inner oil pipe and the injection-production alternate Y joint are positioned through a plug-in sealing element.
Optionally, the separate production separate injection string further comprises an injection-production double-channel positioning sealing element, and the injection-production double-channel positioning sealing element is installed between the injection-production double-channel oil pipe and the connecting pipeline.
Optionally, the injection-production dual-channel oil pipe is divided into the development layers through a plurality of injection-production dual-channel insertion sealing elements, the injection-production dual-channel insertion sealing elements are arranged at intervals, and the injection-production dual-channel insertion sealing elements are inserted into the injection-production dual-channel oil pipe in the direction perpendicular to the length direction of the injection-production dual-channel oil pipe.
Optionally, the separate production separate injection string further comprises a circular plug, and the circular plug is plugged at one end of the injection-production dual-channel oil pipe.
Optionally, the separate production dispensing string further comprises a production packer, and the production packer is clamped between the outer tubing and the downhole casing wall.
According to another aspect of the present invention, it is an object to provide a separate production and separate injection method, which uses the separate production and separate injection string according to any one of the above schemes, including the following steps:
s100, separating development positions;
s200, arranging injection-production allocation tools in the injection-production dual-channel oil pipes corresponding to the development layers;
s300, placing the injection-production dual-channel oil pipe, the connecting pipeline, the injection-production alternate Y joint and the inner layer oil pipe into a downhole sleeve;
s400, adjusting injection and production allocation tools of the development positions, and adjusting water injection quantity and oil production quantity of the development positions.
Optionally, in step S300, sequentially performing:
s310, placing the injection-production dual-channel oil pipe and the connecting pipeline into a downhole sleeve;
s320, assembling an outer oil pipe, and replacing a Y joint and an inner oil pipe by injection and production;
s330, placing the assembled outer oil pipe, the injection-production alternate Y joint and the inner oil pipe into the underground sleeve, and connecting the outer oil pipe, the injection-production alternate Y joint and the inner oil pipe with a connecting pipeline.
Optionally, in step S400, the production regulating valve is adjusted to adjust the oil production amount, and the water injection regulating valve is adjusted to adjust the water injection amount.
The invention has the beneficial effects that:
the separate production and separate injection tubular column provided by the invention is provided with an outer oil pipe, an inner oil pipe and a connecting pipeline to realize oil extraction and water injection processes. The injection-production allocation tool is arranged in the injection-production dual-channel oil pipe, the number of the injection-production allocation tool corresponds to the number of layers of the injection-production layer, the work of the injection-production allocation tool on different development layers is mutually independent, the injection-production allocation tool comprises a production regulation valve and a water injection regulation valve, the production quantity can be controlled by the production regulation valve, and the water injection quantity can be controlled by the water injection regulation valve. By controlling injection and production allocation tools of different development levels, oil production and water injection in different development levels can be respectively carried out, and oil production and water injection in the same development level can also be respectively carried out. The separate-production separate-injection tubular column can achieve the aim of controllable production of oil production and water injection of each development position, shortens the construction period, reduces the operation cost, achieves separate production separate injection in the same well, achieves injection and production alternation of any position of the fixed tubular column, and is simple in principle, convenient to use and wide in application range.
Drawings
FIG. 1 is a schematic diagram of a partial structure of a separate production separate injection string according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a separate production separate injection string according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a first operating state of a separate production separate injection string according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a second operating state of a separate production injection string according to an embodiment of the present invention.
In the figure:
100. an outer oil pipe;
200. an inner layer oil pipe;
300. connecting a pipeline;
400. injecting and extracting a double-channel oil pipe; 410. an injection-production double-channel positioning sealing element; 420. circular blocking;
500. an injection-production blending tool; 510. a mining regulating valve; 511. a first production valve; 512. a second production valve; 513. a third oil recovery valve; 514. a fourth production valve; 520. a water injection regulating valve; 521. a first water injection valve; 522. a second water injection valve; 523. a third water injection valve; 524. a fourth water injection valve;
600. the injection-production alternate Y joint; 610. an oil extraction way;
700. a plug-in seal;
800. producing a packer;
900. and the injection and production double channels are inserted into the sealing element.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
Fig. 1 shows a schematic structural diagram of a part of a separate production dispensing string provided by an embodiment of the present invention, and fig. 2 shows a schematic structural diagram of a separate production dispensing string provided by an embodiment of the present invention. Referring to fig. 1 and 2, the present embodiment provides a separate production tubing string, which includes an outer tubing 100, an inner tubing 200, a connecting pipeline 300, an injection-production dual-channel tubing 400, and an injection-production blending tool 500. The separate-mining separate-injection tubular column can achieve the aim of controllable production of oil extraction and water injection of each development layer, shortens the construction period, reduces the operation cost, realizes separate-mining separate injection of the same well, and realizes injection-mining alternation of any layer of the fixed tubular column.
Specifically, the outer tubing 100 is inserted into a downhole casing; the inner oil pipe 200 is inserted into the outer oil pipe 100; the connecting pipeline 300 is communicated with the inner layer oil pipe 200; the injection-production dual-channel oil pipe 400 is communicated with the connecting pipeline 300, and a plurality of development layers are divided along the length direction of the injection-production dual-channel oil pipe 400 and comprise a water injection channel and an oil extraction channel which are mutually independent; the injection-production allocation tool 500 is arranged in the injection-production dual-channel oil pipe 400, the number of the injection-production allocation tool 500 corresponds to the number of layers of the development layer, the injection-production allocation tools 500 at different development layers work independently, the injection-production allocation tool 500 comprises a production regulating valve 510 and a water injection regulating valve 520, the production regulating valve 510 can control the oil production amount, and the water injection regulating valve 520 can control the water injection amount. The injection-production deployment tool 500 at each development level can work independently, and in this embodiment, the injection-production dual-channel oil pipe 400 is specifically divided into four development levels, as shown in a first level i, a second level ii, a third level iii, and a fourth level iv in fig. 1 and fig. 2.
More specifically, the injection-production blending tool 500 corresponding to the first level i includes a first production valve 511 and a first injection valve 521; the injection-production allocation tool 500 corresponding to the second level ii comprises a second production valve 512 and a second water injection valve 522; the injection-production blending tool 500 corresponding to the third level iii comprises a third production valve 513 and a third water injection valve 523; the injection-production blending tool 500 corresponding to the fourth horizon iv includes a fourth production valve 514 and a fourth injection valve 524.
With continuing reference to fig. 1 and fig. 2, the separate production separate injection string provided in this embodiment further includes an injection-production alternate Y-joint 600, the injection-production alternate Y-joint 600 is installed at an outlet of the outer oil pipe 100, the injection-production alternate Y-joint 600 includes an oil production line 610, the injection-production alternate Y-joint 600 is communicated with the connecting pipeline 300, and the connecting pipeline 300 is communicated with the injection-production alternate Y-joint 600 and is arranged at an interval with the oil production line 610. The oil production channel 610 is used for oil production channels in oil production of one or more of the first horizon i, the second horizon ii, the third horizon iii and the fourth horizon iv, and the connecting pipeline 300 is used as a water injection channel of a separate production injection string.
More specifically, the injection-production dual-channel tubing 400 is connected to the connecting line 300 through the injection-production alternate Y-joint 600, and the inner tubing 200 and the injection-production alternate Y-joint 600 are positioned by the plug-in seal 700. The plug seal 700 prevents leakage between the inner tubing 200 and the injection and production shift Y-joint 600.
More specifically, the separate production separate injection string further comprises an injection-production dual-channel positioning sealing element 410, and the injection-production dual-channel positioning sealing element 410 is installed between the injection-production dual-channel oil pipe 400 and the connecting pipeline 300. The injection-production two-channel positioning sealing element 410 is also provided with an oil production channel and a water injection channel which are independent of each other, so that the oil production process and the water injection process can be conveniently carried out, the water injection channel is communicated with the connecting pipeline 300, and the oil production channel is communicated with the oil production channel 610. The injection-production two-way positioning seal 410 can provide limited protection against leakage between the injection-production two-way tubing 400 and the downhole casing.
More specifically, the injection-production dual-channel oil pipe 400 divides the development layer through a plurality of injection-production dual-channel insertion sealing elements 900, and the plurality of injection-production dual-channel insertion sealing elements 900 are arranged at intervals and inserted into the injection-production dual-channel oil pipe 400 along a direction perpendicular to the length direction of the injection-production dual-channel oil pipe 400. Each injection-production double-channel insertion sealing element 900 is provided with mutually independent injection-production channels, so that the oil extraction process and the water injection process can be conveniently carried out.
Preferably, the separate production separate injection tubular string provided by the embodiment further includes a circular plug 420, and the circular plug 420 is plugged at one end of the injection and production dual-channel oil pipe 400. The round plug 420 can effectively prevent leakage between the lower end opening of the injection-production dual-channel oil pipe 400 and an underground sleeve, and guarantee smooth operation of separate production and separate injection processes in each development layer.
Preferably, the production separation injection string provided by the present embodiment further comprises a production packer 800, and the production packer 800 is clamped between the outer tubing 100 and the downhole casing wall. The production packer 800 is capable of separating a downhole sleeve space from an exterior space.
Fig. 3 is a schematic diagram illustrating a first operating state of a separate production and injection string according to an embodiment of the present invention, and fig. 4 is a schematic diagram illustrating a second operating state of the separate production and injection string according to the embodiment of the present invention. The embodiment also provides a separate mining and separate injection method, and the separate mining and separate injection method adopts the separate mining and separate injection string provided by the embodiment to carry out controllable production of oil extraction and water injection of each development layer.
The separate production and separate injection pipe column comprises the following steps:
s100, separating development positions;
s200, arranging injection-production allocation tools 500 in the injection-production dual-channel oil pipe 400 corresponding to each development layer;
s300, placing the injection-production dual-channel oil pipe 400, the connecting pipeline 300, the injection-production alternate Y-joint 600 and the inner layer oil pipe 200 into a downhole sleeve;
s400, adjusting injection and production allocation tools 500 of the development positions, and adjusting water injection quantity and oil production quantity of the development positions.
Specifically, as shown in fig. 1 to 4, the injection-production dual-channel oil pipe 400 below the injection-production dual-channel positioning sealing element 410 is divided into a first layer I, a second layer II, a third layer III and a fourth layer IV through a layering process. The production separation injection string is set in step S200 and step S300. And lowered into the downhole casing.
Specifically, in step S300, in order:
s310, placing the injection-production dual-channel oil pipe 400 and the connecting pipeline 300 into a downhole sleeve;
s320, assembling the outer oil pipe 100, and arranging an injection-production alternate Y joint 600 and the inner oil pipe 200;
s330, the assembled outer oil pipe 100, the injection-production alternate Y-joint 600 and the inner oil pipe 200 are lowered to a downhole sleeve and connected with the connecting pipeline 300.
More specifically, in step S400, the production regulating valve 510 is adjusted to adjust the oil production amount, and the water injection regulating valve 520 is adjusted to adjust the water injection amount. In this embodiment, the regulation and control of the regulation and control valve 510 and the water injection regulation and control valve 520 are performed by cables, which belong to the prior art and are not described herein again.
More specifically, as shown in fig. 3, according to the oil reservoir requirement, the opening and closing of the production regulating valve 510 and the water injection regulating valve 520 corresponding to each development level are regulated through cable operation, and if the layered production of the first level i and the third level iii and the layered water injection of the second level ii and the fourth level iv need to be realized, the cable operation opens the first oil production valve 511 and the third oil production valve 513, and closes the first water injection valve 521 and the third water injection valve 523. And simultaneously opening a second water injection valve 522 and a fourth water injection valve 524, closing a second oil production valve 512 and a fourth oil production valve 514, and adjusting the opening degree of each valve to realize the allocation of the yield or the water injection amount of different development layers so as to realize separate production and separate injection of the same well. In this case, the water injection path is a path indicated by a solid arrow in fig. 3, and the oil recovery path is a path indicated by a broken arrow in fig. 3.
As shown in fig. 4, if the development level needs to be adjusted to the first level i for exploitation, and the second level ii, the third level iii, and the fourth level iv are injected separately, only cable operation is required, the second oil extraction valve 512 is closed, the second water injection valve 522 is opened, and the opening of the corresponding valve is adjusted, so that the yield or water injection amount allocation of different development levels can be realized, and the separate exploitation and separate injection rotation of the same well and the separate exploitation and separate exploitation of the immobile pipe column can be realized.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a divide and adopt and divide injection tubular column which characterized in that includes:
the outer oil pipe (100), the outer oil pipe (100) is inserted into the downhole sleeve;
the inner oil pipe (200) is inserted into the outer oil pipe (100);
the connecting pipeline (300) is communicated with the inner oil pipe (200);
the injection-production dual-channel oil pipe (400) is communicated with the connecting pipeline (300), and the injection-production dual-channel oil pipe (400) divides a plurality of development positions along the length direction thereof and comprises a water injection channel and an oil extraction channel which are mutually independent;
injection-production allocation tool (500), injection-production allocation tool (500) set up in injection-production dual-channel oil pipe (400), its quantity corresponds the number of piles of development horizon, different the development horizon the work of injection-production allocation tool (500) is mutually independent, injection-production allocation tool (500) is including exploitation regulation and control valve (510) and water injection regulation and control valve (520), oil production can be controlled in exploitation regulation and control valve (510), water injection regulation and control valve (520) can control the water injection volume.
2. The separate production separate injection string according to claim 1, further comprising an injection-production alternate Y joint (600), wherein the injection-production alternate Y joint (600) is installed at an outlet of the outer oil pipe (100), the injection-production alternate Y joint (600) comprises an oil production line (610), the injection-production alternate Y joint (600) is communicated with the connecting pipeline (300), and the connecting pipeline (300) is communicated with the injection-production alternate Y joint (600) and is arranged at an interval with the oil production line (610).
3. The separate production separate injection string according to claim 2, wherein the injection-production dual channel tubing (400) is connected to the connecting tubing (300) through the injection-production alternate Y-joint (600), and the inner tubing (200) and the injection-production alternate Y-joint (600) are positioned by a plug-in seal (700).
4. The separate production separate injection string according to claim 1, further comprising a dual injection-production channel positioning seal (410), wherein the dual injection-production channel positioning seal (410) is installed between the dual injection-production channel oil pipe (400) and the connecting pipeline (300).
5. The separate production separate injection string according to claim 1, wherein the injection-production dual-channel oil pipe (400) is used for dividing the development layer through a plurality of injection-production dual-channel insertion sealing elements (900), and the plurality of injection-production dual-channel insertion sealing elements (900) are arranged at intervals and inserted into the injection-production dual-channel oil pipe (400) along a direction perpendicular to the length direction of the injection-production dual-channel oil pipe (400).
6. The separate production separate injection string according to claim 1, further comprising a circular plug (420), wherein the circular plug (420) is plugged at one end of the injection and production double-channel oil pipe (400).
7. A zonal production tubing string according to any of claims 1-6, further comprising a production packer (800), said production packer (800) being sandwiched between said outer tubing (100) and a downhole casing wall.
8. A separate production and separate injection method, characterized in that the separate production and separate injection pipe column of any one of claims 1 to 7 is adopted, comprising the following steps:
s100, separating development positions;
s200, arranging injection-production allocation tools (500) in the injection-production dual-channel oil pipe (400) corresponding to each development layer;
s300, placing the injection-production dual-channel oil pipe (400), the connecting pipeline (300), the injection-production alternate Y-joint (600) and the inner layer oil pipe (200) into a downhole sleeve;
s400, adjusting injection-production allocation tools (500) of the development levels, and adjusting water injection amount and oil production amount of the development levels.
9. The separate mining and dispensing method according to claim 8, wherein in step S300, the following steps are sequentially performed:
s310, placing the injection-production dual-channel oil pipe (400) and the connecting pipeline (300) into a downhole sleeve;
s320, assembling an outer oil pipe (100), and arranging an injection-production alternate Y joint (600) and an inner oil pipe (200);
s330, the assembled outer oil pipe (100), the injection-production alternate Y-joint (600) and the inner oil pipe (200) are placed in a downhole sleeve and connected with the connecting pipeline (300).
10. The fractionated mining and dispensing method according to any one of claims 8 to 9, wherein in step S400, the production control valve (510) is adjusted to adjust the oil production amount, and the water injection control valve (520) is adjusted to adjust the water injection amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210639100.3A CN114876424A (en) | 2022-06-07 | 2022-06-07 | Separate mining and separate injection string and separate mining and separate injection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210639100.3A CN114876424A (en) | 2022-06-07 | 2022-06-07 | Separate mining and separate injection string and separate mining and separate injection method |
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| CN114876424A true CN114876424A (en) | 2022-08-09 |
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| CN202210639100.3A Pending CN114876424A (en) | 2022-06-07 | 2022-06-07 | Separate mining and separate injection string and separate mining and separate injection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115387766A (en) * | 2022-09-13 | 2022-11-25 | 西安洛科电子科技股份有限公司 | Mining and injection integrated device and separate injection and separate mining method |
| CN115387765A (en) * | 2022-09-13 | 2022-11-25 | 西安洛科电子科技股份有限公司 | Manual-automatic integrated adjustment separate mining instrument and separate mining method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115387765B (en) * | 2022-09-13 | 2024-01-30 | 西安洛科电子科技股份有限公司 | Manual-automatic adjusting separate mining instrument and separate mining method |
| CN115387766B (en) * | 2022-09-13 | 2024-02-06 | 西安洛科电子科技股份有限公司 | Integrated device for production and injection and separate production method |
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