CN107989584B - Injection and production integrated device and method for horizontal well - Google Patents
Injection and production integrated device and method for horizontal well Download PDFInfo
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- CN107989584B CN107989584B CN201610947834.2A CN201610947834A CN107989584B CN 107989584 B CN107989584 B CN 107989584B CN 201610947834 A CN201610947834 A CN 201610947834A CN 107989584 B CN107989584 B CN 107989584B
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- 238000002347 injection Methods 0.000 title claims abstract description 62
- 239000007924 injection Substances 0.000 title claims abstract description 62
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000010793 Steam injection (oil industry) Methods 0.000 claims abstract description 113
- 238000000605 extraction Methods 0.000 claims abstract description 36
- 238000007789 sealing Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 10
- 238000011084 recovery Methods 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 210000001503 joint Anatomy 0.000 claims description 4
- 239000008384 inner phase Substances 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 abstract description 18
- 239000003921 oil Substances 0.000 description 90
- 230000000694 effects Effects 0.000 description 6
- 239000012071 phase Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
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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
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- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Extraction Or Liquid Replacement (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention relates to an oil gas exploitation device for an oil field, in particular to a horizontal well injection and production integrated device. The invention also relates to a method for realizing steam injection and oil extraction by using the injection and oil extraction integrated device. The injection and production integrated device disclosed by the invention is formed by sequentially connecting a first heat insulation oil pipe, a heat insulation underground compensator, a second heat insulation oil pipe, an injection and production integrated pump, a third heat insulation oil pipe, a packer, an oil pipe and at least one steam injection and production unit, and by means of the integrated design of the steam injection and production devices, the steam injection and production of a horizontal well by a casing string are realized, so that the process procedure is simplified, the occurrence of complex situations is avoided, and the contradiction between the uneven use of the horizontal well in the steam injection and production stages can be relieved.
Description
Technical Field
The invention relates to an oil gas exploitation device for an oil field, in particular to a horizontal well injection and production integrated device. The invention also relates to a method for realizing steam injection and oil extraction by using the injection and oil extraction integrated device.
Background
The horizontal well technology is one of the main technologies of heavy oil reservoir thermal recovery and capacity construction at present, but with the increase of huff and puff rounds of heavy oil horizontal wells, the injection steam is caused to rush into along a high-permeability zone and even form steam breakthrough due to the influence of factors such as the heterogeneity of the oil reservoir, the flow resistance of a horizontal well section and the like, so that the steam heat is wasted, the uneven utilization degree is aggravated, and the recovery ratio is finally reduced.
In order to solve the problem of uneven steam injection and heating in the thermal recovery process of the horizontal well, the technology of double-pipe steam injection, multi-point steam injection, sectional steam injection and the like of the horizontal well is sequentially presented in recent years, the contradiction of uneven steam absorption of the horizontal section is relieved, however, the steam quality distribution of each steam outlet point is uneven due to the influence of the flow resistance of the horizontal section and the heterogeneity of an oil reservoir of the steam injection pipe column of the horizontal well, the enthalpy ratio of steam distribution is not matched with the steam flow ratio, and thus, the error on the steam heat distribution is caused. Along with the continuous injection of steam, the internal temperature field of the oil reservoir is continuously changed, so that the seepage rule of the oil reservoir fluid is influenced, in the production stage, a pressure drop sink field exists in the horizontal section by adopting the conventional oil pump general production, and the uneven distribution of flow resistance at the toe end and the heel end of the horizontal section is easily caused due to the high viscosity and condensation effect of thick oil, so that the oil reservoir is unbalanced in use and the development effect is influenced; the problems are the problems which need to be solved in the thermal recovery process of the thick oil horizontal well.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a horizontal well injection and production integrated device. By the integrated device, the steam injection and oil extraction functions can be realized simultaneously in the exploitation process, and the quality distribution of steam flow and the like of each steam outlet point in the steam injection process and the balanced oil drainage of the horizontal section in the oil extraction process can be realized. The invention also relates to a method for injecting steam and extracting oil by using the injection and extraction integrated device.
According to the first aspect of the invention, a horizontal well injection and production integrated device is provided, the integrated device is formed by sequentially connecting a first heat insulation oil pipe, a heat insulation underground compensator, a second heat insulation oil pipe, an injection and production integrated pump, a third heat insulation oil pipe, a packer, an oil pipe and at least one steam injection and production unit, wherein the steam injection and production unit is formed by connecting an equal dryness injection distributor and an equal drainage device, the upper end of the oil pipe is connected with the lower end of the packer, and the lower end of the oil pipe is connected with the equal dryness injection distributor.
As an improvement of the invention, the integrated device comprises a plurality of steam injection oil extraction units, and the adjacent steam injection oil extraction units are connected through insertion sealing.
As another improvement of the invention, the balanced oil drainage device is formed by sequentially connecting an upper joint, a central pipe and a lower joint, wherein an oil drainage valve is arranged on the side wall of the central pipe, and the upper end of the upper joint is connected with the equal dryness injection allocation device.
The outer wall of the central tube is sleeved with a liquid control cover, and two ends of the liquid control cover are respectively fixed by an upper shield and a lower shield; the upper shield is fixedly connected with the central tube through threads, and the lower shield is fixedly positioned with the central tube through pins. The liquid control cover is provided with an oil drain hole.
The oil drain valve is a uniflow valve, and a centralizer is sleeved at the periphery of the central pipe at the lower end of the lower shield.
The packer is a self-compensating thermosensitive packer.
As a further improvement of the invention, the equal dryness injection distributor is formed by connecting a junction hoop and an injection body, one side of the injection body is also provided with a hollow injection branch pipe, the inner cavity of the injection body is also provided with an in-pipe phase separator, the in-pipe phase separator divides the inner cavity of the injection body into two parts of inner cavities, one part of inner cavities is communicated with the inner cavity of the injection branch pipe to form a first injection channel, and the other part of inner cavities form a second injection channel.
The inner cavity of the steam injection branch pipe is also provided with a steam injection valve, a baffle ring and a critical flow nozzle.
The inner cavity of the steam injection body is also provided with a rectifier, and the rectifier is a spiral swirl plate.
According to a second aspect of the present invention, a method for steam injection and oil recovery using an injection and oil recovery integrated device is provided, comprising the following steps:
step 1: assembling and inserting integrated device
Firstly, selecting the same number of steam injection oil extraction units according to the number of oil layers required for steam injection oil extraction;
secondly, connecting and fixing the steam injection oil extraction units, and connecting the plurality of steam injection oil extraction units through inserting and sealing;
thirdly, sequentially connecting the first heat-insulating oil pipe, the heat-insulating underground compensator, the second heat-insulating oil pipe, the injection and production integrated pump, the third heat-insulating oil pipe, the packer, the oil pipe and the assembled steam injection and production unit, so that the steam injection and production integrated device is assembled;
and finally, the integrated device is put into the well, so that the positions of the steam injection oil extraction units correspond to the positions of oil layers needing steam injection oil extraction.
Step 2: equal dryness steam injection
The ground steam injection pipeline is connected, the furnace is opened for steam injection, steam enters the equal dryness distributor from the ground steam injection pipeline, equal dryness distribution of the steam is realized, and equal dryness steam injection is carried out on an oil layer.
Step 3: lowering the sucker rod for production;
after the steam injection is completed, the pumping rod is put into butt joint with the injection and production integrated pump, the pump is lifted to seal the steam injection channel, and the pump is started to enter the production stage.
Compared with the prior art, the invention has the advantages that by integrating the steam injection and oil extraction device, the steam injection and production of the horizontal well by a casing string are realized, the process procedure is simplified, the occurrence of complex conditions is avoided, and the contradiction of uneven use of the horizontal well can be relieved in the steam injection and production stages; meanwhile, through the arrangement of the equal dryness fraction injection allocation device, equal dryness fraction allocation of steam flow of each section is realized, and the enthalpy ratio of steam allocation is ensured to be matched with the steam flow ratio; by means of the arrangement of the balanced oil drainage device, production pressure difference of the horizontal section can be balanced, balanced use of an oil layer of the horizontal section is achieved, and improvement of development effect and improvement of production degree of the horizontal well are facilitated.
Drawings
Fig. 1 is a schematic diagram of a horizontal well injection and production integrated device according to the present invention.
Fig. 2 is a cross-sectional view of the equal dryness injection molding machine of the present invention.
FIG. 3 is a cross-sectional view of an equal dryness fraction dispenser of the present invention.
FIG. 4 is a B-B cross-sectional view of the equal dryness injection molding machine of the present invention.
Fig. 5 is a three-dimensional view of an equal dryness fraction injection molding machine rectifier of the present invention.
Fig. 6 is a half cross-sectional view of the balanced drain of the present invention.
Detailed Description
The detailed description and technical content of the present invention are described below with reference to the accompanying drawings, which are provided for reference and description only, and are not intended to limit the present invention.
FIG. 1 is a schematic diagram of a horizontal well injection and production integrated device of the present invention. The horizontal well injection and production integrated device heat insulation oil pipe 1, the heat insulation underground compensator 2, the second heat insulation oil pipe 3, the injection and production integrated pump 4, the third heat insulation oil pipe 5, the packer 6, the oil pipe 12 and the steam injection and production unit are sequentially connected, wherein the steam injection and production unit is formed by connecting an equal dryness injection allocation device 7 with an equal dryness oil drainage device 8, the upper end of the oil pipe 12 is connected with the lower end of the packer 6, and the lower end of the oil pipe 12 is connected with the equal dryness injection allocation device 7. Adjacent steam injection oil extraction units are connected through an insertion seal 10. The insertion seal 10 is in butt joint with a sealing cylinder of the external packer 9 of the horizontal section, the inner diameter of the sealing cylinder is smaller than that of an oil pipe of the horizontal section, and the insertion seal 10 is in sealing fit with the sealing cylinder, so that the stratum of the horizontal section is sealed and separated according to a development oil layer, each steam injection exploitation unit corresponds to one development oil layer, and the in-pipe partition sealing of the oil layer of the horizontal section is realized. The first heat insulation oil pipe 1, the second heat insulation oil pipe 3 and the third heat insulation oil pipe 5 are matched for use, so that heat loss of the injection and production integrated pipe column in the steam injection process can be reduced, and the produced liquid can be insulated in the recovery process; the heat-insulating underground compensator 2 moves the inner pipe to the inner part of the outer pipe in the steam injection process, and the outer pipe is a heat-insulating oil pipe, so that the inner pipe is positioned in the heat-insulating pipe, heat loss is avoided in the elongation process, and meanwhile, the heat compensation effect is realized, and the generation of thermal stress of a steam injection pipe column is avoided; the injection and production integrated pump 4 can realize the production of primary pipe column steam injection and oil extraction circulation, when in steam injection operation, the plunger is in a pump collision state, hot steam enters the annular space of the pump barrel and the outer working barrel through the steam injection hole, and is injected into the stratum under the pump. When the pump is rotated and pumped, the lifting plunger seals the steam injection hole, and the injection and production integrated pump 4 can pump oil normally. In a preferred embodiment, the packer 6 is a self-compensating thermosensitive packer that can be gradually inflated as the temperature of the steam injection string increases, thereby achieving a packing seal.
As shown in fig. 2-5, the equal dryness injection distributor 7 is formed by connecting a tie 701 with a steam injection body 708, one side of the steam injection body 708 is further provided with a hollow steam injection branch pipe 704, the inner cavity of the steam injection body 708 is further provided with an in-pipe phase separator 703, the inner cavity of the steam injection body 708 is divided into two parts of inner cavities by the in-pipe phase separator 703, one part of inner cavities is communicated with the inner cavity of the steam injection branch pipe 704 to form a first steam injection channel, and the other part of inner cavities form a second steam injection channel to introduce steam into the next steam injection oil extraction unit. The inner cavity of the steam injection branch pipe 704 is also provided with a steam injection valve 705, a baffle ring 706 and a critical flow nozzle 707, so that the steam injection can be directly performed on the oil layer. The inner cavity of the steam injection body 708 is also provided with a rectifier 702, the rectifier 702 is a spiral swirl plate, when two-phase mixed fluid flows through the rectifier 702, due to the difference of the density of heterogeneous substances, the centrifugal force is different, and the centrifugal effect is distributed in the range of different distances from the center of the pipeline at the downstream to form a centrally symmetrical swirl field, so that the two-phase fluid is centrifugally separated. The two end lines of the inner phase separation device 703 in the pipe are in sealing fit with the inner cavity of the steam injection body 708; the inner cavity of the critical flow nozzle 707 is a flow passage with gradually reduced aperture, the part with the smallest aperture is called a throat, a conical diffusion surface is arranged behind the throat, the nozzle can obtain different critical pressure ratios along with the difference of the lengths of the downstream diffusion surfaces, and when the flow speed of the throat reaches the sonic speed, the steam flow is only related to the upstream pressure and the throat aperture and is not influenced by the heterogeneity of the oil layer of the horizontal section; in a preferred embodiment, steam injection valve 705 is a single flow valve that is open during steam injection and closed during production.
As shown in fig. 6, the balanced oil drain device 8 is formed by sequentially connecting an upper joint 801, a central pipe 805 and a lower joint 809, wherein a plurality of oil drain valves 804 are uniformly arranged on the side wall of the central pipe 805, the oil drain valves 804 are uniflow valves, and in the steam injection process, the oil drain valves are in a closed state by means of steam injection pressure difference, and in the production process, the oil drain valves are in an open state by means of production pressure difference. The upper end of the upper joint 801 is connected with the equal dryness injection distributor 7. The outer wall of the central tube 805 is sleeved with a liquid control cover 803, and two ends of the liquid control cover 803 are respectively fixed by an upper shield 802 and a lower shield 806; the upper shield 802 is secured to the center tube 805 by a threaded connection and the lower shield 806 is secured in place to the center tube 805 by pins 807. The liquid control cover 803 is provided with a plurality of oil drain holes 810. In a further preferred embodiment, centralizers 808 are provided around the lower end of the lower shroud 806 and the outer periphery of the center tube 805 to prevent friction between the steam injection and recovery unit and the casing wall.
A method for steam injection and oil recovery using an injection and production integrated device will be described with reference to fig. 1-6, comprising the steps of:
step 1: assembling and inserting integrated device
Firstly, selecting the same number of steam injection oil extraction units according to the number of oil layers required for steam injection oil extraction;
secondly, connecting and fixing the steam injection oil extraction units, wherein a plurality of steam injection oil extraction units are connected through an insertion seal 10, and the extreme end of the steam injection oil extraction unit can be connected with a plug 11;
thirdly, as shown in fig. 1, the first heat-insulating oil pipe 1, the heat-insulating underground compensator 2, the second heat-insulating oil pipe 3, the injection-production integrated pump 4, the third heat-insulating oil pipe 5, the packer 6, the oil pipe 12 and the assembled steam injection-production unit are sequentially connected, so that the steam injection-production integrated device is assembled;
finally, the integrated device is put into the well, and the insertion seal 10 is in sealing fit with the sealing cylinder of the external pipe packer 9, so that the horizontal section is separated according to the development oil layer, and the positions of the steam injection oil extraction units correspond to the positions of the oil layers needing steam injection oil extraction.
Step 2: equal dryness steam injection
The ground steam injection pipeline is connected, the furnace is opened for steam injection, steam enters the injection and production integrated device from the ground steam injection pipeline, in the steam injection process, the inner pipe of the heat insulation underground compensator 2 moves towards the inside of the outer pipe, and the outer pipe is a heat insulation oil pipe, so that the inner pipe is positioned in the heat insulation pipe, heat loss is avoided in the extending process, and meanwhile, the heat compensation effect is achieved, and the generation of thermal stress of a steam injection pipe column is avoided; the self-compensating thermosensitive packer 6 gradually expands and seals along with the temperature rise of the steam injection pipe column, so that the casing sealing above the horizontal section is realized; then, the steam enters an equal dryness distributor 7, so that equal dryness distribution of the steam is realized, and equal dryness steam injection is carried out on an oil layer.
Step 3: lowering the sucker rod for production;
after the steam injection is completed, the pumping rod is put into butt joint with the injection and production integrated pump 4, the pump is lifted to seal the steam injection channel, and the pump is started to enter the production stage.
The foregoing description of the preferred embodiments of the present invention is not intended to limit the scope of the invention, but rather to limit the scope of the invention to the equivalents of the claims to which the invention pertains.
Claims (7)
1. Horizontal well annotates and adopts integrated device, its characterized in that: the integrated device is formed by sequentially connecting a first heat-insulating oil pipe, a heat-insulating underground compensator, a second heat-insulating oil pipe, an injection-production integrated pump, a third heat-insulating oil pipe, a packer, an oil pipe and at least one steam injection oil extraction unit, wherein the steam injection oil extraction unit is formed by connecting an equal dryness injection allocation device with an equal drainage device, the upper end of the oil pipe is connected with the lower end of the packer, and the lower end of the oil pipe is connected with the equal dryness injection allocation device;
the balanced oil drainage device is formed by sequentially connecting an upper joint, a central pipe and a lower joint, the side wall of the central pipe is provided with an oil drainage valve, and the upper end of the upper joint is connected with the equal dryness injection allocation device; the outer wall of the central tube is sleeved with a liquid control cover, and two ends of the liquid control cover are respectively fixed by an upper shield and a lower shield; the upper shield is fixedly connected with the central tube through threads, and the lower shield is fixedly positioned with the central tube through pins; the liquid control cover is provided with an oil drain hole;
the equal dryness injection distributor is formed by connecting a junction hoop and an injection body, one side of the injection body is also provided with a hollow injection branch pipe, the inner cavity of the injection body is also provided with an in-pipe inner phase separator, the inner cavity of the injection body is separated into two parts of inner cavities by the in-pipe inner phase separator, one part of inner cavities is communicated with the inner cavity of the injection branch pipe to form a first steam injection channel, and the other part of inner cavities form a second steam injection channel.
2. The horizontal well injection and production integrated device of claim 1, wherein: the integrated device comprises a plurality of steam injection oil extraction units, and the adjacent steam injection oil extraction units are connected through insertion sealing.
3. The horizontal well injection and production integrated device according to claim 1, wherein the oil drain valve is a uniflow valve, and a centralizer is sleeved at the lower end of the lower shield and the periphery of the central pipe.
4. The horizontal well injection and production integrated device of claim 1, wherein the packer is a self-compensating thermosensitive packer.
5. The horizontal well injection and production integrated device of claim 1, wherein: the inner cavity of the steam injection branch pipe is also provided with a steam injection valve, a baffle ring and a critical flow nozzle.
6. The horizontal well injection and production integrated device of claim 1, wherein: the inner cavity of the steam injection body is also provided with a rectifier, and the rectifier is a spiral swirl plate.
7. A method of steam injection and oil recovery using the injection and production integrated device of any one of claims 1-6, comprising the steps of:
step 1: assembling and inserting integrated device
Firstly, selecting the same number of steam injection oil extraction units according to the number of oil layers required for steam injection oil extraction;
secondly, connecting and fixing the steam injection oil extraction units, and connecting the plurality of steam injection oil extraction units through inserting and sealing;
thirdly, sequentially connecting the first heat-insulating oil pipe, the heat-insulating underground compensator, the second heat-insulating oil pipe, the injection and production integrated pump, the third heat-insulating oil pipe, the packer, the oil pipe and the assembled steam injection and production unit, so that the steam injection and production integrated device is assembled;
finally, the integrated device is put into the well, so that the position of each steam injection oil extraction unit corresponds to the position of an oil layer needing steam injection oil extraction;
step 2: equal dryness steam injection
The ground steam injection pipeline is connected, the furnace is opened for steam injection, steam enters the equal dryness distributor from the ground steam injection pipeline, equal dryness distribution of the steam is realized, and equal dryness steam injection is carried out on an oil layer;
step 3: lowering the sucker rod for production;
after the steam injection is completed, the pumping rod is put into butt joint with the injection and production integrated pump, the pump is lifted to seal the steam injection channel, and the pump is started to enter the production stage.
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| CN201610947834.2A CN107989584B (en) | 2016-10-26 | 2016-10-26 | Injection and production integrated device and method for horizontal well |
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| CN201610947834.2A CN107989584B (en) | 2016-10-26 | 2016-10-26 | Injection and production integrated device and method for horizontal well |
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| CN112424444A (en) | 2018-07-07 | 2021-02-26 | Rgl 油藏管理公司 | Flow control nozzle and system |
| CA3108683A1 (en) * | 2018-08-10 | 2020-02-13 | Rgl Reservoir Management Inc. | Nozzle for steam injection and steam choking |
| CN109854217B (en) * | 2018-12-25 | 2021-05-04 | 天津克睿特维科技发展有限公司 | Thick oil production method integrating heat injection oil production and mechanical oil production |
| CN111946314B (en) * | 2019-05-15 | 2022-12-02 | 中国石油天然气股份有限公司 | Injection and extraction control pipe column for thickened oil horizontal well |
| CN111980647B (en) * | 2019-05-21 | 2022-11-01 | 中国石油天然气股份有限公司 | Unsteady-state steam injection method used during huff and puff and steam drive |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201021662Y (en) * | 2007-02-13 | 2008-02-13 | 胡滨 | A gas injection oil exploration pole pump |
| CN201972682U (en) * | 2011-03-25 | 2011-09-14 | 山东立鑫石油机械制造有限公司 | Gas-injection oil-exploitation tubular column adopting packer technology for horizontal well |
| CN103321622A (en) * | 2013-07-03 | 2013-09-25 | 胜利油田隆迪石油技术(装备)有限责任公司 | Sand draining and oil extracting method in manner of integrating injection and extraction for thermal producing well and device thereof |
| CN104481484B (en) * | 2014-12-26 | 2017-06-20 | 东营市福利德石油科技开发有限责任公司 | Horizontal well in segments Intermittent cyclic steam stimulation note adopts integrated pipe column |
| CN205243488U (en) * | 2015-09-25 | 2016-05-18 | 中国石油化工股份有限公司 | Sand control, notes vapour integrated device |
| CN205243489U (en) * | 2015-09-25 | 2016-05-18 | 中国石油化工股份有限公司 | Steam flow distributor in pit |
| CN206129253U (en) * | 2016-10-26 | 2017-04-26 | 中国石油化工股份有限公司 | Horizontal well is annotated and is adopted integrated device |
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