CN114776262B - Underground thermal power generation device for offshore thickened oil thermal recovery and application thereof - Google Patents
Underground thermal power generation device for offshore thickened oil thermal recovery and application thereof Download PDFInfo
- Publication number
- CN114776262B CN114776262B CN202210346469.5A CN202210346469A CN114776262B CN 114776262 B CN114776262 B CN 114776262B CN 202210346469 A CN202210346469 A CN 202210346469A CN 114776262 B CN114776262 B CN 114776262B
- Authority
- CN
- China
- Prior art keywords
- oil
- underground
- safety
- thermal
- packer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
-
- 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
- E21B36/00—Heating, cooling, insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/04—Heating, cooling, insulating arrangements for boreholes or wells, e.g. for use in permafrost zones using electrical heaters
-
- 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
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
-
- 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
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
- E21B43/2401—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection by means of electricity
-
- 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
Landscapes
- 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)
- Engine Equipment That Uses Special Cycles (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses an underground thermal generation device for offshore thick oil thermal recovery and application thereof, wherein the device comprises an underground thermal generation process pipe column, a safety control system and a heating system; the invention realizes the multifunctional combined tubular column structure of conventional electric pump lifting, underground safety control, horizontal section high-power thermodynamic generation, full-well section temperature monitoring, underground pressure monitoring and the like, can realize reservoir heating technology, hot water injection thickened oil exploitation technology and chemical agent auxiliary viscosity reduction technology, improves heat utilization efficiency, reduces operation cost and reduces the requirements on the thermal insulation performance of well completion and oil pipes; meanwhile, the invention meets the offshore safety requirement, and a safety control system and a monitoring system are designed underground, so that the safety of thermal recovery operation and the optimization of a later process scheme can be ensured, and technical support is provided; the downhole thermal generation process can be applied to multiple aspects such as reservoir heating technology, hot water injection thickened oil exploitation technology, chemical agent auxiliary viscosity reduction technology and the like, and has great significance for large-scale development of the thick oil of the Bohai sea.
Description
Technical Field
The invention belongs to the technical field of offshore thickened oil thermal recovery, and particularly relates to an underground thermal power generation device for offshore thickened oil thermal recovery and application thereof.
Background
Because the thick oil has the characteristics of high viscosity, large friction force and the like, the flow resistance in a reservoir and a shaft is large, the thick oil cannot be efficiently mined, and the thick oil is limited by small area of an offshore platform, difficult transportation and the like, so that the thermal mining difficulty of the offshore thick oil is large. The thermal recovery technology mainly adopted at present is a steam huff and puff technology, namely steam is generated on a platform deck and is transmitted and injected into an oil reservoir through a shaft, but the technology has the following problems:
1. the well completion requirement is high, the injection and production string replacement operation is needed in the operation, and the well repair cost is high;
2. the heat efficiency is low, and a great amount of heat loss occurs in the process of transferring steam from a wellhead to the bottom of a well, so that the heat injection quality and the thickened oil exploitation effect are affected;
3. the steam throughput operation is high-temperature (370 ℃) high-pressure (21 MPa) operation, and the operation safety risk is high.
Therefore, an underground thermal generator for offshore thickened oil thermal recovery is required, the thickened oil recovery ratio can be improved, the safety of a shaft is ensured, the operation cost is reduced, and a technical foundation is laid for large-scale thermal recovery development of thickened oil fields.
Disclosure of Invention
The invention newly designs an underground thermal power generation device for offshore thick oil thermal recovery and application thereof according to offshore oil fields and well type characteristics. The invention realizes the aim of thermal recovery of thick oil in offshore oil fields under the conditions of not changing the existing well completion structure and not increasing the existing space of the offshore oil fields. The device and the method can be applied to various thickened oil thermal recovery technologies, and multi-mode recovery modes are realized according to different well conditions and requirements. Meanwhile, the device and the method comprise underground safety control and testing equipment, ensure the production safety of thickened oil thermal recovery while realizing the thickened oil thermal recovery, acquire underground parameters of a full shaft and provide technical support for the optimization of a later process scheme.
The technical scheme adopted by the invention is as follows:
an underground thermal power generation device for thermal recovery of marine thick oil comprises an underground thermal power generation process pipe column, a safety control system and a heating system;
the downhole thermal generation process pipe column comprises a first oil pipe (3-1/2 "), an electric pump cable, a Y joint, an oil pipe nipple, an electric pump unit, a second oil pipe (2-7/8"), a cable penetrating through the Y joint, a pipe with a hole (2-7/8') and a lead-in angle;
the upper part of the Y joint is connected with a first oil pipe (3-1/2 '), the upper part of the oil pipe nipple is connected with the Y joint, the lower part of the oil pipe nipple is connected with the electric pump unit, the upper part of the second oil pipe (2-7/8 ') is connected with the Y joint, the lower part of the second oil pipe is connected with a cable penetrating through the Y joint, the upper part of the perforated pipe (2-7/8 ') is connected with the cable penetrating through the Y joint, the lower part of the perforated pipe is connected with the inclined guiding pipe, and the lower part of the electric pump cable is connected with the electric pump unit.
The safety control system comprises a safety valve hydraulic control pipeline, a packer hydraulic control pipeline, a safety valve, an exhaust valve hydraulic control pipeline, an exhaust valve and a packer;
the safety valve and the packer are both arranged on a first oil pipe (3-1/2'), the safety valve is positioned above the packer, the lower part of the exhaust valve is connected with the packer, the hydraulic control pipeline of the safety valve is connected with the safety valve, the hydraulic control pipeline of the packer is connected with the packer, and the hydraulic control pipeline of the exhaust valve is connected with the exhaust valve.
In the heating system, a conductor is connected with insulating materials, three groups of insulating materials are in contact with each other and are connected with an outer armor, a capillary tube, an optical fiber outer armor and a thermocouple outer armor are arranged between the three groups of insulating materials and the outer armor, an optical fiber core is arranged in the optical fiber outer armor, and a thermocouple wire is arranged in the thermocouple outer armor.
The underground thermal generator for thermal recovery of marine thick oil is applied to the exploitation of thick oil by injecting hot water, cold water injected from the ground is heated into hot water by an underground electric heating technology to carry out hot water flooding exploitation, and the operation safety is ensured by an underground parameter monitoring and safety control system.
The application of the underground thermal generator for offshore thick oil thermal recovery in chemical agent assisted viscosity reduction is that the underground electric heating technology is used for heating a reservoir layer, the requirement of the chemical agent on temperature is met to improve the activity of the chemical agent and realize thick oil recovery, the underground production condition is observed in real time through the underground parameter monitoring technology, and the operation safety of a shaft is ensured.
The underground thermal generator for offshore thick oil thermal recovery is applied to heating of a reservoir, underground electric heating generation power is controlled by adjusting the output power (300-3000 kw) of a ground control cabinet, the reservoir is directly heated, so that the temperature of the reservoir and crude oil is increased, the viscosity is reduced, the reservoir and the crude oil are enabled to have fluidity, an electric pump can be started to conduct lifting operation, synchronous operation of underground thermal generation and lifting is achieved, the temperature of the bottom of the well is observed in real time through a monitoring technology, coking of the crude oil is avoided, and safety of wellbore operation is ensured.
The invention has the advantages and positive effects that: compared with the prior art, the scheme has the advantages that the multifunctional combined tubular column structure for realizing conventional electric pump lifting, underground safety control, horizontal section high-power thermal generation, full-well section temperature monitoring, underground pressure monitoring and the like is realized, the reservoir heating technology, hot water injection thickened oil exploitation technology and chemical agent auxiliary viscosity reduction technology can be realized, the heat utilization efficiency is improved, the operation cost is reduced, and the requirements on the thermal insulation performance of a well completion and an oil pipe are reduced; meanwhile, the invention meets the offshore safety requirement, and a safety control system and a monitoring system are designed underground, so that the safety of thermal recovery operation and the optimization of a later process scheme can be ensured, and technical support is provided; the downhole thermal generation process can be applied to multiple aspects such as reservoir heating technology, hot water injection thickened oil exploitation technology, chemical agent auxiliary viscosity reduction technology and the like. The implementation of the scheme has great significance for large-scale development of the Bohai sea thick oil.
Drawings
FIG. 1: the invention discloses a structural schematic diagram of an underground thermal power generation device for offshore thick oil thermal recovery.
Fig. 2: the invention discloses a novel heating system (power 300-3000 kw) cross section schematic diagram.
Wherein: a-1: first oil pipe, A-2: electric pump cable, A-3: y joint, A-4: oil pipe nipple joint, A-5: electric pump unit, A-6: second oil pipe, A-7: the cable passes through the Y joint, A-8: perforated tube, a-9: beveling, B-1: safety valve pilot operated line, B-2: packer pilot-operated pipeline, B-3: safety valve, B-4: vent valve pilot operated line, B-5: exhaust valve, B-6: packer, C: heating system, C-1: outer armor of cable, C-2: capillary, C-3: insulating material, C-4: conductor, C-5: thermocouple outer armor, C-6: thermocouple wire, C-7: outer armor of optical fiber, C-8: an optical fiber core.
Other relevant drawings may be made by those of ordinary skill in the art from the above figures without undue burden.
Detailed Description
In order to make the person skilled in the art better understand the solution of the present invention, the following describes the solution of the present invention with reference to specific embodiments.
Examples
As shown in figure 1, the underground thermal generation device for offshore thick oil thermal recovery consists of an underground thermal generation process pipe column A, a safety control system B and a heating system C (with power of 300-3000 kw).
The underground heat generation process pipe column A comprises a first oil pipe A-1 (3-1/2), an electric pump cable A-2, a Y joint A-3, an oil pipe nipple A-4, an electric pump unit A-5, a second oil pipe A-6 (2-7/8), a cable passing through Y joint A-7, a perforated pipe A-8 (2-7/8') and an inclined guiding A-9;
the upper part of the Y joint A-3 is connected with a first oil pipe A-1 (3-1/2 '), the upper part of the oil pipe nipple A-4 is connected with the Y joint A-3, the lower part of the oil pipe nipple A-4 is connected with an electric pump unit A-5, the upper part of the second oil pipe A-6 (2-7/8') is connected with the Y joint A-3, the lower part of the second oil pipe A-6 (2-7/8 ') is connected with a cable penetrating Y joint A-7, the upper part of the perforated pipe A-8 (2-7/8') is connected with the cable penetrating Y joint A-7, the lower part of the perforated pipe A-8 is connected with an inclined angle A-9, and the lower part of the electric pump cable A-2 is connected with the electric pump unit A-5.
The safety control system B comprises a safety valve hydraulic control pipeline B-1, a packer hydraulic control pipeline B-2, a safety valve B-3, an exhaust valve hydraulic control pipeline B-4, an exhaust valve B-5 and a packer B-6;
the safety valve B-3 and the packer B-6 are arranged on the first oil pipe A-1 (3-1/2'), the safety valve B-3 is positioned above the packer B-6, the lower part of the exhaust valve B-5 is connected with the packer B-6, the safety valve hydraulic control pipeline B-1 is connected with the safety valve B-3, the packer hydraulic control pipeline B-2 is connected with the packer B-6, and the exhaust valve hydraulic control pipeline B-4 is connected with the exhaust valve B-5.
The heating system is characterized in that the C-4 conductors are connected with the C-3 insulating materials, the three groups of C-3 insulating materials are in contact with each other and are connected with the C-1 outer armor, a C-2 capillary tube, a C-7 optical fiber outer armor and a C-5 thermocouple outer armor are arranged between the C-4 groups of insulating materials and the C-1 outer armor, a C-8 optical fiber core is arranged in the C-7 optical fiber outer armor, and a C-6 thermocouple wire is arranged in the C-5 thermocouple outer armor.
The working principle of the invention is as follows:
when the invention is applied to the hot water injection thick oil exploitation technology, low-temperature water is injected into a stratum by an oil pipe, meanwhile, the working power (300-3000 kw) of an underground heat generating device is regulated through a ground control cabinet, electric energy is transferred into underground and then converted into heat energy, and the generated heat energy heats normal-temperature water injected by the oil pipe and flows to the depth of the stratum to flow so as to improve the temperature of the stratum and reduce the viscosity of thick oil, thereby achieving the aim of thick oil exploitation. Meanwhile, underground temperature and pressure are monitored in real time through underground parameter monitoring equipment integrated in the cable, when emergency events such as temperature rising, pressure rising and the like occur, pressure can be pumped through the ground, and a hydraulic control pipeline controls a safety valve, a packer and an exhaust valve to be closed so as to block an oil pipe channel and an oil sleeve annular channel.
When the invention is applied to the technology of chemical agent auxiliary viscosity reduction, the oil pipe is used for injecting chemical agent solution into the stratum, meanwhile, the ground control cabinet is used for adjusting the working power (300-3000 kw) of the underground heat generating device, electric energy is transferred into underground and then converted into heat energy, and the generated heat energy heats the chemical agent solution injected into the oil pipe, so that the temperature of the chemical agent solution is increased to the maximum activity of the chemical agent. After the chemical agent is fully contacted with the stratum thick oil for viscosity reduction. Meanwhile, the underground temperature and the underground pressure are monitored in real time through underground parameter monitoring equipment integrated in the cable; when emergency events such as temperature rising and pressure rising occur, the emergency events can be pressed through the ground, and the hydraulic control pipeline controls the safety valve, the packer and the exhaust valve to be closed so as to block the oil pipe channel and the oil sleeve annular channel.
When the invention is applied to the reservoir heating technology, the ground control cabinet is used for adjusting the working power (300-3000 kw) of the underground heat generating device, electric energy is transmitted underground through the cable and converted into heat energy, the heat energy is transmitted to surrounding fluid in the modes of heat conduction, heat radiation and the like, heat is gradually transmitted to the deep part of the stratum in the modes of flow, transmission and the like, the stratum temperature is increased, the viscosity of thick oil is reduced, and the purpose of effectively exploiting the thick oil is realized. Meanwhile, the heating temperature of the heating system is observed in real time through an underground parameter monitoring technology, and when the temperature of formation fluid is increased to 80% of the coking temperature of crude oil, the output power of the ground control cabinet is regulated to keep the heating temperature of the formation constant. After the formation heating condition is met, the electric pump can be started to produce, so that synchronous operation of downhole thermal generation and electric pump lifting is realized. Meanwhile, underground temperature and pressure are monitored in real time through underground parameter monitoring equipment integrated in the cable, when emergency events such as temperature rising, pressure rising and the like occur, pressure can be pumped through the ground, and a hydraulic control pipeline controls a safety valve, a packer and an exhaust valve to be closed so as to block an oil pipe channel and an oil sleeve annular channel.
The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The terms "coupled" and "connected," as used herein, are intended to encompass both direct and indirect coupling (coupling), unless otherwise indicated. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
The foregoing has described exemplary embodiments of the invention, it being understood that any simple variations, modifications, or other equivalent arrangements which would not unduly obscure the invention may be made by those skilled in the art without departing from the spirit of the invention.
Claims (4)
1. An underground thermal power generation device for offshore thick oil thermal recovery is characterized in that: the device comprises a downhole heat generation process pipe column, a safety control system and a heating system;
the underground heat generation process pipe column comprises a first oil pipe, an electric pump cable, a Y joint, an oil pipe nipple, an electric pump unit, a second oil pipe, a cable penetrating through the Y joint, a pipe with a hole and a lead-in angle;
the upper part of the Y joint is connected with a first oil pipe, the upper part of the oil pipe nipple is connected with the Y joint, the lower part of the oil pipe nipple is connected with the electric pump unit, the upper part of the second oil pipe is connected with the Y joint, the lower part of the second oil pipe is connected with a cable penetrating through the Y joint, the upper part of the perforated pipe is connected with the cable penetrating through the Y joint, the lower part of the perforated pipe is connected with the oblique guiding pipe, and the lower part of the electric pump cable is connected with the electric pump unit;
the safety control system comprises a safety valve hydraulic control pipeline, a packer hydraulic control pipeline, a safety valve, an exhaust valve hydraulic control pipeline, an exhaust valve and a packer;
the safety valve and the packer are arranged on the first oil pipe, the safety valve is arranged above the packer, the lower part of the exhaust valve is connected with the packer, the hydraulic control pipeline of the safety valve is connected with the safety valve, the hydraulic control pipeline of the packer is connected with the packer, and the hydraulic control pipeline of the exhaust valve is connected with the exhaust valve;
in the heating system, a conductor is connected with insulating materials, three groups of insulating materials are in contact with each other and are connected with an outer armor, a capillary, an optical fiber outer armor and a thermocouple outer armor are arranged between the three groups of insulating materials and the outer armor, an optical fiber core is arranged in the optical fiber outer armor, and thermocouple wires are arranged in the thermocouple outer armor.
2. The use of a downhole thermal power generation device for thermal recovery of marine thick oil according to claim 1 in hot water injection thick oil recovery, wherein: the underground electric heating technology is used for heating cold water injected from the ground into hot water for hot water flooding exploitation, and the underground parameter monitoring and safety control system is used for ensuring the operation safety.
3. The use of a downhole thermal generator for offshore thickened oil thermal recovery as defined in claim 1 in chemical assisted viscosity reduction, wherein: the underground electric heating technology is used for heating the reservoir stratum, the requirement of chemical agents on temperature is met, the activity of the chemical agents is improved, the thickened oil exploitation is realized, the underground production condition is observed in real time through the underground parameter monitoring technology, and the operation safety of a shaft is ensured.
4. Use of a downhole thermal power generation device for thermal recovery of marine thick oil according to claim 1 for heating a reservoir, wherein: the underground electric heating generation power is controlled by adjusting the output power of the ground control cabinet, and the oil reservoir is directly heated, so that the temperature of the oil reservoir and the crude oil is increased, the viscosity is reduced, the oil reservoir and the crude oil are enabled to have fluidity, and meanwhile, an electric pump can be started to conduct lifting operation, so that the synchronous operation of bottom hole thermal generation and lifting is realized, the bottom hole temperature is observed in real time through a monitoring technology, the crude oil coking is avoided, and the safety of shaft operation is ensured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210346469.5A CN114776262B (en) | 2022-04-02 | 2022-04-02 | Underground thermal power generation device for offshore thickened oil thermal recovery and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210346469.5A CN114776262B (en) | 2022-04-02 | 2022-04-02 | Underground thermal power generation device for offshore thickened oil thermal recovery and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114776262A CN114776262A (en) | 2022-07-22 |
| CN114776262B true CN114776262B (en) | 2023-07-28 |
Family
ID=82428110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210346469.5A Active CN114776262B (en) | 2022-04-02 | 2022-04-02 | Underground thermal power generation device for offshore thickened oil thermal recovery and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114776262B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103806878B (en) * | 2012-11-05 | 2016-05-11 | 中国石油化工股份有限公司 | Not kill-job of sea electric pump lifting technology tubing string |
| 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 |
| CN106703763A (en) * | 2017-01-04 | 2017-05-24 | 中国海洋石油总公司 | Intelligent layered mining system applicable to offshore oilfield sand control well completion |
| CN112012706A (en) * | 2020-02-14 | 2020-12-01 | 中国海洋石油集团有限公司 | Offshore thickened oil steam huff-puff injection-production integrated device |
| CN113090237A (en) * | 2021-03-17 | 2021-07-09 | 中海油能源发展股份有限公司 | Full-wellbore heat-insulation electric submersible pump injection-production integrated tubular column applied to 370-degree thermal production well and operation method thereof |
-
2022
- 2022-04-02 CN CN202210346469.5A patent/CN114776262B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN114776262A (en) | 2022-07-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105840159B (en) | A kind of gas hydrate exploitation device and recovery method based on heliotechnics | |
| CN106968601B (en) | Exploit the casing programme and method of dry-hot-rock geothermal resource | |
| CN103291244A (en) | Method for compensating thermal energy of horizontal well mining heavy oil reservoirs in large power and subsection mode in pit | |
| CN103453571A (en) | Closed circulation heating system | |
| CN105909214A (en) | Method for exploiting compact dry heat rock geothermal energy by utilizing long horizontal well self-circulation structure | |
| CN108005618B (en) | Natural gas hydrate exploitation device and method based on solar energy-seawater source heat pump combined heat supply technology | |
| CN102979493A (en) | Gas injection system for combustion of oil in-situ under super-critical pressure and gas injection method thereof | |
| CN206650861U (en) | A kind of borehole fluid electric heater | |
| CN113685161B (en) | Nitrogen electric heating method and system for in-situ pyrolysis of oil-rich coal | |
| CN110145287B (en) | Thickened oil heating viscosity reduction composite oil production system | |
| CN103225497A (en) | Exploitation method of vaporizing formation water and displacing heavy oil by microwaves in situ | |
| CN114673479B (en) | Based on heterogeneous state CO 2 Horizon type geothermal strengthening mining method | |
| CN106499376A (en) | A kind of air injection auxiliary super-viscous oil underground cracking modifying process based on pit shaft heating mode | |
| CN102352744A (en) | Circulating hot water heavy oil thermal recovery system for ultra-deep well and process thereof | |
| CN110043235A (en) | A kind of thick oil filling vaporization method burnt using underground supercritical water | |
| CN106996283A (en) | The oil production method of spontaneous mixed phase hot fluid under a kind of hydrothermal cracking surge well | |
| CN104847322A (en) | Method for improving recovery efficiency for deep common thickened oil water drive-converting into-steam flooding | |
| CN203223214U (en) | Coiled tubing cable electric heating device for thick oil horizontal well | |
| CN111322045A (en) | Method for improving steam dryness at bottom of deep well heavy oil well by electric heating | |
| CN113074463B (en) | Heat extraction device and method suitable for hot dry rock stratum | |
| CN114776262B (en) | Underground thermal power generation device for offshore thickened oil thermal recovery and application thereof | |
| CN114719455B (en) | Based on different phase state CO 2 Directional stratum type geothermal reinforced mining method | |
| CN103114836B (en) | A kind of Apparatus for () and method therefor of steam heavy oil heat production | |
| CN214371027U (en) | Heat exchange sleeve device for efficiently exploiting geothermal resources and geothermal single well system | |
| US20230332805A1 (en) | Geothermal heat exchange apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |