CN114776262A - Underground heat generation device for offshore heavy oil thermal recovery and application thereof - Google Patents
Underground heat generation device for offshore heavy oil thermal recovery and application thereof Download PDFInfo
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- CN114776262A CN114776262A CN202210346469.5A CN202210346469A CN114776262A CN 114776262 A CN114776262 A CN 114776262A CN 202210346469 A CN202210346469 A CN 202210346469A CN 114776262 A CN114776262 A CN 114776262A
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- 238000011084 recovery Methods 0.000 title claims abstract description 33
- 239000000295 fuel oil Substances 0.000 title claims abstract description 20
- 230000020169 heat generation Effects 0.000 title claims abstract description 10
- 239000003921 oil Substances 0.000 claims abstract description 70
- 238000005516 engineering process Methods 0.000 claims abstract description 28
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 239000013043 chemical agent Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000012544 monitoring process Methods 0.000 claims abstract description 16
- 238000010248 power generation Methods 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 230000008569 process Effects 0.000 claims abstract description 13
- 238000002347 injection Methods 0.000 claims abstract description 9
- 239000007924 injection Substances 0.000 claims abstract description 9
- 230000009467 reduction Effects 0.000 claims abstract description 7
- 239000013307 optical fiber Substances 0.000 claims description 11
- 239000011810 insulating material Substances 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 239000010779 crude oil Substances 0.000 claims description 5
- 238000005485 electric heating Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000004020 conductor Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 238000004939 coking Methods 0.000 claims description 3
- 210000002445 nipple Anatomy 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000011161 development Methods 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 5
- 230000004075 alteration Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000012360 testing method 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
- E21B43/01—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
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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
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/04—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones using electrical heaters
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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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- 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
- E21B43/2401—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection by means of electricity
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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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- 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)
- Fluid-Pressure Circuits (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses an underground thermal power generation device for offshore heavy oil thermal recovery and application thereof, wherein the device comprises an underground thermal power generation process pipe column, a safety control system and a heating system; the invention realizes a pipe column structure which realizes the multifunctional combination of conventional electric pump lifting, underground safety control, horizontal section high-power heat generation, whole well section temperature monitoring, underground pressure monitoring and the like, can realize a reservoir heating technology, a hot water injection thick oil exploitation technology and a chemical agent auxiliary viscosity reduction technology, improves the heat utilization efficiency, reduces the operation cost, and reduces the requirements on well completion and oil pipe heat insulation performance; meanwhile, the invention meets the requirement of offshore safety, and a safety control system and a monitoring system are designed underground, so that the safety of thermal recovery operation can be ensured, and technical support is provided for optimizing a later process scheme; the underground heat generation process can be applied to a plurality of aspects such as a reservoir heating technology, a hot water injection thick oil exploitation technology, a chemical agent auxiliary viscosity reduction technology and the like, and has great significance for large-scale development of the Bohai thick oil.
Description
Technical Field
The invention belongs to the technical field of offshore heavy oil thermal recovery, and particularly relates to an underground thermal power generation device for offshore heavy 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 exploited, and the thick oil is limited by small offshore platform area, difficult transportation and the like, and the offshore thick oil thermal exploitation difficulty is very 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 then 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 pipe column replacement operation is required in the operation, and the well repair cost is high;
2. the utilization of heat efficiency is low, and a large amount of heat loss occurs in the process of transferring steam from a wellhead to a well bottom, so that the heat injection quality and the recovery effect of thick oil are influenced;
3. the steam throughput operation is high-temperature (370 ℃) and high-pressure (21MPa), and the operation safety risk is large.
Therefore, an underground thermal power generation device for offshore heavy oil thermal recovery is required to be found, the heavy oil recovery rate can be improved, the safety of a shaft is guaranteed, the operation cost is reduced, and a technical foundation is laid for large-scale thermal recovery development of a heavy oil field.
Disclosure of Invention
The invention relates to an underground heat generating device for offshore heavy oil thermal recovery and application thereof, which are innovatively designed according to the characteristics of offshore oil fields and well types. The invention realizes the aim of thermal recovery of the thick oil of the offshore oil field under the conditions of not changing the prior well completion structure and not increasing and occupying the prior space of the offshore oil field. The device and the method can be applied to various heavy oil thermal recovery technologies, and realize multi-mode recovery modes aiming at different well conditions and requirements. Meanwhile, the device and the method comprise underground safety control and test equipment, the safety of heavy oil thermal recovery production is guaranteed while heavy oil thermal recovery is realized, and the underground parameters of the whole well casing are obtained, so that technical support is provided for later process scheme optimization.
The technical scheme adopted by the invention is as follows:
an underground thermal power generation device for offshore heavy oil thermal recovery comprises an underground thermal power generation process pipe column, a safety control system and a heating system;
the underground heat generation process pipe column comprises a first oil pipe (3-1/2 "), an electric pump cable, a Y joint, an oil pipe short joint, an electric pump unit, a second oil pipe (2-7/8"), a cable penetrating Y joint, a perforated pipe (2-7/8 ") and a lead incline;
the upper part of the Y joint is connected with a first oil pipe (3-1/2 '), the upper part of the oil pipe short section is connected with the Y joint, the lower part of the oil pipe short section is connected with an 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 short section is connected with a cable penetrating Y joint, the upper part of the perforated pipe (2-7/8 ') is connected with the cable penetrating Y joint, the lower part of the perforated pipe is connected with the inclined guide, 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 safety valve hydraulic control pipeline is connected with the safety valve, the packer hydraulic control pipeline is connected with the packer, and the exhaust valve hydraulic control pipeline is connected with the exhaust valve.
In the heating system, a conductor is connected with an insulating material, the 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 placed in the middle of the connection of the three groups of insulating materials and the outer armor, an optical fiber core is placed in the optical fiber outer armor, and a thermocouple wire is placed in the thermocouple outer armor.
The underground heat generating device for offshore heavy oil thermal recovery is applied to hot water injection heavy oil recovery, cold water injected from the ground is heated into hot water through an underground electric heating technology to carry out hot water drive recovery, and operation safety is ensured through an underground parameter monitoring and safety control system.
The underground heat generating device for offshore heavy oil thermal recovery is applied to chemical agent-assisted viscosity reduction, a reservoir is heated by an underground electric heating technology, the requirement of the chemical agent on temperature is met to improve the activity of the chemical agent and realize heavy oil recovery, the production condition at the bottom of a well is observed in real time by an underground parameter monitoring technology, and the operation safety of a shaft is ensured.
The utility model provides an application of downhole heat power generation device in reservoir heating of offshore viscous crude thermal recovery, through adjusting ground switch board output power (300 ~ 3000kw) control downhole electrical heating power of taking place, directly heat the oil reservoir, in order to improve reservoir and crude oil temperature, reduce viscosity and make it possess mobility, can start the charge pump simultaneously and lift the operation, realize that the bottom of a well heat power takes place and lifts synchronous operation, and observe bottom of a well temperature in real time through monitoring technology, avoid crude oil coking and ensure pit shaft operation safety.
The invention has the advantages and positive effects that: compared with the prior art, the scheme has the advantages that the multifunctional combined pipe column structure for realizing conventional electric pump lifting, underground safety control, horizontal section high-power heat generation, whole well section temperature monitoring, underground pressure monitoring and the like is realized, the reservoir heating technology, the hot water injection thick oil exploitation technology and the chemical agent auxiliary viscosity reduction technology can be realized, the heat utilization efficiency is improved, the operation cost is reduced, and the requirements on well completion and oil pipe heat insulation performance are reduced; meanwhile, the invention meets the requirement of offshore safety, and a safety control system and a monitoring system are designed underground, so that the safety of thermal recovery operation can be ensured, and technical support is provided for optimizing a later process scheme; the underground heat generation process can be applied to a plurality of aspects such as a reservoir heating technology, a hot water injection thick oil exploitation technology, a chemical agent auxiliary viscosity reduction technology and the like. The implementation of the scheme has great significance for large-scale development of the thick oil in the Bohai sea.
Drawings
FIG. 1: the invention discloses a structural schematic diagram of an underground heat generating device for offshore heavy oil thermal recovery.
FIG. 2 is a drawing: the invention discloses a cross section schematic diagram of a novel heating system (with the power of 300-3000 kw).
Wherein: a-1: first oil pipe, A-2: electric pump cable, a-3: y-linker, A-4: oil pipe nipple, A-5: electric pump unit, a-6: second oil pipe, A-7: cable crossing Y-junction, a-8: perforated pipe, a-9: oblique guiding, B-1: relief valve pilot operated line, B-2: packer hydraulic control lines, B-3: safety valve, B-4: discharge valve hydraulic control pipeline, B-5: exhaust valve, B-6: a packer, C: heating system, C-1: outer armor of the 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: the core of the optical fiber.
For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the present invention is further described below with reference to specific examples.
Examples
As shown in attached figure 1, the underground thermal power generation device for offshore heavy oil thermal recovery comprises an underground thermal power 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 short joint A-4, an electric pump unit A-5, a second oil pipe A-6 (2-7/8"), a cable penetrating Y joint A-7, a perforated pipe A-8(2-7/8 ") and a lead-inclined pipe 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 short section A-4 is connected with the Y joint A-3, the lower part of the oil pipe short section A-5 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 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 a lead-in incline 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 both arranged on a 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 conductor is connected with a C-3 insulating material, the three groups of C-3 insulating materials are in contact with each other and are connected with a 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 in the middle of the connection of the three groups of C-4 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 method is applied to the hot water injection thick oil recovery technology, low-temperature water is injected into a stratum through an oil pipe, meanwhile, the working power (300-3000 kw) of the underground thermal power generation device is adjusted through the ground control cabinet, electric energy is transmitted to the underground and then converted into heat energy, the generated heat energy heats the normal-temperature water injected by the oil pipe and flows to the deep part of the stratum, the temperature of the stratum is increased, the viscosity of thick oil is reduced, and the purpose of thick oil recovery is achieved. Meanwhile, underground temperature and pressure are monitored in real time through underground parameter monitoring equipment integrated in the cable, and when emergency events such as temperature return and pressure rise occur, the emergency events can be pressurized through the ground, and the safety valve, the packer and the exhaust valve are controlled to be closed by the hydraulic control pipeline so as to plug an oil pipe channel and an oil sleeve annulus channel.
When the chemical agent auxiliary viscosity reduction technology is applied, chemical agent solution is injected into a stratum through an oil pipe, meanwhile, the working power (300-3000 kw) of the underground thermal power generation device is adjusted through the ground control cabinet, electric energy is transmitted to the 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 thick oil of the stratum to reduce the viscosity. Meanwhile, underground temperature and pressure are monitored in real time through underground parameter monitoring equipment integrated in the cable; when emergencies such as temperature return and pressure rise occur, the pressure can be pressed through the ground, and the safety valve, the packer and the exhaust valve are controlled to be closed by the hydraulic control pipeline so as to plug an oil pipe channel and an oil sleeve annular channel.
When the device is applied to a reservoir heating technology, the working power (300-3000 kw) of the underground thermal power generation device is adjusted through the ground control cabinet, electric energy is transmitted to the underground through a cable and is converted into heat energy, the heat energy is transmitted to surrounding fluid through heat conduction, heat radiation and the like, the heat energy is gradually transmitted to the deep part of a stratum through flowing, transmitting and the like, the temperature of the stratum is increased, the viscosity of thick oil is reduced, and the purpose of effectively exploiting the thick oil is achieved. Meanwhile, the heating temperature of the heating system is observed in real time through an underground parameter monitoring technology, and when the temperature of the formation fluid rises to 80% of the coking temperature of the crude oil, the output power of the ground control cabinet is adjusted to keep the heating temperature of the formation constant. After the stratum heating condition is met, the electric pump can be started for production, and synchronous operation of underground thermal power 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, and when emergency events such as temperature return and pressure rise occur, the emergency events can be pressed through the ground, and the safety valve, the packer and the exhaust valve are controlled to be closed through the hydraulic control pipeline so as to plug an oil pipe channel and an oil sleeve annular channel.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
The invention being thus described by way of example, it should be understood that any simple alterations, modifications or other equivalent alterations as would be within the skill of the art without the exercise of inventive faculty, are within the scope of the invention.
Claims (4)
1. The utility model provides a thermal power generation device in pit that offshore heavy oil thermal recovery, its characterized in that: the device comprises an underground heat generation process pipe column, a safety control system and a heating system;
the underground thermal power generation process pipe column comprises a first oil pipe, an electric pump cable, a Y joint, an oil pipe short joint, an electric pump unit, a second oil pipe, a cable penetrating Y joint, a perforated pipe and a lead inclination;
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 an 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 Y joint, the upper part of the perforated pipe is connected with the cable penetrating Y joint, the lower part of the perforated pipe is connected with an inclined guide, 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 the first oil pipe, the safety valve is positioned above the packer, the lower part of the exhaust valve is connected with the packer, the safety valve hydraulic control pipeline is connected with the safety valve, the packer hydraulic control pipeline is connected with the packer, and the exhaust valve hydraulic control pipeline is connected with the exhaust valve;
in the heating system, a conductor is connected with an insulating material, the three groups of insulating materials are mutually contacted and connected with an outer armor, a capillary tube, an optical fiber outer armor and a thermocouple outer armor are placed in the middle of the connection of the three groups of insulating materials and the outer armor, an optical fiber core is placed in the optical fiber outer armor, and a thermocouple wire is placed in the thermocouple outer armor.
2. The utility model provides an application of heat generation facility in pit of hot water injection thick oil exploitation of hot oil recovery of sea thick oil which characterized in that: the underground electric heating technology is used for heating cold water injected from the ground into hot water for hot water drive exploitation, and the underground parameter monitoring and safety control system is used for ensuring the operation safety.
3. The utility model provides an application of underground heating power generating device in supplementary viscosity reduction of chemical agent of marine viscous crude thermal recovery which characterized in that: the reservoir is heated by an underground electric heating technology, the requirement of chemical agents on temperature is met to improve the activity of the chemical agents and achieve thick oil exploitation, the production condition of the bottom of a well is observed in real time by an underground parameter monitoring technology, and the operation safety of a shaft is ensured.
4. The utility model provides an application of downhole heating power generating device in reservoir heating of offshore viscous crude thermal recovery which characterized in that: the underground electric heating generation power is controlled by adjusting the output power of the ground control cabinet, the reservoir of the oil reservoir is directly heated, so that the temperature of the reservoir and the crude oil is improved, the viscosity is reduced, the electric pump can be started to carry out lifting operation, 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 coking of the crude oil is avoided, and the operation safety of a shaft 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 |
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| Publication Number | Publication Date |
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| CN114776262A true CN114776262A (en) | 2022-07-22 |
| CN114776262B CN114776262B (en) | 2023-07-28 |
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| 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 |
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| CN103806878A (en) * | 2012-11-05 | 2014-05-21 | 中国石油化工股份有限公司 | Offshore no-killing electric pump lifting process pipe string |
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| 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 |
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2022
- 2022-04-02 CN CN202210346469.5A patent/CN114776262B/en active Active
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| CN103806878A (en) * | 2012-11-05 | 2014-05-21 | 中国石油化工股份有限公司 | Offshore no-killing electric pump lifting process pipe string |
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| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 邹剑;韩晓冬;王秋霞;张华;刘志龙;: "海上热采井耐高温井下安全控制技术研究", 特种油气藏, no. 04 * |
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| CN114776262B (en) | 2023-07-28 |
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