CN106499376A - A kind of air injection auxiliary super-viscous oil underground cracking modifying process based on pit shaft heating mode - Google Patents
A kind of air injection auxiliary super-viscous oil underground cracking modifying process based on pit shaft heating mode Download PDFInfo
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- CN106499376A CN106499376A CN201710001701.0A CN201710001701A CN106499376A CN 106499376 A CN106499376 A CN 106499376A CN 201710001701 A CN201710001701 A CN 201710001701A CN 106499376 A CN106499376 A CN 106499376A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 48
- 238000002347 injection Methods 0.000 title claims abstract description 39
- 239000007924 injection Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 34
- 230000008569 process Effects 0.000 title claims abstract description 24
- 238000005336 cracking Methods 0.000 title claims abstract description 18
- 239000003921 oil Substances 0.000 claims abstract description 42
- 239000010779 crude oil Substances 0.000 claims abstract description 24
- 230000004048 modification Effects 0.000 claims abstract description 9
- 238000012986 modification Methods 0.000 claims abstract description 9
- 239000004058 oil shale Substances 0.000 claims abstract description 5
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 5
- 239000003079 shale oil Substances 0.000 claims abstract description 5
- 230000000694 effects Effects 0.000 claims abstract description 4
- 238000005553 drilling Methods 0.000 claims abstract description 3
- 238000013461 design Methods 0.000 claims description 8
- 239000000295 fuel oil Substances 0.000 claims description 3
- 238000011084 recovery Methods 0.000 abstract description 8
- 238000005485 electric heating Methods 0.000 abstract description 5
- 238000011065 in-situ storage Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000012546 transfer Methods 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 238000000197 pyrolysis Methods 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 239000005431 greenhouse gas Substances 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- 238000010793 Steam injection (oil industry) Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009089 cytolysis Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- E21B43/166—Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
- E21B43/168—Injecting a gaseous medium
-
- 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
- E21B43/295—Gasification of minerals, e.g. for producing mixtures of combustible gases
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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)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention provides the process of a kind of comprehensive oil extraction and modification super-viscous oil in situ, oil shale, kerogen and middle low-maturity shale oil reservoir.The method is aided with air injection technique based on new wellbore electric heating lysisin situ modifying process.By drilling through exploitation well group to oil-bearing reservoir or being adjusted in existing well pattern, rationally deployment heated well, gas injection well and producing well；Air is injected into reservoir, by cable connection electrically heated rod heating oil-bearing reservoir is heated in heating well shaft, realizes the cracking modification of crude oil underground.The method combines the advantage of wellbore electric heating and air injection technique, can solve the problem that heat transfer type is single under single wellbore electric heating pattern, the problems such as driving energy is not enough, by crude oil and the heat effect of air oxidation reaction, formation temperature is improved, reduces crude oil pyrolysis temperature, accelerate lysisin situ reaction rate, oil recovery factor is improved, reduces water resources consumption and carbon emission.
Description
Technical field
The present invention relates to the high-efficiency mining of heavy crude reservoir, oil shale, kerogen reservoir and middle low-maturity shale oil oil reservoir,
More particularly to a kind of utilization air injection auxiliary wellbore electric heating realizes the process of viscous crude and the modification of kerogen lysisin situ.
Background technology
With the continuous decay of conventional gas and oil resource reserve, viscous crude resource has become a kind of important takes over the energy.Thick
The exploitation of oil reservoir it is critical only that at 2 points：The first effectively reduces the viscosity of viscous crude, improves its energy of flow under reservoir conditions
Power；Furthermore it is that reservoir possesses enough driving energies, by crude oil effective displacement to producing well, and then can extracts to ground.Base
In the thermal recovery technology of steam injection be most widely used heavy oil development mode at present, by with straight well or horizontal well technology, non-solidifying
Gassing (nitrogen, carbon dioxide, flue gas, air) and solvent injection technique combine, and show as different process forms, are answered
For different types of heavy crude reservoir.Mining site practice has been proven that based on the thermal recovery technology of steam injection be a kind of effective viscous crude
Mining type, but its too high energy consumption, substantial amounts of water resources consumption and greenhouse gas emission run counter to current energy-saving and emission-reduction and life
The strategic requirement of state environment sustainable development, needs to seek new technique raising development effectiveness, reduces exploitation energy consumption and carbon emission.
For low-grade crude oil reservoir, such as super-viscous oil reservoir, oil shale, kerogen reservoir and middle low-maturity shale oil
Reservoir, is a kind of novel mining type based on the lysisin situ modifying process of pit shaft heating mode.The method passes through in pit shaft
Middle installation heats cable, heats oil-bearing reservoir by electrically heated rod in oil layer section pit shaft as thermal source, lifts reservoir temperature to crude oil
Or kerogen cracking temperature (generally more than 300 DEG C), promote crude oil or kerogen that lysisin situ reaction occurs, form lightweight
Component (Petroleum, kerosene, diesel oil and cracking gas).The advantage of the method is to lift crude quality, recovery ratio in underground
High (up to 70%), electrical heating replace high-temperature steam heating, greatly reduce water resources consumption and greenhouse gas emission.However, by
In based on the exploitation of reservoir natural energy, however it remains the not enough problem of reservoir energy, i.e. crude oil after partly upgraded can not be had
To producing well, while wellbore electric heating pattern mainly carries out heat transfer with heat exchange pattern, heated perimeter is relatively for effect ground displacement
Little, heat time heating time is long, and still there is certain limitation.
Air relative to other gases (carbon dioxide, nitrogen, flue gas), with source of the gas is wide, the low advantage of cost, therefore
Air injection technology has been widely used in the exploitation of middle light oil reservoirs and heavy crude reservoir, including high pressure air injection (middle lightweight
Oil reservoir) and situ combustion technology (heavy crude reservoir) etc..(LTO) is reacted about low-temperature oxidation of the air with middle light crude oil and viscous crude
And high-temperature oxydation reaction (HTO) has carried out extensive research both at home and abroad, to the understanding that its response mechanism is more deep.This
Outward, the live auxiliary facility and related process about air injection technology is more ripe.In view of factors above, present invention proposition
A kind of economical and effective, practical, the super-viscous oil lysisin situ modifying process based on pit shaft heating mode can be improved, so as to enter
One step improves oil recovery factor, and exploitation reducig energy consumption improves Development Life Cycle economic benefit.
Content of the invention
The invention provides a kind of suitable for super-heavy oil deposit, oil shale, kerogen reservoir and low-maturity shale oil
The air injection based on pit shaft heating mode of reservoir is auxiliarily lower to crack modifying process, and which comprises the following steps：
Step 1：Exploitation well group is drilled through for target reservoir mined bed, the exploitation well group includes heated well, gas injection well
And producing well.Described exploitation well group can be straight well well group, horizontal well well group and directional well well group in any one or by
The combination well group that different well type are constituted.Well group type and well spacing density depend on reservoir geology condition.For putting into exploitation
Oil reservoir, can be adjusted on the basis of existing well group, rationally drill through Encryption Well.
Step 2：Heating cable is installed in heating well shaft, in oil layer section pit shaft, heats cable connection electrically heated rod.
Reservoir is electrically heated by heated well, makes formation temperature be promoted to 300～450 DEG C, promote crude oil or kerogen to occur former
Position cracking modification.
Step 3：By gas injection well to air injection in reservoir to designing gas injection rate.The design gas injection rate depends on exploitation storage
The feature (reservoir thickness, oil saturation etc.) of layer, crude oil property and gas injection occasion.
Step 4：After reaching the design heating stewing well time, open producing well and extract crude oil and cracking after modifying in stratum
Gas.The design heating is boiled in a covered pot over a slow fire the well time depending on exploitation reservoir volume and super-viscous oil or kerogenic cracking reaction speed and is opened
Adopt the factors such as reservoir volume.
Beneficial effects of the present invention are：1. for thermal recovery technology recovery ratio based on steam injection is low, high energy consumption, water consumption
The deficiency such as greatly, greenhouse gas emissions are big, the air injection assisted in situ cracking modifying process based on pit shaft heating mode has to be adopted
High income (up to more than 70%), capacity usage ratio is high, in the way of electrical heating directly heats reservoir replaces combustion of fossil fuels
Heating vapor etc. takes the mode of thermal medium indirectly heat reservoir, substantially reduces water resources consumption and greenhouse gas emission, while
Realize that crude oil underground modifies, lift crude oil grade；2. the air injection assisted in situ based on pit shaft heating mode cracks modifying process
The single problem of reservoir thermaltransmission mode under single pit shaft heating mode is overcome, conduction of heat and thermal convection current are upgraded to by conduction of heat
Common heat transfer, improves the reservoir rate of heat addition, shortens the crude oil modification time；3. the air injection assisted in situ based on pit shaft heating mode
Cracking modifying process overcomes the not enough problem of the reservoir energy run in single pit shaft heating mode recovery process, injects air
Can effectively supplement and improve stratum energy, in production process, reservoir deep gas displacement modification crude oil enters producing well；4. base
In the low-temperature oxidation (heat release) that the air injection assisted in situ cracking modifying process of pit shaft heating mode can utilize crude oil and air
Effect, improves and maintains formation temperature, reduce crude oil pyrolysis reaction temperature, improves lysis efficiency and cracking degree.
Description of the drawings
Accompanying drawing 1 is the air injection auxiliary super-viscous oil underground cracking modifying process schematic diagram based on pit shaft heating mode.
Wherein, 1, oil-bearing reservoir, 2, cap rock, 3, heated well, 4, producing well, 5, heating cable, 6, electrically heated rod, 7, transformation
Device, 8, electrical network, 9, air compressor, 10, air pressure buffer unit, 11, oil pumper.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in detail.
A kind of air injection auxiliary super-viscous oil underground cracking modifying process based on pit shaft heating mode, comprises the following steps that：
(1) for target reservoir mined bed 1, horizontal well well group (3 and 4), horizontal section length are drilled through using conventional drilling tool
And two mouthfuls of well horizontal segments between the upper and lower every according to reservoir property (reservoir thickness, porosity and permeability etc.), crude oil property (viscosity and
Density etc.) and technical feasibility determination；
(2) heating cable 5 is installed in 3 pit shaft of heated well, in horizontal segment pit shaft, heats cable connection electrically heated rod 6.
Described heating cable 5 combines coiled tubing technique lower going-into-well cylinder, and heating cable 5 can be pre-assembled to coiled tubing outside well site
Interior, then transport well head and installed.Heating cable 5 can connect electrical network 8 via transformator 7；
(3) ground air is compressed by air compressor 9, through air-pressure stable device 10,4 annular space of producing well is to containing
Oily reservoir 1 injects the air of design flow；
(4) 6 temperature of electrically heated rod is set as 400 to 1 heat temperature raising of oil-bearing reservoir by electrically heated rod 6 in horizontal wellbore
～600 DEG C, make formation temperature be promoted to 300～450 DEG C, heat time heating time be some months to several years；
(5) after reaching the setting heating stewing well time, producing well 4 is opened, modification crude oil in stratum is extracted by ground oil pumper 11,
Association cracked gas are expelled to gas line by annular space.
Claims (9)
1. a kind of air injection auxiliary super-viscous oil underground cracking modifying process based on pit shaft heating mode, it is characterised in that include as
Lower step：
(1) target reservoir mined bed being directed to, exploitation well group is drilled through using conventional drilling tool, the exploitation well group includes heating/
Gas injection well and producing well；
(2) oil-bearing reservoir is heated to by design temperature by heating cable in pit shaft, promotes the cracking modification of crude oil underground；
(3) by heating/gas injection well to air injection in reservoir to designing gas injection rate；
(4), after reaching the heating stewing well time, open producing well and produced.
2. the air injection auxiliary super-viscous oil underground based on pit shaft heating mode as claimed in claim 1 cracks modifying process, its
It is characterised by that oil reservoir described in step (1) is super-heavy oil deposit, oil shale, kerogen reservoir and middle low-maturity shale oil oil reservoir
In one kind.
3. the air injection auxiliary super-viscous oil underground based on pit shaft heating mode as claimed in claim 1 cracks modifying process, its
Be characterised by described in step (1) exploitation well group be any one in straight well well group, horizontal well well group and directional well well group or by
The combination well group that different well type are constituted, the exploitation well group depend on geology reservoir.
4. the air injection auxiliary super-viscous oil underground based on pit shaft heating mode as claimed in claim 1 cracks modifying process, its
If being characterised by, described in step (1), oil reservoir mined bed has put into exploitation, can be adjusted on the basis of well group has been exploited,
Encryption Well is rationally drilled through.
5. the air injection auxiliary super-viscous oil underground based on pit shaft heating mode as claimed in claim 1 cracks modifying process, its
It is characterised by that heated well and producing well described in step (1) can be used as the gas injection wells, can be by the heated well and life
Producing well oil jacket annular space, air is injected into reservoir.
6. the air injection auxiliary super-viscous oil underground based on pit shaft heating mode as claimed in claim 1 cracks modifying process, its
It is characterised by described in step (2) that heating cable can be allocated in coiled tubing in well site exterior in advance, then by the continuous oil
Pipe is transported to well site, is attached in the heating well shaft.
7. the air injection auxiliary super-viscous oil underground based on pit shaft heating mode as claimed in claim 1 cracks modifying process, its
It is characterised by that design temperature scope described in step (2) is 300～450 DEG C, the height of the design temperature depends on reservoir original
Oily or kerogenic cracking temperature and the heat effect of air and crude oil/kerogen oxidation reaction.
8. the air injection auxiliary super-viscous oil underground based on pit shaft heating mode as claimed in claim 1 cracks modifying process, its
Be characterised by described in step (3) design air injection amount depend on exploitation reservoir feature (reservoir thickness, oil saturation etc.),
Crude oil property and gas injection occasion etc..
9. the air injection auxiliary super-viscous oil underground based on pit shaft heating mode as claimed in claim 1 cracks modifying process, its
Be characterised by heating described in step (4) the stewing well time may be some months to several years, depend on the heat time heating time crude oil or
The factor such as person's kerogen cracking speed and exploitation reservoir volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710001701.0A CN106499376A (en) | 2017-01-03 | 2017-01-03 | A kind of air injection auxiliary super-viscous oil underground cracking modifying process based on pit shaft heating mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710001701.0A CN106499376A (en) | 2017-01-03 | 2017-01-03 | A kind of air injection auxiliary super-viscous oil underground cracking modifying process based on pit shaft heating mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106499376A true CN106499376A (en) | 2017-03-15 |
Family
ID=58344993
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710001701.0A Pending CN106499376A (en) | 2017-01-03 | 2017-01-03 | A kind of air injection auxiliary super-viscous oil underground cracking modifying process based on pit shaft heating mode |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035354A (en) * | 2017-06-10 | 2017-08-11 | 大庆东油睿佳石油科技有限公司 | A kind of oil production method for encrypting spontaneous mixed phase hot fluid under horizontal well surge well |
| CN108252692A (en) * | 2018-04-10 | 2018-07-06 | 中国石油大学(北京) | A kind of method that shale oil recovery is improved using air oxidation thermal fracture |
| CN109113699A (en) * | 2018-07-12 | 2019-01-01 | 中国石油天然气股份有限公司 | Shale oil in-situ lightweight development method, device and system |
| CN109403935A (en) * | 2018-09-30 | 2019-03-01 | 中海石油(中国)有限公司 | A kind of oil-sand SAGD Encryption Well oil increment calculation method |
| US11168552B2 (en) | 2019-10-28 | 2021-11-09 | King Fahd University Of Petroleum And Minerals | Method for natural gas recovery from subterranean hydrocarbon reservoirs |
| CN113738336A (en) * | 2021-07-30 | 2021-12-03 | 西安交通大学 | Oil-rich coal underground pyrolysis heat energy cyclic utilization system |
| CN114482955A (en) * | 2022-02-17 | 2022-05-13 | 西南石油大学 | Method for improving deep thickened oil exploitation efficiency by underground crude oil cracking modification |
| CN118462125A (en) * | 2024-07-12 | 2024-08-09 | 中国科学院地质与地球物理研究所 | Middle-low-maturing shale oil system utilizing electric discarding heating exploitation |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035354A (en) * | 2017-06-10 | 2017-08-11 | 大庆东油睿佳石油科技有限公司 | A kind of oil production method for encrypting spontaneous mixed phase hot fluid under horizontal well surge well |
| CN108252692A (en) * | 2018-04-10 | 2018-07-06 | 中国石油大学(北京) | A kind of method that shale oil recovery is improved using air oxidation thermal fracture |
| CN109113699A (en) * | 2018-07-12 | 2019-01-01 | 中国石油天然气股份有限公司 | Shale oil in-situ lightweight development method, device and system |
| CN109113699B (en) * | 2018-07-12 | 2021-03-30 | 中国石油天然气股份有限公司 | Shale oil in-situ lightening development method, device and system |
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| CN109403935A (en) * | 2018-09-30 | 2019-03-01 | 中海石油(中国)有限公司 | A kind of oil-sand SAGD Encryption Well oil increment calculation method |
| CN109403935B (en) * | 2018-09-30 | 2020-10-09 | 中海石油(中国)有限公司 | Oil yield calculation method for oil sand SAGD encrypted well |
| US11613977B2 (en) | 2019-10-28 | 2023-03-28 | King Fahd University Of Petroleum And Minerals | Method for recovering hydrocarbons from a wellbore using a conducting element with winding transformer |
| US11506035B2 (en) | 2019-10-28 | 2022-11-22 | King Fahd University Of Petroleum And Minerals | Method for detecting liquid condensation and recovering hydrocarbons |
| US11525346B2 (en) | 2019-10-28 | 2022-12-13 | King Fahd University Of Petroleum And Minerals | Hydrocarbon recovery with magnetically coupled conducting surface |
| US11168552B2 (en) | 2019-10-28 | 2021-11-09 | King Fahd University Of Petroleum And Minerals | Method for natural gas recovery from subterranean hydrocarbon reservoirs |
| US11613976B2 (en) | 2019-10-28 | 2023-03-28 | King Fahd University Of Petroleum And Minerals | Natural gas extraction using renewable energy |
| US11692419B2 (en) | 2019-10-28 | 2023-07-04 | King Fahd University Of Petroleum And Minerals | Subterranian hydrocarbon reservoir treatment method using wellbore heating |
| CN113738336A (en) * | 2021-07-30 | 2021-12-03 | 西安交通大学 | Oil-rich coal underground pyrolysis heat energy cyclic utilization system |
| CN114482955A (en) * | 2022-02-17 | 2022-05-13 | 西南石油大学 | Method for improving deep thickened oil exploitation efficiency by underground crude oil cracking modification |
| CN114482955B (en) * | 2022-02-17 | 2023-04-25 | 西南石油大学 | Method for improving deep thickened oil extraction efficiency by utilizing downhole crude oil cracking modification |
| CN118462125A (en) * | 2024-07-12 | 2024-08-09 | 中国科学院地质与地球物理研究所 | Middle-low-maturing shale oil system utilizing electric discarding heating exploitation |
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Application publication date: 20170315 |