CN105863581A - Oil extraction method for water controlling and oil increasing of buried hill oil reservoir high-water-cut oil-producing well - Google Patents
Oil extraction method for water controlling and oil increasing of buried hill oil reservoir high-water-cut oil-producing well Download PDFInfo
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- CN105863581A CN105863581A CN201610308363.0A CN201610308363A CN105863581A CN 105863581 A CN105863581 A CN 105863581A CN 201610308363 A CN201610308363 A CN 201610308363A CN 105863581 A CN105863581 A CN 105863581A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 238000000605 extraction Methods 0.000 title abstract description 5
- 230000001965 increasing effect Effects 0.000 title abstract 3
- 238000002347 injection Methods 0.000 claims abstract description 78
- 239000007924 injection Substances 0.000 claims abstract description 78
- 238000004519 manufacturing process Methods 0.000 claims abstract description 46
- 239000007789 gas Substances 0.000 claims description 109
- 239000003129 oil well Substances 0.000 claims description 14
- 238000011084 recovery Methods 0.000 claims description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 8
- 238000010793 Steam injection (oil industry) Methods 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 239000001569 carbon dioxide Substances 0.000 claims description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 4
- 239000004215 Carbon black (E152) Substances 0.000 claims description 3
- 229930195733 hydrocarbon Natural products 0.000 claims description 3
- 150000002430 hydrocarbons Chemical class 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract description 130
- 239000010779 crude oil Substances 0.000 abstract description 23
- 238000006073 displacement reaction Methods 0.000 abstract description 16
- 238000000034 method Methods 0.000 abstract description 5
- 239000011159 matrix material Substances 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 description 17
- 230000000694 effects Effects 0.000 description 10
- 230000009977 dual effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- 230000005465 channeling Effects 0.000 description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 235000020681 well water Nutrition 0.000 description 2
- 239000008346 aqueous phase Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
- 239000002349 well water Substances 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
- E21B43/166—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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/164—Injecting CO2 or carbonated water
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/70—Combining sequestration of CO2 and exploitation of hydrocarbons by injecting CO2 or carbonated water in oil wells
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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)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Edible Oils And Fats (AREA)
Abstract
The invention provides an oil extraction method for water controlling and oil increasing of a buried hill oil reservoir high-water-cut oil-producing well. The method comprises the following steps that 10, the high-water-cut oil-producing well is adopted as a target gas-injection well; 20, gas is injected into the target gas-injection well till the injected gas completes stratum bottom water displacement, and gas injection is stopped; 30, then, the target gas-injection well is adopted as a production well, and oil extraction production is performed. Gas is injected into the high-water-cut oil-producing well, the gas can achieve effective stratum bottom water displacement, bottom water is restrained from coning upwards, meanwhile, the injected gas can also enter an oil reservoir matrix, crude oil in the matrix and crude oil in tiny cracks are effectively displaced, water seal of the crude oil is relieved, the reservoir stratum working degree is improved, and therefore the water controlling and oil increasing effects are achieved.
Description
Technical field
The present invention relates to a kind of oil production method, adopting of a kind of water-control oil-increasing for buried hill oil pool high-water-cut oil-producing well
Oil method.
Background technology
Buried hill oil pool mostly is dual media structure, refers to that there is again the reservoir of hole in the existing crack of rock.The spy of dual media
Different property is, after the crude oil in crack is plucked out of, substrate to be relied on provides crude oil to crack, then is flowed to shaft bottom by crack.
Owing to fracture permeabgility is much larger than matrix permeability, therefore after major fracture links up bottom water, water breakthrough phenomenon is serious, stratum
Bottom water the most upwards coning, water ratio in oil well rises rapidly, quickly is flooded, and the crude oil in substrate and microcrack is by water
Envelope, it is impossible to accessing and effectively employ, oil well can not normally produce, and utilization rate is low.
Summary of the invention
It is an object of the invention to provide the oil production method of a kind of water-control oil-increasing for buried hill oil pool high-water-cut oil-producing well, to solve
Certainly bottom water coning causes the problem that waterflood can not normally produce.
For reaching above-mentioned purpose, the present invention proposes the oil recovery side of a kind of water-control oil-increasing for buried hill oil pool high-water-cut oil-producing well
Method, comprises the following steps: step S10: using high-water-cut oil-producing well as target gas injection well；Step S20: to described mesh
Mark gas well injects gas, until the gas injected completes stratum bottom water drive and replaces, stops gas injection；Step S30: will
Described target gas injection well is as producing well, and carrying out recovering the oil produces.
The oil production method of the water-control oil-increasing for buried hill oil pool high-water-cut oil-producing well as above, wherein, in described step
After S20 with described step S30 before, further comprising the steps of: step S21: to stop gas injection described target
Gas injection well carries out stewing well.
The oil production method of the water-control oil-increasing for buried hill oil pool high-water-cut oil-producing well as above, wherein, in described step
After S30, further comprising the steps of: step S40: in oil recovery production process, monitor the moisture content of described producing well,
If the aqueous rising of described producing well becomes high-water-cut oil-producing well again, return step S10.
The oil production method of the water-control oil-increasing for buried hill oil pool high-water-cut oil-producing well as above, wherein, described target is noted
Gas well is horizontal well.
The oil production method of the water-control oil-increasing for buried hill oil pool high-water-cut oil-producing well as above, wherein, described target is noted
Gas well is the oil well in the flooding pattern of buried hill oil pool Central Plains.
The oil production method of the water-control oil-increasing for buried hill oil pool high-water-cut oil-producing well as above, wherein, described gas is
Nitrogen, the hydrocarbon gas or carbon dioxide.
The oil production method of the water-control oil-increasing for buried hill oil pool high-water-cut oil-producing well as above, wherein, described High water cut
The moisture content of oil well is more than 90%.
The oil production method of the water-control oil-increasing for buried hill oil pool high-water-cut oil-producing well as above, wherein, described High water cut
The moisture content of oil well is more than 90%, and in described step S20, the gas injection rate injecting described target gas injection well is 90
Incomparably-110 ten thousand sides, day steam injection amount be 40,000 side-5 ten thousand sides, in described step S21, the stewing well time is 30 days-40
My god.
The oil production method of the water-control oil-increasing for buried hill oil pool high-water-cut oil-producing well as above, wherein, described High water cut
The moisture content of oil well is 100%, and in described step S20, the gas injection rate injecting described target gas injection well is 1,200,000
Side-140 ten thousand sides, day steam injection amount be 40,000 side-5 ten thousand sides, in described step S21, the stewing well time is 30 days-40
My god.
The oil production method of the water-control oil-increasing for buried hill oil pool high-water-cut oil-producing well as above, wherein, contains becoming height
Development phase before water oil well, described high-water-cut oil-producing well is developed by the development scheme of natural reservoir energy.
Feature and the advantage of the oil production method of the water-control oil-increasing for buried hill oil pool high-water-cut oil-producing well of the present invention be:
1, the oil production method of the water-control oil-increasing for buried hill oil pool high-water-cut oil-producing well of the present invention, by highly aqueous
Injecting gas in well, make gas effective displacement stratum bottom water, suppress bottom water upwards coning, concurrently injected gas can also
Enter in the substrate of oil reservoir, the crude oil in effective displacement substrate and the crude oil in minute crack, release the water water to crude oil
Envelope, improves the development degree of reservoir, thus reaches the effect of water-control oil-increasing；
2, the oil production method of the water-control oil-increasing for buried hill oil pool high-water-cut oil-producing well of the present invention, by by highly aqueous
Well is simultaneously as gas injection well and producing well, in other words using gas injection well and producing well as same well, it is simple to gas injection and adopting
Oil produces；
3, the oil production method of the water-control oil-increasing for buried hill oil pool high-water-cut oil-producing well of the present invention, uses horizontal well to carry out
Gas injection, Horizontal Well segment length, big with reservoir contact area, gas injection well segment length, longitudinal setting-out cone is effective, is more conducive to
Water-control oil-increasing.
Accompanying drawing explanation
The following drawings is only intended to, in schematically illustrating the present invention and explaining, not delimit the scope of the invention.Wherein:
Fig. 1 is the schematic diagram of buried hill oil pool high-water-cut oil-producing well；
Fig. 2 is the schematic diagram using the present invention that buried hill oil pool high-water-cut oil-producing well carries out water-control oil-increasing；
Fig. 3 is that gas enters crack setting-out cone, gas enters the schematic diagram of displacement crude oil in substrate；
Fig. 4 is to use the present invention to carry out the production curve chart that gas injection setting-out cone recovers the oil；
Fig. 5 is the gas injection rate change curve using the present invention to carry out gas injection.
Main element label declaration:
1 buried hill oil pool
11 crack 12 substrate
2 target gas injection well 21 gas injection well sections
3 bottom water
4 gases
5 crude oil
WAG water-air two-phase flow
Detailed description of the invention
In order to be more clearly understood from the technical characteristic of the present invention, purpose and effect, now comparison accompanying drawing illustrates this
Bright detailed description of the invention.
As it is shown in figure 1, buried hill oil pool 1 mostly is dual media structure, crack 11 permeability is big, uses natural energy
After buried hill dual media reservoir is developed by development scheme, in well pattern some oil wells because of bottom water 3 quick along crack 11
Coning, moisture content raises rapidly, becomes high-water-cut oil-producing well, oil production rapid decrease, or is difficult to carry out recovering the oil produce again.
As shown in Figure 2 and Figure 3, for this, the present invention provides a kind of control water for buried hill oil pool high-water-cut oil-producing well to increase
The oil production method of oil, or a kind of for buried hill oil pool high-water-cut oil-producing well with the oil recovery side of the water-control oil-increasing of watered-out well
Method, adopting high-water-cut oil-producing well (moisture content is for more than 90%) or watered-out well (moisture content is for 100%) again
Oil produces, and this oil production method comprises the following steps:
Step S10: using high-water-cut oil-producing well (moisture content is more than 90%) as target gas injection well 2；
Step S20: injecting gas 4 in target gas injection well 2, gas flow refers to arrow downwardly directed in Fig. 1
Head, until the gas 4 injected completes stratum bottom water 3 displacement, stops gas injection；In actual production, it is judged that the gas of injection
Body 4 completes the standard of stratum bottom water 3 displacement, and gas injection pressure promotes, and well head pressure becomes big, now represents injection
Gas is difficult to enter back into stratum and removes displacement bottom water, namely for this well, has reached temporary transient displacement near wellbore bottom water
Purpose, and possessed the condition again carrying out recovering the oil.
Step S30: then using target gas injection well 2 as producing well, carrying out recovering the oil produces, and crude oil flows to refer to figure
Arrow upwards is pointed in 1.
The present invention, by injecting gas in high-water-cut oil-producing well, makes gas effective displacement stratum bottom water, and suppression bottom water is upwards
Coning, concurrently injected gas can also enter in the substrate 12 of oil reservoir (small arrow referring in Fig. 2), effectively drive
For the crude oil 5 in substrate 12 and the crude oil in minute crack, release the water water seal to crude oil, improve employing of reservoir
Degree, thus reach the effect of water-control oil-increasing；It addition, by by high-water-cut oil-producing well simultaneously as gas injection well and producing well,
In other words using gas injection well and producing well as same well, it is simple to gas injection and recovering the oil produces.
Wherein, gas whether effective displacement bottom water can be judged, if note does not occurs by observing the change of gas injection well mouth pressure
Phenomenon that gas air pressure raises and well head builds the pressure, illustrates that injection gas has been enter into stratum and played displacement effect；If gas injection pressure
Promoting, well head pressure becomes big, and representative injection gas is difficult to enter back into stratum and removes displacement bottom water, has the most completed stratum bottom water
3 displacements.
In a preferred embodiment, after step S20 with step S30 before, also include step S21: right
The target gas injection well 2 completing gas injection carries out stewing well, so that gas 4 further setting-out cone.Wherein, the time one of stewing well
As according to gas injection rate depending on, within the scope of gas injection rate, gas injection rate is the most, and the stewing well time can extend accordingly.Stewing well
Effect is to inject gas drive for after bottom water, originally can be back flowed back into in crack by water seal crude oil in substrate, stewing
The time of well is exactly that the crude oil (for thin oil, non-viscous crude) in substrate is seeped in crack, and crude oil flows into from crack then
The time needed in pit shaft, so terminate when stewing well, after the oil recovery that drives a well, just can be with water seal in the original substrate of extraction
Crude oil, and then improve recovery ratio, improve the utilization rate of oil wells.
In another preferred embodiment, after step S30, also include step S40: in oil recovery production process
In, the moisture content of monitoring producing well, if the aqueous rising of producing well becomes high-water-cut oil-producing well again, return and perform step
S10。
In oil recovery production process, moisture content the most also can raise, under the oil recovery that is because driving a well can make strata pressure constantly
Fall, bottom water still can invade all along pressure drop direction, therefore needs to be circulated gas injection-stewing well-oil recovery and (belongs to interruption
Formula gas injection).
Further, the gas 4 of injection is nitrogen, the hydrocarbon gas or carbon dioxide.Wherein carbon dioxide can be with former
Oil mixed phase, Flooding Efficiency is good.
Preferably, the gas 4 of injection is nitrogen, not only saves Financial cost, and source of the gas good stability.
Further, target gas injection well 2 is horizontal well, Horizontal Well segment length, big with reservoir contact area, gas injection well section
21 is the longest, and longitudinally pressure cone is effective, and gas injection and exploitation effect are more preferable, more conducively water-control oil-increasing.
Further, target gas injection well 2 is the oil well in the flooding pattern of buried hill oil pool Central Plains, utilizes it is thus possible to improve oil well
Rate, is effectively saved the cost of investment playing the volume increase of new well, does not change former flooding pattern, can better profit from existingly
Go up and subterranean resource, improve the recovery utilization rate of resource.
In a specific embodiment, the moisture content of high-water-cut oil-producing well is more than 90% (e.g., less than 100%),
In step S20, every round (gas injection rate in i.e. one gas injection-stewing well-oil recovery process) injects target gas injection well 2
Gas injection rate is 900,000 side-110 ten thousand sides, day steam injection amount be 40,000 side-5 ten thousand sides, such as 4.5 ten thousand sides；In step S21
In, the stewing well time is 30 days-40 days.
In another specific embodiment, the moisture content of high-water-cut oil-producing well reaches 100%, in step S20, often takes turns
The gas injection rate of secondary injection target gas injection well 2 is 1,200,000 side-140 ten thousand sides, day steam injection amount be 40,000 sides-5 ten thousand, such as
4.5 ten thousand sides；In the step s 21, the stewing well time is 30 days-40 days.
Wherein, depending on the general moisture content according to high-water-cut oil-producing well of gas injection rate and cumulative oil production, sight to be calculated
Survey the information such as manufacturing parameter of Lin Jing, with guarantee to inject gas will not has channeling, it is to avoid affect Lin Jing production.Specifically,
Lin Jing refers to and this high-water-cut oil-producing well well in the range of the well spacing, Lin Jing typically this high-water-cut oil-producing well sidepiece or
Person top because high-water-cut oil-producing well has flooded, with bottom water closest to, Lin Jing here mostly typically is normal
The oil well produced, moisture content is relatively low, if the production gas-oil ratio of these Lin Jing raises suddenly, then illustrates highly aqueous
Well creates impact to these wells, injects gas and there occurs has channeling.
It addition, becoming the development phase before high-water-cut oil-producing well, high-water-cut oil-producing well is opening by natural reservoir energy
Originating party formula is developed, and the most first uses natural energy development scheme to develop buried hill dual media reservoir,
After well water height or sudden water flooding, use the water-control oil-increasing for buried hill oil pool high-water-cut oil-producing well of the present invention
Oil production method continual exploitation.
Below with reference to a concrete application case, implementation and the effect of the present invention it is described:
Xinglongtai buried hill horizontal well sudden water flooding, yield rapid decrement after water breakthrough, use the oil production method of the present invention,
Using this aqueous level well as gas injection well, as shown in Figure 4, Figure 5, nitrogen injection 33 days, per day gas injection 40,000 side/
My god, tired gas injection 1,320,000 side, gas injection is stewing well 40 days after completing, and as producing well after driving a well, carry out life of recovering the oil
Produce, the oil recovery production phase (October 11 i.e. 2015 11 to 2015 years February) in the diagram, be positioned at lower section
Two curves be respectively day oil-producing curve with daily output water curve, day at initial stage the highest 5.2 ton day of oil-producing, average day oil-producing
3.5 ton day, owing to day oil-producing is worked as with daily output aqueous phase, two curves have overlapped, and the curve being positioned at the top is daily output
Water curve, aqueous is dropped to about 40% by 100%, achieves preferable water-control oil-increasing effect.In Figure 5, left
Side vertical coordinate represents day steam injection, and right side vertical coordinate represents tired gas injection.
Compared with prior art, the invention have the advantages that
1, the present invention uses gas injection to carry out water-control oil-increasing, is different from artificial recharge, and the gas medium of injection can not only enter
Enter in large fracture, it is also possible to enter in less venturi or gap, so the gas medium injected can not only
Crude oil in enough effective displacement substrate and minute crack, it is also possible to suppression bottom water the most upwards coning, thus reach to control water
Increase the purpose of oil, the oil well water that the quick coning of bottom water overcoming the exploitation of existing buried hill oil pool natural energy to cause causes
Flood, stop the production difficulties such as closing well；
2, the present invention is in implementation process, utilizes watered-out well gas injection, forms air water slug continuous, small, promotes to split
Imbibition effect between seam and substrate, promotes that gas is handed over and infilters into substrate, slow down the water breakthrough of bottom water crack and substrate crude oil water seal,
It is beneficial to the extraction of substrate Crude Oil, improves old well, stop the utilization rate of closing well, improve economic benefit；
3, the present invention is according to the dual media characteristic of buried hill oil pool, only need to inject simple gas medium suppression bottom water and invade
Enter and the crude oil in displacement substrate, and without injecting the such as material such as plugging agent, gel, the most cost-effective, can have again
Effect realizes water-control oil-increasing；
4, the present invention focuses on taping the latent power again to individual well, is designed from individual well, with existing in great development pattern well pattern
Under the conditions of the gas injection well of combination type scale gas drive compare, more cost-effective, water-control oil-increasing fast onset.
The foregoing is only the schematic detailed description of the invention of the present invention, be not limited to the scope of the present invention.Any
Those skilled in the art, the equivalent variations made on the premise of without departing from the design of the present invention and principle and amendment,
The scope of protection of the invention all should be belonged to.And it should be noted that on each ingredient of the present invention is not limited in
Stating overall applicability, each technical characteristic described in the description of the present invention can select one according to actual needs and individually adopt
With or select the multinomial use that combines, therefore, the present invention covers its relevant with this case inventive point in the nature of things
It combines and specifically applies.
Claims (10)
1. the oil production method for the water-control oil-increasing of buried hill oil pool high-water-cut oil-producing well, it is characterised in that described use
Oil production method in the water-control oil-increasing of buried hill oil pool high-water-cut oil-producing well comprises the following steps:
Step S10: using high-water-cut oil-producing well as target gas injection well；
Step S20: inject gas in described target gas injection well, until the gas injected completes stratum bottom water drive and replaces,
Stop gas injection；
Step S30: using described target gas injection well as producing well, carrying out recovering the oil produces.
2. the oil production method of the water-control oil-increasing for buried hill oil pool high-water-cut oil-producing well as claimed in claim 1, it is special
Levy and be, after described step S20 with described step S30 before, further comprising the steps of:
Step S21: the described target gas injection well stopping gas injection being carried out stewing well.
3. the oil production method of the water-control oil-increasing for buried hill oil pool high-water-cut oil-producing well as claimed in claim 1 or 2,
It is characterized in that, after described step S30, further comprising the steps of:
Step S40: in oil recovery production process, monitors the moisture content of described producing well, if the aqueous rising of described producing well
Again become high-water-cut oil-producing well, return step S10.
4. the oil production method of the water-control oil-increasing for buried hill oil pool high-water-cut oil-producing well as claimed in claim 1 or 2,
It is characterized in that, described target gas injection well is horizontal well.
5. the oil production method of the water-control oil-increasing for buried hill oil pool high-water-cut oil-producing well as claimed in claim 1 or 2,
It is characterized in that, described target gas injection well is the oil well in the flooding pattern of buried hill oil pool Central Plains.
6. the oil production method of the water-control oil-increasing for buried hill oil pool high-water-cut oil-producing well as claimed in claim 1 or 2,
It is characterized in that, described gas is nitrogen, the hydrocarbon gas or carbon dioxide.
7. the oil production method of the water-control oil-increasing for buried hill oil pool high-water-cut oil-producing well as claimed in claim 1 or 2,
It is characterized in that, the moisture content of described high-water-cut oil-producing well is more than 90%.
8. the oil production method of the water-control oil-increasing for buried hill oil pool high-water-cut oil-producing well as claimed in claim 2, it is special
Levying and be, the moisture content of described high-water-cut oil-producing well is more than 90%, in described step S20, injects described target
The gas injection rate of gas injection well is 900,000 side-110 ten thousand sides, day steam injection amount be 40,000 side-5 ten thousand sides, in described step S21,
The stewing well time is 30 days-40 days.
9. the oil production method of the water-control oil-increasing for buried hill oil pool high-water-cut oil-producing well as claimed in claim 2, it is special
Levying and be, the moisture content of described high-water-cut oil-producing well is 100%, in described step S20, injects described target gas injection
The gas injection rate of well is 1,200,000 side-140 ten thousand sides, day steam injection amount be 40,000 side-5 ten thousand sides, in described step S21,
The stewing well time is 30 days-40 days.
10. the oil production method of the water-control oil-increasing for buried hill oil pool high-water-cut oil-producing well as claimed in claim 1, it is special
Levying and be, becoming the development phase before high-water-cut oil-producing well, described high-water-cut oil-producing well is opened by natural reservoir energy
Originating party formula is developed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610308363.0A CN105863581A (en) | 2016-05-11 | 2016-05-11 | Oil extraction method for water controlling and oil increasing of buried hill oil reservoir high-water-cut oil-producing well |
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|---|---|---|---|
| CN201610308363.0A CN105863581A (en) | 2016-05-11 | 2016-05-11 | Oil extraction method for water controlling and oil increasing of buried hill oil reservoir high-water-cut oil-producing well |
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| CN109826599A (en) * | 2019-01-08 | 2019-05-31 | 中国石油大学(北京) | The determination method and system of thickened oil recovery gas injection rate |
| CN110714742A (en) * | 2018-07-12 | 2020-01-21 | 中国石油化工股份有限公司 | Method for improving recovery ratio of bottom water condensate gas reservoir |
| CN112443300A (en) * | 2019-09-05 | 2021-03-05 | 沈阳烳汇科技有限公司 | Method for high-yield fractured buried hill oil reservoir |
| CN114427428A (en) * | 2020-10-14 | 2022-05-03 | 中国石油化工股份有限公司 | Method for improving recovery ratio by controlling water under stable pressure in bottom water heavy oil reservoir |
| CN114592834A (en) * | 2020-12-07 | 2022-06-07 | 中国石油天然气股份有限公司 | Intersegment productivity replacing method and intersegment productivity replacing system for gas injection three-dimensional development of horizontal well |
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