CN108661611A - A kind of Reservoir behavior flooding method - Google Patents
A kind of Reservoir behavior flooding method Download PDFInfo
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- CN108661611A CN108661611A CN201710214530.XA CN201710214530A CN108661611A CN 108661611 A CN108661611 A CN 108661611A CN 201710214530 A CN201710214530 A CN 201710214530A CN 108661611 A CN108661611 A CN 108661611A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000003129 oil well Substances 0.000 claims abstract description 40
- 238000004519 manufacturing process Methods 0.000 claims abstract description 24
- 238000012545 processing Methods 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000002347 injection Methods 0.000 claims abstract description 10
- 239000007924 injection Substances 0.000 claims abstract description 10
- 239000010865 sewage Substances 0.000 claims description 17
- 238000010793 Steam injection (oil industry) Methods 0.000 claims description 11
- 238000004064 recycling Methods 0.000 claims description 9
- 239000002352 surface water Substances 0.000 claims description 4
- 230000001351 cycling effect Effects 0.000 claims description 3
- 230000020477 pH reduction Effects 0.000 claims description 3
- 238000011161 development Methods 0.000 abstract description 15
- 238000011084 recovery Methods 0.000 abstract description 9
- 239000012530 fluid Substances 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 51
- 230000035699 permeability Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 239000013589 supplement Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000006735 deficit Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 208000016253 exhaustion Diseases 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002699 waste material 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
-
- 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
- E21B43/20—Displacing by water
-
- 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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- 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)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
A kind of Reservoir behavior flooding method is disclosed, including:Oil well is divided into common producing well, abandoned well, aerogenesis oil well and stripper well by reservoir pressure, oil-producing and the aerogenesis situation that block is closed according to oil field;Reservoir pressure is monitored, the stripper well is repeated and improves strata pressure processing closing well equilibrium strata pressure processing, until the yield of stripper well is less than oil field closing block abandoned well or the output standard of aerogenesis oil well;The processing of water filling closing well equilibrium strata pressure is repeated to abandoned well;The processing of gas injection closing well equilibrium strata pressure is repeated to aerogenesis oil well.The implementation of the present invention can effectively reduce the speed of reservoir pressure reduction, change the direction of motion of fluid, according to the property of pressure distribution and production fluid, change type of drive and position in real time, water rate and gas output are reduced, the oil field development time is extended, improves ultimate recovery.
Description
Technical field
The present invention relates to oil development technical fields, more particularly, to a kind of Reservoir behavior flooding method.
Background technology
Latter period of oilfield development, due to oil reservoir energy drain, pneumatic jack moves down so that the gas production in oil field rises, under oil production
Drop, overall efficiency decline, and ultimate recovery declines.
The technological measures such as water filling, steam injection, gas injection mainly are taken for the prior art of oil field energy decline at present, are improved
Stratum energy keeps well yield, by the water filling near oil-water interfaces, promotes waterline to promote to improve reservoir pressure, increase
Yield.But due to the anisotropic of oil reservoir, the fltting speed of waterline differs, and hole pattern determine after there are immutableness,
To cause part well High water cut, flood effectiveness to be deteriorated.
In sandstone oil reservoir, due to the anisotropy of permeability, the recovery ratio of the higher plane of permeability and longitudinal crude oil compared with
Height, it is relatively low in the lower Regional Output rate of permeability.The method that oil field uses mainly arranges water injection well in defined well pattern
And gas injection well, stratum energy is improved by water filling, gas injection, but the permeability anisotropy on stratum (permeability different), water drive
Forward position gap is larger, and with well spacing lower part high-yield well production fluid aqueous up to 99%, part stripper well is single since permeability is relatively low
Well production is relatively low.
In certain pneumatic jack type oil reservoirs, stratum energy supplements the elastic energy for relying primarily on pneumatic jack.With the progress of exploitation, gas
Energy gradually failure is pushed up, part individual well pneumatic jack coning causes well yield to reduce, but still has around the well and largely do not employ storage
Amount, to cause to waste.It is mended therefore, it is necessary to develop a kind of Reservoir behavior flooding method to realize that oil reservoir exploits the energy in later stage
It fills.
The information for being disclosed in background of invention part is merely intended to deepen the reason of the general background technology to the present invention
Solution, and it is known to those skilled in the art existing to be not construed as recognizing or imply that the information is constituted in any form
Technology.
Invention content
It is an object of the invention to solve above-mentioned problem existing in the prior art, a kind of Reservoir behavior displacement of reservoir oil side is provided
Method focuses on the whole level from oil reservoir development and is mended to adjust and improve development scheme with realizing that oil reservoir exploits the energy in later stage
It fills, takes the techniques such as water filling, steam injection, gas injection to realize exploitation energy supplement respectively in all kinds of wells using the dynamic cataloging of producing well
Real-time volume adjusts.
Reservoir behavior flooding method according to the present invention includes:
Oil well is divided into common producing well, discarded by reservoir pressure, oil-producing and the aerogenesis situation that block is closed according to oil field
Oil well, aerogenesis oil well and stripper well;
Reservoir pressure is monitored, the stripper well is repeated and improves strata pressure processing-closing well equilibrium strata pressure
Processing, until the yield of stripper well is less than oil field closing block abandoned well or the output standard of aerogenesis oil well;
Water filling-closing well equilibrium strata pressure processing is repeated to abandoned well;
Gas injection-closing well equilibrium strata pressure processing is repeated to aerogenesis oil well.
Preferably, improving strata pressure processing includes:To the stripper well carry out steam injection or acidification or
Small-scale pressure break or it is carried out at the same time steam injection and small-scale pressure break.
Preferably, the producing well gas cycling that surface gathering and transferring station is recycled is subjected to gas injection to the aerogenesis oil well to it.
Preferably, the production well gas of surface gathering and transferring station recycling is recycled into described again after gas treatment station is handled
Aerogenesis oil well.
Preferably, by producing well sewage or surface water that surface gathering and transferring station is recycled be recycled into the abandoned well to its into
Row water filling.
Preferably, the producing well sewage of surface gathering and transferring station recycling is recycled into described again after Sewage Disposal is handled
Abandoned well.
The implementation of the present invention can effectively reduce the speed of reservoir pressure reduction, change the direction of motion of fluid, according to pressure
Power is distributed and the property of production fluid, changes type of drive and position in real time, reduces water rate and gas output, when extending oil field development
Between, improve ultimate recovery.
Methods and apparatus of the present invention has other characteristics and advantages, these characteristics and advantages attached from what is be incorporated herein
It will be apparent in figure and subsequent specific embodiment, or will be in the attached drawing and subsequent specific implementation being incorporated herein
It is stated in detail in example, these the drawings and specific embodiments are used together to explain the specific principle of the present invention.
Description of the drawings
Exemplary embodiment of the present is described in more detail in conjunction with the accompanying drawings, of the invention is above-mentioned and other
Purpose, feature and advantage will be apparent, wherein in exemplary embodiments of the present invention, identical reference label is usual
Represent same parts.
Fig. 1 is the flow chart according to the Reservoir behavior flooding method of the exemplary implementation scheme of the present invention.
Fig. 2 is the schematic diagram for implementing the exemplary implementation scheme of the present invention.
Reference sign:
M1, pneumatic jack;M2, oil reservoir;M3, area in debt;1, common producing well;2, abandoned well;3, aerogenesis oil well;4, low oil production
Well;W0, the producing well sewage for transporting to gathering station;The sewage that W1, surface gathering and transferring station are recycled;W2, the reinjected water by sewage disposal;
G0, the production well gas for transporting to gathering station;The gas that G1, surface gathering and transferring station are recycled;G2, treated recycle gas;F1, oil gas
Gathering station;F2, gas treatment station;F3, Sewage Disposal;F4, S/F/S+F equipment, wherein S indicates that steam injection, F indicate small
Scale pressure break, S+F are steam injection+small-scale pressure break.
Specific implementation mode
The present invention is more fully described below with reference to accompanying drawings.Although showing the preferred embodiment of the present invention in attached drawing,
However, it is to be appreciated that may be realized in various forms the present invention without should be limited by embodiments set forth here.On the contrary, providing
These embodiments are of the invention more thorough and complete in order to make, and can will fully convey the scope of the invention to ability
The technical staff in domain.
The present invention is to solve the problems, such as that mid-late oilfield development closing block carries out the production practice of oil reservoir energy supplement.
In the process of development, in contemporaneity, Thief zone area recovery percent of reserves is high, and hyposmosis area recovery percent of reserves is relatively low, so same
The oil well of one block shows volume variance, in same oil well, shows the difference of production profile.Latter period of oilfield development, due to
The deficit of oil-producing formation, pneumatic jack move down so that the oil production in oil field declines, and overall efficiency glides.But due to the difference of series of strata,
In the longitudinal direction of oil reservoir and plane there are remaining oil, the modifications and adaptations for carrying out development scheme to oil field are needed, are finally adopted with improving
Yield.
Reservoir behavior flooding method according to an exemplary embodiment of the present invention is described in detail below with reference to Fig. 1, mainly wraps
It includes:
(1) oil well is divided by common producing well, abandoned oil according to the reservoir pressure of oil field block, oil-producing and aerogenesis situation
Well, aerogenesis oil well and stripper well.
Using a closing block in oil field as research object, oil well is divided according to reservoir pressure, production water and aerogenesis situation
For common producing well, abandoned well, aerogenesis oil well and stripper well.
Abandoned well is that common producing well long-term production deficit causes;Gas-producing well is common producing well long-term production pneumatic jack cone
Into causing;Stripper well is that long-term yield is relatively low, contributes less oil well.
(2) reservoir pressure is monitored, raising strata pressure processing-closing well, which is repeated, to the stripper well is evenly laminated
Power processing, until the yield of stripper well is less than oil field closing block abandoned well or the output standard of aerogenesis oil well.
Reservoir pressure is monitored, the stripper well is carried out to improve strata pressure measure-closing well equilibrium strata pressure-again
Strata pressure measure-closing well equilibrium strata pressure ┉ again is improved, until the yield of stripper well oil is less than field area block abandoned oil
The output standard of well or aerogenesis oil well.By carrying out steam injection either acidification, small-scale pressure break or simultaneously to stripper well
Steam injection+small-scale pressure break is carried out to improve strata pressure, expands oil flow channel, improves the higher low oil production of substantial oil-containing
Well yield.With the promotion of stripper well moisture content or air content, closing well equilibrium strata pressure after a certain period of time, then drives a well
Production, repeatedly, until closing well when stripper well reaches abandoned well or the aerogenesis oil well criteria for classifying.
(3) water filling-closing well equilibrium strata pressure processing is repeated to abandoned well.
It is anti-to abandoned well (including newly generated abandoned well, such as the new abandoned well that is generated in step (4))
Water filling-closing well equilibrium strata pressure processing is carried out again improves stratum driving pressure and flow to maintain the elastic energy of pneumatic jack.
The producing well sewage or surface water that surface gathering and transferring station is recycled can be recycled into abandoned well and it is noted
Water.
Ground gathering station can be transformed, the producing well sewage that surface gathering and transferring station is recycled is by sewage disposal portion
It is recycled into again in aerogenesis oil well after processing.
Sewage constantly occupies oil reservoir space in oil reservoir bottom, since sewage proportion is larger, when covering oil reservoir energy, in oil reservoir
In migration, gradually develop from bottom to top, such stratum energy obtain supplement restore.
(4) gas injection-closing well equilibrium strata pressure processing is repeated to aerogenesis oil well.
It is anti-to aerogenesis oil well (including newly generated aerogenesis oil well, such as the new aerogenesis oil well that is generated in step (4))
Gas injection-closing well equilibrium strata pressure processing is carried out again improves stratum driving pressure and flow to maintain the elastic energy of pneumatic jack.
Gas injection can will be carried out to it in producing well gas cycling to aerogenesis oil well that surface gathering and transferring station is recycled.
Ground gathering station can be transformed, the production well gas that surface gathering and transferring station is recycled is by gas treatment station
It is recycled into again in aerogenesis oil well after processing.
By the processing of step (3) and step (4), energy consumption is advantageously reduced, further extends oilfield life, improves oil field
Recovery ratio reduces development cost.The processing of step (3) and step (4) takes and first gives first priority to note, the principle that foreknowledge is first noted.
Using example
Implement the Reservoir behavior flooding method of the present invention to oil field block shown in Fig. 2 below.
Latter period of oilfield development, due to M3 deficits area, pneumatic jack M1 is moved down so that and the gas production in oil field rises, and oil production declines,
Overall efficiency declines, oil reservoir M2 energy exhaustions, and ultimate recovery declines, and considers development contradiction, needs to carry out changing for development scheme
Into and adjustment.
Oil well is divided into common producing well by reservoir pressure, oil-producing and the aerogenesis situation of oil field block according to Fig.2,
1, abandoned well 2, aerogenesis oil well 3 and stripper well 4;
Ground gathering station F1 is transformed:By the production well gas G0 by surface gathering and transferring station F1 recycling by gas
It is recycled into aerogenesis oil well 3 after the F2 processing of reason station, by the producing well sewage W0 by surface gathering and transferring station F1 recycling by sewage
After the F3 processing of reason station, it is injected into abandoned well 2;
Monitor reservoir pressure, to stripper well 4 by S/F/S+F equipment F4 carry out steam inject S or small scale fracturing F or
Person is carried out at the same time steam injection+small scale fracturing S+F, expands oil flow channel, 4 yield of stripper well is improved, as stripper well 4 contains
The promotion of water rate or air content, closing well equilibrium strata pressure, after a certain period of time, then opening well and making production, repeatedly, until low oil production
Closing well when well 4 reaches abandoned well 2 or aerogenesis 3 criteria for classifying of oil well;
Water filling (surface water or treating stations sewage) is carried out to new abandoned well 2, gas injection is carried out to new aerogenesis oil well 3
(treating stations recycling gas) improves stratum driving pressure and flow, can reduce energy consumption to maintain the elastic energy of pneumatic jack, into
One step extends oilfield life, improves oil recovery rate, reduces development cost.
It will be understood by those skilled in the art that above to the purpose of the description of the embodiment of the present invention only for illustratively saying
The advantageous effect of bright the embodiment of the present invention is not intended to limit embodiments of the invention to given any example.
Various embodiments of the present invention are described above, above description is exemplary, and non-exclusive, and
It is not limited to disclosed each embodiment.Without departing from the scope and spirit of illustrated each embodiment, for this skill
Many modifications and changes will be apparent from for the those of ordinary skill in art field.The selection of term used herein, purport
In the principle, practical application or improvement to the technology in market for best explaining each embodiment, or make the art
Other those of ordinary skill can understand each embodiment disclosed herein.
Claims (6)
1. a kind of Reservoir behavior flooding method, which is characterized in that the method includes:
According to oil field close block reservoir pressure, oil-producing and aerogenesis situation by oil well be divided into common producing well, abandoned well,
Aerogenesis oil well and stripper well;
Reservoir pressure is monitored, the stripper well is repeated and improves strata pressure processing-closing well equilibrium strata pressure processing,
Until the yield of stripper well is less than oil field closing block abandoned well or the output standard of aerogenesis oil well;
Water filling-closing well equilibrium strata pressure processing is repeated to abandoned well;
Gas injection-closing well equilibrium strata pressure processing is repeated to aerogenesis oil well.
2. Reservoir behavior flooding method according to claim 1, which is characterized in that improving strata pressure processing includes:It is right
The stripper well carries out steam injection or acidification or small-scale pressure break or is carried out at the same time steam injection and small-scale
Pressure break.
3. Reservoir behavior flooding method according to claim 1, which is characterized in that the producing well for recycling surface gathering and transferring station
Gas cycling carries out gas injection to the aerogenesis oil well to it.
4. Reservoir behavior flooding method according to claim 3, which is characterized in that the production gas well gas of surface gathering and transferring station recycling
Body is recycled into the aerogenesis oil well again after gas treatment station is handled.
5. Reservoir behavior flooding method according to claim 1, which is characterized in that the producing well for recycling surface gathering and transferring station
Sewage or surface water are recycled into the abandoned well and carry out water filling to it.
6. Reservoir behavior flooding method according to claim 5, which is characterized in that the producing well of surface gathering and transferring station recycling is dirty
Water is recycled into the abandoned well again after Sewage Disposal is handled.
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CN201710214530.XA CN108661611A (en) | 2017-04-01 | 2017-04-01 | A kind of Reservoir behavior flooding method |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111022000A (en) * | 2019-03-04 | 2020-04-17 | 深圳市弘毅海洋智能装备有限公司 | Combustible ice mining method |
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2017
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WO2001006089A1 (en) * | 1999-07-16 | 2001-01-25 | Terralog Technologies Inc. | Enhanced oil recovery methods |
CN101942984A (en) * | 2010-01-27 | 2011-01-12 | 中国石油化工股份有限公司 | Fracture-cave type carbonate reservoir waterflooding oil replacement recovery method |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN111022000A (en) * | 2019-03-04 | 2020-04-17 | 深圳市弘毅海洋智能装备有限公司 | Combustible ice mining method |
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