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CN108661611A - A kind of Reservoir behavior flooding method - Google Patents

A kind of Reservoir behavior flooding method Download PDF

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Publication number
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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CN
China
Prior art keywords
well
oil
aerogenesis
reservoir
abandoned
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710214530.XA
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Chinese (zh)
Inventor
王连生
李颖
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Petroleum and Chemical Corp
Sinopec Exploration and Production Research Institute
Original Assignee
China Petroleum and Chemical Corp
Sinopec Exploration and Production Research Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Petroleum and Chemical Corp, Sinopec Exploration and Production Research Institute filed Critical China Petroleum and Chemical Corp
Priority to CN201710214530.XA priority Critical patent/CN108661611A/en
Publication of CN108661611A publication Critical patent/CN108661611A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16Enhanced recovery methods for obtaining hydrocarbons
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/166Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
    • E21B43/168Injecting a gaseous medium
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/20Displacing by water
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/24Enhanced 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

A kind of Reservoir behavior flooding method
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.
CN201710214530.XA 2017-04-01 2017-04-01 A kind of Reservoir behavior flooding method Pending CN108661611A (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
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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Publication number Priority date Publication date Assignee Title
WO2001006089A1 (en) * 1999-07-16 2001-01-25 Terralog Technologies Inc. Enhanced oil recovery methods
CN101781982A (en) * 2010-02-25 2010-07-21 中国石油化工股份有限公司 Short-injection water injection well acidation injectivity process
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
CN102852505A (en) * 2012-09-24 2013-01-02 于文英 Oil production method for thin-medium thick layer super heavy oil hard-to-recover reserve
CN104895537A (en) * 2015-06-01 2015-09-09 中国石油集团川庆钻探工程有限公司 Water injection oil replacement mining method suitable for fracture-cavity type carbonate rock condensate gas reservoir
CN105507858A (en) * 2015-07-20 2016-04-20 塔里木油田分公司勘探开发研究院 Immiscible gas injection and oil replacement type exploitation method for ultra-deep fractured-vuggy carbonate reservoirs
CN106321053A (en) * 2015-07-01 2017-01-11 中国石油化工股份有限公司 Oil and gas well production increasing method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN101781982A (en) * 2010-02-25 2010-07-21 中国石油化工股份有限公司 Short-injection water injection well acidation injectivity process
CN102852505A (en) * 2012-09-24 2013-01-02 于文英 Oil production method for thin-medium thick layer super heavy oil hard-to-recover reserve
CN104895537A (en) * 2015-06-01 2015-09-09 中国石油集团川庆钻探工程有限公司 Water injection oil replacement mining method suitable for fracture-cavity type carbonate rock condensate gas reservoir
CN106321053A (en) * 2015-07-01 2017-01-11 中国石油化工股份有限公司 Oil and gas well production increasing method
CN105507858A (en) * 2015-07-20 2016-04-20 塔里木油田分公司勘探开发研究院 Immiscible gas injection and oil replacement type exploitation method for ultra-deep fractured-vuggy carbonate reservoirs

Cited By (2)

* Cited by examiner, † Cited by third party
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
CN111022000B (en) * 2019-03-04 2022-01-07 深圳市弘毅海洋智能装备有限公司 Combustible ice mining method

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