CN107338029A - A kind of double slug Compositional type profile control agents of Fracture with low permeability oil reservoir and its application method - Google Patents
A kind of double slug Compositional type profile control agents of Fracture with low permeability oil reservoir and its application method Download PDFInfo
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- CN107338029A CN107338029A CN201710663697.4A CN201710663697A CN107338029A CN 107338029 A CN107338029 A CN 107338029A CN 201710663697 A CN201710663697 A CN 201710663697A CN 107338029 A CN107338029 A CN 107338029A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 103
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 84
- 238000004519 manufacturing process Methods 0.000 claims abstract description 20
- 239000004033 plastic Substances 0.000 claims abstract description 8
- 239000003921 oil Substances 0.000 claims description 94
- 235000019198 oils Nutrition 0.000 claims description 94
- 238000002347 injection Methods 0.000 claims description 34
- 239000007924 injection Substances 0.000 claims description 34
- 238000002360 preparation method Methods 0.000 claims description 19
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 15
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 15
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 15
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 15
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 claims description 14
- ZUGAOYSWHHGDJY-UHFFFAOYSA-K 5-hydroxy-2,8,9-trioxa-1-aluminabicyclo[3.3.2]decane-3,7,10-trione Chemical compound [Al+3].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O ZUGAOYSWHHGDJY-UHFFFAOYSA-K 0.000 claims description 14
- 239000004927 clay Substances 0.000 claims description 14
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 14
- 239000000194 fatty acid Substances 0.000 claims description 14
- 229930195729 fatty acid Natural products 0.000 claims description 14
- 239000000176 sodium gluconate Substances 0.000 claims description 14
- 235000012207 sodium gluconate Nutrition 0.000 claims description 14
- 229940005574 sodium gluconate Drugs 0.000 claims description 14
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 14
- 235000013162 Cocos nucifera Nutrition 0.000 claims description 13
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 13
- 150000004665 fatty acids Chemical class 0.000 claims description 13
- 244000060011 Cocos nucifera Species 0.000 claims description 12
- 239000003381 stabilizer Substances 0.000 claims description 11
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 10
- 239000001301 oxygen Substances 0.000 claims description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- 239000003814 drug Substances 0.000 claims description 8
- 235000019270 ammonium chloride Nutrition 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
- 239000010865 sewage Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 235000019864 coconut oil Nutrition 0.000 claims description 2
- 239000003240 coconut oil Substances 0.000 claims description 2
- DDXLVDQZPFLQMZ-UHFFFAOYSA-M dodecyl(trimethyl)azanium;chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(C)C DDXLVDQZPFLQMZ-UHFFFAOYSA-M 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 230000003068 static effect Effects 0.000 claims description 2
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims 4
- 239000003583 soil stabilizing agent Substances 0.000 claims 1
- 238000011084 recovery Methods 0.000 abstract description 20
- 239000004094 surface-active agent Substances 0.000 abstract description 12
- 239000000084 colloidal system Substances 0.000 abstract description 4
- 150000001875 compounds Chemical class 0.000 abstract description 4
- 230000007812 deficiency Effects 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 2
- 239000011435 rock Substances 0.000 description 73
- 206010017076 Fracture Diseases 0.000 description 37
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 36
- 208000010392 Bone Fractures Diseases 0.000 description 34
- 238000006073 displacement reaction Methods 0.000 description 22
- 238000005086 pumping Methods 0.000 description 21
- 238000002474 experimental method Methods 0.000 description 20
- 230000000694 effects Effects 0.000 description 15
- 238000007789 sealing Methods 0.000 description 13
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 12
- HSHXDCVZWHOWCS-UHFFFAOYSA-N N'-hexadecylthiophene-2-carbohydrazide Chemical compound CCCCCCCCCCCCCCCCNNC(=O)c1cccs1 HSHXDCVZWHOWCS-UHFFFAOYSA-N 0.000 description 11
- 238000004088 simulation Methods 0.000 description 11
- 238000011161 development Methods 0.000 description 10
- 230000018109 developmental process Effects 0.000 description 10
- 239000010779 crude oil Substances 0.000 description 9
- 239000012153 distilled water Substances 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
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- 238000012360 testing method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 239000003153 chemical reaction reagent Substances 0.000 description 4
- 241000237858 Gastropoda Species 0.000 description 3
- 239000006004 Quartz sand Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- -1 hydroxypropyl methyl Chemical group 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- MPNXSZJPSVBLHP-UHFFFAOYSA-N 2-chloro-n-phenylpyridine-3-carboxamide Chemical compound ClC1=NC=CC=C1C(=O)NC1=CC=CC=C1 MPNXSZJPSVBLHP-UHFFFAOYSA-N 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
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- 239000003431 cross linking reagent Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- SNRUBQQJIBEYMU-UHFFFAOYSA-N dodecane Chemical compound CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000002736 nonionic surfactant Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 230000010148 water-pollination Effects 0.000 description 2
- 241000737241 Cocos Species 0.000 description 1
- 206010020852 Hypertonia Diseases 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- UEZVMMHDMIWARA-UHFFFAOYSA-N Metaphosphoric acid Chemical compound OP(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
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- 238000013329 compounding Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000003346 palm kernel oil Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/512—Compositions based on water or polar solvents containing organic compounds macromolecular compounds containing cross-linking agents
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
-
- 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
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- Chemical & Material Sciences (AREA)
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- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
A kind of double slug Compositional type profile control agents of Fracture with low permeability oil reservoir and its application method, are related to field use chemical field.The present invention injects Fracture with low permeability oil reservoir by double slug forms, and preposed attributives have delay into colloidality, and viscosity is low when initial stage injects oil reservoir, can enter oil reservoir near wellbore zone, middle part, Deep Fractures, stable closure is formed after plastic；Rearmounted slug is compound surfactant, oil reservoir is injected after preposed attributives effectively block, surfactant flooding is implemented to the duct without closure, to reduce residual oil content in oil reservoir, increase injectivity index, improves the phenomenon that wax, colloid, asphalitine deposit near wellbore zone；Improve Reservoir Heterogeneity by way of double slug combinations, increase sequent water flooding sweep efficiency, suppress Fracture with low permeability oil reservoir region of bypassed oil and formed, to improve the drawbacks such as traditional oil production method, deficiency in economic performance low to Fracture with low permeability oil recovery.
Description
Technical field
The present invention relates to a kind of double slug Compositional type profile control agents of Fracture with low permeability oil reservoir and its application method, the profile control agent to change
Kind reservoir adaptability, and then Fracture with low permeability oil reservoir oil recovery can be improved, belong to field use chemical agent field.
Background technology
As deepening continuously for oil-gas exploration work, the raising year by year of degree of prospecting, oil-gas exploration difficulty are also more and more big,
Unconventional petroleum resources has turned into the focus of exploration and development.Fracture with low permeability oil reservoir has that permeability is low, pore throat is narrow and microcrack
The feature of development, and there is certain anisotropism；Due to the influence of the factors such as temperature, pressure, during easily causing water drive
Generation water breakthrough, fingering, non-available water circulating phenomenon；In operation process, reservoir is highly prone to the injury of the external fluid that is incompatible, simultaneously
Due to the influence of the factors such as temperature, pressure, easily cause wax, colloid, asphalitine and deposited near wellbore zone, formed organic stifled
Plug；A large amount of actual recoverys percent of reserves of Fracture with low permeability oil reservoir are 10%~20%, and recovery percent of reserves is relatively low, and partial fracture development is intensive
The waterflooding extraction of decades is passed through in oil field, and recovery ratio all the time could not be more than 20%, and exploitation of the tradition to Fracture with low permeability oil reservoir is related to
Problems with：
First, development of fields development effectiveness is deteriorated, aqueous rise is accelerated, and production decline is accelerated；Second, Fracture System
Influence, especially diaclase exacerbates the anisotropism of oil reservoir, and during waterflooding extraction, the injection water capacity is easily along crack system
System is advanced by leaps and bounds forward, thus it is quick along the oil well of fractuer direction, but moisture content rises also quickly, easily forms water breakthrough, or even make
Into sudden water flooding, reserves utilization rate is reduced, increases oil field development difficulty；Third, non-clinical visit rate grade is more and more lower, it is main
Concentrate in special low abundance and ultra-low permeability reservoir, the technical difficulty of preferably block and waterflooding extraction is increasing；Fourth, open
Hair potentiality and effective measures gradually decrease, and cost increase, the contradiction of input and output increasingly increases.
Under these circumstances, traditional mining type and method are difficult to the needs for meeting the development of Fracture with low permeability oil reservoir, especially
Need for drop investment, cost declining and the effective way for dropping energy consumption, carry out supporting practical development technique tackling key problem, to studying and
Solve the problems, such as to improve rate of oil production, recovery ratio and economic benefit in oil field development, so as to promote the effective of Fracture with low permeability oil reservoir
Employ and commercial development.
Recovery efficiency technique demand is improved for Fracture with low permeability oil reservoir, the present invention designs a kind of double slug Compositional type profile control agents,
Overcome it is above-mentioned during water drive the drawbacks of.
The content of the invention
It is an object of the invention to provide a kind of double slug Compositional type profile control agent of Fracture with low permeability oil reservoir and its application method, its
It is characterised by, inject Fracture with low permeability oil reservoir by double slug forms, preposed attributives have delay into colloidality, during injection oil reservoir at initial stage
Viscosity is low, can enter oil reservoir near wellbore zone, middle part, Deep Fractures, stable closure is formed after plastic；Rearmounted slug is compounding surface
Activating agent, oil reservoir is injected after preposed attributives effectively block, surfactant flooding is implemented to the duct without closure, to reduce oil
Residual oil content, increase injectivity index, improve the phenomenon that wax, colloid, asphalitine deposit near wellbore zone in Tibetan；Pass through double sections
The mode of plug combination improves Reservoir Heterogeneity, increases sequent water flooding sweep efficiency, suppresses Fracture with low permeability oil reservoir region of bypassed oil and is formed,
To improve the drawbacks such as traditional oil production method, deficiency in economic performance low to Fracture with low permeability oil recovery.
To reach above-mentioned purpose, the present invention adopts the following technical scheme that.
It is an object of the invention to provide a kind of double slug Compositional type profile control agent of Fracture with low permeability oil reservoir and its application method, its
Main component is：Hydroxypropyl methyl cellulose, sodium gluconate, triethanolamine, calgon, clay stabilizer, citric acid
Aluminium, cocoanut fatty acid diethanolamide, dodecyl sodium sulfate；Wherein clay stabilizer concretely ammonium chloride, dodecane
Base trimethyl ammonium chloride and other be applied to Fracture with low permeability oil reservoir clay stabilizer；It is double for Fracture with low permeability oil reservoir, design
Slug formula profile control agent, is described with slug A profile control agents and slug B below.
It is steady that slug A profile control agents include hydroxypropyl methyl cellulose, sodium gluconate, triethanolamine, calgon, clay
Determine agent, aluminium citrate；In slug A profile control agents, hydroxypropyl methyl cellulose mass ratio is 0.1%-0.2%, sodium gluconate matter
It is 0.1%-0.2% to measure ratio, and triethanolamine mass ratio is 0.1%-0.2%, and calgon mass ratio is 0.1%-0.2%,
Clay stabilizer mass ratio is 0.2%-0.4%, and aluminium citrate mass ratio is 0.1%-0.2%, and remaining components are preparation water.
Preferably, in slug A profile control agents, hydroxypropyl methyl cellulose, sodium gluconate, triethanolamine, calgon,
Clay stabilizer, aluminium citrate mass ratio are 0.12%-0.18%：0.12%-0.18%：0.12%-0.18%：0.12%-
0.18%：0.25%-0.35%：0.12%-0.18%, remaining components are preparation water.
It is highly preferred that in slug A profile control agents, hydroxypropyl methyl cellulose, sodium gluconate, triethanolamine, hexa metaphosphoric acid
Sodium, clay stabilizer, aluminium citrate mass ratio are 0.15%：0.15%：0.15%：0.15%：0.3%：0.15%, remaining group
It is divided into preparation water.
Slug A profile control agent main function mechanism is that slug A is that the sealing agent into colloidality, sodium gluconate are made with delay
For delayer hydroxypropyl methyl cellulose can be made to be delayed plastic, viscosity is low, mobility is strong during beginning injection oil reservoir, can enter oil reservoir
Near wellbore zone, middle part, Deep Fractures, stable closure is formed after plastic；Aluminium citrate can strengthen hydroxypropyl methyl as crosslinking agent
Cohesion between cellulosic molecule, increase profile control agent stability, viscosity and broken glue time；Triethanolamine makes as auxiliary crosslinking agent
With, enhancing profile control agent stability, and the increase broken glue time；Calgon plays dispersant effect, can make hydroxypropyl methyl
Cellulose is intermolecular in aqueous to be more uniformly spread, and increase molecular coil periphery absorption affinity, is being split so as to improve profile control agent
Plugging effect in seam；Contain appropriate clay stabilizer in slug A, the hair of clay swelling phenomenon can be reduced in injection process
It is raw, avoid injecting hypertonia；Slug A is mainly used as blocking crack, hypertonic band in Fracture with low permeability oil reservoir, to improve the non-of oil reservoir
Homogenieity, make to be subsequently implanted into slug B and can enter and do not involve duct, so as to form double slugs synergies.
Slug B includes cocoanut fatty acid diethanolamide and dodecyl sodium sulfate；In slug B, coco-nut oil fatty acid
Diglycollic amide mass ratio is 1%-2%, and dodecyl sodium sulfate mass ratio is 1%-2%, and remaining components are preparation water.
Preferably, in slug B, cocoanut fatty acid diethanolamide, dodecyl sodium sulfate mass ratio are 1.3%-
1.7%：1.3%-1.7%, remaining components are preparation water.
It is highly preferred that in slug B, cocoanut fatty acid diethanolamide, dodecyl sodium sulfate mass ratio are 1.5%：
1.5%, remaining components are preparation water.
Slug B main function mechanism is, by nonionic surfactant cocoanut fatty acid diethanolamide with it is cloudy from
Sub- surfactant dodecyl sodium sulfate compound synergic, plays surfactant cooperative effect；Compound surfactant solution
With relatively low surface and interface tension force, and stronger wettability, rock hydrophily can be improved, reach washing oil mesh indirectly
, to reduce residual oil content in oil reservoir, increase oil reservoir injectivity index；Two kinds of surfactant compounds, its salt resistance energy can be increased
Power, different types of stratum water can be adapted to；And two kinds of surfactant compound application effects are better than single surface-active
Agent；After slug A forms effectively closure, slug B is injected into oil reservoir, can enter and not involve duct progress surfactant flooding, with
Reduce residual oil in duct to block to caused by oil reservoir, strengthen its flow conductivity；The present invention is changed by way of double slug combinations
Kind Reservoir Heterogeneity, increases sequent water flooding sweep efficiency, suppresses Fracture with low permeability oil reservoir region of bypassed oil and is formed, and passes through sequent water flooding
Oil reservoir is further developed.
The application method of the double slug Compositional type profile control agents of a kind of Fracture with low permeability oil reservoir, it is characterised in that comprise the following steps：
Step 1. combines oil field actual production design data profile control agent injection rate, injection rate and other injection parameters；
Step 2. carries out sudden and violent oxygen processing to preparing water, prepares water and uses oilfield sewage or source water, is dissolved preparing in water
Oxygen content is reduced to below 3mg/L；
Under the conditions of 15-55 DEG C of step 3. temperature range, in the mixing container, medicament is added to preparing in water, is at the uniform velocity stirred
4-6 hours, obtain profile control agent；
Water injection well is connected by step 4. with stainless steel and supercharging device, starts supercharging device, profile control agent is injected into oil reservoir；
Static 48-72 hours make the abundant plastic of profile control agent after step 5. slug A profile control agent injection rates reach preset range；
Step 6. injects driven water-replacing 0.3PV, injects slug B, then carries out follow-up note and adopts operation.
The specific injection rate of profile control agent is：Slug A profile control agent 0.1-0.2PV are injected first into oil reservoir or rock core, wait 48-
Make within 72 hours the abundant plastic of slug A profile control agents, then to driven water-replacing 0.3PV is injected in oil reservoir or rock core, then to oil reservoir or rock
Slug B0.2-0.3PV is injected in the heart, is then carried out follow-up note and is adopted operation.
The present invention the advantage is that relative to prior art：
1st, recovery efficiency technique demand is improved for Fracture with low permeability oil reservoir, the present invention designs a kind of double slugs of Fracture with low permeability oil reservoir
Deep electrical structure, it is characterised in that slug A profile control agents have delay into colloidality, and viscosity is low when initial stage injects oil reservoir, can enter oil
Near wellbore zone, middle part, Deep Fractures are hidden, stable closure is formed after plastic.
2nd, in slug A, it is stable can to increase profile control agent as additive agent for aluminium citrate, triethanolamine, calgon
Property, viscosity and broken glue time, adaptability of the enhancing profile control agent in Fracture with low permeability oil reservoir, so as to improve profile control agent in crack
Plugging effect.
3rd, in slug B, nonionic surfactant cocoanut fatty acid diethanolamide and anion surface active are passed through
Agent dodecyl sodium sulfate compound synergic, plays surfactant cooperative effect, and its application effect is better than single surfactant,
The phenomenon that wax, colloid, asphalitine deposit near wellbore zone can be improved, and the hydrophily of oil reservoir can be improved.
4th, the present invention injects form by double slugs, and improvement Fracture with low permeability Reservoir Heterogeneity, recovery percent of reserves are low, water suction refers to
The low and water injection pressure of number is big, increases sequent water flooding sweep efficiency, suppresses region of bypassed oil generation, to improve traditional oil production method to hypotonic
The drawbacks such as Fractured Reservoir recovery ratio is low, deficiency in economic performance.
Embodiment
Experimental method used in following embodiments is conventional method unless otherwise specified.
The hydroxypropyl methyl cellulose used in following embodiments is that Renqiu City profit produces up to Chemical Co., Ltd., content：
>=99%；Sodium gluconate produces for Shanghai Yi Hui Chemical Co., Ltd.s, content 99%；Triethanolamine is Nanjing chemical reagent stock
The production of part Co., Ltd, analyzes pure AR；Calgon produces for Shandong Ding Xin bio tech ltd, and 98%；Ammonium chloride
Produced for Nanjing chemical reagent limited company, specification：ACS, 99.5%；DTAC is Nanjing chemistry
Reagent limited company produces, purity 98%；Aluminium citrate produces for Jinan Xin Ya Chemical Co., Ltd.s, top pure grade GR；Coconut palm
Seed oil fatty diglycollic amide is the chemical limited company's production in the small open country in Shandong, and analysis is pure；Dodecyl sodium sulfate is south
Capital chemical reagent limited company produces, and analyzes pure AR.
Profile control agent plugging effect is evaluated by laboratory core experimental method, it is specific as follows：
Embodiment one：
1st, profile control agent application method：(1) sudden and violent oxygen processing is carried out to preparing water first, will prepare content of oxygen dissolved in water reduces
To below 3mg/L；(2) under the conditions of 15 DEG C of temperature, medicament is added to preparing in water, at the uniform velocity stirs 4 hours, obtains profile control agent；(3)
Profile control agent is directly injected into rock core after the completion of preparation.
2nd, water is prepared, is 500mg/L by adding NaCl into distilled water and adjusting to salinity, is produced to simulation oil field
The middle source water used.
3rd, concrete medicament application amount is：
Slug A：Hydroxypropyl methyl cellulose, sodium gluconate, triethanolamine, calgon, ammonium chloride, aluminium citrate
Mass ratio is 0.15%：0.15%：0.15%：0.15%：0.3%：0.15%, remaining components are preparation water.
Slug B：Cocoanut fatty acid diethanolamide, dodecyl sodium sulfate mass ratio are 1.5%：1.5%, remaining group
It is divided into preparation water.
4th, specific rock core manufacture scale is as follows：
Experiment rock core is quartz sand epoxy resin cementitious homogeneous artificial core, and specific size is 4.5cm*4.5cm*
30cm, perm-plug method 30*10-3μm2, and the zink rod of 3% volume fraction is uniformly added into rock core manufacturing process, it is long
The high 0.05mm of the wide 0.2cm of 0.5cm, to simulate oil reservoir microcrack；Mould is carried out to Fracture with low permeability oil reservoir by manually manufacturing rock core
Intend.
5th, displacement oil is crude oil, viscosity 37mPa.s in the case of 30 DEG C.
6th, sealing characteristics test operating procedure is as follows：
(1) rock core to be used is put into acidproof core holding unit, positive displacement, 30% concentration dilute sulfuric acid of displacement, until
Continue to inject dilute sulfuric acid 5PV, distilled water 5PV after producing without gas in rock core, to ensure that zink rod total overall reaction is discharged with dilute sulfuric acid,
Rock core is taken out after injection；
(2) rock core to be used is put into 70 DEG C of insulating boxs and is dried to constant weight, weighed its quality after taking out cooling, be designated as
m1；
(3) rock core after drying is put into saturation in vacuum pumping device and prepares water, when observation core surface bubble-free generates
Stop pumping, surface water is removed into rock core taking-up wiping, weighed, quality is designated as m2；
(4) rock core that saturation is configured to water is put into core holding unit, adds confined pressure 4MPa, then with 0.2mL/min speed
The injection configuration water into rock core is spent, the pressure and flow are recorded when pressure stability；
(5) the positive injection slug A profile control agent 0.15PV into rock core, record pressure during injection profile agent, it is small to stand 60
When it is stand-by；
(6) water drive is carried out with 1mL/min speed, record outlet brings out the first breakthrough pressure when dripping, and treats that pressure is steady
The time recording pressure and flow；
(7) whole experiment is carried out in the case of 30 DEG C of constant temperature, is permeated after calculating original permeability according to record result, block up
Rate, sealing ratiod, breakthrough pressure gradient, resistance coefficient.
7th, sealing characteristics evaluation such as following table
Permeability is permeability after zink rod discharge before stifled, from the above in can draw, slug A profile control agents are to simulation core
Profile control effect is obvious, and simulation fracture has formed firm closure, and non-sealing region still has certain fluidity, illustrate the profile control agent with
Simulate source water to combine without negative effect, and seepage channel is left for follow-up slug B.
8th, oil-displacement capacity test operating procedure is as follows：
(1) rock core to be used is put into acidproof core holding unit, positive displacement, 30% concentration dilute sulfuric acid of displacement, until
Continue to inject dilute sulfuric acid 5PV, distilled water 5PV after producing without gas in rock core, to ensure that zink rod total overall reaction is discharged with dilute sulfuric acid,
Rock core is taken out after injection；
(2) rock core to be used is put into 70 DEG C of insulating boxs and is dried to constant weight, weighed its quality after taking out cooling, be designated as
m3；
(3) rock core after drying is put into saturation in vacuum pumping device and prepares water, when observation core surface bubble-free generates
Stop pumping, surface water is removed into rock core taking-up wiping, weighed, quality is designated as m4；
(4) with 1mL/min speed into rock core saturation crude oil, be driven to the port of export no longer water outlet when termination of pumping, record is accumulative
Water yield, stand 4 hours it is stand-by；
(5) rock core of the complete crude oil of saturation being put into core holding unit, whole process experiment is carried out in the case of 30 DEG C of constant temperature, with
2mL/min speed carries out water drive oil, be driven to the port of export it is no longer fuel-displaced when termination of pumping, record oil pump capacity and recovery ratio；
(6) with the positive injection slug A profile control agent 0.1PV of 0.9mL/min speed, placed 48 hours after having noted, then note
Enter to prepare water 0.3PV, be subsequently injected into slug B0.25PV, termination of pumping；
(7) positive water drive experiment is carried out, stops experiment when being driven to aqueous 98%, records oil pump capacity, and it is final to calculate rock core
Recovery ratio value.
9th, oil-displacement capacity evaluation such as following table：
Learnt from above-mentioned data, prepare profile control agent using simulation source water, displacement is carried out in the case of 30 DEG C of oil reservoir is simulated
Experiment, after implementing profile control to simulation core, its Fracture System is improved, has improved recovery ratio 25.1%, illustrate profile control agent of the present invention
Reservoir Heterogeneity can be improved, profile control effect is obvious.
Embodiment two：
1st, profile control agent application method：(1) sudden and violent oxygen processing is carried out to preparing water first, will prepare content of oxygen dissolved in water reduces
To below 3mg/L；(2) under the conditions of 35 DEG C of temperature, medicament is added to preparing in water, at the uniform velocity stirs 5 hours, obtains profile control agent；(3)
Profile control agent is directly injected into rock core after the completion of preparation.
2nd, water is prepared, is 8000mg/L by adding NaCl into distilled water and adjusting to salinity, to simulate actual life
The oilfield sewage used in production.
3rd, concrete medicament application amount is：
Slug A：Hydroxypropyl methyl cellulose, sodium gluconate, triethanolamine, calgon, trimethyl
Ammonium chloride, aluminium citrate mass ratio are 0.1%：0.1%：0.1%：0.1%：0.2%：0.1%, remaining components are preparation water.
Slug B：Cocoanut fatty acid diethanolamide, dodecyl sodium sulfate mass ratio are 1%：1%, remaining components are
Prepare water.
4th, specific rock core manufacture scale is as follows：
Experiment rock core is quartz sand epoxy resin cementitious homogeneous artificial core, and specific size is 4.5cm*4.5cm*
30cm, perm-plug method 30*10-3μm2, and the zink rod of 3% volume fraction is uniformly added into rock core manufacturing process, it is long
The high 0.05mm of the wide 0.2cm of 0.5cm, to simulate oil reservoir microcrack；Mould is carried out to Fracture with low permeability oil reservoir by manually manufacturing rock core
Intend.
5th, displacement oil is crude oil, viscosity 32mPa.s in the case of 50 DEG C.
6th, sealing characteristics test operating procedure is as follows：
(1) rock core to be used is put into acidproof core holding unit, positive displacement, 30% concentration dilute sulfuric acid of displacement, until
Continue to inject dilute sulfuric acid 5PV, distilled water 5PV after producing without gas in rock core, to ensure that zink rod total overall reaction is discharged with dilute sulfuric acid,
Rock core is taken out after injection；
(2) rock core to be used is put into 70 DEG C of insulating boxs and is dried to constant weight, weighed its quality after taking out cooling, be designated as
m5；
(3) rock core after drying is put into saturation in vacuum pumping device and prepares water, when observation core surface bubble-free generates
Stop pumping, surface water is removed into rock core taking-up wiping, weighed, quality is designated as m6；
(4) rock core that saturation is configured to water is put into core holding unit, adds confined pressure 4MPa, then with 0.2mL/min speed
The injection configuration water into rock core is spent, the pressure and flow are recorded when pressure stability；
(5) the positive injection slug A profile control agent 0.1PV into rock core, record pressure during injection profile agent, stand 48 hours
It is stand-by；
(6) water drive is carried out with 1mL/min speed, record outlet brings out the first breakthrough pressure when dripping, and treats that pressure is steady
The time recording pressure and flow；
(7) whole experiment is carried out in the case of 50 DEG C of constant temperature, is permeated after calculating original permeability according to record result, block up
Rate, sealing ratiod, breakthrough pressure gradient, resistance coefficient.
7th, sealing characteristics evaluation such as following table
Permeability is permeability after zink rod discharge before stifled, from the above in can draw, slug A profile control agents are to simulation core
Profile control effect is obvious, and simulation fracture has formed firm closure, and non-sealing region still has certain fluidity, illustrate the profile control agent with
Simulating oil field produced water is combined without negative effect, and leaves seepage channel for follow-up slug B.
8th, oil-displacement capacity test operating procedure is as follows：
(1) rock core to be used is put into acidproof core holding unit, positive displacement, 30% concentration dilute sulfuric acid of displacement, until
Continue to inject dilute sulfuric acid 5PV, distilled water 5PV after producing without gas in rock core, to ensure that zink rod total overall reaction is discharged with dilute sulfuric acid,
Rock core is taken out after injection；
(2) rock core to be used is put into 70 DEG C of insulating boxs and is dried to constant weight, weighed its quality after taking out cooling, be designated as
m7；
(3) rock core after drying is put into saturation in vacuum pumping device and prepares water, when observation core surface bubble-free generates
Stop pumping, surface water is removed into rock core taking-up wiping, weighed, quality is designated as m8；
(4) with 1mL/min speed into rock core saturation crude oil, be driven to the port of export no longer water outlet when termination of pumping, record is accumulative
Water yield, stand 4 hours it is stand-by；
(5) rock core of the complete crude oil of saturation being put into core holding unit, whole process experiment is carried out in the case of 50 DEG C of constant temperature, with
2mL/min speed carries out water drive oil, be driven to the port of export it is no longer fuel-displaced when termination of pumping, record oil pump capacity and recovery ratio；
(6) with the positive injection slug A profile control agent 0.15PV of 0.9mL/min speed, placed 48 hours after having noted, then note
Enter to prepare water 0.3PV, be subsequently injected into slug B0.2PV, termination of pumping；
(7) positive water drive experiment is carried out, stops experiment when being driven to aqueous 98%, records oil pump capacity, and it is final to calculate rock core
Recovery ratio value.
9th, oil-displacement capacity evaluation such as following table：
Learnt from above-mentioned data, prepare profile control agent using simulating oil field produced water, driven in the case of 50 DEG C of oil reservoir is simulated
For experiment, after implementing profile control to simulation core, its Fracture System is improved, has improved recovery ratio 27.82%, illustrate profile control of the present invention
Agent can improve Reservoir Heterogeneity, and profile control effect is obvious.
Embodiment three：
1st, profile control agent application method：(1) sudden and violent oxygen processing is carried out to preparing water first, will prepare content of oxygen dissolved in water reduces
To below 3mg/L；(2) under the conditions of 55 DEG C of temperature, medicament is added to preparing in water, at the uniform velocity stirs 6 hours, obtains profile control agent；(3)
Profile control agent is directly injected into rock core after the completion of preparation.
2nd, water is prepared, by adding solubility salt regulating mineralization degree of injected oil into distilled water, final salinity is 35000mg/
L, to simulate the oilfield sewage used in actual production.
3rd, concrete medicament application amount is：
Slug A：Hydroxypropyl methyl cellulose, sodium gluconate, triethanolamine, calgon, ammonium chloride, aluminium citrate
Mass ratio is 0.2%：0.2%：0.2%：0.2%：0.4%：0.2%, remaining components are preparation water.
Slug B：Cocoanut fatty acid diethanolamide, dodecyl sodium sulfate mass ratio are 2%：2%, remaining components are
Prepare water.
4th, specific rock core manufacture scale is as follows：
Experiment rock core is quartz sand epoxy resin cementitious homogeneous artificial core, and specific size is 4.5cm*4.5cm*
30cm, perm-plug method 30*10-3μm2, and the zink rod of 3% volume fraction is uniformly added into rock core manufacturing process, it is long
The high 0.05mm of the wide 0.2cm of 0.5cm, to simulate oil reservoir microcrack；Mould is carried out to Fracture with low permeability oil reservoir by manually manufacturing rock core
Intend.
5th, displacement oil is crude oil, viscosity 25.3mPa.s in the case of 70 DEG C.
6th, sealing characteristics test operating procedure is as follows：
(1) rock core to be used is put into acidproof core holding unit, positive displacement, 30% concentration dilute sulfuric acid of displacement, until
Continue to inject dilute sulfuric acid 5PV, distilled water 5PV after producing without gas in rock core, to ensure that zink rod total overall reaction is discharged with dilute sulfuric acid,
Rock core is taken out after injection；
(2) rock core to be used is put into 70 DEG C of insulating boxs and is dried to constant weight, weighed its quality after taking out cooling, be designated as
m9；
(3) rock core after drying is put into saturation in vacuum pumping device and prepares water, when observation core surface bubble-free generates
Stop pumping, surface water is removed into rock core taking-up wiping, weighed, quality is designated as m10；
(4) rock core that saturation is configured to water is put into core holding unit, adds confined pressure 4MPa, then with 0.2mL/min speed
The injection configuration water into rock core is spent, the pressure and flow are recorded when pressure stability；
(5) the positive injection slug A profile control agent 0.2PV into rock core, record pressure during injection profile agent, stand 72 hours
It is stand-by；
(6) water drive is carried out with 1mL/min speed, record outlet brings out the first breakthrough pressure when dripping, and treats that pressure is steady
The time recording pressure and flow；
(7) whole experiment is carried out in the case of 70 DEG C of constant temperature, is permeated after calculating original permeability according to record result, block up
Rate, sealing ratiod, breakthrough pressure gradient, resistance coefficient.
7th, sealing characteristics evaluation such as following table
Permeability is permeability after zink rod discharge before stifled, from the above in can draw, slug A profile control agents are to simulation core
Profile control effect is obvious, and simulation fracture has formed firm closure, and non-sealing region still has certain fluidity, illustrate the profile control agent with
Simulating oil field produced water is combined without negative effect, and leaves seepage channel for follow-up slug B.
8th, oil-displacement capacity test operating procedure is as follows：
(1) rock core to be used is put into acidproof core holding unit, positive displacement, 30% concentration dilute sulfuric acid of displacement, until
Continue to inject dilute sulfuric acid 5PV, distilled water 5PV after producing without gas in rock core, to ensure that zink rod total overall reaction is discharged with dilute sulfuric acid,
Rock core is taken out after injection；
(2) rock core to be used is put into 70 DEG C of insulating boxs and is dried to constant weight, weighed its quality after taking out cooling, be designated as
m11；
(3) rock core after drying is put into saturation in vacuum pumping device and prepares water, when observation core surface bubble-free generates
Stop pumping, surface water is removed into rock core taking-up wiping, weighed, quality is designated as m12；
(4) with 1mL/min speed into rock core saturation crude oil, be driven to the port of export no longer water outlet when termination of pumping, record is accumulative
Water yield, stand 4 hours it is stand-by；
(5) rock core of the complete crude oil of saturation being put into core holding unit, whole process experiment is carried out in the case of 70 DEG C of constant temperature, with
2mL/min speed carries out water drive oil, be driven to the port of export it is no longer fuel-displaced when termination of pumping, record oil pump capacity and recovery ratio；
(6) with the positive injection slug A profile control agent 0.2PV of 0.9mL/min speed, placed 72 hours after having noted, then note
Enter to prepare water 0.3PV, be subsequently injected into slug B0.3PV, termination of pumping；
(7) positive water drive experiment is carried out, stops experiment when being driven to aqueous 98%, records oil pump capacity, and it is final to calculate rock core
Recovery ratio value.
9th, oil-displacement capacity evaluation such as following table：
Learnt from above-mentioned data, prepare profile control agent using simulating oil field produced water, driven in the case of 70 DEG C of oil reservoir is simulated
For experiment, after implementing profile control to simulation core, its Fracture System is improved, has improved recovery ratio 26.21%, illustrate profile control of the present invention
Agent can improve Reservoir Heterogeneity, and profile control effect is obvious.
Claims (7)
1. the double slug Compositional type profile control agents of a kind of Fracture with low permeability oil reservoir, it is characterised in that including slug A profile control agents and slug B；
It is stable that slug A profile control agents include hydroxypropyl methyl cellulose, sodium gluconate, triethanolamine, calgon, clay
Agent, aluminium citrate；In slug A profile control agents, hydroxypropyl methyl cellulose mass ratio is 0.1%-0.2%, sodium gluconate quality
Than being 0.1%-0.2% for 0.1%-0.2%, triethanolamine mass ratio, calgon mass ratio is 0.1%-0.2%, is sticked
Soil stabilizer mass ratio is 0.2%-0.4%, and aluminium citrate mass ratio is 0.1%-0.2%, and remaining components are preparation water；And
Slug B includes cocoanut fatty acid diethanolamide and dodecyl sodium sulfate；In slug B, coco-nut oil fatty acid diethyl
Alkylolamides mass ratio is 1%-2%, and dodecyl sodium sulfate mass ratio is 1%-2%, and remaining components are preparation water.
A kind of 2. double slug Compositional type profile control agents of Fracture with low permeability oil reservoir as claimed in claim 1, it is characterised in that the clay
Stabilizer include ammonium chloride, DTAC and other be applied to Fracture with low permeability oil reservoir clay stabilizer.
A kind of 3. double slug Compositional type profile control agents of Fracture with low permeability oil reservoir as claimed in claim 1, it is characterised in that the slug
Hydroxypropyl methyl cellulose, sodium gluconate, triethanolamine, calgon, clay stabilizer, aluminium citrate in A profile control agents
Mass ratio is 0.12%-0.18%：0.12%-0.18%：0.12%-0.18%：0.12%-0.18%：0.25%-
0.35%：0.12%-0.18%, remaining components are preparation water.
A kind of 4. double slug Compositional type profile control agents of Fracture with low permeability oil reservoir as claimed in claim 1, it is characterised in that the slug
Hydroxypropyl methyl cellulose, sodium gluconate, triethanolamine, calgon, clay stabilizer, aluminium citrate in A profile control agents
Mass ratio is 0.15%：0.15%：0.15%：0.15%：0.3%：0.15%, remaining components are preparation water.
A kind of 5. double slug Compositional type profile control agents of Fracture with low permeability oil reservoir as claimed in claim 1, it is characterised in that the slug
Cocoanut fatty acid diethanolamide, dodecyl sodium sulfate mass ratio are 1.3%-1.7% in B：1.3%-1.7%, it is remaining
Component is preparation water.
A kind of 6. double slug Compositional type profile control agents of Fracture with low permeability oil reservoir as claimed in claim 1, it is characterised in that the slug
Cocoanut fatty acid diethanolamide, dodecyl sodium sulfate mass ratio are 1.5% in B：1.5%, remaining components are preparation water.
7. the application method of the double slug Compositional type profile control agents of a kind of Fracture with low permeability oil reservoir, it is characterised in that comprise the following steps：
Step 1. combines oil field actual production design data profile control agent injection rate, injection rate and other injection parameters；
Step 2. carries out sudden and violent oxygen processing to preparing water, prepares water and uses oilfield sewage or source water, will prepare oxygen in water and contains
Amount is reduced to below 3mg/L；
Under the conditions of 15-55 DEG C of step 3. temperature range, in the mixing container, medicament is added to preparing in water, it is small at the uniform velocity to stir 4-6
When, obtain profile control agent；
Water injection well is connected by step 4. with stainless steel and supercharging device, starts supercharging device, profile control agent is injected into oil reservoir；
Static 48-72 hours make the abundant plastic of profile control agent after step 5. slug A profile control agent injection rates reach preset range；
Step 6. injects driven water-replacing 0.3PV, injects slug B, then carries out follow-up note and adopts operation.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109294540A (en) * | 2018-09-19 | 2019-02-01 | 中国石油天然气股份有限公司 | A kind of profile control agent of oil deposit deep part and preparation method thereof of resistance to high mine degree |
-
2017
- 2017-08-06 CN CN201710663697.4A patent/CN107338029A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109294540A (en) * | 2018-09-19 | 2019-02-01 | 中国石油天然气股份有限公司 | A kind of profile control agent of oil deposit deep part and preparation method thereof of resistance to high mine degree |
| CN109294540B (en) * | 2018-09-19 | 2021-03-09 | 中国石油天然气股份有限公司 | High-salinity-resistant profile control agent for deep oil reservoir and preparation method thereof |
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