CN107254301A - A kind of hypertonic duct type oil reservoir chromium aluminium ion compounding profile control agent and its application method - Google Patents
A kind of hypertonic duct type oil reservoir chromium aluminium ion compounding profile control agent and its application method Download PDFInfo
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- CN107254301A CN107254301A CN201710654125.XA CN201710654125A CN107254301A CN 107254301 A CN107254301 A CN 107254301A CN 201710654125 A CN201710654125 A CN 201710654125A CN 107254301 A CN107254301 A CN 107254301A
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- profile control
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- mass ratio
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- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 100
- 238000000034 method Methods 0.000 title claims abstract description 28
- QQHSIRTYSFLSRM-UHFFFAOYSA-N alumanylidynechromium Chemical compound [Al].[Cr] QQHSIRTYSFLSRM-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 238000013329 compounding Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 110
- 229920000642 polymer Polymers 0.000 claims abstract description 46
- 238000002347 injection Methods 0.000 claims abstract description 30
- 239000007924 injection Substances 0.000 claims abstract description 30
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 22
- 238000002360 preparation method Methods 0.000 claims abstract description 21
- 239000004094 surface-active agent Substances 0.000 claims abstract description 18
- 239000000654 additive Substances 0.000 claims abstract description 15
- 230000000996 additive effect Effects 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 73
- 235000019198 oils Nutrition 0.000 claims description 73
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 30
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 claims description 26
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims description 26
- WYYQVWLEPYFFLP-UHFFFAOYSA-K chromium(3+);triacetate Chemical compound [Cr+3].CC([O-])=O.CC([O-])=O.CC([O-])=O WYYQVWLEPYFFLP-UHFFFAOYSA-K 0.000 claims description 24
- 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 23
- 235000010265 sodium sulphite Nutrition 0.000 claims description 15
- 239000004115 Sodium Silicate Substances 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 13
- VZOPRCCTKLAGPN-ZFJVMAEJSA-L potassium;sodium;(2r,3r)-2,3-dihydroxybutanedioate;tetrahydrate Chemical compound O.O.O.O.[Na+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O VZOPRCCTKLAGPN-ZFJVMAEJSA-L 0.000 claims description 13
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 13
- 229940074446 sodium potassium tartrate tetrahydrate Drugs 0.000 claims description 13
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 13
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 13
- 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 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 12
- 239000001301 oxygen Substances 0.000 claims description 12
- 229910052760 oxygen Inorganic materials 0.000 claims description 12
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 claims description 12
- 239000000176 sodium gluconate Substances 0.000 claims description 12
- 235000012207 sodium gluconate Nutrition 0.000 claims description 12
- 229940005574 sodium gluconate Drugs 0.000 claims description 12
- -1 hydroxy sulfo Chemical group 0.000 claims description 10
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 claims description 6
- 229960004889 salicylic acid Drugs 0.000 claims description 6
- 150000001408 amides Chemical class 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 5
- KWIUHFFTVRNATP-UHFFFAOYSA-N glycine betaine Chemical compound C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 239000010865 sewage Substances 0.000 claims description 4
- 230000003213 activating effect Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- QLNJFJADRCOGBJ-UHFFFAOYSA-N propionamide Chemical compound CCC(N)=O QLNJFJADRCOGBJ-UHFFFAOYSA-N 0.000 claims description 3
- 235000009754 Vitis X bourquina Nutrition 0.000 claims description 2
- 235000012333 Vitis X labruscana Nutrition 0.000 claims description 2
- 240000006365 Vitis vinifera Species 0.000 claims description 2
- 235000014787 Vitis vinifera Nutrition 0.000 claims description 2
- 235000019864 coconut oil Nutrition 0.000 claims description 2
- 239000003240 coconut oil Substances 0.000 claims description 2
- IDAGXRIGDWCIET-SDFKWCIISA-L disodium;(2s,3s,4s,5r)-2,3,4,5-tetrahydroxyhexanedioate Chemical compound [Na+].[Na+].[O-]C(=O)[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O IDAGXRIGDWCIET-SDFKWCIISA-L 0.000 claims description 2
- 230000007062 hydrolysis Effects 0.000 claims description 2
- 238000006460 hydrolysis reaction Methods 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
- 150000001412 amines Chemical class 0.000 claims 1
- 239000000084 colloidal system Substances 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 6
- 238000012546 transfer Methods 0.000 abstract description 5
- 230000010148 water-pollination Effects 0.000 abstract description 4
- 230000008595 infiltration Effects 0.000 abstract description 3
- 238000001764 infiltration Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000011435 rock Substances 0.000 description 62
- 238000005086 pumping Methods 0.000 description 21
- 230000000694 effects Effects 0.000 description 19
- 238000002474 experimental method Methods 0.000 description 19
- 238000011084 recovery Methods 0.000 description 18
- 230000035699 permeability Effects 0.000 description 12
- 238000007789 sealing Methods 0.000 description 12
- 238000006073 displacement reaction Methods 0.000 description 11
- 239000010779 crude oil Substances 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 238000003756 stirring Methods 0.000 description 8
- 238000001816 cooling Methods 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- 238000011017 operating method Methods 0.000 description 6
- 239000002352 surface water Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 230000009467 reduction Effects 0.000 description 5
- 238000004088 simulation Methods 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 238000001879 gelation Methods 0.000 description 4
- 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
- 230000003111 delayed effect Effects 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 239000012153 distilled water Substances 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 150000004665 fatty acids Chemical class 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 244000060011 Cocos nucifera Species 0.000 description 2
- 235000013162 Cocos nucifera Nutrition 0.000 description 2
- 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 2
- 229940123973 Oxygen scavenger Drugs 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- PMUIBVMKQVKHBE-UHFFFAOYSA-N [S].NC(N)=O Chemical compound [S].NC(N)=O PMUIBVMKQVKHBE-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000015784 hyperosmotic salinity response Effects 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 244000131522 Citrus pyriformis Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241000237858 Gastropoda Species 0.000 description 1
- 101150042248 Mgmt gene Proteins 0.000 description 1
- 240000000203 Salix gracilistyla Species 0.000 description 1
- 206010070863 Toxicity to various agents Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000012190 activator Substances 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
- 125000003368 amide group Chemical group 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229960003237 betaine Drugs 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- IJKVHSBPTUYDLN-UHFFFAOYSA-N dihydroxy(oxo)silane Chemical compound O[Si](O)=O IJKVHSBPTUYDLN-UHFFFAOYSA-N 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000002552 dosage form Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- BITYAPCSNKJESK-UHFFFAOYSA-N potassiosodium Chemical compound [Na].[K] BITYAPCSNKJESK-UHFFFAOYSA-N 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
Classifications
-
- 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
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/06—Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting, e.g. eliminating, the deposition of paraffins or like substances
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A kind of hypertonic duct type oil reservoir chromium aluminium ion compounding profile control agent and its application method, are related to field use chemical field.Profile control agent of the present invention is injected in hypertonic duct type oil reservoir by double slug forms, and preposed attributives mix multiple high polymer polyacrylamides and additive formation Complex polymer, and oil reservoir middle and high infiltration area, macropore are implemented to block；Rearmounted slug mixes multiple low molecular weight polyacrylamides and additive, possess that low viscosity, mobility be strong, shear resistant feature, injection oil reservoir carries out transfer drive after preposed attributives closure, water drive is produced after closure small-scale water breakthrough, fingering phenomenon can be suppressed, contain proper amount of surfactant in profile control agent, the hydrophily of reservoir rockses can be improved, suppress the phenomenon that the unmanageable wax of traditional profile control method, colloid, asphalitine are deposited near wellbore zone；Profile control agent compounding method of the present invention is simple, is suitable for salinity 500mg/L 35000mg/L preparation water, and raw material is cheap and easy to get.
Description
Technical field
The present invention relates to a kind of hypertonic duct type oil reservoir chromium aluminium ion compounding profile control agent and its application method, the profile control agent can
Improve reservoir adaptability, and then hypertonic duct type oil reservoir oil increasing effect can be improved, belong to field use chemical agent field.
Background technology
The waterflood recovery efficiency factor aggregate level of China's onshore oil field is relatively low, and generally below 50%, one of its major reason is water
The sweep efficiency of drive is relatively low；A key factor for influenceing water drive sweep efficiency is anisotropism；Hypertonic duct type oil reservoir has
Permeability is high, pore throat is wide and the feature of microcrack development, due to the complexity and rock surface property of pore structure, hypertonic duct
Type oil reservoir equally exists anisotropism；So that during water drive, the propulsion of water equably piston type can not advance, and cause injection water along height
Infiltration layer section is advanced by leaps and bounds, and local water breakthrough phenomenon is occurred, so as to reduce the sweep efficiency of injection water, is constrained waterflood recovery efficiency factor.
Traditional method is that its duct is blocked then to carry out water drive, in such a method, simple profile control and follow-up
Water drive be often difficult in adapt to the complexity of reservoir, cause the phenomenons such as small-scale water breakthrough, fingering after closure so that further carry
The difficulty of high water-flooding performance is larger.
Recovery efficiency technique demand is improved for hypertonic duct type oil reservoir, the present invention provides a kind of applied to hypertonic duct type oil
The chromium aluminium ion crosslinking Complex polymer type profile control agent of Tibetan, the problem of for solving set forth above.
The content of the invention
It is an object of the invention to provide a kind of hypertonic duct type oil reservoir chromium aluminium ion compounding profile control agent and its application method,
Injected by double slug forms in hypertonic duct type oil reservoir, preposed attributives mix multiple high polymer polyacrylamides and addition dosage form
Into Complex polymer, oil reservoir middle and high infiltration area, macropore are implemented to block；Rearmounted slug mixes multiple low molecular weight polyacrylamides
And additive, possess that low viscosity, mobility be strong, shear resistant feature, injection oil reservoir carries out transfer drive after preposed attributives closure, can
Suppress to contain proper amount of surfactant in water drive is produced after closure small-scale water breakthrough, fingering phenomenon, profile control agent, oil reservoir can be improved
The hydrophily of rock, suppresses the phenomenon that the unmanageable wax of traditional profile control method, colloid, asphalitine are deposited near wellbore zone；
Profile control agent compounding method of the present invention is simple, is suitable for salinity 500mg/L-35000mg/L preparation water, and raw material is inexpensively easy
.
To reach above-mentioned purpose, the present invention is adopted the following technical scheme that.
A kind of hypertonic duct type oil reservoir chromium aluminium ion compounds profile control agent, and its main component is：Partially hydrolyzed polyacrylamide (PHPA)
Relative molecular mass is respectively 500*104、800*104、1000*104、1200*104、1800*104、2400*104, chromium acetate, lemon
Lemon acid aluminium, sodium sulfite, resorcinol, thiocarbamide, sodium potassium tartrate tetrahydrate, surfactant, sodium metasilicate, sodium gluconate, bigcatkin willow
Acid；Wherein surfactant concretely NPE, cocamidopropyl propyl amide hydroxy sulfo lycine, detergent alkylate
Sodium sulfonate, cocoanut fatty acid diethanolamide, perfluoroalkyl betain or other be applied to hypertonic duct type oil reservoir surface
Activating agent；For hypertonic duct type oil reservoir, the double slug formula profile control agents of design, below with slug A profile control agents and slug B profile control agents come
It is described.
Slug A profile control agents include Complex polymer and additive；Wherein, Complex polymer is by three kinds of different molecular quality
Partially hydrolyzed polyacrylamide (PHPA) is constituted, and molecular mass is respectively 1200*104、1800*104、2400*104, its mass ratio is 15：
35：50；Additive includes chromium acetate, aluminium citrate, sodium sulfite, resorcinol, thiocarbamide, sodium potassium tartrate tetrahydrate；Slug A profile control agents
In, Complex polymer mass ratio is 0.2%-0.4%, and chromium acetate mass ratio is 0.05%-0.15%, and aluminium citrate mass ratio is
0.05%-0.15%, sodium sulfite mass ratio is 0.2%-0.4%, and resorcinol mass ratio is 0.2%-0.4%, thiocarbamide matter
Amount is than being 0.1%-0.3%, and sodium potassium tartrate tetrahydrate mass ratio is 0.15%-0.25%, and remaining components are to prepare water.
Preferably, in slug A profile control agents, Complex polymer, chromium acetate, aluminium citrate, sodium sulfite, resorcinol, sulphur
Urea, sodium potassium tartrate tetrahydrate mass ratio are 0.25%-0.35%：0.07%-0.13%：0.07%-0.13%：0.25%-0.35%：
0.25%-0.35%：0.15%-0.25%：0.17%-0.23%, remaining components are preparation water.
It is highly preferred that in slug A profile control agents, Complex polymer, chromium acetate, aluminium citrate, sodium sulfite, resorcinol,
Thiocarbamide, sodium potassium tartrate tetrahydrate mass ratio are 0.3%：0.1%：0.1%：0.3%：0.3%：0.22%：0.2%, remaining components are
Prepare water.
Slug A profile control agent main function mechanism is to pass through three kinds of high molecule mass partially hydrolyzed polyacrylamide (PHPA)s and chromium aluminium
Ionomer is compounded, and is formed molecular coil form polymer, is possessed matrix type cross-linked structure, with delayed gelation, colloid physical property
Stable, broken glue time length, salt tolerance feature, can implement firm closure to the high permeability area in reservoir, macropore；Sodium sulfite, sulphur
Urea can effectively suppress the viscosity reduction effect that the oxygen in configuration process and in oil reservoir is produced to profile control agent as oxygen scavenger, so as to strengthen poly-
The stability of compound；Sodium potassium tartrate tetrahydrate is used as dispersant, can make Complex polymer system is intermolecular to more uniformly spread, and is increased
Plus the peripheral absorption affinity of molecular coil, so as to improve plugging effect of the profile control agent in hypertonic duct type oil reservoir；Slug A is mainly used as
The high permeability area or macropore in hypertonic duct type oil reservoir are blocked, improves the anisotropism of hypertonic duct type oil reservoir, so that after improving
Continuous injection slug B oil displacement efficiency.
Slug B profile control agents include Complex polymer and additive；Wherein, Complex polymer is by three kinds of different molecular Quality Mgmt Dept
Divide hydrolyzed polyacrylamide composition, molecular mass is respectively 500*104、800*104、1000*104, its mass ratio is 60：25：
15；Additive includes surfactant, chromium acetate, aluminium citrate, sodium metasilicate, sodium gluconate, salicylic acid；Slug B profile controls
In agent, Complex polymer mass ratio is 0.05%-0.1%, and surfactant qualities ratio is 2%-6%, and chromium acetate mass ratio is
0.01%-0.03%, aluminium citrate mass ratio are 0.01%-0.03%, and sodium metasilicate mass ratio is 0.05%-0.15%, Portugal
Grape sodium saccharate mass ratio is 0.05%-0.15%, and salicylic acid mass ratio is 0.01%-0.03%, and remaining components are preparation water.
Preferably, in slug B profile control agents, Complex polymer, surfactant, chromium acetate, aluminium citrate, sodium metasilicate,
Sodium gluconate, salicylic mass ratio are 0.06%-0.09%：3%-5%：0.01%-0.03%：0.01%-0.03%：
0.07%-0.13%：0.07%-0.13%：0.01%-0.03%, remaining components are preparation water.
It is highly preferred that in slug B profile control agents, Complex polymer, surfactant, chromium acetate, aluminium citrate, metasilicic acid
Sodium, sodium gluconate, salicylic mass ratio are 0.07%：4.2%：0.02%：0.02%：0.1%：0.1%：0.02%,
Remaining components are preparation water.
Slug B main function mechanism is to be crosslinked by the low-molecular polypropylene acid amides and chromium aluminium ion of lower quality fraction
Complex polymer is formed, is possessed compared with low-viscosity, poly- drive is carried out after slug A closure；Salicylic acid plays regulation base fluid acidity
Effect, is firstly added in configuration process, it is belonged to ion with preparation underwater gold and is combined, reduces due to preparing salinity in water
Precipitation, flocculation caused by high, equally with certain crosslinked action；Contain appropriate surfactant, surface in slug B
Activating agent uses compounding mode, can improve the phenomenon that wax, colloid, asphalitine are deposited near wellbore zone, and can improve oil reservoir
Hydrophily, reaches the poly- purpose driven and improve recovery ratio, surfactant is eventually adding in slug B process for preparation, to avoid
Degraded in configuration process with salicylism reaction；Sodium metasilicate plays curing agent effect, makes polymer by adding curing agent
There is certain intensity after delayed gelation, increase its seal-off effect, until degraded discharge after breaking gel；Sodium gluconate plays delayed-action activator
Effect, can delay polymer gelation time, it is injected oil reservoir with low viscosity, reduce injection pressure, treat that it reaches preset location
Slow plastic carries out transfer drive afterwards；After slug A is blocked to hypertonic duct type oil reservoir, water drive is difficult to before slug B can be blocked to script
The duct involved carries out transfer drive, realizes double slug synergies, reaches the poly- purpose driven and improve recovery ratio.
A kind of hypertonic duct type oil reservoir chromium aluminium ion compounds the application method of profile control agent, it is characterised in that including following step
Suddenly：
Step 1. combines oil field actual production design data profile control agent injection rate, injection rate and other injection parameters；
Step 2. pair prepares water and carries out sudden and violent oxygen processing, prepares water and uses oilfield sewage or source water, is dissolved preparing in water
Oxygen content
It is reduced to below 3mg/L；
Under the conditions of 15-55 DEG C of step 3. temperature range, in the mixing container, partial hydrolysis polypropylene is added in water to preparing
Acid amides,
At the uniform velocity stir 2-3 hours, additive is added then to preparing in water, at the uniform velocity stir 2-3 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；
Step 5. slug A profile control agent injection rates reach that static 18-24 hours makes the abundant plastic of profile control agent after preset range；
Step 6. injects driven water-replacing 0.2PV, injects slug B profile control agents, then carries out follow-up note and adopts operation.
The specific injection rate of profile control agent is：Slug A profile control agent 0.3PV are injected first into oil reservoir or rock core, wait 18-24 small
When make the abundant plastic of slug A profile control agents, then in oil reservoir or rock core inject driven water-replacing 0.2PV, then in oil reservoir or rock core
Injection slug B profile control agents 0.5-0.7PV then carries out sequent water flooding.
The present invention the advantage is that relative to prior art：
1st, slug A is compounded using three kinds of high molecule mass partially hydrolyzed polyacrylamide (PHPA)s and the crosslinking of chromium aluminium ion, is formed and divided
The Compositional type polymer of sub-line group's form, possesses matrix type cross-linked structure, during with delayed gelation, stable colloid physical property, broken glue
Between the effect such as long, salt tolerance, firm closure can be implemented to the advanced area in reservoir, macropore.
2nd, in slug A, being used as oxygen scavenger by adding sodium sulfite, thiocarbamide can effectively suppress in configuration process and in oil reservoir
The viscosity reduction effect that is produced to profile control agent of oxygen, it is ensured that stability of the profile control agent in oil reservoir.
3rd, after slug A is blocked to hypertonic duct type oil reservoir, water drive is difficult to the duct involved before slug B can be blocked to script
Implement transfer drive, double slug synergies are realized, to improve recovery ratio.
4th, contain appropriate surfactant in slug B, can improve what wax, colloid, asphalitine were deposited near wellbore zone
Phenomenon, and the hydrophily of oil reservoir can be improved, the poly- purpose driven and improve recovery ratio is reached, and compound surfactant action effect is excellent
In single surfactant.
5th, the present invention injects form by double slugs, and the hypertonic duct type Reservoir Heterogeneity of improvement, recovery percent of reserves are low, water suction
Index is low, increases sequent water flooding sweep efficiency, suppresses region of bypassed oil generation, to improve traditional oil production method to hypertonic duct type oil reservoir
The drawbacks such as recovery ratio is low, deficiency in economic performance.
Embodiment
Experimental method used in following embodiments is conventional method unless otherwise specified.
The partially hydrolyzed polyacrylamide (PHPA) used in following embodiments produces for Daqing Refinery company of CNPC, relative point
Protonatomic mass is 500*104、800*104、1000*104、1200*104、1800*104、2400*104, effective mass fraction is 90%；
Chromium acetate produces for Shandong West Asia chemical industry Co., Ltd, analyzes pure；Aluminium citrate is given birth to for Jinan Xin Ya Chemical Co., Ltd.s
Production, top pure grade GR；Sodium sulfite produces for Tianjin Zhi Yuan chemical reagent Co., Ltd, analyzes pure；Resorcinol is Guangdong father-in-law
River chemical reagent Co., Ltd produces, and analyzes pure；Thiocarbamide produces for Shandong Jia Ying Chemical Industry Science Co., Ltd, analyzes pure；Winestone
Sour potassium sodium produces for Dezhou Run Xin laboratory apparatus Co., Ltd, analyzes pure AR；Sodium metasilicate is that Shanghai jump reaches Industrial Co., Ltd.
Production, solids content 57%；Sodium gluconate produces for Shanghai Yi Hui Chemical Co., Ltd.s, content 99%；Salicylic acid is Nanjing
Chemical reagent limited company produces, and analyzes pure；NPE produces for Jiangsu Hai'an Petrochemical Plant,
No. CAS：9016-45-9, purity 98%；Neopelex is the small wild chemical limited company's production in Shandong, analysis
It is pure；Perfluoroalkyl betain produces for Wuhan Sai Woer Chemical Co., Ltd.s, content：>=98%；Coco-nut oil fatty acid diethanol
Acid amides is the small wild chemical limited company's production in Shandong, is analyzed pure；Cocamidopropyl propyl amide hydroxy sulfo lycine is Guangzhou Ke You
Chemical Industry Science Co., Ltd 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, content of oxygen dissolved in water reduction will be prepared
To below 3mg/L；(2) under the conditions of 15 DEG C of temperature, partially hydrolyzed polyacrylamide (PHPA) is added into preparation water and at the uniform velocity stirring 2 is small
When, additive is added in water then to preparing, and at the uniform velocity stir 3 hours, obtain profile control agent；(3) by profile control agent after the completion of preparing
It is directly injected into rock core.
2nd, water is prepared, is 500mg/L by adding NaCl into distilled water and adjusting to salinity, to make in simulated production
Source water.
3rd, concrete medicament application amount is：
Slug A：Complex polymer is made up of the partially hydrolyzed polyacrylamide (PHPA) of three kinds of different molecular quality, molecular mass point
Wei not 1200*104、1800*104、2400*104, its mass ratio is 15：35：50；Complex polymer, chromium acetate, aluminium citrate,
Sodium sulfite, resorcinol, thiocarbamide, sodium potassium tartrate tetrahydrate mass ratio are 0.3%：0.1%：0.1%：0.3%：0.3%：
0.22%：0.2%, remaining components are preparation water.
Slug B：Complex polymer is made up of three kinds of different molecular mass fraction hydrolyzed polyacrylamides, molecular mass difference
For 500*104、800*104、1000*104, its mass ratio is 60：25：15；Complex polymer, NPE, cocounut oil
Amido propyl hydroxy sulfo lycine, chromium acetate, aluminium citrate, sodium metasilicate, sodium gluconate, salicylic mass ratio are
0.07%：2.1%：2.1%：0.02%：0.02%：0.1%：0.1%：0.02%, remaining components are 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 is 2000*10-3μm2, hypertonic duct oil reservoir is simulated by high permeability rock core.
5th, displacement oil is viscosity 44mPa.s in the case of crude oil, 30 DEG C.
6th, sealing characteristics test operating procedure is as follows：
(1) rock core to be used is put into 70 DEG C of insulating boxs and dried to constant weight, weighed its quality after taking out cooling, be designated as
m1；
(2) rock core after drying is put into saturation in vacuum pumping device and prepares water, during the bubble-free generation of observation core surface
Stop pumping, surface water is removed into rock core taking-up wiping, weighed, quality is designated as m2；
(3) rock core that saturation is configured into water is put into core holding unit, plus confined pressure 4MPa, then with 2mL/min speed
Into rock core, injection configuration water, records the pressure and flow when pressure stability；
(4) positive injection slug A profile control agent 0.3PV, pressure during record injection profile agent into rock core, stand 24 hours
It is stand-by；
(5) water drive is carried out with 2mL/min speed, record outlet brings out the first breakthrough pressure when dripping, and treats that pressure is steady
The time recording pressure and flow；
(6) 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 and residual resistance factor.
7th, sealing characteristics evaluates such as following table
Can be drawn in from the above, slug A profile control agents to rock core profile control effect substantially, sealing ratiod up to more than 90%,
Illustrate the Complex polymer system after being combined with simulation source water without negative effect.
8th, oil-displacement capacity test operating procedure is as follows：
(1) rock core to be used is put into 70 DEG C of insulating boxs and dried to constant weight, weighed its quality after taking out cooling, be designated as
m3；
(2) rock core after drying is put into saturation in vacuum pumping device and configures water, during the bubble-free generation of observation core surface
Stop pumping, surface water is removed into rock core taking-up wiping, weighed, quality is designated as m4；
(3) with 1.5mL/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 tired
Count water yield, stand 4 hours it is stand-by；
(4) rock core of the complete crude oil of saturation is 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；
(5) with 0.9mL/min speed forward direction injection slug A profile control agent 0.3PV, placed 18 hours after having noted, then note
Enter to prepare water 0.2PV, be subsequently injected into slug B profile control agent 0.5PV, termination of pumping；
(6) 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 evaluates such as following table：
Learnt from above-mentioned data, profile control agent is prepared using simulation source water, displacement is carried out in the case of 30 DEG C of oil reservoir of simulation
Experiment, implements after profile control to high permeability rock core, has improved rock core anisotropism, improves recovery ratio 24.67%, illustrates the present invention
Profile control agent can improve Reservoir Heterogeneity, and 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, content of oxygen dissolved in water reduction will be prepared
To below 3mg/L；(2) under the conditions of 35 DEG C of temperature, partially hydrolyzed polyacrylamide (PHPA) is added in water and at the uniform velocity stir 2.5 to preparing
Hour, additive is added in water then to preparing, and at the uniform velocity stir 2.5 hours, obtain profile control agent；(3) it will be adjusted after the completion of preparing
Cut open agent and be directly injected into rock core.
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：Complex polymer is made up of the partially hydrolyzed polyacrylamide (PHPA) of three kinds of different molecular quality, molecular mass point
Wei not 1200*104、1800*104、2400*104, its mass ratio is 15：35：50；Complex polymer, chromium acetate, aluminium citrate,
Sodium sulfite, resorcinol, thiocarbamide, sodium potassium tartrate tetrahydrate mass ratio are 0.2%：0.05%：0.05%：0.2%：0.2%：
0.1%：0.15%, remaining components are preparation water.
Slug B：Complex polymer is made up of three kinds of different molecular mass fraction hydrolyzed polyacrylamides, molecular mass difference
For 500*104、800*104、1000*104, its mass ratio is 60：25：15；Complex polymer, neopelex, coconut
Fatty acid oil diglycollic amide, chromium acetate, aluminium citrate, sodium metasilicate, sodium gluconate, salicylic mass ratio are
0.05%：1%：1%：0.01%：0.01%：0.05%：0.05%：0.01%, remaining components are 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 is 2000*10-3μm2, hypertonic duct oil reservoir is simulated by high permeability rock core.
5th, displacement oil is viscosity 44mPa.s in the case of crude oil, 50 DEG C.
6th, sealing characteristics test operating procedure is as follows：
(1) rock core to be used is put into 70 DEG C of insulating boxs and dried to constant weight, weighed its quality after taking out cooling, be designated as
m5；
(2) rock core after drying is put into saturation in vacuum pumping device and prepares water, during the bubble-free generation of observation core surface
Stop pumping, surface water is removed into rock core taking-up wiping, weighed, quality is designated as m6；
(3) rock core that saturation is configured into water is put into core holding unit, plus confined pressure 4MPa, then with 2mL/min speed
Into rock core, injection configuration water, records the pressure and flow when pressure stability；
(4) positive injection slug A profile control agent 0.3PV, pressure during record injection profile agent into rock core, stand 24 hours
It is stand-by；
(5) water drive is carried out with 2mL/min speed, record outlet brings out the first breakthrough pressure when dripping, and treats that pressure is steady
The time recording pressure and flow；
(6) 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 and residual resistance factor.
7th, sealing characteristics evaluates such as following table
Can be drawn in from the above, slug A profile control agents to rock core profile control effect substantially, sealing ratiod up to more than 90%,
Illustrate the Complex polymer system after being combined with simulating oil field produced water without negative effect.
8th, oil-displacement capacity test operating procedure is as follows：
(1) rock core to be used is put into 70 DEG C of insulating boxs and dried to constant weight, weighed its quality after taking out cooling, be designated as
m7；
(2) rock core after drying is put into saturation in vacuum pumping device and configures water, during the bubble-free generation of observation core surface
Stop pumping, surface water is removed into rock core taking-up wiping, weighed, quality is designated as m8；
(3) with 1.5mL/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 tired
Count water yield, stand 4 hours it is stand-by；
(4) rock core of the complete crude oil of saturation is 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；
(5) with 0.9mL/min speed forward direction injection slug A profile control agent 0.3PV, placed 24 hours after having noted, then note
Enter to prepare water 0.2PV, be subsequently injected into slug B profile control agent 0.7PV, termination of pumping；
(6) 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 evaluates such as following table：
Learnt from above-mentioned data, profile control agent is prepared using simulating oil field produced water, driven in the case of 50 DEG C of oil reservoir of simulation
For experiment, high permeability rock core is implemented after profile control, has improved rock core anisotropism, improves recovery ratio 25.38%, illustrates this hair
Bright profile control 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, content of oxygen dissolved in water reduction will be prepared
To below 3mg/L；(2) under the conditions of 55 DEG C of temperature, partially hydrolyzed polyacrylamide (PHPA) is added into preparation water and at the uniform velocity stirring 3 is small
When, additive is added in water then to preparing, and at the uniform velocity stir 2 hours, obtain profile control agent；(3) by profile control agent after the completion of preparing
It is directly injected into rock core.
2nd, water is prepared, by adding solubility salt regulating mineralization degree of injected oil into distilled water, final salinity is 35000mg/
L, the oilfield sewage used to simulate in actual production.
3rd, concrete medicament application amount is：
Slug A：Complex polymer is made up of the partially hydrolyzed polyacrylamide (PHPA) of three kinds of different molecular quality, molecular mass point
Wei not 1200*104、1800*104、2400*104, its mass ratio is 15：35：50；Complex polymer, chromium acetate, aluminium citrate,
Sodium sulfite, resorcinol, thiocarbamide, sodium potassium tartrate tetrahydrate mass ratio are 0.4%：0.15%：0.15%：0.4%：0.4%：
0.3%：0.25%, remaining components are preparation water.
Slug B：Complex polymer is made up of three kinds of different molecular mass fraction hydrolyzed polyacrylamides, molecular mass difference
For 500*104、800*104、1000*104, its mass ratio is 60：25：15；Complex polymer, NPE, perfluor
Alkyl betaine, chromium acetate, aluminium citrate, sodium metasilicate, sodium gluconate, salicylic mass ratio are 0.1%：2.5%：
3.5%：0.03%：0.03%：0.15%：0.15%：0.03%, remaining components are 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 is 2000*10-3μm2, hypertonic duct oil reservoir is simulated by high permeability rock core.
5th, displacement oil is viscosity 37mPa.s in the case of crude oil, 70 DEG C.
6th, sealing characteristics test operating procedure is as follows：
(1) rock core to be used is put into 70 DEG C of insulating boxs and dried to constant weight, weighed its quality after taking out cooling, be designated as
m9；
(2) rock core after drying is put into saturation in vacuum pumping device and prepares water, during the bubble-free generation of observation core surface
Stop pumping, surface water is removed into rock core taking-up wiping, weighed, quality is designated as m10；
(3) rock core that saturation is configured into water is put into core holding unit, plus confined pressure 4MPa, then with 2mL/min speed
Into rock core, injection configuration water, records the pressure and flow when pressure stability；
(4) positive injection slug A profile control agent 0.3PV, pressure during record injection profile agent into rock core, stand 24 hours
It is stand-by；
(5) water drive is carried out with 2mL/min speed, record outlet brings out the first breakthrough pressure when dripping, and treats that pressure is steady
The time recording pressure and flow；
(6) 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 and residual resistance factor.
7th, sealing characteristics evaluates such as following table
Can be drawn in from the above, slug A profile control agents to rock core profile control effect substantially, sealing ratiod up to more than 90%,
Illustrate the Complex polymer system after being combined with simulating oil field produced water without negative effect.
8th, oil-displacement capacity test operating procedure is as follows：
(1) rock core to be used is put into 70 DEG C of insulating boxs and dried to constant weight, weighed its quality after taking out cooling, be designated as
m11；
(2) rock core after drying is put into saturation in vacuum pumping device and configures water, during the bubble-free generation of observation core surface
Stop pumping, surface water is removed into rock core taking-up wiping, weighed, quality is designated as m12；
(3) with 1.5mL/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 tired
Count water yield, stand 4 hours it is stand-by；
(4) rock core of the complete crude oil of saturation is 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；
(5) with 0.9mL/min speed forward direction injection slug A profile control agent 0.3PV, placed 22 hours after having noted, then note
Enter to prepare water 0.2PV, be subsequently injected into slug B profile control agent 0.6PV, termination of pumping；
(6) 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 evaluates such as following table：
Learnt from above-mentioned data, profile control agent is prepared using simulating oil field produced water, driven in the case of 70 DEG C of oil reservoir of simulation
For experiment, high permeability rock core is implemented after profile control, has improved rock core anisotropism, improves recovery ratio 26.77%, illustrates this hair
Bright profile control agent can improve Reservoir Heterogeneity, and profile control effect is obvious.
Claims (7)
1. a kind of hypertonic duct type oil reservoir chromium aluminium ion compounding profile control agent, it is characterised in that including slug A profile control agents and slug B
Profile control agent；
Slug A profile control agents include Complex polymer and additive；Wherein, Complex polymer is by the part of three kinds of different molecular quality
Hydrolyzed polyacrylamide is constituted, and molecular mass is respectively 1200*104、1800*104、2400*104, its mass ratio is 15：35：
50；Additive includes chromium acetate, aluminium citrate, sodium sulfite, resorcinol, thiocarbamide, sodium potassium tartrate tetrahydrate；In slug A profile control agents,
Complex polymer mass ratio is 0.2%-0.4%, and chromium acetate mass ratio is 0.05%-0.15%, and aluminium citrate mass ratio is
0.05%-0.15%, sodium sulfite mass ratio is 0.2%-0.4%, and resorcinol mass ratio is 0.2%-0.4%, thiocarbamide matter
Amount is than being 0.1%-0.3%, and sodium potassium tartrate tetrahydrate mass ratio is 0.15%-0.25%, and remaining components are to prepare water；And
Slug B profile control agents include Complex polymer and additive；Wherein, Complex polymer is by three kinds of different molecular mass fraction water
Polyacrylamide composition is solved, molecular mass is respectively 500*104、800*104、1000*104, its mass ratio is 60：25：15；Add
Plus agent includes surfactant, chromium acetate, aluminium citrate, sodium metasilicate, sodium gluconate, salicylic acid；In slug B profile control agents,
Complex polymer mass ratio is 0.05%-0.1%, and surfactant qualities ratio is 2%-6%, and chromium acetate mass ratio is
0.01%-0.03%, aluminium citrate mass ratio are 0.01%-0.03%, and sodium metasilicate mass ratio is 0.05%-0.15%, Portugal
Grape sodium saccharate mass ratio is 0.05%-0.15%, and salicylic acid mass ratio is 0.01%-0.03%, and remaining components are preparation water.
2. a kind of hypertonic duct type oil reservoir chromium aluminium ion compounding profile control agent as claimed in claim 1, it is characterised in that the table
Face activating agent includes NPE, cocamidopropyl propyl amide hydroxy sulfo lycine, neopelex, coconut oil
Fatty diglycollic amide, perfluoroalkyl betain or other be applied to hypertonic duct type oil reservoir surfactant.
3. a kind of hypertonic duct type oil reservoir chromium aluminium ion compounding profile control agent as claimed in claim 1, it is characterised in that described section
Fill in Complex polymer, chromium acetate, aluminium citrate, sodium sulfite, resorcinol, thiocarbamide, sodium potassium tartrate tetrahydrate mass ratio in A profile control agents
For 0.25%-0.35%：0.07%-0.13%：0.07%-0.13%：0.25%-0.35%：0.25%-0.35%：
0.15%-0.25%：0.17%-0.23%, remaining components are preparation water.
4. a kind of hypertonic duct type oil reservoir chromium aluminium ion compounding profile control agent as claimed in claim 1, it is characterised in that described section
Fill in Complex polymer, chromium acetate, aluminium citrate, sodium sulfite, resorcinol, thiocarbamide, sodium potassium tartrate tetrahydrate mass ratio in A profile control agents
For 0.3%：0.1%：0.1%：0.3%：0.3%：0.22%：0.2%, remaining components are preparation water.
5. a kind of hypertonic duct type oil reservoir chromium aluminium ion compounding profile control agent as claimed in claim 1, it is characterised in that described section
Fill in Complex polymer in B profile control agents, it is surfactant, chromium acetate, aluminium citrate, sodium metasilicate, sodium gluconate, salicylic
Mass ratio is 0.06%-0.09%：3%-5%：0.01%-0.03%：0.01%-0.03%：0.07%-0.13%：
0.07%-0.13%：0.01%-0.03%, remaining components are preparation water.
6. a kind of hypertonic duct type oil reservoir chromium aluminium ion compounding profile control agent as claimed in claim 1, it is characterised in that described section
Fill in Complex polymer in B profile control agents, it is surfactant, chromium acetate, aluminium citrate, sodium metasilicate, sodium gluconate, salicylic
Mass ratio is 0.07%：4.2%：0.02%：0.02%：0.1%：0.1%：0.02%, remaining components are preparation water.
7. a kind of hypertonic duct type oil reservoir chromium aluminium ion compounds the application method of profile control agent, 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. pair prepares water and carries out sudden and violent oxygen processing, 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, partial hydrolysis polyacrylamide is added in water to preparing
Amine, is at the uniform velocity stirred 2-3 hours, and additive is added then to preparing in water, is at the uniform velocity stirred 2-3 hours, is obtained 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；
Step 5. slug A profile control agent injection rates reach that static 18-24 hours makes the abundant plastic of profile control agent after preset range；
Step 6. injects driven water-replacing 0.2PV, injects slug B profile control agents, then carries out follow-up note and adopts operation.
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| CN108533238A (en) * | 2018-04-18 | 2018-09-14 | 中国石油天然气股份有限公司 | Method for plugging dominant seepage channel after polymer flooding |
| CN108865089A (en) * | 2018-08-10 | 2018-11-23 | 宁夏朔光石油科技有限公司 | Water blockoff system and its construction method |
| CN109439306A (en) * | 2018-12-24 | 2019-03-08 | 陕西明德石油科技有限公司 | Extra permeability oilfield selectivity Application of weak gel profile agent |
| CN114634805A (en) * | 2022-04-08 | 2022-06-17 | 中国石油大学(华东) | Self-growing gel dispersion active mobility control system and cross-flow control method for hypotonic-compact reservoir |
| CN116104460A (en) * | 2023-03-02 | 2023-05-12 | 东北石油大学 | Combined profile control technology dosage design method |
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2017
- 2017-08-06 CN CN201710654125.XA patent/CN107254301A/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533238A (en) * | 2018-04-18 | 2018-09-14 | 中国石油天然气股份有限公司 | Method for plugging dominant seepage channel after polymer flooding |
| CN108865089A (en) * | 2018-08-10 | 2018-11-23 | 宁夏朔光石油科技有限公司 | Water blockoff system and its construction method |
| CN108865089B (en) * | 2018-08-10 | 2019-06-25 | 宁夏朔光石油科技有限公司 | Water blockoff system and its construction method |
| CN109439306A (en) * | 2018-12-24 | 2019-03-08 | 陕西明德石油科技有限公司 | Extra permeability oilfield selectivity Application of weak gel profile agent |
| CN114634805A (en) * | 2022-04-08 | 2022-06-17 | 中国石油大学(华东) | Self-growing gel dispersion active mobility control system and cross-flow control method for hypotonic-compact reservoir |
| CN114634805B (en) * | 2022-04-08 | 2023-05-16 | 中国石油大学(华东) | Self-growing gel dispersion active fluidity control system and channeling control method for hypotonic-tight reservoirs |
| CN116104460A (en) * | 2023-03-02 | 2023-05-12 | 东北石油大学 | Combined profile control technology dosage design method |
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