CN107365578A - A kind of double slug type profile control agents of poly- table of positive rhythm reservoir and its application method - Google Patents
A kind of double slug type profile control agents of poly- table of positive rhythm reservoir and its application method Download PDFInfo
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- 230000033764 rhythmic process Effects 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 94
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 81
- 229920000642 polymer Polymers 0.000 claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 5
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 claims description 28
- 238000002347 injection Methods 0.000 claims description 24
- 239000007924 injection Substances 0.000 claims description 24
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 24
- 238000002360 preparation method Methods 0.000 claims description 23
- 235000013162 Cocos nucifera Nutrition 0.000 claims description 17
- 244000060011 Cocos nucifera Species 0.000 claims description 17
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 15
- DDXLVDQZPFLQMZ-UHFFFAOYSA-M dodecyl(trimethyl)azanium;chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(C)C DDXLVDQZPFLQMZ-UHFFFAOYSA-M 0.000 claims description 15
- 239000000194 fatty acid Substances 0.000 claims description 15
- 229930195729 fatty acid Natural products 0.000 claims description 15
- 150000004665 fatty acids Chemical class 0.000 claims description 15
- 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 14
- 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 14
- 229940074446 sodium potassium tartrate tetrahydrate Drugs 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 13
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-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
- 235000010265 sodium sulphite Nutrition 0.000 claims description 12
- MRUAUOIMASANKQ-UHFFFAOYSA-N cocamidopropyl betaine Chemical compound CCCCCCCCCCCC(=O)NCCC[N+](C)(C)CC([O-])=O MRUAUOIMASANKQ-UHFFFAOYSA-N 0.000 claims description 10
- 239000003814 drug Substances 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 5
- 239000000654 additive Substances 0.000 claims description 4
- 230000000996 additive effect Effects 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 4
- 239000010865 sewage Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 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
- 238000011084 recovery Methods 0.000 abstract description 19
- 239000004094 surface-active agent Substances 0.000 abstract description 11
- 150000001875 compounds Chemical class 0.000 abstract description 6
- QQHSIRTYSFLSRM-UHFFFAOYSA-N alumanylidynechromium Chemical compound [Al].[Cr] QQHSIRTYSFLSRM-UHFFFAOYSA-N 0.000 abstract description 4
- 238000013329 compounding Methods 0.000 abstract description 4
- 239000003431 cross linking reagent Substances 0.000 abstract description 4
- 230000007812 deficiency Effects 0.000 abstract description 3
- 239000011159 matrix material Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 239000011435 rock Substances 0.000 description 57
- 239000003921 oil Substances 0.000 description 56
- 238000002474 experimental method Methods 0.000 description 21
- 230000035699 permeability Effects 0.000 description 18
- 238000005086 pumping Methods 0.000 description 18
- 230000000694 effects Effects 0.000 description 13
- 238000006073 displacement reaction Methods 0.000 description 12
- 238000007789 sealing Methods 0.000 description 10
- 239000010779 crude oil Substances 0.000 description 9
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- 238000011156 evaluation 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
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 239000006004 Quartz sand Substances 0.000 description 3
- 239000012153 distilled water Substances 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- -1 oleoyl amine Chemical class 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 description 3
- 235000011152 sodium sulphate Nutrition 0.000 description 3
- 229940123973 Oxygen scavenger Drugs 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 230000002079 cooperative effect Effects 0.000 description 2
- 230000015784 hyperosmotic salinity response Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000002736 nonionic surfactant Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000002888 zwitterionic surfactant Substances 0.000 description 2
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 235000016068 Berberis vulgaris Nutrition 0.000 description 1
- 241000335053 Beta vulgaris Species 0.000 description 1
- 244000131522 Citrus pyriformis Species 0.000 description 1
- 241000237858 Gastropoda Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 125000002252 acyl group Chemical group 0.000 description 1
- 239000003513 alkali 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
- 239000002585 base Substances 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
- 239000003093 cationic surfactant Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- PCHPORCSPXIHLZ-UHFFFAOYSA-N diphenhydramine hydrochloride Chemical compound [Cl-].C=1C=CC=CC=1C(OCC[NH+](C)C)C1=CC=CC=C1 PCHPORCSPXIHLZ-UHFFFAOYSA-N 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- KWIUHFFTVRNATP-UHFFFAOYSA-N glycine betaine Chemical compound C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- QLNJFJADRCOGBJ-UHFFFAOYSA-N propionamide Chemical compound CCC(N)=O QLNJFJADRCOGBJ-UHFFFAOYSA-N 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000010148 water-pollination Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/44—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing organic binders only
-
- 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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
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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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/588—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
-
- 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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- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Geochemistry & Mineralogy (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
A kind of double slug type profile control agents of poly- table of positive rhythm reservoir and its application method, are related to field use chemical field.The present invention is injected in positive rhythm reservoir by double slug forms, preposed attributives mixing different molecular mass fraction hydrolyzed polyacrylamide and chromium aluminium ion crosslinking agent, compounding forms the polymer with matrix type cross-linked structure, can implement firm closure to the hypertonic band in oil reservoir bottom；Rearmounted slug is compound surfactant, injects oil reservoir after preposed attributives effectively block, and surfactant flooding is carried out to the hypotonic band in high-order bit, to reduce residual oil content in oil reservoir, increase oil reservoir injectivity index；Improve Reservoir Heterogeneity by way of double slug combinations, increase sequent water flooding sweep efficiency, suppress positive rhythm reservoir region of bypassed oil and formed, to improve the drawbacks such as traditional oil production method, deficiency in economic performance low to positive rhythm oil recovery.
Description
Technical field
The present invention relates to a kind of double slug type profile control agents of the poly- table of positive rhythm reservoir and its application method, the profile control agent to improve
Reservoir adaptability, and then positive rhythm type oil reservoir oil recovery can be improved, belong to field use chemical agent field.
Background technology
Reservoir heterogeneity refers to the inhomogeneity inside reservoir, is mainly shown as the side such as reservoir lithology, physical property, oiliness
The anisotropy in face, it is the main reason for influenceing remaining oil distribution；Changed according to the microcosmic Petrographic Features on reservoir longitudinal direction
Rule, it is divided into positive rhythm, the anti-rhythm and compound rhythm reservoir；Positive rhythm reservoir is the common trait of various fluvial deposit sand bodies,
From sandstone bottom to top granularity from the coarse to fine, permeability is by high step-down；Due to the difference of river deposition, many positive rhythms
Very greatly, so as to cause the difference of oil saturation, the oil gas through studying positive rhythm reservoir produces for the permeability grade change of layer of sand
The more anti-rhythm of degree or compound rhythm oil reservoir are all poor, are a kind of highly undesirable oil reservoirs.
For a large amount of actual recoverys percent of reserves of positive rhythm reservoir 7.8%~10.8%, recovery percent of reserves is relatively low, shows that water drive is applied to
Positive rhythm reservoir is less efficient；Positive rhythm reservoir longitudinal permeability has the characteristics of upper low high, and the hypertonic band in oil reservoir lower curtate position is through water
The multiple displacement of body, washing degree is high, contributes band for main profit, the hypotonic band water energy in high-order bit is weak, and water drive degree is low, causes
Oil displacement efficiency is low.
Recovery efficiency technique demand is improved for positive rhythm reservoir, the present invention designs a kind of double slug type profile control agents of poly- table, gram
Taken 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 type profile control agents of the poly- table of positive rhythm reservoir and its application method, it is special
Sign is, in double slug form injection positive rhythm reservoirs, preposed attributives mixing different molecular mass fraction hydrolyzed polyacrylamide
With chromium aluminium ion crosslinking agent, compounding forms the polymer with matrix type cross-linked structure, the hypertonic band in oil reservoir bottom can be implemented steady
Sealing is blocked up；Rearmounted slug is compound surfactant, injects oil reservoir after preposed attributives effectively block, hypotonic to high-order bit to bring into
Row surfactant flooding, to reduce residual oil content in oil reservoir, increase oil reservoir injectivity index；Changed by way of double slug combinations
Kind Reservoir Heterogeneity, increases sequent water flooding sweep efficiency, suppresses positive rhythm reservoir region of bypassed oil and is formed, to improve traditional oil recovery side
The drawbacks such as method is low to positive rhythm oil recovery, deficiency in economic performance.
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 type profile control agents of the poly- table of positive rhythm reservoir and its application method, it is led
The composition is wanted to be：Partially hydrolyzed polyacrylamide (PHPA) relative molecular weight is respectively 800*104、1200*104、2000*104, chromium acetate, lemon
Lemon acid aluminium, sodium sulfite, resorcinol, triethanolamine, sodium potassium tartrate tetrahydrate, cocoanut fatty acid diethanolamide, dodecyl
Trimethyl ammonium chloride, Cocoamidopropyl betaine；For positive rhythm reservoir, double slug formula profile control agents are designed, below with slug A
Profile control agent and slug B are 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) forms, and molecular mass is respectively 800*104、1200*104、2000*104, its mass ratio is 25：
35：40；Additive includes chromium acetate, aluminium citrate, sodium sulfite, resorcinol, triethanolamine, sodium potassium tartrate tetrahydrate；Slug A is adjusted
Cut open in agent, Complex polymer mass ratio is 0.2%-0.35%, and chromium acetate mass ratio is 0.1%-0.2%, aluminium citrate quality
Than for 0.1%-0.2%, sodium sulfite mass ratio is 0.2%-0.4%, and resorcinol mass ratio is 0.2%-0.4%, three second
Hydramine mass ratio is 0.05%-0.15%, and sodium potassium tartrate tetrahydrate mass ratio is 0.05%-0.15%, and remaining components are preparation water.
Preferably, in slug A profile control agents, Complex polymer, chromium acetate, aluminium citrate, sodium sulfite, resorcinol, three
Monoethanolamine, sodium potassium tartrate tetrahydrate mass ratio are 0.25%-0.3%：0.12%-0.18%：0.12%-0.18%：0.25%-
0.35%：0.25%-0.35%：0.07%-0.13%：0.07%-0.13%, 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,
Triethanolamine, sodium potassium tartrate tetrahydrate mass ratio are 0.28%：0.15%：0.15%：0.3%：0.3%：0.1%：0.1%, it is remaining
Component is preparation water.
Slug A profile control agent main function mechanism is to pass through three kinds of different molecular mass fraction hydrolyzed polyacrylamides and chromium
Aluminium ion is crosslinked compounding, forms the Compositional type polymer with molecular coil form, has colloid physical property stabilization, broken glue time
Length, salt tolerance etc. act on, and can implement firm closure to the hypertonic band in positive rhythm reservoir bottom；Resorcinol and triethanolamine are as auxiliary
Assistant crosslinking agent uses, and strengthens profile control agent stability, and increase broken glue time；Sodium potassium tartrate tetrahydrate uses as dispersant, can make
Complex polymer system is intermolecular to be more uniformly spread, increase molecular coil periphery absorption affinity, so as to improve profile control agent in positive rhythm
Restrain the plugging effect of bottom macropore in oil reservoir；Sodium sulfite can effectively suppress in process for preparation and in oil reservoir as oxygen scavenger
Oxygen increases the stability of profile control agent to viscosity reduction effect caused by profile control agent；It is big that slug A is mainly used as closure positive rhythm reservoir bottom
Duct, improve the anisotropism of positive rhythm reservoir so that being subsequently implanted into the slug B of low viscosity can be efficiently entering in positive rhythm reservoir
Portion and top, so as to form double slug synergies.
Slug B includes cocoanut fatty acid diethanolamide, DTAC, cocamidopropyl propyl amide beet
Alkali；In slug B, cocoanut fatty acid diethanolamide mass ratio is 1%-2%, and DTAC mass ratio is
2%-4%, Cocoamidopropyl betaine mass ratio are 1%-2%, and remaining components are preparation water.
Preferably, in slug B, cocoanut fatty acid diethanolamide, DTAC, coconut oleoyl amine third
Base glycine betaine mass ratio is 1.2%-1.8%：2.5%-3.5%：1.2%-1.8%, remaining components are preparation water.
It is highly preferred that in slug B, cocoanut fatty acid diethanolamide, DTAC, coconut oleoyl amine
CAB mass ratio is 1.5%：3%：1.5%, remaining components are preparation water.
Slug B main function mechanism is, by mixing nonionic surfactant cocoanut fatty acid diethanolamide, sun
Ionic surface active agent DTAC and zwitterionic surfactant Cocoamidopropyl betaine, are played
Surfactant cooperative effect；Compound surfactant solution has relatively low surface and interface tension force, and stronger wetting
Ability, can improve rock hydrophily, reach washing oil purpose indirectly, and to reduce residual oil content in oil reservoir, increase oil reservoir water suction refers to
Number；Three kinds of surfactant compounds, can increase its saline-alkaline tolerance, can adapt to different types of stratum water；And three kinds of tables
Face activating agent composite usage effect is better than single surfactant；After slug A forms effectively closure, slug B is injected into oil reservoir,
The hypotonic band in high-order bit can be entered and carry out surfactant flooding, blocked with reducing the hypotonic band residual oil in high-order bit to caused by oil reservoir,
Strengthen its flow conductivity, and oil reservoir is further developed by sequent water flooding.
The application method of the double slug type profile control agents of a kind of poly- table of positive rhythm 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
It 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
Hour, 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 24-48 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 0.15PV, 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 0.2-0.4PV are injected first into oil reservoir or rock core, wait 24-
Make within 48 hours the abundant plastic of slug A profile control agents, then to injection driven water-replacing 0.15PV, slug B0.2- in oil reservoir or rock core
0.3PV, then carry out follow-up note and adopt operation.
The present invention the advantage is that relative to prior art：
1st, recovery efficiency technique demand is improved for positive rhythm reservoir, the present invention designs a kind of chromium aluminium ion crosslinking compounding polymerization
Thing type profile control agent, it is characterised in that Complex polymer type profile control agent slug A, pass through three kinds of high molecule mass partial hydrolysis poly- third
Acrylamide is compounded, and forms the Compositional type polymer with molecular coil form, can be to bottom macropore in positive rhythm reservoir
Implement firm closure.
2nd, in slug A, by adding chromium acetate, aluminium citrate is used as crosslinking agent, can form matrix type cross-linked structure, have
The effects such as stable, the broken glue time length of colloid physical property, salt tolerance.
3rd, in slug A, sodium sulfite can effectively suppress in process for preparation with the oxygen in oil reservoir to profile control agent as oxygen scavenger
Caused viscosity reduction effect, strengthen the stability of profile control agent.
4th, in slug B, nonionic surfactant cocoanut fatty acid diethanolamide, cationic surfactant are passed through
DTAC and zwitterionic surfactant Cocoamidopropyl betaine compound synergic, play surface work
Property agent cooperative effect, its application effect are better than single surfactant.
5th, the present invention injects form by double slugs, and improvement positive rhythm reservoir anisotropism, recovery percent of reserves are low, injectivity index
Low and water injection pressure is big, increases sequent water flooding sweep efficiency, suppresses region of bypassed oil generation, to improve traditional oil production method to positive rhythm
The drawbacks such as oil recovery 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 800*104、1200*104、2000*104, effective mass fraction is 90%；Chromium acetate is Shandong West Asia chemical industry
Co., Ltd produces, and analysis is pure；Aluminium citrate produces for Jinan Xin Ya Chemical Co., Ltd.s, top pure grade GR；Sodium sulfite is day
Zhi Yuan chemical reagent Co., Ltd of Jinshi City produces, and analysis is pure；Resorcinol produces for Guangdong Weng Jiang chemical reagent Co., Ltd, point
Analyse pure；Triethanolamine produces for Nanjing chemical reagent limited company, analyzes pure AR；Sodium potassium tartrate tetrahydrate is that sunrise experiment is moistened in Dezhou
Instrument Ltd. produces, and analyzes pure AR；Cocoanut fatty acid diethanolamide is the chemical limited company's life in the small open country in Shandong
Production, analysis are pure；DTAC produces for Nanjing chemical reagent limited company, purity 98%；Cocounut oil acyl
Amine CAB produces for Guangzhou Ying Hong Chemical Co., Ltd.s, technical grade.
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, to simulate actual production
The middle source water used.
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 800*104、1200*104、2000*104, its mass ratio is 25：35：40, Complex polymer, chromium acetate, aluminium citrate, Asia
Sodium sulphate, resorcinol, triethanolamine, sodium potassium tartrate tetrahydrate mass ratio are 0.28%：0.15%：0.15%：0.3%：0.3%：
0.1%：0.1%, remaining components are preparation water.
Slug B：Cocoanut fatty acid diethanolamide, DTAC, Cocoamidopropyl betaine
Mass ratio is 1.5%：3%：1.5%, remaining components are preparation water.
4th, specific rock core manufacture scale is as follows：
Experiment rock core is quartz sand epoxy resin cementitious three layers of heterogeneous artificial cores, and specific size is 4.5cm*
4.5cm*30cm, perm-plug method are respectively 500*10-3μm2、1000*10-3μm2、2000*10-3μm2, pass through heterogeneous core
Positive rhythm reservoir is simulated.
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 70 DEG C of insulating boxs and is 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, 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；
(3) rock core that saturation is configured to water is put into core holding unit, and high permeability formation adds confined pressure 4MPa in bottom during placement,
Then configuration water is injected into rock core with 2mL/min speed, the pressure and flow are recorded when pressure stability；
(4) the positive injection slug A profile control agent 0.3PV into rock core, pressure when recording injection profile agent, stand 24 hours and treat
With；
(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.
7th, sealing characteristics evaluation such as following table
Permeability is three layers of non-average rock core overall permeability before stifled, from the above in can draw, slug A profile control agents pair
Three layers of non-hypertonic band in average rock core bottom have formed firm closure, in ooze, hypotonic band still has mobility, illustrate the profile control agent with
It is obvious to simulate source water combination profile control effect, and seepage channel is left to be subsequently implanted into slug B.
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 is 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, 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；
(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, high permeability formation is in bottom during placement, and whole process experiment is at 30 DEG C
Carried out in the case of constant temperature, water drive oil carried out with 2mL/min speed, 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 the positive injection slug A profile control agent 0.2PV of 0.9mL/min speed, pressure when recording injection profile agent is quiet
Put 24 hours it is stand-by, be subsequently injected into and prepare water 0.15PV, be subsequently injected into slug B0.25PV；
(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 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 three layers of heterogeneous core, rock core anisotropism is improved, has improved recovery ratio 25.92%, illustrate this hair
Bright 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, 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：Complex polymer is made up of the partially hydrolyzed polyacrylamide (PHPA) of three kinds of different molecular quality, molecular mass point
Wei not 800*104、1200*104、2000*104, its mass ratio is 25：35：40, Complex polymer, chromium acetate, aluminium citrate, Asia
Sodium sulphate, resorcinol, triethanolamine, sodium potassium tartrate tetrahydrate mass ratio are 0.2%：0.1%：0.1%：0.2%：0.2%：
0.05%：0.05%, remaining components are preparation water.
Slug B：Cocoanut fatty acid diethanolamide, DTAC, Cocoamidopropyl betaine
Mass ratio is 1%：2%：1%, remaining components are preparation water.
4th, specific rock core manufacture scale is as follows：
Experiment rock core is quartz sand epoxy resin cementitious three layers of heterogeneous artificial cores, and specific size is 4.5cm*
4.5cm*30cm, perm-plug method are respectively 500*10-3μm2、1000*10-3μm2、2000*10-3μm2, pass through heterogeneous core
Positive rhythm reservoir is simulated.
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 70 DEG C of insulating boxs and is 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, 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；
(3) rock core that saturation is configured to water is put into core holding unit, and high permeability formation adds confined pressure 4MPa in bottom during placement,
Then configuration water is injected into rock core with 2mL/min speed, the pressure and flow are recorded when pressure stability；
(4) the positive injection slug A profile control agent 0.4PV into rock core, pressure when recording injection profile agent, stand 48 hours and treat
With；
(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.
7th, sealing characteristics evaluation such as following table
Permeability is three layers of non-average rock core overall permeability before stifled, from the above in can draw, slug A profile control agents pair
Three layers of non-hypertonic band in average rock core bottom have formed firm closure, in ooze, hypotonic band still has mobility, illustrate the profile control agent with
Simulating oil field produced water combination profile control effect is obvious, and leaves seepage channel to be subsequently implanted into slug B.
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 is 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, 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；
(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, high permeability formation is in bottom during placement, and whole process experiment is at 50 DEG C
Carried out in the case of constant temperature, water drive oil carried out with 2mL/min speed, 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 the positive injection slug A profile control agent 0.4PV of 0.9mL/min speed, pressure during Complex polymer is recorded,
Stand 36 hours it is stand-by, be subsequently injected into and prepare water 0.15PV, be subsequently injected into slug B0.2PV；
(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 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 three layers of heterogeneous core, rock core anisotropism is improved, has improved recovery ratio 25.66%, illustrated this
Invention 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, 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：Complex polymer is made up of the partially hydrolyzed polyacrylamide (PHPA) of three kinds of different molecular quality, molecular mass point
Wei not 800*104、1200*104、2000*104, its mass ratio is 25：35：40, Complex polymer, chromium acetate, aluminium citrate, Asia
Sodium sulphate, resorcinol, triethanolamine, sodium potassium tartrate tetrahydrate mass ratio are 0.35%：0.2%：0.2%：0.4%：0.4%：
0.15%：0.15%, remaining components are preparation water.
Slug B：Cocoanut fatty acid diethanolamide, DTAC, Cocoamidopropyl betaine
Mass ratio is 2%：4%：2%, remaining components are preparation water.
4th, specific rock core manufacture scale is as follows：
Experiment rock core is quartz sand epoxy resin cementitious three layers of heterogeneous artificial cores, and specific size is 4.5cm*
4.5cm*30cm, perm-plug method are respectively 500*10-3μm2、1000*10-3μm2、2000*10-3μm2, pass through heterogeneous core
Positive rhythm reservoir is simulated.
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 70 DEG C of insulating boxs and is 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, 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；
(3) rock core that saturation is configured to water is put into core holding unit, and high permeability formation adds confined pressure 4MPa in bottom during placement,
Then configuration water is injected into rock core with 2mL/min speed, the pressure and flow are recorded when pressure stability；
(4) the positive injection slug A profile control agent 0.2PV into rock core, pressure when recording injection profile agent, stand 36 hours and treat
With；
(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.
7th, sealing characteristics evaluation such as following table
Permeability is three layers of non-average rock core overall permeability before stifled, from the above in can draw, slug A profile control agents pair
Three layers of non-hypertonic band in average rock core bottom have formed firm closure, in ooze, hypotonic band still has mobility, illustrate the profile control agent with
Simulating oil field produced water combination profile control effect is obvious, and leaves seepage channel to be subsequently implanted into slug B.
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 is 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, 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；
(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, high permeability formation is in bottom during placement, and whole process experiment is at 70 DEG C
Carried out in the case of constant temperature, water drive oil carried out with 2mL/min speed, 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 the positive injection slug A profile control agent 0.4PV of 0.9mL/min speed, pressure during Complex polymer is recorded,
Stand 36 hours it is stand-by, be subsequently injected into and prepare water 0.15PV, be subsequently injected into slug B0.3PV；
(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 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 three layers of heterogeneous core, rock core anisotropism is improved, has improved recovery ratio 26.63%, illustrated this
Invention profile control agent can improve Reservoir Heterogeneity, and profile control effect is obvious.
Claims (6)
1. the double slug type profile control agents of a kind of poly- table of positive rhythm reservoir, it is characterised in that including slug A profile control agents and slug B；
Slug A profile control agents include Complex polymer and additive；Wherein, Complex polymer by three kinds of different molecular quality part
Hydrolyzed polyacrylamide forms, and molecular mass is respectively 800*104、1200*104、2000*104, its mass ratio is 25：35：40；
Additive includes chromium acetate, aluminium citrate, sodium sulfite, resorcinol, triethanolamine, sodium potassium tartrate tetrahydrate；Slug A profile control agents
In, Complex polymer mass ratio is 0.2%-0.35%, and chromium acetate mass ratio is 0.1%-0.2%, and aluminium citrate mass ratio is
0.1%-0.2%, sodium sulfite mass ratio are 0.2%-0.4%, and resorcinol mass ratio is 0.2%-0.4%, triethanolamine
Mass ratio is 0.05%-0.15%, and sodium potassium tartrate tetrahydrate mass ratio is 0.05%-0.15%, and remaining components are preparation water；And
Slug B includes cocoanut fatty acid diethanolamide, DTAC, Cocoamidopropyl betaine；
In slug B, cocoanut fatty acid diethanolamide mass ratio is 1%-2%, and DTAC mass ratio is
2%-4%, Cocoamidopropyl betaine mass ratio are 1%-2%, and remaining components are preparation water.
A kind of 2. double slug type profile control agents of poly- table of positive rhythm reservoir as claimed in claim 1, it is characterised in that the slug A
Complex polymer, chromium acetate, aluminium citrate, sodium sulfite, resorcinol, triethanolamine, sodium potassium tartrate tetrahydrate quality in profile control agent
Than for 0.25%-0.3%：0.12%-0.18%：0.12%-0.18%：0.25%-0.35%：0.25%-0.35%：
0.07%-0.13%：0.07%-0.13%, remaining components are preparation water.
A kind of 3. double slug type profile control agents of poly- table of positive rhythm reservoir as claimed in claim 1, it is characterised in that the slug A
Complex polymer, chromium acetate, aluminium citrate, sodium sulfite, resorcinol, triethanolamine, sodium potassium tartrate tetrahydrate quality in profile control agent
Than for 0.28%：0.15%：0.15%：0.3%：0.3%：0.1%：0.1%, remaining components are preparation water.
A kind of 4. double slug type profile control agents of poly- table of positive rhythm reservoir as claimed in claim 1, it is characterised in that the slug B
Middle cocoanut fatty acid diethanolamide, DTAC, Cocoamidopropyl betaine mass ratio are
1.2%-1.8%：2.5%-3.5%：1.2%-1.8%, remaining components are preparation water.
A kind of 5. double slug type profile control agents of poly- table of positive rhythm reservoir as claimed in claim 1, it is characterised in that the slug B
Middle cocoanut fatty acid diethanolamide, DTAC, Cocoamidopropyl betaine mass ratio are
1.5%：3%：1.5%, remaining components are preparation water.
6. the application method of the double slug type profile control agents of a kind of poly- table of positive rhythm 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 24-48 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 0.15PV, injects slug B, then carries out follow-up note and adopts operation.
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|---|---|---|---|---|
| CN109852362A (en) * | 2018-12-28 | 2019-06-07 | 中国海洋石油集团有限公司 | The double slug profile control agents and its method for implanting that heterogeneous reservoir predominant pathway controls after a kind of poly- drive |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109852362A (en) * | 2018-12-28 | 2019-06-07 | 中国海洋石油集团有限公司 | The double slug profile control agents and its method for implanting that heterogeneous reservoir predominant pathway controls after a kind of poly- drive |
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Application publication date: 20171121 |