CN114907824B - Phase permeation regulator, preparation method and application thereof - Google Patents
Phase permeation regulator, preparation method and application thereof Download PDFInfo
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- CN114907824B CN114907824B CN202110176501.5A CN202110176501A CN114907824B CN 114907824 B CN114907824 B CN 114907824B CN 202110176501 A CN202110176501 A CN 202110176501A CN 114907824 B CN114907824 B CN 114907824B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 229920005989 resin Polymers 0.000 claims abstract description 41
- 239000011347 resin Substances 0.000 claims abstract description 41
- 239000003208 petroleum Substances 0.000 claims abstract description 34
- 229920006317 cationic polymer Polymers 0.000 claims abstract description 23
- 230000035699 permeability Effects 0.000 claims abstract description 19
- 239000004094 surface-active agent Substances 0.000 claims abstract description 19
- 239000006185 dispersion Substances 0.000 claims abstract description 15
- 230000035515 penetration Effects 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 15
- 150000003512 tertiary amines Chemical class 0.000 claims description 15
- 239000008398 formation water Substances 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 239000011148 porous material Substances 0.000 claims description 9
- 229920002401 polyacrylamide Polymers 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- NAPSCFZYZVSQHF-UHFFFAOYSA-N dimantine Chemical group CCCCCCCCCCCCCCCCCCN(C)C NAPSCFZYZVSQHF-UHFFFAOYSA-N 0.000 claims description 4
- 239000003607 modifier Substances 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- 238000011161 development Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000000065 osmolyte Effects 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 44
- 230000000903 blocking effect Effects 0.000 abstract description 12
- 229920000642 polymer Polymers 0.000 abstract description 4
- 239000011435 rock Substances 0.000 abstract description 4
- 230000009545 invasion Effects 0.000 abstract description 3
- 239000012744 reinforcing agent Substances 0.000 abstract description 2
- 238000001338 self-assembly Methods 0.000 abstract description 2
- 235000015110 jellies Nutrition 0.000 abstract 2
- 239000008274 jelly Substances 0.000 abstract 2
- 239000003921 oil Substances 0.000 description 39
- 238000002347 injection Methods 0.000 description 19
- 239000007924 injection Substances 0.000 description 19
- 239000003129 oil well Substances 0.000 description 7
- 239000000178 monomer Substances 0.000 description 6
- 125000002091 cationic group Chemical group 0.000 description 5
- 238000011010 flushing procedure Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000003995 emulsifying agent Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- IANQTJSKSUMEQM-UHFFFAOYSA-N 1-benzofuran Chemical compound C1=CC=C2OC=CC2=C1 IANQTJSKSUMEQM-UHFFFAOYSA-N 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 2
- 239000004386 Erythritol Substances 0.000 description 2
- UNXHWFMMPAWVPI-UHFFFAOYSA-N Erythritol Natural products OCC(O)C(O)CO UNXHWFMMPAWVPI-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 125000005055 alkyl alkoxy group Chemical group 0.000 description 2
- 125000005211 alkyl trimethyl ammonium group Chemical group 0.000 description 2
- 235000019270 ammonium chloride Nutrition 0.000 description 2
- 229960003237 betaine Drugs 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 235000019414 erythritol Nutrition 0.000 description 2
- 229940009714 erythritol Drugs 0.000 description 2
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 2
- -1 mannitol erythritol ester Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- DZSVIVLGBJKQAP-UHFFFAOYSA-N 1-(2-methyl-5-propan-2-ylcyclohex-2-en-1-yl)propan-1-one Chemical group CCC(=O)C1CC(C(C)C)CC=C1C DZSVIVLGBJKQAP-UHFFFAOYSA-N 0.000 description 1
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 240000000972 Agathis dammara Species 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 229920002871 Dammar gum Polymers 0.000 description 1
- 229930195725 Mannitol Natural products 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012986 chain transfer agent Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000007957 coemulsifier Substances 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 235000010355 mannitol Nutrition 0.000 description 1
- 239000000594 mannitol Substances 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 1
- 239000004289 sodium hydrogen sulphite Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 150000003505 terpenes Chemical class 0.000 description 1
- 235000007586 terpenes Nutrition 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 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
- C09K8/50—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
- C09K8/5083—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- C09K8/426—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells for plugging
-
- 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
- C09K8/502—Oil-based compositions
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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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/882—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Geology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Sealing Material Composition (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention belongs to the technical field of oil and gas field plugging agents, and particularly relates to an phase permeability regulator, a preparation method and application thereof. The phase penetration regulator comprises the following components in percentage by weight: 5-10% of petroleum resin, 0.1-0.5% of surfactant, 0.1-0.2% of cationic polymer and the balance of stratum water. The invention provides an phase penetration regulator, which is prepared by using petroleum resin as a dispersion raw material and polymer as a reinforcing agent and combining a surfactant, and aims at solving the problems that a water plugging jelly system of a horizontal well of clastic rock in the prior stage causes pollution to a low-permeability potential section, a water-based jelly system enters an oil layer to cause damage and the like, and provides an oil-soluble self-assembly blocking system which has strong oil solubility, high water plugging strength and good stability, so that the purposes of water plugging and oil plugging are realized, and the water invasion of bottom water is effectively controlled.
Description
Technical Field
The invention belongs to the technical field of oil and gas field plugging agents, and particularly relates to an phase permeability regulator, a preparation method and application thereof.
Background
The clastic rock oil reservoir of the Tahe oil field belongs to a low-amplitude anticline (edge) bottom water reservoir, the bottom water of the reservoir is extremely strong, the thickness ratio of the maximum oil-water layer is up to 1:16, and the maximum oil-water ratio is up to 1:592. Because the water content of the tower and river oil field is high, the most effective water shutoff technology at present adopts a gel water shutoff system to perform water shutoff profile control, but the water shutoff gel system of the prior clastic rock horizontal well has the problems of pollution to a hypotonic potential section, damage to an oil layer caused by the water-based gel system entering the oil layer and the like, and is difficult to effectively control the water invasion of bottom water, thereby influencing the oil extraction rate. Therefore, the key to solve the problem is to develop a plugging agent with good oil solubility and excellent water plugging performance.
Patent CN109384889a discloses a polymer with a selective water shutoff function, which is prepared by emulsion polymerization of a monomer a, a monomer B, an oil-soluble resin and an emulsifier in the presence of an initiator, a chain transfer agent, a crosslinking agent and water as a solvent, wherein the monomer a is acrylamide; the monomer B is a sulfonic acid monomer, and the sulfonic acid monomer is 2-acrylamide-2-methylpropanesulfonic acid; the oil-soluble resin is one or more of rosin resin, dammar resin, oil-soluble phenolic resin, petroleum resin, terpene resin and coumarone resin; the emulsifier comprises a main emulsifier and/or a co-emulsifier. The polymer prepared by the invention has excellent selective water blocking effect without oil blocking effect and has higher scouring resistance multiple.
Patent CN108531153a discloses a high Wen Danyou resistant resin dispersion plugging agent, a preparation method and application thereof, the plugging agent is prepared from the following raw materials in percentage: 5 to 15 percent of petroleum resin, 0.1 to 0.5 percent of surfactant, 0.05 to 0.4 percent of cationic polyacrylamide, 0.1 to 0.4 percent of triethylene glycol amine, 0.1 to 0.5 percent of sodium bisulphite, 1 to 3 percent of silicon dioxide nano particles, 0.1 to 0.5 percent of pH regulator and the balance of water; the sum of the mass percentages of the raw materials is 100 percent. After the plugging agent disclosed by the patent is injected into a stratum, the cationic polyacrylamide in the stratum can undergo a modification reaction at the high temperature of the stratum to obtain sulfonic group modified cationic polyacrylamide, so that the high temperature resistance, salt resistance and stability of the petroleum resin dispersion plugging agent can be effectively improved, and the petroleum resin can smoothly reach the deep part of an oil reservoir oil well to realize high-temperature effective water plugging.
Patent CN111303854a discloses a sandstone oil reservoir infiltrant, an infiltrant fracturing fluid and a method for using the same, the sandstone oil reservoir infiltrant is prepared from alkyl trimethyl ammonium chloride, quaternary ammonium salt cationic fluorocarbon surfactant, alkyl alkoxy carboxyl betaine, mannitol erythritol ester and organic alcohol (10-15): (16-25): (12-20): (15-25): 100 mass ratio. The sandstone oil reservoir phase penetration agent provided by the invention takes alkyl trimethyl ammonium chloride, quaternary ammonium salt cationic fluorocarbon surfactant, alkyl alkoxy carboxyl betaine, mannose erythritol lipid and organic alcohol as raw materials, and all the components are synergistic, so that the sandstone surface can be transformed from oil wetting to water wetting, and the oil phase permeability is improved; meanwhile, the problems of more water and less oil output of the water injection benefiting well can be solved, and the crude oil recovery ratio is improved; water control and oil increase after fracturing can also be realized; meanwhile, the utility model has the characteristic of convenient use.
However, the above-mentioned phase-permeation regulator is too complex in composition or has a relatively good water-blocking effect, but has relatively poor stability, and cannot meet the water-blocking requirement of clastic rock oil reservoirs in actual production.
Disclosure of Invention
In order to solve the defects in the prior art, one of the purposes of the invention is to provide an phase permeability regulator for clastic oil reservoirs. The phase penetration regulator has the characteristics of good stability, strong oil solubility and high water blocking strength, and is suitable for stratum with high oil-water ratio.
It is another object of the present invention to provide a method for preparing the same.
In order to achieve the above object, the present invention provides the following technical solutions:
An phase penetration regulator comprises the following components in percentage by weight: 5-10% of petroleum resin, 0.1-0.5% of surfactant, 0.1-0.2% of cationic polymer and the balance of stratum water.
Preferably, the surfactant is octadecyl dimethyl ammonium oxide.
Preferably, the cationic polymer is temperature-resistant and salt-resistant polyacrylamide; the specific parameters of the polyacrylamide are as follows:
The molecular weight is 700-800 ten thousand, the ionic degree is 15-20%, and the solid content is more than 90%.
Preferably, the softening point temperature of the petroleum resin is 90-100 ℃.
Preferably, the phase penetration regulator also comprises a dispersing agent tertiary amine oxide, wherein the mass ratio of the tertiary amine oxide to the cationic polymer is 1-3:1. The tertiary amine oxide and the cationic polymer can synergistically improve the dispersion effect of the phase penetration regulator.
The invention also discloses a preparation method of the oil reservoir phase permeability regulator, which specifically comprises the following steps:
S1) crushing petroleum resin;
S2) weighing the cationic polymer, adding the cationic polymer into stratum water, and stirring and mixing uniformly; adding a surfactant, and stirring and uniformly mixing to obtain a dispersion liquid;
And S3) adding the crushed petroleum resin into the dispersion liquid, and stirring to obtain a suspension liquid, thus obtaining the oil reservoir phase permeability regulator.
Preferably, the petroleum resin is crushed by a crusher into particles not larger than 100 mesh.
Preferably, the mass ratio of tertiary amine oxide to cationic polymer is 1-3:1.
The invention provides application of the phase permeability regulator in clastic oil reservoir development.
Preferably, when the modifier is applied to a formation having a permeability of less than 15D, the raw materials used include:
0.1% surfactant +0.1% cationic polymer +5% petroleum resin + balance formation water.
Preferably, when the modifier is applied to a formation having a formation pore size of 15D or greater, the raw materials used include:
0.2% surfactant +0.2% cationic polymer +10% petroleum resin + balance formation water.
The regulator is prepared at present, and when the storage time exceeds 2 hours, the regulator is stored in a continuous oscillation mode or in an intermittent oscillation mode.
When the adjustment system is applied to an oil well with formation pores larger than or equal to 15D, the injection method adopts the injection carried by flushing the formation water at normal temperature, when the injection amount is 0.25PV (PV is the pore volume), the blocking rate can reach more than 70%, and when the injection is 1PV, the blocking rate can reach more than 90%, and the blocking effect is good.
When the adjusting system is applied to an oil well with stratum pores smaller than 15D, the injection method adopts high-temperature stratum water to wash and carry injection, and the temperature of the adopted high-temperature stratum water is not lower than 50 ℃.
Compared with the prior art, the invention has the beneficial effects that:
The invention provides an phase penetration regulator suitable for clastic oil reservoirs, which adopts petroleum resin as a dispersion raw material, adopts a polymer as a reinforcing agent and combines with a surfactant to obtain the phase penetration regulator for the clastic oil reservoirs, and aims at solving the problems that a water-based gel system of a horizontal well of the clastic oil reservoirs in the prior stage causes pollution to a low-permeability potential section, damages the oil layer caused by entering the water-based gel system, and the like, and provides an oil-soluble self-assembly blocking system with strong oil solubility, high water blocking strength and good stability, so that the purposes of blocking water without blocking oil and effectively controlling the invasion of bottom water are realized.
Research results show that the plugging time of the provided phase permeation regulator reaches 90 days at 130 ℃, and the plugging rate can reach 93.1% at the highest. Has excellent plugging effect. And the product has good stability without deterioration, coagulation and other phenomena at high temperature.
Detailed Description
The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and explanation only and is not intended to limit the present invention. In the following embodiment of the invention, the cationic polymer is temperature-resistant and salt-resistant polyacrylamide, PAM, the source is purchase, the manufacturer is Anhui, and the specific parameters are as follows: the molecular weight is 700-800 ten thousand, the ionic degree is 15-20%, and the solid content is more than 90%.
The petroleum resin is purchased in the market, and the manufacturer is Anhui huge ingredient.
Example 1
The clastic oil reservoir phase penetration regulator comprises the following components in percentage by weight:
0.1% of octadecyl dimethyl ammonium oxide, 0.1% of cationic polymer, 5% of petroleum resin and the balance of formation water;
the softening point temperature of the petroleum resin is 90-100 ℃.
The preparation method of the clastic oil reservoir phase permeability regulator comprises the following steps: s1) crushing petroleum resin into petroleum resin particles with the particle size smaller than 100 meshes by adopting a crusher;
S2) weighing tertiary amine oxide and cationic polymer, adding the tertiary amine oxide and the cationic polymer into formation water, and stirring and mixing uniformly; adding a surfactant, and stirring and uniformly mixing to obtain a dispersion liquid; wherein the addition amount of the tertiary amine oxide is 0.1%;
s3) adding the crushed petroleum resin into the dispersion liquid, and stirring the mixture at a high speed to form a suspension liquid to obtain the oil reservoir phase permeability regulator.
Example 2
The clastic oil reservoir phase penetration regulator comprises the following components in percentage by weight:
0.2% of octadecyl dimethyl ammonium oxide, 0.2% of cationic polymer, 10% of petroleum resin and the balance of formation water;
the softening point temperature of the petroleum resin is 90-100 ℃.
The preparation method of the clastic oil reservoir phase permeability regulator comprises the following steps: s1) crushing petroleum resin into petroleum resin particles with the particle size smaller than 100 meshes by adopting a crusher;
S2) weighing tertiary amine oxide and cationic polymer, adding the tertiary amine oxide and the cationic polymer into formation water, and stirring and mixing uniformly; adding a surfactant, and stirring and uniformly mixing to obtain a dispersion liquid; wherein the addition amount of the tertiary amine oxide is 0.1%;
s3) adding the crushed petroleum resin into the dispersion liquid, and stirring the mixture at a high speed to form a suspension liquid to obtain the oil reservoir phase permeability regulator.
Application example 1
Injecting the clastic oil reservoir phase permeability regulator prepared in the embodiment 1 into an oil well with stratum pores smaller than 15D within 2 hours after preparation, wherein the injection method comprises the following steps: the injection is carried out by flushing with high-temperature stratum water at a temperature not lower than 50 ℃ and the injection quantity is 0.25PV. The temperature condition of the plugging agent in the application example is 130 ℃, the plugging time is 90 days, and the plugging rate is 92.5%.
Application example 2
Injecting the clastic oil reservoir phase permeability regulator prepared in the embodiment 1 into an oil well with stratum pores smaller than 15D within 2 hours after preparation, wherein the injection method comprises the following steps: the injection is carried out by flushing with high-temperature stratum water at a temperature not lower than 50 ℃ and the injection quantity is 1PV. The blocking rate in this application example was 91.9%.
Application example 3
Injecting the clastic oil reservoir phase permeability regulator prepared in the embodiment 2 into an oil well with stratum pores larger than 15D in 2h, wherein the injection method comprises the following steps: the normal temperature stratum water is adopted for flushing and carrying injection, and the injection quantity is 0.25PV.
In the application example, the temperature condition of the plugging agent is 130 ℃, the plugging time is 90 days, and the plugging rate is 93.1%.
Application example 4
Injecting the clastic oil reservoir phase permeability regulator prepared in the embodiment 2 into an oil well with stratum pores larger than 15D in 2h, wherein the injection method comprises the following steps: the normal temperature stratum water is adopted for flushing and carrying injection, and the injection quantity is 1PV.
The temperature condition of the plugging agent in the application example is 130 ℃, the plugging time is 90 days, and the plugging rate is 92.3%.
The following shall be described: the above is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that the present invention is described in detail with reference to the foregoing embodiments, and modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The phase penetration regulator is characterized by comprising the following components in percentage by weight: 5-10% of petroleum resin, 0.1-0.5% of surfactant, 0.1-0.2% of cationic polymer, 0.1% of tertiary amine oxide and the balance of formation water; the surfactant is octadecyl dimethyl ammonium oxide;
the softening point temperature of the petroleum resin is 90-100 ℃;
The cationic polymer is temperature-resistant and salt-resistant polyacrylamide, the molecular weight is 700-800 ten thousand, the ionic degree is 15-20%, and the solid content is more than 90%;
the phase penetration regulator is prepared by the following preparation method:
S1) crushing petroleum resin;
S2) weighing tertiary amine oxide and cationic polymer, adding into formation water, and stirring and mixing uniformly; adding a surfactant, and stirring and uniformly mixing to obtain a dispersion liquid;
And S3) adding the crushed petroleum resin into the dispersion liquid, and stirring to obtain a suspension liquid, thus obtaining the oil reservoir phase permeability regulator.
2. The method for preparing an osmolyte regulator of claim 1, comprising the steps of:
S1) crushing petroleum resin;
S2) weighing tertiary amine oxide and cationic polymer, adding into formation water, and stirring and mixing uniformly; adding a surfactant, and stirring and uniformly mixing to obtain a dispersion liquid;
And S3) adding the crushed petroleum resin into the dispersion liquid, and stirring to obtain a suspension liquid, thus obtaining the oil reservoir phase permeability regulator.
3. The method for producing an osmolality adjusting agent according to claim 2, wherein the petroleum resin is pulverized into particles of not more than 100 mesh by a pulverizer.
4. Use of an osmolyte as claimed in claim 1 in the development of clastic oil reservoirs.
5. The use of claim 4, wherein when the modifier is used in a formation having a permeability of less than 15D, the raw materials used comprise: 0.1% surfactant +0.1% cationic polymer +5% petroleum resin +0.1% tertiary amine oxide + balance formation water.
6. The use of claim 4, wherein when the modifier is applied to a formation having a formation pore size of 15D or greater, the raw materials used comprise:
0.2% of surfactant +0.2% of cationic polymer +10% of petroleum resin +0.1% of tertiary amine oxide + the balance of formation water.
Priority Applications (1)
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