CN111647392A - Carbon-based nano wetting reversal agent and preparation method and application thereof - Google Patents
Carbon-based nano wetting reversal agent and preparation method and application thereof Download PDFInfo
- Publication number
- CN111647392A CN111647392A CN202010544240.3A CN202010544240A CN111647392A CN 111647392 A CN111647392 A CN 111647392A CN 202010544240 A CN202010544240 A CN 202010544240A CN 111647392 A CN111647392 A CN 111647392A
- Authority
- CN
- China
- Prior art keywords
- carbon
- graphene oxide
- reversal agent
- wetting reversal
- based nano
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 115
- 238000009736 wetting Methods 0.000 title claims abstract description 56
- 239000012313 reversal agent Substances 0.000 title claims abstract description 53
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title description 3
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 70
- 239000002904 solvent Substances 0.000 claims abstract description 24
- 238000005553 drilling Methods 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000012530 fluid Substances 0.000 claims abstract description 20
- 239000004094 surface-active agent Substances 0.000 claims abstract description 13
- 150000001298 alcohols Chemical class 0.000 claims abstract description 5
- 239000002245 particle Substances 0.000 claims description 18
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- -1 alcohol compound Chemical class 0.000 claims description 15
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 150000001412 amines Chemical class 0.000 claims description 7
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical compound CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 claims description 5
- 239000003945 anionic surfactant Substances 0.000 claims description 5
- 239000002736 nonionic surfactant Substances 0.000 claims description 5
- 239000002135 nanosheet Substances 0.000 claims description 4
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 4
- FJLUATLTXUNBOT-UHFFFAOYSA-N 1-Hexadecylamine Chemical compound CCCCCCCCCCCCCCCCN FJLUATLTXUNBOT-UHFFFAOYSA-N 0.000 claims description 3
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 3
- JRBPAEWTRLWTQC-UHFFFAOYSA-N dodecylamine Chemical compound CCCCCCCCCCCCN JRBPAEWTRLWTQC-UHFFFAOYSA-N 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 claims description 3
- 229920000053 polysorbate 80 Polymers 0.000 claims description 3
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 3
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 3
- 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 claims description 2
- BCKXLBQYZLBQEK-KVVVOXFISA-M Sodium oleate Chemical compound [Na+].CCCCCCCC\C=C/CCCCCCCC([O-])=O BCKXLBQYZLBQEK-KVVVOXFISA-M 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- 239000004711 α-olefin Substances 0.000 claims description 2
- 239000002064 nanoplatelet Substances 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 25
- 238000002347 injection Methods 0.000 abstract description 9
- 239000007924 injection Substances 0.000 abstract description 9
- 238000011084 recovery Methods 0.000 abstract description 8
- 230000008859 change Effects 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 abstract description 2
- 235000020681 well water Nutrition 0.000 abstract 1
- 239000002349 well water Substances 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 description 20
- 239000003921 oil Substances 0.000 description 14
- 239000000243 solution Substances 0.000 description 14
- 239000006185 dispersion Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 10
- 238000012360 testing method Methods 0.000 description 10
- 238000009210 therapy by ultrasound Methods 0.000 description 10
- 235000019441 ethanol Nutrition 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000010779 crude oil Substances 0.000 description 6
- 239000008398 formation water Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000010992 reflux Methods 0.000 description 5
- 239000003995 emulsifying agent Substances 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 239000012065 filter cake Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- 239000004593 Epoxy Chemical group 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 125000005211 alkyl trimethyl ammonium group Chemical group 0.000 description 1
- 125000005233 alkylalcohol group Chemical group 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 230000005660 hydrophilic surface Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002060 nanoflake Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/182—Graphene
- C01B32/198—Graphene oxide
-
- 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
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
- C09K8/032—Inorganic additives
-
- 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
- C09K8/02—Well-drilling compositions
- C09K8/32—Non-aqueous well-drilling compositions, e.g. oil-based
-
- 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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/12—Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating
Abstract
The application discloses a carbon-based nano wetting reversal agent and application thereof, wherein the carbon-based nano wetting reversal agent comprises modified nano graphene oxide, a surfactant and a solvent I; the solvent I is at least one selected from alcohol compounds. The application provides a novel carbon back nanometer wetting reversal agent can be applied to the drilling fluid, can make stratum rock surface keep hydrophilic state, makes oil-wet rock surface wettability change into the water wet, is favorable to follow-up water injection well water injection, or the improvement of oil recovery well recovery ratio.
Description
Technical Field
The application relates to a carbon-based nano wetting reversal agent and application thereof, belonging to the technical field of chemistry.
Background
Wettability is a surface property of rock and is a major factor controlling the flow and distribution of reservoir fluids in the pore medium. During the processes of drilling, well completion, well workover, production increase measure implementation and water injection development, the wettability of the surface of rock pores is changed after external liquids such as drilling fluid, completion fluid and the like invade a reservoir stratum. After the wettability of the rock surface is changed, although the absolute permeability of a reservoir layer is not influenced, the absolute permeability has a direct influence on the relative permeability of oil and water phases. Recovery and well production must be severely affected if the wettability change causes a significant decrease in the relative or effective permeability of the oil, i.e., reservoir damage.
Research shows that the recovery rate of the water-wet reservoir is higher than that of the oil-wet reservoir. In order to reduce the damage of the drilling fluid to the reservoir during the drilling process and avoid the invasion of the drilling fluid to make the reservoir near the well wall change from water-wet or neutral wetting to oil-wet, a wetting reversal agent is usually added into the drilling fluid. After the wettability of the stratum is reversed (oil wet is changed into water wet), the flow-back speed is improved, the oil production rate can be improved, and the overall recovery benefit is improved.
The study of the wetting reversal agent is crucial to the formulation of drilling fluids, and surfactants are generally used to achieve the wetting reversal. In recent years, surfactants for wetting reversal in oil fields studied at home and abroad are mainly classified into three types: cationic surfactants, the most commonly used being alkyltrimethylammonium bromide (CTAB); ② anionic surfactant, mainly polyoxyethylene (propylene) alkyl alcohol ether sulfate or sulfonate; ③ nonionic surfactants, mainly polyoxyethylene alkylphenol ethers, etc. These existing products have some drawbacks, such as: high cost, unstable effect, no high temperature resistance, etc.
Disclosure of Invention
According to one aspect of the application, the carbon-based nano wetting reversal agent provided by the invention has small influence on rheological property of drilling fluid, can keep a reservoir hydrophilic, and can be produced in large quantity.
The carbon-based nano wetting reversal agent provided by the invention is a novel wetting reversal agent suitable for oil-based drilling fluid. The carbon-based nano wetting reversal agent takes graphene oxide as a raw material, and a large number of functional groups such as carboxyl, hydroxyl and epoxy exist on flaky graphene oxide molecules, so that the graphene oxide molecules are easy to combine with organic matters for reaction, and can be subjected to targeted grafting modification according to functional requirements. By utilizing the characteristic, the nano graphene oxide is modified, so that the nano graphene oxide is hydrophilic and oleophilic, and has certain interfacial activity. During the drilling process, the flaky nano molecules are adsorbed on the well wall to form a thin and tough filter cake, so that the filtration loss is reduced, and the well wall is kept stable; when drilling an oil layer, if the reservoir rock is hydrophilic, a large amount of adsorption does not occur, and if the reservoir rock is oleophilic, the reservoir rock can be adsorbed on the surface of the rock, so that the surface of the rock is changed into hydrophilic.
According to an aspect of the application, a carbon-based nano wetting reversal agent is provided, which comprises modified nano graphene oxide, a surfactant and a solvent I; the solvent I is at least one selected from alcohol compounds.
Optionally, the surfactant is selected from at least one of a nonionic surfactant and an anionic surfactant.
Optionally, the nonionic surfactant is selected from at least one of OP-10, OP-15 and Tween 80.
Optionally, the anionic surfactant is selected from at least one of sodium Alpha Olefin Sulfonate (AOS), Sodium Dodecylbenzenesulfonate (SDBS), sodium oleate.
Optionally, the alcohol compound is at least one selected from ethanol, propanol, ethylene glycol and propylene glycol.
Optionally, the carbon-based nano-wetting reversal agent further comprises solvent II; the solvent II is selected from water.
Optionally, the carbon-based nano-wetting reversal agent comprises:
0.1 to 0.3 wt% of modified nano graphene oxide;
0.5 to 1 wt% of a surfactant;
30 to 50 wt% of solvent I;
the balance being solvent II.
Preferably, the carbon-based nano-wetting reversal agent comprises:
0.1 to 0.25 wt% of modified nano graphene oxide;
0.5 to 0.8 wt% of a surfactant;
30 to 40 wt% of solvent I;
the balance being solvent II.
The solvent I in the application can increase the solubility of the modified nano graphene oxide and can enable the whole wetting reversal agent to be doped into the oil-based drilling fluid better; the solvent II is used for dissolving the modified graphene oxide and OP-10, and the solvent 2 can enhance the emulsifying capacity of the OP-10; the two solvents are used together, so that the purpose of dissolving the effective components can be achieved, the wetting reversal agent and the oil-based drilling fluid can be uniformly mixed, and meanwhile, the effect of the effective components is enhanced.
Optionally, the particle size of the modified nano graphene oxide is 250-350 nm.
Optionally, the upper limit of the particle size of the modified nano graphene oxide is independently selected from 350nm, 320nm, 300nm, 280nm and 260nm, and the lower limit thereof is independently selected from 250nm, 320nm, 300nm, 280nm and 260 nm.
Optionally, the modified nano graphene oxide is nano-flake.
Optionally, the modified graphene oxide is graphene oxide nanosheets chemically grafted with fatty amines on the surface.
Optionally, the fatty amine is selected from at least one of octadecylamine, dodecylamine, hexadecylamine.
Preferably, the fatty amine is selected from octadecylamine.
The number of carbon atoms of the aliphatic amine in this application also affects the lipophilicity and dispersion stability of the carbon-based nano wetting reversal agent.
Optionally, the modified nano graphene oxide in the application is prepared by the following method: and mixing the weak alkaline solution containing the graphene oxide with the solution containing the fatty amine, and reacting to obtain the fatty amine modified graphene oxide dispersion liquid.
Optionally, the modified nano graphene oxide in the application is prepared by the following method: dissolving graphene oxide in deionized water, adjusting the pH value of a graphene oxide solution to 8-9 with ammonia water, carrying out ultrasonic treatment on the solution for 1h by using an ultrasonic cell crusher to obtain a graphene oxide aqueous solution, continuously heating the graphene oxide aqueous solution to 60-90 ℃, and stirring and refluxing the graphene oxide aqueous solution. Dissolving fatty amine in absolute ethyl alcohol according to the proportion of 1: slowly adding the mixture into the graphene oxide aqueous solution in a volume ratio of 3-6, and stopping reaction after 3-6h to obtain the fatty amine modified graphene oxide dispersion liquid. Pouring the dispersion into a beaker, stirring uniformly, and carrying out ultrasonic treatment for 20 min. The particle size of the finally prepared fatty amine modified graphene oxide nanosheet is 250-350 nm.
The application also provides a preparation method of the carbon-based nano wetting reversal agent, which at least comprises the following steps: mixing the modified nano graphene oxide, a surfactant and a solvent I, and stirring to obtain the carbon-based nano wetting reversal agent;
the solvent I is at least one selected from alcohol compounds.
In another aspect of the application, the application of the carbon-based nano wetting reversal agent in drilling fluid is further provided.
The novel carbon-based nano wetting reversal agent disclosed by the invention is applied to drilling fluid, so that the surface of stratum rock can be kept in a hydrophilic state, the surface wettability of oil-wet rock is changed into water-wet state, and the subsequent water injection of a water injection well or the recovery ratio of an oil production well is favorably improved.
In the novel carbon-based nano wetting reversal agent, the modified nano graphene oxide and the alcohol compound (such as ethanol) can inhibit the wetting reversal agent from foaming, and the drilling fluid rheological property change caused by the foaming of the surfactant can be avoided by adding the modified nano graphene oxide and the alcohol compound into the drilling fluid, so that the application effect of the drilling fluid is more stable.
The graphene oxide raw material used in the present application is a sheet.
The beneficial effects that this application can produce include:
after the novel carbon-based nano wetting reversal agent is added into drilling fluid, the wetting reversal agent contains hydrophilic and oleophilic fatty amine modified graphene oxide, the nano material can be adsorbed on the surface of rock, so that hydrophilic rock is kept hydrophilic, oleophilic rock is changed into hydrophilic rock, the wetting effect is further enhanced by the added emulsifier, a reservoir layer is kept hydrophilic, the injection of a subsequent water injection well is facilitated, crude oil of an oil production well is produced, and the oil recovery rate is finally improved; in addition, the graphene oxide molecules are in a nano-sheet shape, so that the material consumption is low, the adsorption capacity is high, a thin and tough filter cake can be formed on a well wall, and the stability of the well wall in the well drilling process is facilitated; according to the wetting reversal agent, the fatty amine modified graphene oxide and the ethanol are added into the formula of the wetting reversal agent, so that the foaming of the reversal agent can be inhibited, and the rheological property of the wetting reversal agent cannot be influenced when the formula is added into the drilling fluid.
Detailed Description
The present application will be described in detail with reference to examples, but the present application is not limited to these examples.
The raw materials in the examples of the present application were all purchased commercially, unless otherwise specified.
The particle size test in the examples of the present application employs a nanometer particle sizer/ZETASIZER NANO-ZSE;
the contact angle test in the examples of the present application employed a video optical contact angle gauge/LAUDA LSA 60.
The 3 kinds of crude oil in the embodiment 5 of the application are crude oil of a certain block of oil fields of victory, Bohai sea and Jiangsu.
Example 1
Novel carbon-based nano wetting reversal agents include: 0.15 wt% of modified nano graphene oxide, 0.6 wt% of emulsifier OP-10, 35 wt% of ethanol and the balance of water (the total mass is 1000 g).
Preparing modified nano graphene oxide: dissolving 1g of graphene oxide in 400mL of deionized water, adjusting the pH value of a graphene oxide solution to 8-9 with ammonia water, carrying out ultrasonic treatment on the solution for 1h by using an ultrasonic cell crusher to obtain a graphene oxide aqueous solution, continuously heating the graphene oxide aqueous solution to 80 ℃, and stirring and refluxing the graphene oxide aqueous solution. 1g of octadecylamine was dissolved in 100mL of absolute ethanol according to a ratio of 1: and 4, slowly adding the mixture into the graphene oxide aqueous solution in a volume ratio of 4, and stopping reaction after 6 hours to obtain the octadecylamine modified graphene oxide dispersion liquid.
The particle size testing steps of the modified nano graphene oxide are as follows: and pouring the modified graphene oxide dispersion liquid into a beaker, uniformly stirring, performing ultrasonic treatment for 20min, and testing the particle size to be 287nm by using a nanometer particle size analyzer.
Example 2
Novel carbon-based nano wetting reversal agents include: 0.1 wt% of modified nano graphene oxide, 0.8 wt% of emulsifier OP-15, 30 wt% of propanol and the balance of water (the total mass is 1000 g).
Preparing modified nano graphene oxide: dissolving 1g of graphene oxide in 400mL of deionized water, adjusting the pH value of a graphene oxide solution to 8-9 with ammonia water, carrying out ultrasonic treatment on the solution for 1h by using an ultrasonic cell crusher to obtain a graphene oxide aqueous solution, continuously heating the graphene oxide aqueous solution to 70 ℃, and stirring and refluxing the graphene oxide aqueous solution. 1g of hexadecylamine was dissolved in 100mL of propanol according to 1: and slowly adding the solution with the volume ratio of 5 into the graphene oxide aqueous solution, and stopping reaction after 3 hours to obtain the hexadecylamine modified graphene oxide dispersion solution.
The particle size testing steps of the modified nano graphene oxide are as follows: and pouring the modified graphene oxide dispersion liquid into a beaker, uniformly stirring, performing ultrasonic treatment for 20min, and testing the particle size to be 322nm by using a nanometer particle size analyzer.
Example 3
Novel carbon-based nano wetting reversal agents include: 0.2 wt% of modified nano graphene oxide, 0.7 wt% of emulsifier Tween 80, 40 wt% of glycol and the balance of water (the total mass is 1000 g).
Preparing modified nano graphene oxide: dissolving 1g of graphene oxide in 400mL of deionized water, adjusting the pH value of a graphene oxide solution to 8-9 with ammonia water, carrying out ultrasonic treatment on the solution for 1h by using an ultrasonic cell crusher to obtain a graphene oxide aqueous solution, continuously heating the graphene oxide aqueous solution to 60 ℃, and stirring and refluxing the graphene oxide aqueous solution. 1g of dodecylamine was dissolved in 100mL of ethylene glycol according to a 1: and 6, slowly adding the mixture into the graphene oxide aqueous solution in a volume ratio of 6, and stopping reaction after 4 hours to obtain the dodecylamine modified graphene oxide dispersion liquid.
The particle size testing steps of the modified nano graphene oxide are as follows: and pouring the modified graphene oxide dispersion liquid into a beaker, uniformly stirring, performing ultrasonic treatment for 20min, and testing the particle size to be 291nm by using a nanometer particle size analyzer.
Example 4
Novel carbon-based nano wetting reversal agents include: 0.25 wt% of modified nano graphene oxide, 0.5 wt% of AOS, 40 wt% of propylene glycol and the balance of water (the total mass is 1000 g).
Preparing modified nano graphene oxide: dissolving 1g of graphene oxide in 400mL of deionized water, adjusting the pH value of a graphene oxide solution to 8-9 with ammonia water, carrying out ultrasonic treatment on the solution for 1h by using an ultrasonic cell crusher to obtain a graphene oxide aqueous solution, continuously heating the graphene oxide aqueous solution to 90 ℃, and stirring and refluxing the graphene oxide aqueous solution. 1g of octadecylamine was dissolved in 100mL of propylene glycol according to a 1: and 3, slowly adding the mixture into the graphene oxide aqueous solution in a volume ratio of 3, and stopping reaction after 5 hours to obtain the octadecylamine modified graphene oxide dispersion liquid.
The particle size testing steps of the modified nano graphene oxide are as follows: and pouring the modified graphene oxide dispersion liquid into a beaker, uniformly stirring, performing ultrasonic treatment for 20min, and testing the particle size to be 261nm by using a nanometer particle size analyzer.
Example 5
The simulated formation water is used as a water phase, and 3 kinds of crude oil are used as oil phases to treat the surface of the rock, and the treatment method comprises the following steps: firstly, cleaning and drying rock slices, respectively using simulated formation water and 3 crude oils to age and treat the rock surface, namely respectively soaking the rock slices in the simulated formation water and the 3 crude oils, standing and preserving heat for more than 48 hours in a thermostat at 50 ℃ in the aging process, and taking out and drying the prepared core slices. Hydrophilic and oleophilic surfaces were prepared separately and the rock surface was treated with the wet reverse prepared in examples 1 to 4 by: soaking the prepared hydrophilic and oleophilic rock slices in a wetting reversal agent solution, standing in a thermostat at 50 ℃ for 10min, taking out and drying in the air. And finally, measuring the contact angle of the simulated formation water on the rock surface. The results are shown in Table 1, typically for example 1: the contact angle of the simulated formation water on the hydrophilic surface is not changed greatly after the wetting reversal agent is treated, namely the surface still shows hydrophilicity; the contact angle of the oleophilic surface for simulating formation water is reduced to be less than 60 degrees after the treatment of the wetting reversal agent, namely the surface shows hydrophilicity, which shows that the wetting reversal agent can keep the surface of formation rock in a hydrophilic state, so that the wettability of the surface of oil-wet rock is changed into water-wet, and the method is favorable for the subsequent water injection of a water injection well or the improvement of the recovery ratio of a production well.
TABLE 1
Although the present application has been described with reference to a few embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application as defined by the appended claims.
Claims (10)
1. A carbon-based nano wetting reversal agent is characterized by comprising modified nano graphene oxide, a surfactant and a solvent I;
the solvent I is at least one selected from alcohol compounds.
2. The carbon-based nano wetting reversal agent according to claim 1, wherein the surfactant is selected from at least one of a nonionic surfactant and an anionic surfactant.
3. The carbon-based nano wetting reversal agent according to claim 2, wherein the non-ionic surfactant is selected from at least one of OP-10, OP-15, tween 80;
the anionic surfactant is at least one selected from sodium alpha-olefin sulfonate, sodium dodecyl benzene sulfonate and sodium oleate.
4. The carbon-based nano wetting reversal agent according to claim 1, wherein the alcohol compound is at least one selected from ethanol, propanol, ethylene glycol and propylene glycol.
5. The carbon-based nano wetting reversal agent according to claim 1, characterized in that the carbon-based nano wetting reversal agent further comprises a solvent II; the solvent II is selected from water.
6. The carbon-based nano wetting reversal agent according to claim 5, characterized in that the carbon-based nano wetting reversal agent comprises:
0.1 to 0.3 wt% of modified nano graphene oxide;
0.5 to 1 wt% of a surfactant;
30 to 50 wt% of solvent I;
the balance being solvent II.
7. The carbon-based nano wetting reversal agent according to claim 1, wherein the particle size of the modified nano graphene oxide is 250-350 nm.
8. The carbon-based nano wetting reversal agent according to claim 1, wherein the modified nano graphene oxide is nano-platelet;
preferably, the modified graphene oxide is a graphene oxide nanosheet chemically grafted with fatty amine on the surface;
preferably, the fatty amine is selected from at least one of octadecylamine, dodecylamine and hexadecylamine.
9. The method of preparing the carbon-based nano wetting reversal agent according to any of claims 1 to 8, characterized in that the method at least comprises: mixing the modified nano graphene oxide, a surfactant and a solvent I, and stirring to obtain the carbon-based nano wetting reversal agent;
the solvent I is at least one selected from alcohol compounds.
10. Use of the carbon-based nano wetting reversal agent according to any one of claims 1 to 8, the carbon-based nano wetting reversal agent prepared according to the method of claim 9, in a drilling fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010544240.3A CN111647392A (en) | 2020-06-15 | 2020-06-15 | Carbon-based nano wetting reversal agent and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010544240.3A CN111647392A (en) | 2020-06-15 | 2020-06-15 | Carbon-based nano wetting reversal agent and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111647392A true CN111647392A (en) | 2020-09-11 |
Family
ID=72349228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010544240.3A Pending CN111647392A (en) | 2020-06-15 | 2020-06-15 | Carbon-based nano wetting reversal agent and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111647392A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113292978A (en) * | 2021-05-28 | 2021-08-24 | 西南石油大学 | Amphoteric two-dimensional nanosheet and preparation method and application thereof |
| CN113736434A (en) * | 2021-09-22 | 2021-12-03 | 宁波锋成先进能源材料研究院有限公司 | Nano modified material and preparation method thereof, nano viscosity-reducing and cutting-reducing agent for oil-based mud and preparation method and application thereof |
| CN113980666A (en) * | 2021-11-05 | 2022-01-28 | 西南石油大学 | Nano fluid for improving oil recovery ratio of low-permeability reservoir |
| CN114562239A (en) * | 2022-03-07 | 2022-05-31 | 吉林大学 | Method and device for improving hydrate reservoir exploitation efficiency by adopting nanofluid |
| CN115895629A (en) * | 2022-11-03 | 2023-04-04 | 中国石油大学(华东) | Double-lyophobic sulfonated carbon nanotube/modified graphene oxide wetting reversal agent and preparation method and application thereof |
| CN116042196A (en) * | 2022-10-26 | 2023-05-02 | 四川康荣石油化工科技有限公司 | Modified graphite plugging agent with temperature resistance and oil resistance and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120245058A1 (en) * | 2011-03-22 | 2012-09-27 | Baker Hughes Incorporated | Graphene-Containing Fluids for Oil and Gas Exploration and Production |
| CN103298905A (en) * | 2010-10-06 | 2013-09-11 | M-I有限公司 | Graphene-based material for shale stabilization and method of use |
| US20160369157A1 (en) * | 2015-06-19 | 2016-12-22 | Baker Hughes Incorporated | Methods and suspensions for recovery of hydrocarbon material from subterranean formations |
| US20190016943A1 (en) * | 2015-07-17 | 2019-01-17 | University Of Houston System | Surfactant for enhanced oil recovery |
-
2020
- 2020-06-15 CN CN202010544240.3A patent/CN111647392A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103298905A (en) * | 2010-10-06 | 2013-09-11 | M-I有限公司 | Graphene-based material for shale stabilization and method of use |
| US20120245058A1 (en) * | 2011-03-22 | 2012-09-27 | Baker Hughes Incorporated | Graphene-Containing Fluids for Oil and Gas Exploration and Production |
| US20160369157A1 (en) * | 2015-06-19 | 2016-12-22 | Baker Hughes Incorporated | Methods and suspensions for recovery of hydrocarbon material from subterranean formations |
| US20190016943A1 (en) * | 2015-07-17 | 2019-01-17 | University Of Houston System | Surfactant for enhanced oil recovery |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113292978A (en) * | 2021-05-28 | 2021-08-24 | 西南石油大学 | Amphoteric two-dimensional nanosheet and preparation method and application thereof |
| CN113736434A (en) * | 2021-09-22 | 2021-12-03 | 宁波锋成先进能源材料研究院有限公司 | Nano modified material and preparation method thereof, nano viscosity-reducing and cutting-reducing agent for oil-based mud and preparation method and application thereof |
| CN113980666A (en) * | 2021-11-05 | 2022-01-28 | 西南石油大学 | Nano fluid for improving oil recovery ratio of low-permeability reservoir |
| CN114562239A (en) * | 2022-03-07 | 2022-05-31 | 吉林大学 | Method and device for improving hydrate reservoir exploitation efficiency by adopting nanofluid |
| CN116042196A (en) * | 2022-10-26 | 2023-05-02 | 四川康荣石油化工科技有限公司 | Modified graphite plugging agent with temperature resistance and oil resistance and application thereof |
| CN115895629A (en) * | 2022-11-03 | 2023-04-04 | 中国石油大学(华东) | Double-lyophobic sulfonated carbon nanotube/modified graphene oxide wetting reversal agent and preparation method and application thereof |
| CN115895629B (en) * | 2022-11-03 | 2023-11-07 | 中国石油大学(华东) | Double-hydrophobic sulfonated carbon nanotube/modified graphene oxide wetting reversal agent and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111647392A (en) | Carbon-based nano wetting reversal agent and preparation method and application thereof | |
| CN110173244B (en) | Viscosity-controllable in-situ emulsification and viscosification system and application thereof in water-drive reservoir | |
| CN104449631B (en) | Strong gas wettability nano silicon Xie Shui locks the method for agent, its preparation method and rock surface wettability reversal | |
| CN106833566B (en) | A kind of extremely-low density oil base drilling fluid and preparation method thereof | |
| WO2020237818A1 (en) | In-situ emulsification viscosity-increasing system with high phase change point, and application thereof in water-flooding oil reservoirs | |
| CN113717709B (en) | Nano fluid imbibition agent and preparation method and application thereof | |
| CN113122217B (en) | Carbon-based amphiphilic nano-flow for oil displacement and preparation method thereof | |
| WO2001083946A1 (en) | Fracturing fluid | |
| CN104694103A (en) | Surfactant compounded system with oil reservoir adaptability | |
| CN108559478A (en) | A kind of preparation method of high-order coal pressure break microemulsion-type cleanup additive | |
| Shuwa et al. | Heavy-oil-recovery enhancement with choline chloride/ethylene glycol-based deep eutectic solvent | |
| CN112226223A (en) | Surfactant composition for pressure reduction and injection increase of ultra-low permeability oil reservoir and preparation method thereof | |
| AU2021236069A1 (en) | Surfactants for oil and gas production | |
| CN108102628B (en) | Foam oil-displacing agent, foam segment plug type oil-displacing composition and preparation method and application thereof | |
| CN113150763B (en) | Nano emulsion injection increasing agent for water injection and preparation method thereof | |
| Su et al. | Synthesis and Assessment of a CO2‐Switchable Foaming Agent Used in Drilling Fluids for Underbalanced Drilling | |
| CN104559972A (en) | Microcrack micro-nano plugging material for drilling and preparation method | |
| CN106590572B (en) | Composite surfactant composition for displacement of reservoir oil of hypersalinity | |
| CN116083066B (en) | Composite flooding composition of two-dimensional nano particles and preparation method of two-dimensional nano particles | |
| CN114381282A (en) | Surfactant and preparation method thereof, microemulsion plugging agent and preparation method thereof, and water-based drilling fluid | |
| CN113214473B (en) | Preparation method and application of low-permeability reservoir water injection well pressure-reducing and injection-increasing polyamide | |
| CN102757777B (en) | Inhibition water locking type high temperature resistant fracturing fluid for tight gas reservoir fracturing | |
| CN111088008A (en) | Surfactant composition for pressure reduction and injection increase of low-permeability oil reservoir and preparation method and application thereof | |
| CN115895630B (en) | Imbibition oil displacement agent, preparation method thereof, coupled imbibition fracturing fluid and application thereof | |
| CN117487535B (en) | Preparation process of fracturing, acidifying, foaming and cleanup additive |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200911 |