CN116970378B - Microbubble workover fluid and preparation method thereof - Google Patents
Microbubble workover fluid and preparation method thereof Download PDFInfo
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- CN116970378B CN116970378B CN202311234609.0A CN202311234609A CN116970378B CN 116970378 B CN116970378 B CN 116970378B CN 202311234609 A CN202311234609 A CN 202311234609A CN 116970378 B CN116970378 B CN 116970378B
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- 239000012530 fluid Substances 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000004094 surface-active agent Substances 0.000 claims abstract description 49
- XXROGKLTLUQVRX-UHFFFAOYSA-N allyl alcohol Chemical compound OCC=C XXROGKLTLUQVRX-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000002562 thickening agent Substances 0.000 claims abstract description 27
- 239000004088 foaming agent Substances 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 15
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims abstract description 14
- 125000001453 quaternary ammonium group Chemical group 0.000 claims abstract description 11
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 10
- 239000003945 anionic surfactant Substances 0.000 claims abstract description 10
- 229920000570 polyether Polymers 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- 150000003973 alkyl amines Chemical class 0.000 claims abstract description 6
- 238000006845 Michael addition reaction Methods 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 230000008439 repair process Effects 0.000 claims abstract description 5
- 239000003999 initiator Substances 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 20
- -1 alkyl primary amine Chemical class 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 14
- 239000000230 xanthan gum Substances 0.000 claims description 11
- 229920001285 xanthan gum Polymers 0.000 claims description 11
- 235000010493 xanthan gum Nutrition 0.000 claims description 11
- 229940082509 xanthan gum Drugs 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 8
- 229920000642 polymer Polymers 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 150000001413 amino acids Chemical class 0.000 claims description 7
- 239000003513 alkali Substances 0.000 claims description 6
- 239000003054 catalyst Substances 0.000 claims description 6
- DDXLVDQZPFLQMZ-UHFFFAOYSA-M dodecyl(trimethyl)azanium;chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(C)C DDXLVDQZPFLQMZ-UHFFFAOYSA-M 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 229920002401 polyacrylamide Polymers 0.000 claims description 5
- 239000002981 blocking agent Substances 0.000 claims description 4
- 150000001412 amines Chemical class 0.000 claims description 3
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 3
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims 1
- 150000003839 salts Chemical class 0.000 abstract description 5
- 238000007906 compression Methods 0.000 abstract description 4
- 238000011161 development Methods 0.000 abstract description 4
- 230000006835 compression Effects 0.000 abstract description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 33
- 230000000052 comparative effect Effects 0.000 description 13
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 6
- IOQPZZOEVPZRBK-UHFFFAOYSA-N octan-1-amine Chemical compound CCCCCCCCN IOQPZZOEVPZRBK-UHFFFAOYSA-N 0.000 description 6
- 229920000056 polyoxyethylene ether Polymers 0.000 description 6
- 229940051841 polyoxyethylene ether Drugs 0.000 description 6
- 239000006260 foam Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000004472 Lysine Substances 0.000 description 4
- KDXKERNSBIXSRK-UHFFFAOYSA-N Lysine Natural products NCCCCC(N)C(O)=O KDXKERNSBIXSRK-UHFFFAOYSA-N 0.000 description 4
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000002736 nonionic surfactant Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 2
- 229920001732 Lignosulfonate Polymers 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000033558 biomineral tissue development Effects 0.000 description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 description 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 2
- 125000001033 ether group Chemical group 0.000 description 2
- 238000013100 final test Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 229910017053 inorganic salt Inorganic materials 0.000 description 2
- 230000009545 invasion Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- DPBLXKKOBLCELK-UHFFFAOYSA-N pentan-1-amine Chemical compound CCCCCN DPBLXKKOBLCELK-UHFFFAOYSA-N 0.000 description 2
- 239000001103 potassium chloride Substances 0.000 description 2
- 235000011164 potassium chloride Nutrition 0.000 description 2
- 150000003141 primary amines Chemical class 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 229920002907 Guar gum Polymers 0.000 description 1
- KDXKERNSBIXSRK-YFKPBYRVSA-N L-lysine Chemical compound NCCCC[C@H](N)C(O)=O KDXKERNSBIXSRK-YFKPBYRVSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- MTCFGRXMJLQNBG-UHFFFAOYSA-N Serine Natural products OCC(N)C(O)=O MTCFGRXMJLQNBG-UHFFFAOYSA-N 0.000 description 1
- 240000003377 Shepherdia canadensis Species 0.000 description 1
- 235000018324 Shepherdia canadensis Nutrition 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 125000005233 alkylalcohol group Chemical group 0.000 description 1
- 125000003275 alpha amino acid group Chemical group 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 125000002843 carboxylic acid group Chemical group 0.000 description 1
- MRUAUOIMASANKQ-UHFFFAOYSA-N cocamidopropyl betaine Chemical compound CCCCCCCCCCCC(=O)NCCC[N+](C)(C)CC([O-])=O MRUAUOIMASANKQ-UHFFFAOYSA-N 0.000 description 1
- 229940073507 cocamidopropyl betaine Drugs 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- JRBPAEWTRLWTQC-UHFFFAOYSA-N dodecylamine Chemical group CCCCCCCCCCCCN JRBPAEWTRLWTQC-UHFFFAOYSA-N 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 239000004872 foam stabilizing agent Substances 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 239000000665 guar gum Substances 0.000 description 1
- 235000010417 guar gum Nutrition 0.000 description 1
- 229960002154 guar gum Drugs 0.000 description 1
- SSILHZFTFWOUJR-UHFFFAOYSA-M hexadecane-1-sulfonate Chemical compound CCCCCCCCCCCCCCCCS([O-])(=O)=O SSILHZFTFWOUJR-UHFFFAOYSA-M 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000006467 substitution reaction 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
- C09K8/50—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
- C09K8/514—Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
-
- 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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/516—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls characterised by their form or by the form of their components, e.g. encapsulated material
- C09K8/518—Foams
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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
- C09K8/584—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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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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)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Abstract
The invention discloses a microbubble well repair liquid and a preparation method thereof, and relates to the technical field of oil and gas field development aids. The microbubble workover fluid comprises a high molecular thickener and a foaming agent; wherein the foaming agent consists of a first surfactant, an anionic surfactant and a quaternary ammonium surfactant; the first surfactant is prepared by the following method: and (3) carrying out Michael addition reaction on primary alkyl amine and allyl alcohol to obtain an intermediate, and then taking the intermediate as an initiator and ethylene oxide as a main agent to prepare polyether, wherein the polyether is the first surfactant. The microbubble workover fluid disclosed by the invention has better temperature resistance, salt resistance and compression resistance.
Description
Technical Field
The invention relates to the technical field of oil and gas field development aids, in particular to a microbubble well repair liquid and a preparation method thereof.
Background
In the later development stage of the oil and gas field, the formation pressure is gradually reduced, and a large amount of leakage is generated by adopting conventional workover fluid, so that a reservoir is polluted, and meanwhile, larger economic loss is generated. For this reason, the prior art has developed a micro-foaming workover fluid, which mainly comprises a thickener and a foaming agent, and the density of the workover fluid is reduced by generating micro-foam in the workover fluid in the foaming agent. For example, chinese patent CN107286919a discloses a micro-bubble workover fluid and a preparation method thereof, wherein soapberry extract and fatty alcohol-polyoxyethylene ether are used as foaming agents, xanthan gum is used as a thickener to prepare the micro-bubble workover fluid, and the finally prepared workover fluid has a certain temperature resistance and salt resistance; chinese patent CN115197683A discloses a leak-proof low-density micro-foam workover fluid and a preparation method thereof, wherein fatty alcohol polyoxyethylene ether sodium sulfate and cocamidopropyl betaine are used as foaming agents, xanthan gum is used as a tackifier to prepare the workover fluid, and finally the workover fluid has certain stability and fluid loss performance. However, the existing microbubble workover fluid has relatively poor compression resistance and relatively poor salt resistance, so that the existing microbubble workover fluid is less applied to deep wells.
Disclosure of Invention
In view of the above technical problems, the present invention aims to overcome the defects of the prior art, and provide a microbubble workover fluid, which has strong temperature resistance, salt resistance and compression resistance.
The invention adopts the following technical scheme: the microbubble well repair liquid comprises, by mass, 0.3-1.5 parts of a high-molecular thickener, 0.1-0.5 part of a foaming agent and 100 parts of water;
the foaming agent comprises a first surfactant, an anionic surfactant and a quaternary ammonium surfactant in a mass ratio of 10:10-20:0.5-2;
the first surfactant is prepared by the following method: taking alkyl primary amine and allyl alcohol with the molar ratio of 1:2-2.2, carrying out Michael addition reaction to obtain an intermediate, and then taking the intermediate as an initiator and ethylene oxide as a main agent to prepare polyether, wherein the polyether is a first surfactant; the alkyl primary amine is linear primary amine with a carbon chain length of 6-13, and the mass ratio of the intermediate to the ethylene oxide is 2-3:4-10.
One embodiment of the invention is that the polymer thickener is one of xanthan gum and polyacrylamide thickener.
In one embodiment of the present invention, the anionic surfactant is one of a sulfate surfactant and a sulfonate surfactant.
In one embodiment of the invention, the primary alkyl amine is a primary linear amine with a carbon chain length of 8-10.
An embodiment of the present invention is that the specific preparation method of the first surfactant is as follows:
dissolving alkyl primary amine and allyl alcohol respectively, adding a catalyst into an alkyl primary amine solution, heating to 40-70 ℃, then dropwise adding the allyl alcohol solution into the alkyl primary amine solution, continuously reacting for 5-15 h, and removing a solvent after the reaction is finished to obtain an intermediate;
and adding the intermediate and alkali into a reaction kettle, removing oxygen in the reaction kettle, heating to 100-140 ℃, then adding ethylene oxide, enabling the pressure to be not more than 0.5MPa, and continuously reacting until the pressure of the system is not reduced.
In one embodiment of the invention, in the preparation process of the first surfactant, the preparation method further comprises a blocking agent, wherein the blocking agent is amino acid, and the mass ratio of the blocking agent to the intermediate is 2-5: 10.
another object of the present invention is to provide a method for preparing the above-mentioned microbubble workover fluid, which comprises the following steps: and adding the high polymer thickener into water, continuously stirring to dissolve the high polymer thickener, then adding the foaming agent, and continuously stirring for at least 20min under the condition of 100-600 r/min.
The beneficial effects of the invention are as follows: it has better temperature resistance and salt resistance, can resist formation water with 150 ℃ and 4.5 thousands of mineralization degree, and has better tolerance to calcium salt; meanwhile, the composite material also has certain compressive capacity, can be kept stable under the condition of 20MPa, therefore, the method can be applied to deep well development; the leakage preventing performance is stronger.
Detailed Description
In order to more clearly understand the technical features, objects and advantages of the present invention, the following detailed description of the technical solution of the present invention will be given with reference to examples, but should not be construed as limiting the scope of the present invention.
The microbubble well repair liquid comprises, by mass, 0.3-1.5 parts of a high-molecular thickener, 0.1-0.5 part of a foaming agent and 100 parts of water;
the foaming agent comprises a first surfactant, an anionic surfactant and a quaternary ammonium surfactant in a mass ratio of 10:10-20:0.5-2;
the first surfactant is prepared by the following method: taking alkyl primary amine and allyl alcohol with the molar ratio of 1:2-2.2, carrying out Michael addition reaction to obtain an intermediate, and then taking the intermediate as an initiator and ethylene oxide as a main agent to prepare polyether, wherein the polyether is a first surfactant; the alkyl primary amine is linear primary amine with a carbon chain length of 6-13, and the mass ratio of the intermediate to the ethylene oxide is 2-3:4-10.
Specifically, for the microbubble workover fluid, a thickener is generally needed, and the thickener is divided into a plurality of types, such as a high-molecular thickener, a low-molecular thickener, an inorganic salt thickener and the like. There are many polymeric thickeners such as xanthan gum and its derivatives, guar gum and its derivatives, polyacrylamide and its derivatives, carboxymethyl cellulose, etc., but xanthan gum and its derivatives, polyacrylamide and its derivatives may be selected as the thickener from the practical point of view. If the rest of the thickening agents, such as inorganic salt thickening agents, low-molecular thickening agents and the like are used, additional foam stabilizing agents are required to be added, and the effect is relatively poor.
In the invention, the nonionic first surfactant and the anionic surfactant are compounded, and a small amount of quaternary ammonium surfactant is added, so that the interfacial tension of the anionic surfactant is reduced, but the surfactant formed by the method has poor strength of foam and is difficult to apply to a high-pressure environment, so that the inventor discovers that the compressive property of the anionic surfactant, the quaternary ammonium surfactant and the nonionic surfactant developed by the inventor is greatly improved after a large amount of creative labor is carried out.
Meanwhile, the first surfactant of the present invention is different from conventional alkyl alcohol polyoxyethylene ether: the molecule of the surfactant contains two polyoxyethylene ether chains and amino, and meanwhile, in the invention, the addition of the intermediate and the ethylene oxide is strictly controlled, so that the chain length of the final polyoxyethylene ether is relatively short, and the synthesized first surfactant has better effect. Meanwhile, the carbon chain length of the primary alkyl amine is limited, so that the chain length of the hydrophobic chain in the first surfactant is not too long, and preferably, when the carbon chain length of the primary alkyl amine is 8-10, the effect is better. Compared with the conventional nonionic surfactant with a polyoxyethylene ether chain, the first surfactant has better foaming effect, and meanwhile, has certain improvement on the pressure resistance of foam.
For anionic surfactants, one of the more common sulfonate surfactants in the art, such as sodium dodecylbenzenesulfonate, lignosulfonate, cetyl sulfonate, may be selected, with a lesser amount being added the higher the HLB value, in comparison. For the quaternary ammonium surfactant, a common quaternary ammonium surfactant such as dodecyltrimethylammonium chloride, cetyltrimethylammonium bromide and the like can be selected.
For the above-mentioned first surfactant, although a general preparation method thereof has been disclosed, a person skilled in the art can prepare the first surfactant according to the method. However, the aforementioned methods have a wide range, such as the reaction temperature, reaction time, catalyst, etc. for the Michael addition reaction, and the yields of the final products vary. To this end, the inventors propose a better method of preparing the first surfactant:
dissolving alkyl primary amine and allyl alcohol respectively, adding a catalyst into an alkyl primary amine solution, heating to 40-70 ℃, then dropwise adding the allyl alcohol solution into the alkyl primary amine solution, continuously reacting for 5-15 h, and removing a solvent after the reaction is finished to obtain an intermediate; in the process, an alcohol solvent can be adopted as the solvent, and the catalyst is a basic catalyst common in the field, such as triethylamine and the like; meanwhile, the solvent can be removed by adopting a reduced pressure distillation mode, and unreacted allyl alcohol can be removed in the reduced pressure distillation process, so that the subsequent reactants are purer.
And adding the intermediate and alkali into a reaction kettle, removing oxygen in the reaction kettle, heating to 100-140 ℃, then adding ethylene oxide, enabling the pressure to be not more than 0.5MPa, and continuously reacting until the pressure of the system is not reduced. In the process, oxygen in the reaction kettle can be removed by introducing inert gas including nitrogen, and the added alkali is one of potassium hydroxide, sodium hydroxide and sodium carbonate, belongs to common alkali in the polyether preparation process, and the dosage of the alkali is usually 0.3% -0.8% of the total mass of reactants. The term "pressure of not more than 0.5MPa" as used herein means that the reaction is carried out under pressure conditions, but the pressure is not more than 0.5MPa, usually in the range of 0.3 to 0.5 MPa.
Similarly, for existing polyethylene glycols, they can be capped with capping agents to improve their performance. In the invention, amino acid is used as a capping agent for capping, and when the amino acid is used for capping, the carboxylic acid group in the amino acid and the hydroxyl at the tail end of polyether are mainly used for esterification reaction, and the amino acid can be amino acid conventional in the field, such as lysine, serine and the like, so that the performance of the capped first surfactant is better. The mass ratio of the end capping agent to the intermediate is 2-5: 10.
those skilled in the art will appreciate that, depending on the actual formation, additives having other functions may be added to the microbubble workover fluid of the present invention, such as a shale formation, a corresponding inhibitor may be added, and a corresponding bactericide may be added to avoid the influence of bacteria.
The preparation method of the microbubble workover fluid is similar to that of a conventional microbubble workover fluid, and mainly comprises the following steps: and adding the high polymer thickener into water, continuously stirring to dissolve the high polymer thickener, then adding the foaming agent, and continuously stirring for at least 20min under the condition of 100-600 r/min. In this process, when the polymer thickener is dissolved, it is stirred and dissolved according to a conventional method. However, when the foaming agent is added later, the stirring speed has certain requirements: when the stirring speed is too high, the foam size is large and difficult to apply, and when the stirring speed is too low, the stirring time needs to be prolonged to obtain better micro-bubble workover fluid, so that the stirring speed is set to be 100-600 r/min, and preferably 150-300 r/min.
In the following examples, unless otherwise specified, the operations are those conventionally known in the art.
In the examples which follow, the starting materials are conventional commercial products in the art unless specifically stated otherwise.
Example 1: the microbubble workover fluid consists of the following components: 10g of xanthan gum, 3g of foaming agent and 10g of potassium chloride are added into 1L of water, and the mixture is stirred uniformly; wherein the foaming agent consists of 1.15g of a first surfactant, 1.73g of sodium dodecyl benzene sulfonate and 0.12g of dodecyl trimethyl ammonium chloride. The preparation method comprises adding xanthan gum and potassium chloride into water, stirring to dissolve, adding foaming agent, and stirring for 30min under 200 r/min. Its density was measured to be 0.83g/cm 3 。
The first surfactant is prepared by the following method:
taking n-octylamine and allyl alcohol with the molar ratio of 1:2.1, respectively dissolving the n-octylamine and the allyl alcohol in ethanol, then adding triethylamine into the n-octylamine solution, heating to 55 ℃, then dropwise adding the allyl alcohol solution into the n-octylamine solution, continuously reacting for 10 hours, and distilling under reduced pressure after the reaction is finished to obtain an intermediate;
adding the intermediate and potassium hydroxide into a reaction kettle, introducing nitrogen for 30min to remove oxygen in the reaction kettle, then heating to 120 ℃, adding ethylene oxide to enable the pressure in the reaction kettle to be 0.5MPa, continuously reacting until the pressure in the reaction kettle is not reduced for 10min continuously, adding lysine and potassium hydroxide, and continuously reacting for 2h to obtain the product. Wherein, the mass ratio of the intermediate, the ethylene oxide, the lysine, the first potassium hydroxide and the later potassium hydroxide is 25:60:7.5:0.4:5, where first addition of potassium hydroxide refers to first addition of potassium hydroxide and later addition of potassium hydroxide refers to second addition of potassium hydroxide.
Example 2: this example differs from example 1 in that 10g of xanthan gum was replaced with 7g of polyacrylamide (molecular weight 800 ten thousand) in the microbubble workover fluid, and the remainder were the same. Its density was measured to be 0.83g/cm 3 。
Example 3: the difference between this example and example 1 is that in the microbubble workover fluid, the xanthan gum is replaced with carboxymethyl cellulose, and the rest are the same. Its density was measured to be 0.84g/cm 3 。
Example 4: the difference between this example and example 1 is that in the microbubble workover fluid, the xanthan gum is added in an amountThe foaming agent is added in an amount of 4.5g, and consists of 1.99g of a first surfactant, 2.39g of lignosulfonate and 0.12g of dodecyl trimethyl ammonium chloride, the balance is the same, and the mixture is stirred for 20min under the condition of 300r/min after the foaming agent is added. Its density was measured to be 0.72g/cm 3 。
Example 5: the difference between this example and example 1 is that the first surfactant was obtained after 10 minutes of continuous reaction in the reaction vessel without decreasing the pressure, and the remainder was the same. Its density was measured to be 0.84g/cm 3 。
Example 6: the difference between this example and example 1 is that in the preparation of the first surfactant, n-octylamine and allyl alcohol in a molar ratio of 1:2.1 are replaced with dodecylamine and allyl alcohol in a molar ratio of 1:2, and the mass ratio of the intermediate, ethylene oxide, lysine, potassium hydroxide added for the first time, and potassium hydroxide added for the later time is replaced with 30:80:9:0.6:8, after adding the foaming agent, stirring for 20min under the condition of 500r/min, and the rest are the same. Its density was measured to be 0.85g/cm 3 。
Comparative example 1
This comparative example differs from example 1 in that the first surfactant was replaced with polyoxyethylene lauryl ether-30, and the remainder were the same. Its density was measured to be 0.88g/cm 3 。
Comparative example 2
This comparative example differs from example 1 in that dodecyltrimethylammonium chloride was not added, and the remainder was the same. Its density was measured to be 0.91g/cm 3 。
Comparative example 3
The comparative example was different from example 1 in that the amount of dodecyltrimethylammonium chloride added was 1.73g, and the rest was the same. Its density was measured to be 0.97g/cm 3 。
Comparative example 4
This example differs from example 1 in that n-octylamine and n-pentylamine are replaced in the preparation of the first surfactant, and the remainder are the same. Its density was measured to be 0.93g/cm 3 。
To further illustrate the effectiveness of the microbubble workover fluid produced in the above examples, specific tests are used as follows.
1. Rheological properties
The microbubble workover fluids of the above examples and comparative examples were tested, and the rheological properties were measured by adding sodium chloride and calcium chloride to give concentrations of 40000mg/L and 5000mg/L, respectively, and then aging them at 150℃for 16 hours, and then measuring the rheological properties again, with the final results shown in Table 1.
TABLE 1 rheological property test results
As can be seen from Table 1, the microbubble workover fluid prepared in the examples of the present invention can withstand higher temperatures and higher mineralization, and has less performance change in these environments. Referring to example 1 and comparative example 1, it is clear that the nonionic surfactant has a large influence on the performance of the final microbubble workover fluid; referring to example 1 and comparative example 2, the quaternary ammonium type surfactant can significantly improve the performance of the microbubble workover fluid; referring to example 1 and comparative example 3, it is important to add the quaternary ammonium type surfactant; referring to example 1 and comparative example 4, it is understood that the molecular structure of the first surfactant is important.
2. Anti-compression Property
The microbubble workover fluids of the above examples and comparative examples were tested using a PVT fluid tester at 150 ℃ and the final test results are shown in table 2.
Table 2 table of density versus pressure
Note that: "-the density is more than 0.96, the workover fluid is difficult to be applied.
As can be seen from Table 2, the microbubble drilling fluid of the present invention has a better pressure endurance capability, and the density change is smaller with increasing pressure.
3. Leakage-proof property
The core was sampled, the gas permeability thereof was measured, then the invasion depth of the microbubble workover fluid of example 1 into the core was measured, the measurement pressure was 10MPa, the measurement time was 3 hours, and the final test results were shown in table 3.
TABLE 3 depth of invasion
From table 3, it can be seen that the microvesicle workover fluid prepared in the embodiment of the invention has a strong plugging capability on the core.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present invention disclosed in the embodiments of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (5)
1. The microbubble well repair liquid is characterized by comprising, by mass, 0.3-1.5 parts of a high-molecular thickener, 0.1-0.5 part of a foaming agent and 100 parts of water;
the foaming agent comprises a first surfactant, an anionic surfactant and a quaternary ammonium surfactant in a mass ratio of 10:10-20:0.5-2;
the first surfactant is prepared by the following method: taking alkyl primary amine and allyl alcohol with the molar ratio of 1:2-2.2, carrying out Michael addition reaction to obtain an intermediate, and then preparing polyether by taking the intermediate as an initiator, taking ethylene oxide as a main agent and amino acid as a blocking agent, wherein the polyether is a first surfactant; the primary alkyl amine is a primary linear chain amine with a carbon chain length of 6-13, the mass ratio of the intermediate to the ethylene oxide is 2-3:4-10, and the mass ratio of the end capping agent to the intermediate is 2-5: 10;
the anionic surfactant is one of sulfonate surfactants, and the quaternary ammonium surfactant is one of dodecyl trimethyl ammonium chloride and hexadecyl trimethyl ammonium bromide.
2. The microbubble workover fluid of claim 1, wherein the polymeric thickener is one of xanthan gum and polyacrylamide thickener.
3. The microbubble workover fluid of claim 1, wherein the primary alkyl amine is a primary linear amine having a carbon chain length of 8-10.
4. The microbubble workover fluid of claim 1, wherein the specific preparation method of the first surfactant is as follows:
dissolving alkyl primary amine and allyl alcohol respectively, adding a catalyst into an alkyl primary amine solution, heating to 40-70 ℃, then dropwise adding the allyl alcohol solution into the alkyl primary amine solution, continuously reacting for 5-15 h, and removing a solvent after the reaction is finished to obtain an intermediate;
adding the intermediate and alkali into a reaction kettle, removing oxygen in the reaction kettle, heating to 100-140 ℃, then adding ethylene oxide, enabling the pressure to be not more than 0.5MPa, continuously reacting until the pressure of the system is not reduced, and then blocking the reaction kettle by utilizing amino acid.
5. The method for preparing a microbubble workover fluid according to any one of claims 1 to 4, comprising the steps of: and adding the high polymer thickener into water, continuously stirring to dissolve the high polymer thickener, then adding the foaming agent, and continuously stirring for at least 20min under the condition of 100-600 r/min.
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102149787A (en) * | 2008-06-02 | 2011-08-10 | 德克萨斯州立大学董事会 | Method for treating hydrocarbon-bearing formations with fluorinated epoxides |
| CN103145974A (en) * | 2011-12-06 | 2013-06-12 | 中国科学院大连化学物理研究所 | Method of preparing primary amine by ammonification of alcoholic hydroxyl group |
| WO2015161470A1 (en) * | 2014-04-23 | 2015-10-29 | Solvay (Zhangjiagang) Specialty Chemicals Co., Ltd | Compounds, compositions thereof and methods for hydrocarbon extraction using the same |
| CN105683246A (en) * | 2013-09-05 | 2016-06-15 | 科思创德国股份有限公司 | Low viscosity polyether carbonate polyols having side chains |
| CN105899572A (en) * | 2013-09-20 | 2016-08-24 | 科思创德国股份有限公司 | Branched polyether carbonate polyols and process for preparation thereof |
| WO2016137433A1 (en) * | 2015-02-23 | 2016-09-01 | Halliburton Energy Services, Inc. | Crosslinked polymer compositions with two crosslinkers for use in subterranean formation operations |
| CN106414528A (en) * | 2014-03-24 | 2017-02-15 | 罗地亚经营管理公司 | Amphiphilic multiblock polymers |
| CA3038776A1 (en) * | 2016-10-04 | 2018-04-12 | Pilot Polymer Technologies, Inc. | Combination of a sulfonated surfactant composition and star macromolecules |
| CN108884226A (en) * | 2016-03-10 | 2018-11-23 | 莫门蒂夫性能材料股份有限公司 | The preparation of composition and organosiloxane nano rubber latex including organosiloxane nano rubber latex |
| CN114105809A (en) * | 2022-01-26 | 2022-03-01 | 山东新港化工有限公司 | N-alkyl amide surfactant and preparation method and application thereof |
| CN114250082A (en) * | 2021-12-03 | 2022-03-29 | 浙江皇马科技股份有限公司 | Preparation method of crude oil demulsifier |
| CN115093351A (en) * | 2022-07-15 | 2022-09-23 | 山东新港化工有限公司 | Modified betaine type gemini surfactant as well as preparation method and application thereof |
| CN115558367A (en) * | 2022-02-16 | 2023-01-03 | 深圳市尚笠实业有限公司 | Surface treating agent for aluminum profile radiator and preparation method thereof |
| CN115584268A (en) * | 2022-09-30 | 2023-01-10 | 陕西科技大学 | Disulfonic acid betaine viscoelastic surfactant, preparation method and application |
-
2023
- 2023-09-25 CN CN202311234609.0A patent/CN116970378B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102149787A (en) * | 2008-06-02 | 2011-08-10 | 德克萨斯州立大学董事会 | Method for treating hydrocarbon-bearing formations with fluorinated epoxides |
| CN103145974A (en) * | 2011-12-06 | 2013-06-12 | 中国科学院大连化学物理研究所 | Method of preparing primary amine by ammonification of alcoholic hydroxyl group |
| CN105683246A (en) * | 2013-09-05 | 2016-06-15 | 科思创德国股份有限公司 | Low viscosity polyether carbonate polyols having side chains |
| CN105899572A (en) * | 2013-09-20 | 2016-08-24 | 科思创德国股份有限公司 | Branched polyether carbonate polyols and process for preparation thereof |
| CN106414528A (en) * | 2014-03-24 | 2017-02-15 | 罗地亚经营管理公司 | Amphiphilic multiblock polymers |
| WO2015161470A1 (en) * | 2014-04-23 | 2015-10-29 | Solvay (Zhangjiagang) Specialty Chemicals Co., Ltd | Compounds, compositions thereof and methods for hydrocarbon extraction using the same |
| WO2016137433A1 (en) * | 2015-02-23 | 2016-09-01 | Halliburton Energy Services, Inc. | Crosslinked polymer compositions with two crosslinkers for use in subterranean formation operations |
| CN108884226A (en) * | 2016-03-10 | 2018-11-23 | 莫门蒂夫性能材料股份有限公司 | The preparation of composition and organosiloxane nano rubber latex including organosiloxane nano rubber latex |
| CA3038776A1 (en) * | 2016-10-04 | 2018-04-12 | Pilot Polymer Technologies, Inc. | Combination of a sulfonated surfactant composition and star macromolecules |
| CN114250082A (en) * | 2021-12-03 | 2022-03-29 | 浙江皇马科技股份有限公司 | Preparation method of crude oil demulsifier |
| CN114105809A (en) * | 2022-01-26 | 2022-03-01 | 山东新港化工有限公司 | N-alkyl amide surfactant and preparation method and application thereof |
| CN115558367A (en) * | 2022-02-16 | 2023-01-03 | 深圳市尚笠实业有限公司 | Surface treating agent for aluminum profile radiator and preparation method thereof |
| CN115093351A (en) * | 2022-07-15 | 2022-09-23 | 山东新港化工有限公司 | Modified betaine type gemini surfactant as well as preparation method and application thereof |
| CN115584268A (en) * | 2022-09-30 | 2023-01-10 | 陕西科技大学 | Disulfonic acid betaine viscoelastic surfactant, preparation method and application |
Non-Patent Citations (2)
| Title |
|---|
| Potential of surfactant foam stabilized by Ethylene glycol and Allyl alcohol for the remediation of diesel contaminated soil;Karthick, A，等;ENVIRONMENTAL TECHNOLOGY & INNOVATION;第14卷 * |
| 微泡钻井液室内研究及性能评价;谢建宇; 周亚贤; 耿晓慧; 卢国林; 刘光成; 郝继双;精细石油化工进展;第15卷(第04期);第30-34页 * |
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