CN115197679B - High-temperature-resistant quick drilling agent, preparation method thereof and application thereof in water-based drilling fluid - Google Patents
High-temperature-resistant quick drilling agent, preparation method thereof and application thereof in water-based drilling fluid Download PDFInfo
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- CN115197679B CN115197679B CN202211037091.7A CN202211037091A CN115197679B CN 115197679 B CN115197679 B CN 115197679B CN 202211037091 A CN202211037091 A CN 202211037091A CN 115197679 B CN115197679 B CN 115197679B
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- trimethyl ammonium
- drilling fluid
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- 238000005553 drilling Methods 0.000 title claims abstract description 252
- 239000012530 fluid Substances 0.000 title claims abstract description 98
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 93
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 238000002360 preparation method Methods 0.000 title abstract description 21
- 239000000178 monomer Substances 0.000 claims abstract description 28
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000003999 initiator Substances 0.000 claims abstract description 22
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 16
- 239000004094 surface-active agent Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 150000002148 esters Chemical class 0.000 claims abstract description 8
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims abstract description 8
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims abstract description 7
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 7
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000003054 catalyst Substances 0.000 claims abstract description 7
- 150000001875 compounds Chemical class 0.000 claims abstract description 7
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 7
- 239000011737 fluorine Substances 0.000 claims abstract description 7
- 229910000077 silane Inorganic materials 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims description 36
- 238000006243 chemical reaction Methods 0.000 claims description 28
- 239000007788 liquid Substances 0.000 claims description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 15
- 239000000243 solution Substances 0.000 claims description 15
- 238000010008 shearing Methods 0.000 claims description 13
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 12
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 12
- CYEJMVLDXAUOPN-UHFFFAOYSA-N 2-dodecylphenol Chemical compound CCCCCCCCCCCCC1=CC=CC=C1O CYEJMVLDXAUOPN-UHFFFAOYSA-N 0.000 claims description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical group [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 10
- DDXLVDQZPFLQMZ-UHFFFAOYSA-M dodecyl(trimethyl)azanium;chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(C)C DDXLVDQZPFLQMZ-UHFFFAOYSA-M 0.000 claims description 10
- 239000012074 organic phase Substances 0.000 claims description 10
- 239000012071 phase Substances 0.000 claims description 10
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical group [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 7
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 6
- 239000003093 cationic surfactant Substances 0.000 claims description 6
- GQOKIYDTHHZSCJ-UHFFFAOYSA-M dimethyl-bis(prop-2-enyl)azanium;chloride Chemical compound [Cl-].C=CC[N+](C)(C)CC=C GQOKIYDTHHZSCJ-UHFFFAOYSA-M 0.000 claims description 6
- 239000002736 nonionic surfactant Substances 0.000 claims description 6
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 claims description 6
- 229920000053 polysorbate 80 Polymers 0.000 claims description 6
- XFTALRAZSCGSKN-UHFFFAOYSA-M sodium;4-ethenylbenzenesulfonate Chemical group [Na+].[O-]S(=O)(=O)C1=CC=C(C=C)C=C1 XFTALRAZSCGSKN-UHFFFAOYSA-M 0.000 claims description 6
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 5
- NWGKJDSIEKMTRX-AAZCQSIUSA-N Sorbitan monooleate Chemical group CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O NWGKJDSIEKMTRX-AAZCQSIUSA-N 0.000 claims description 5
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 4
- DPBJAVGHACCNRL-UHFFFAOYSA-N 2-(dimethylamino)ethyl prop-2-enoate Chemical compound CN(C)CCOC(=O)C=C DPBJAVGHACCNRL-UHFFFAOYSA-N 0.000 claims description 4
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 4
- AOMUHOFOVNGZAN-UHFFFAOYSA-N N,N-bis(2-hydroxyethyl)dodecanamide Chemical compound CCCCCCCCCCCC(=O)N(CCO)CCO AOMUHOFOVNGZAN-UHFFFAOYSA-N 0.000 claims description 3
- BHFJBHMTEDLICO-UHFFFAOYSA-N Perfluorooctylsulfonyl fluoride Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)S(F)(=O)=O BHFJBHMTEDLICO-UHFFFAOYSA-N 0.000 claims description 3
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- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 claims description 3
- JKNCOURZONDCGV-UHFFFAOYSA-N 2-(dimethylamino)ethyl 2-methylprop-2-enoate Chemical compound CN(C)CCOC(=O)C(C)=C JKNCOURZONDCGV-UHFFFAOYSA-N 0.000 claims description 2
- FGZFESWHQXSPJU-UHFFFAOYSA-N 2-methyl-2-(3,3,3-trifluoropropyl)-1,3,5,2,4,6-trioxatrisilinane Chemical compound FC(F)(F)CC[Si]1(C)O[SiH2]O[SiH2]O1 FGZFESWHQXSPJU-UHFFFAOYSA-N 0.000 claims description 2
- ZYAASQNKCWTPKI-UHFFFAOYSA-N 3-[dimethoxy(methyl)silyl]propan-1-amine Chemical compound CO[Si](C)(OC)CCCN ZYAASQNKCWTPKI-UHFFFAOYSA-N 0.000 claims description 2
- JHUFGBSGINLPOW-UHFFFAOYSA-N 3-chloro-4-(trifluoromethoxy)benzoyl cyanide Chemical compound FC(F)(F)OC1=CC=C(C(=O)C#N)C=C1Cl JHUFGBSGINLPOW-UHFFFAOYSA-N 0.000 claims description 2
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 claims description 2
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 2
- CXRFDZFCGOPDTD-UHFFFAOYSA-M Cetrimide Chemical compound [Br-].CCCCCCCCCCCCCC[N+](C)(C)C CXRFDZFCGOPDTD-UHFFFAOYSA-M 0.000 claims description 2
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 2
- 229920001213 Polysorbate 20 Polymers 0.000 claims description 2
- 229920001214 Polysorbate 60 Polymers 0.000 claims description 2
- VBIIFPGSPJYLRR-UHFFFAOYSA-M Stearyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCCCC[N+](C)(C)C VBIIFPGSPJYLRR-UHFFFAOYSA-M 0.000 claims description 2
- HVUMOYIDDBPOLL-XGKPLOKHSA-N [2-[(2r,3r,4s)-3,4-dihydroxyoxolan-2-yl]-2-hydroxyethyl] octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)[C@H]1OC[C@H](O)[C@H]1O HVUMOYIDDBPOLL-XGKPLOKHSA-N 0.000 claims description 2
- 239000012670 alkaline solution Substances 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims description 2
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 2
- WOWHHFRSBJGXCM-UHFFFAOYSA-M cetyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+](C)(C)C WOWHHFRSBJGXCM-UHFFFAOYSA-M 0.000 claims description 2
- XJWSAJYUBXQQDR-UHFFFAOYSA-M dodecyltrimethylammonium bromide Chemical compound [Br-].CCCCCCCCCCCC[N+](C)(C)C XJWSAJYUBXQQDR-UHFFFAOYSA-M 0.000 claims description 2
- 239000011259 mixed solution Substances 0.000 claims description 2
- 239000000256 polyoxyethylene sorbitan monolaurate Substances 0.000 claims description 2
- 235000010486 polyoxyethylene sorbitan monolaurate Nutrition 0.000 claims description 2
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- FZGFBJMPSHGTRQ-UHFFFAOYSA-M trimethyl(2-prop-2-enoyloxyethyl)azanium;chloride Chemical compound [Cl-].C[N+](C)(C)CCOC(=O)C=C FZGFBJMPSHGTRQ-UHFFFAOYSA-M 0.000 claims description 2
- SZEMGTQCPRNXEG-UHFFFAOYSA-M trimethyl(octadecyl)azanium;bromide Chemical compound [Br-].CCCCCCCCCCCCCCCCCC[N+](C)(C)C SZEMGTQCPRNXEG-UHFFFAOYSA-M 0.000 claims description 2
- CEYYIKYYFSTQRU-UHFFFAOYSA-M trimethyl(tetradecyl)azanium;chloride Chemical compound [Cl-].CCCCCCCCCCCCCC[N+](C)(C)C CEYYIKYYFSTQRU-UHFFFAOYSA-M 0.000 claims description 2
- RRHXZLALVWBDKH-UHFFFAOYSA-M trimethyl-[2-(2-methylprop-2-enoyloxy)ethyl]azanium;chloride Chemical compound [Cl-].CC(=C)C(=O)OCC[N+](C)(C)C RRHXZLALVWBDKH-UHFFFAOYSA-M 0.000 claims description 2
- FVCRNYKHXHXNMF-UHFFFAOYSA-M trimethyl-[3-(2-methylprop-2-enoyloxyamino)propyl]azanium;chloride Chemical compound [Cl-].CC(=C)C(=O)ONCCC[N+](C)(C)C FVCRNYKHXHXNMF-UHFFFAOYSA-M 0.000 claims description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 2
- DZSVIVLGBJKQAP-UHFFFAOYSA-N 1-(2-methyl-5-propan-2-ylcyclohex-2-en-1-yl)propan-1-one Chemical compound CCC(=O)C1CC(C(C)C)CC=C1C DZSVIVLGBJKQAP-UHFFFAOYSA-N 0.000 claims 1
- MTEZSDOQASFMDI-UHFFFAOYSA-N 1-trimethoxysilylpropan-1-ol Chemical compound CCC(O)[Si](OC)(OC)OC MTEZSDOQASFMDI-UHFFFAOYSA-N 0.000 claims 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 claims 1
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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
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
- C09K8/035—Organic additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F212/14—Monomers containing only one unsaturated aliphatic radical containing one ring substituted by heteroatoms or groups containing heteroatoms
- C08F212/30—Sulfur
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/22—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
- C08G77/24—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen halogen-containing groups
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- C—CHEMISTRY; METALLURGY
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Abstract
The invention provides a high-temperature-resistant quick drilling agent, a preparation method thereof and application thereof in water-based drilling fluid. The quick drilling agent comprises the following raw materials in parts by mass: 4-5 parts of component A, 2-3 parts of component B, 2-3 parts of white oil and 0.5-1 part of surfactant; wherein the component A comprises the following raw materials in parts by mass: 3 to 5 parts of sulfonic acid monomer, 3 to 5 parts of carboxyl monomer, 1 to 2 parts of ester monomer, 0.5 to 1 part of organic quaternary ammonium salt monomer, 50 to 70 parts of water, 3 to 5 parts of isopropanol, 6 to 10 parts of hydrophilic emulsifier, 6 to 10 parts of lipophilic emulsifier and 0.1 to 0.3 part of initiator; the component B comprises the following raw materials in parts by mass: 1 part of fluorine-containing compound, 2-3 parts of silane materials, 0.5-1 part of triethylamine and 0.005-0.02 part of catalyst. The quick drilling agent can obviously improve the lubricating property of drilling fluid, inhibit the hydration expansion and coalescence of rock, obviously improve the drilling speed and has excellent temperature resistance.
Description
Technical Field
The invention relates to a high-temperature-resistant quick drilling agent, a preparation method thereof and application thereof in water-based drilling fluid, and belongs to the technical field of petroleum drilling fluid.
Background
In the drilling process of petroleum exploration and development, the problem of slow drilling speed of a large-size well bore and a deep stratum high-density drilling fluid well section is a technical problem to be solved in deep well drilling in China. The drilling rate is improved, the drill footage is improved, the tripping time is reduced, and the economic benefit of drilling work can be obviously improved. The problem of how to increase the drilling speed is a great technical obstacle for improving the drilling success rate of ultra-deep wells of deep wells, shortening the well construction period of the deep wells and improving the economic benefit in China. The problem of drilling acceleration is always the key point of research at home and abroad, but no effective mature technology exists.
The factors influencing the drilling speed are multiple and complex, the drilling speed is a complex function influenced by a plurality of system variables and environment variables, the environment variables are limited in operation, but the purpose of improving the mechanical drilling speed can be achieved by controlling the system variables, and the system variables comprise: the types of drill bits, reasonable drilling tool combinations, mechanical and hydraulic factors of the drill bits and the performance of drilling fluids, so that the current approaches for improving the drilling speed generally have 3 types: firstly, developing a novel rapid drilling fluid technology; secondly, designing a high-efficiency drill bit and optimizing the structure of a drilling tool; thirdly, well drilling optimization technology is applied. At present, PDC drill bits, lion-tiger drill bits and the like are researched for efficient rock breaking drill bits, but research and manufacturing cost of the drill bits are expensive, difficulty in further improvement is high, and a large research space is still available for improving the mechanical drilling rate by optimizing the performance of drilling fluid. The research on the aspect of improving the drilling speed of the drilling fluid in China comprises that drilling fluid systems such as synthetic base drilling fluid, simulated oil base drilling fluid, strong inhibition and polymeric alcohol drilling fluid and the like all have good effects. However, these drilling fluids are limited in their application due to the problems of high price and environmental pollution, so it is still important to increase the drilling speed of water-based drilling fluids. Practice proves that the density, solid phase content, fluid loss, rheological property, lubricity, adhesiveness and the like of the drilling fluid have obvious influence on the mechanical drilling speed. Changing the properties of the drilling fluid, such as reducing viscosity and friction, can make the drilling rate of the water-based drilling fluid marginally reach the level of the oil-based drilling fluid.
The water-based drilling fluid is required to improve the drilling speed, not only the lubricity of the drilling fluid is required to be improved, but also the adsorption of solid phase particles to a drilling tool in the drilling process is required to be reduced, the hydration expansion and the dispersion migration of rock are inhibited, the cleaning of a drill bit and a well bottom is ensured, and meanwhile, the deep well ultra-deep well drilling fluid is required to have good temperature resistance. Chinese patent document CN107474805a provides a accelerating agent suitable for drilling fluids, comprising: the accelerating agent can lubricate drill bits and drilling tools, prevent drill cuttings from mutually gathering, reduce friction and improve mechanical drilling speed, and the sulfonated polyglycerol long-chain fatty acid ester in the accelerating agent mainly plays a role in lubrication, but has lower lubricity, poorer temperature resistance and easier decomposition and losing effect in alkaline environment. Chinese patent document CN102260487a provides a drilling fluid quick drilling agent, which is a viscous liquid containing animal oil, propyl trimethyl ammonium chloride, oleic acid, ethylene glycol, chlorinated paraffin, mechanical oil, triethanolamine and chlorinated stearic acid. However, the quick drilling agent is in a viscous liquid to paste form, has poor dispersion performance in water-based drilling fluid, cannot well play a role, and contains animal oil which is easier to deteriorate and lose efficacy in a high-temperature environment; secondly, the shale has insufficient hydration inhibition effect, and poor adsorptivity on the surfaces of rocks and drilling tools, so that the lubricity and inhibition are insufficient.
At present, the water-based drilling fluid has the problems of slower mechanical drilling speed and difficult speed increasing in the ultra-deep well drilling process of a deep well, so that the research and development of the high-temperature-resistant quick drilling agent has small influence on the rheological property of the drilling fluid, can remarkably improve the lubricity of the drilling fluid, inhibit hydration expansion and coalescence of clay, can effectively improve the drilling speed, and has good application prospect.
Disclosure of Invention
Aiming at the defects of the prior art, in particular to the problem that the mechanical drilling speed is slow and the mechanical drilling speed is difficult to be increased in the deep well ultra-deep well drilling process of the existing water-based drilling fluid, the invention provides a high-temperature-resistant quick drilling agent, a preparation method thereof and application of the high-temperature-resistant quick drilling agent in the water-based drilling fluid. The quick drilling agent can obviously improve the lubricating property of drilling fluid, inhibit the hydration expansion and coalescence of rock, obviously improve the drilling speed and have excellent temperature resistance.
The technical scheme of the invention is as follows:
the high-temperature-resistant quick drilling agent comprises the following raw materials in parts by mass: 4-5 parts of component A, 2-3 parts of component B, 2-3 parts of white oil and 0.5-1 part of surfactant;
the component A comprises the following raw materials in parts by mass: 3 to 5 parts of sulfonic acid monomer, 3 to 5 parts of carboxyl monomer, 1 to 2 parts of ester monomer, 0.5 to 1 part of organic quaternary ammonium salt monomer, 50 to 70 parts of deionized water, 3 to 5 parts of isopropanol, 6 to 10 parts of hydrophilic emulsifier, 6 to 10 parts of lipophilic emulsifier and 0.1 to 0.3 part of initiator;
the component B comprises the following raw materials in parts by mass: 1 part of fluorine-containing compound, 2-3 parts of silane materials, 0.5-1 part of triethylamine and 0.005-0.02 part of catalyst.
According to the invention, the white oil is common commercial white oil; preferably, the white oil is a 3# white oil, a 5# white oil, a 7# white oil, or a 10# white oil, and more preferably a 3# white oil.
According to the invention, preferably, the surfactant is a combination of cationic surfactant and nonionic surfactant, wherein the mass ratio of the cationic surfactant to the nonionic surfactant is 1:1;
further preferably, the cationic surfactant is one or more of dodecyl trimethyl ammonium chloride, tetradecyl trimethyl ammonium chloride, hexadecyl trimethyl ammonium chloride, octadecyl trimethyl ammonium chloride, dodecyl trimethyl ammonium bromide, tetradecyl trimethyl ammonium bromide, hexadecyl trimethyl ammonium bromide, and octadecyl trimethyl ammonium bromide, and preferably dodecyl trimethyl ammonium chloride; the nonionic surfactant is one or more of dodecylphenol polyoxyethylene ether (OP-10), lauroyl Diethanolamine (LDEA), polyoxyethylene octadecylamine (CAS number 26635-92-7) and cocoamine polyoxyethylene ether, preferably dodecylphenol polyoxyethylene ether (OP-10).
According to the invention, the sulfonic acid monomer is sodium p-styrenesulfonate, sodium allylsulfonate or 2-acrylamido-2-methylpropanesulfonic acid, preferably sodium p-styrenesulfonate.
According to a preferred embodiment of the invention, the carboxyl monomer is acrylic acid or maleic anhydride.
According to the invention, the ester monomer is one or more than two of dimethylaminoethyl acrylate, vinyl acetate and dimethylaminoethyl methacrylate.
According to a preferred embodiment of the present invention, the organic quaternary ammonium salt monomer is one or a combination of two or more of methacryloxyethyl trimethyl ammonium chloride (DMC), 3-methacryloxyaminopropyl trimethyl ammonium chloride, acryloxyethyl trimethyl ammonium chloride (DAC), and dimethyl diallyl ammonium chloride (DMDAAC).
Preferably according to the invention, the hydrophilic emulsifier is Tween80, tween60 or Tween20; the lipophilic emulsifier is Span80 or Span60.
Preferably, according to the invention, the initiator is ammonium persulfate, potassium persulfate, dibenzoyl peroxide or t-butyl hydroperoxide.
According to the invention, component A is preferably prepared as follows:
(1) Adding sulfonic acid monomer, carboxyl monomer and organic quaternary ammonium salt monomer into deionized water, regulating the pH value of the system to 6-9, adding hydrophilic emulsifier, stirring to dissolve the hydrophilic emulsifier, and obtaining a water phase;
(2) Mixing an ester monomer with isopropanol, adding a lipophilic emulsifier, and uniformly mixing to obtain an organic phase;
(3) Mixing the water phase in the step (1) and the organic phase in the step (2), shearing to obtain a mixed solution, and adding an initiator in a nitrogen environment to perform a reaction; after the reaction is completed, the component A is obtained.
Preferably, when the carboxyl monomer in the step (1) is maleic anhydride, the carboxyl monomer is dissolved by stirring at 50 ℃.
Preferably, the pH of the system is adjusted in step (1) using an alkaline solution; the mass fraction of the alkali solution is 20-30%, and the alkali is NaOH or KOH.
Preferably, the shearing in the step (3) is shearing for 20-30 min under the condition of 1500-2000 r/min by using a shearing machine.
Preferably, the initiator in the step (3) is added into the system in the form of an aqueous initiator solution, and the mass fraction of the aqueous initiator solution is 30-50%.
Preferably, the temperature of the reaction in the step (3) is 70-80 ℃; the reaction time is 4-6 hours.
According to a preferred embodiment of the invention, the fluorine-containing compound is perfluorooctyl sulfonyl fluoride or trifluoropropyl methyl cyclotrisiloxane.
According to the invention, the silane material is one or more than two of gamma-aminopropyl trimethoxysilane (KH 540), gamma-aminopropyl triethoxysilane (KH 550), di (3-trimethoxysilylpropyl) amine, 3-aminopropyl methyl dimethoxy silane and gamma-glycidoxypropyl trimethoxysilane (KH 560).
Preferably, according to the invention, the catalyst is KOH, naOH or LiOH.
According to the invention, the component B is preferably prepared according to the following method: mixing fluorine-containing compound, silane material and triethylamine, heating to reaction temperature, adding catalyst, and then carrying out heat preservation reaction; after the reaction is completed, a transparent viscous liquid is obtained, namely the component B.
Preferably, the reaction temperature is 120-140 ℃; the time of the heat preservation reaction is 4-6 h.
According to the invention, the preparation method of the high-temperature-resistant quick drilling agent comprises the following steps:
mixing the component A, the component B, the white oil and the surfactant, and uniformly stirring to obtain the high-temperature-resistant quick drilling agent; the stirring speed is 3000-4000 r/min, and the stirring time is 1-2 h.
The high-temperature resistant quick drilling agent is uniformly dispersed slightly viscous liquid.
According to the invention, the application of the high-temperature-resistant quick drilling agent in water-based drilling fluid; preferably, the addition amount of the high-temperature resistant quick drilling agent in the water-based drilling fluid is 10-30 g/L.
The invention has the technical characteristics and beneficial effects that:
1. the quick drilling agent disclosed by the invention comprises a component A, a component B, white oil and a surfactant in a specific proportion. The component A contains an organic quaternary ammonium salt cationic monomer, a sulfonic acid group, a carboxyl group and the like, has good adsorption inhibition effect on clay, changes the wettability of the clay surface, contains ester groups and has certain lubricity; the component B can adsorb steel to change the surface wettability thereof, has a certain wetting reversal effect on rock, and the component A and the component B with specific proportions change the friction type and strengthen the lubrication effect by changing the wettability of the rock and the surface of the steel, so that the drilling rate is effectively reduced; meanwhile, the special amount of white oil is added, the white oil mainly plays a role in auxiliary lubrication, and meanwhile, the white oil is added into the drilling fluid, and under the synergistic effect of the white oil and the surfactant, an emulsion is formed in the drilling fluid, so that the temperature resistance of a system can be remarkably improved; the addition of the specific surfactant of the invention has a certain inhibition effect while being in synergy with white oil, is beneficial to the thermodynamic stability of the quick drilling agent and the dispersion and emulsion formation in the water-based drilling fluid to improve the temperature resistance of a system, and the surfactant also has a certain lubricity, can realize wetting inversion, changes the friction type between contact surfaces and improves the lubricating effect.
2. The quick drilling agent has good lubricating property, can reduce torque, mainly because the component A and the component B change the surface properties of rock and drilling tools and change friction types, and the component A contains esters and white oil which play a main role in improving the lubricating property, so that the lubricating property of drilling fluid can be improved, the adhesion of the drilling fluid can be reduced, and the torque can be reduced.
3. The cationic ammonium surfactant in the quick drilling agent and the organic quaternary ammonium salt contained in the component A have good inhibition effect, can effectively inhibit hydration expansion of rock, and prevent coalescence and adsorption of solid phase particles in drilling fluid.
4. The quick drilling agent component A is preferentially adsorbed on the surface of rock through electrostatic action and hydrogen bonding action, so that wettability is changed; the component B has the function of wetting and reversing both the metal and the rock, so that the contact surface is changed, and the lubricity is enhanced. Therefore, the quick drilling agent can be effectively adsorbed on the surfaces of a metal drilling tool and stratum rock, has an excellent wetting reversal effect, changes the surface properties of the drilling tool and rock fragments, enhances the lubricity, and plays a role in preventing the bit from being balled and improving the mechanical drilling speed.
5. The quick drilling agent has good temperature resistance, so that the quick drilling agent has good temperature resistance, good compatibility with conventional drilling fluid, small influence on rheological property of the drilling fluid and certain fluid loss reducing effect.
6. The component A and the component B in the quick drilling agent change the wettability of the rock surface, so that the water in the drilling fluid can more easily permeate into rock gaps under the action of pressure, the hydration of the rock is inhibited, the quick permeation is realized, the strength of the rock is reduced, and the drill bit is convenient to break the rock; the quick penetration effect is achieved, the quick penetration into the rock microcracks can be achieved, and the quick rock breaking of the drill bit is facilitated; the method can effectively reduce the hold-down effect, is favorable for timely flowback of rock fragments, and keeps the bottom of the well clean, thereby improving the drilling speed.
7. The white oil can obviously enhance the temperature resistance (stable emulsion is formed) and lubricity of the quick drilling agent, plays a certain role in dilution in the preparation process of the quick drilling agent, and prevents the quick drilling agent from being too viscous and inconvenient to use; the surfactant is an essential component for forming emulsion, plays an important role in maintaining the thermodynamic stability of the quick drilling agent, and can promote the dispersion of white oil in drilling fluid, so that the good effect can be achieved by maintaining the uniformity of the system. The components with specific proportions in the quick drilling agent have synergistic effect, so that the quick drilling agent can remarkably improve the lubricating property of drilling fluid, inhibit the hydration expansion and coalescence of rock, and has excellent temperature resistance; compared with the drilling fluid without the quick drilling agent and other common quick drilling agents, the drilling fluid with the quick drilling agent can obviously improve the drilling speed, and the performance of the quick drilling agent can be reduced due to the fact that the proportion of each component is too high or too low.
Detailed Description
The invention is further illustrated, but not limited, by the following examples.
Meanwhile, the experimental methods described in the following examples are all conventional methods unless otherwise specified; the reagents, materials, and apparatus, unless otherwise specified, are all commercially available.
The white oil used in the examples is 3# white oil.
Example 1
A preparation method of a high-temperature-resistant quick drilling agent comprises the following steps:
1. preparation of component A:
(1) Adding 5g of sodium p-styrenesulfonate, 3g of acrylic acid and 1g of dimethyl diallyl ammonium chloride into 70g of deionized water, adjusting the pH of the system to 7 by using a 20% mass fraction aqueous solution of NaOH, adding 8g of Tween80, and stirring by using a magnetic stirrer to fully dissolve the materials to obtain a water phase;
(2) 2g of vinyl acetate and 4g of isopropyl alcohol were added to a beaker, 8g of Span80 was added, and the mixture was sufficiently stirred using a magnetic stirrer to obtain an organic phase;
(3) Mixing the water phase in the step (1) and the organic phase in the step (2), shearing for 30 minutes under the condition of 2000r/min by using a shearing machine, and transferring to a reaction device;
(4) Adding 0.3g of initiator ammonium persulfate into water to prepare an initiator solution with the mass fraction of 50%, adding the initiator solution into a reaction device in a nitrogen environment, and reacting for 4 hours at the temperature of 75 ℃, wherein the stirring speed is 300r/min in the reaction process; and after the reaction is finished, naturally cooling to room temperature to obtain the component A.
2. Preparation of component B:
10g of perfluorooctyl sulfonyl fluoride, 20g of gamma-aminopropyl triethoxysilane (KH 550) and 5g of triethylamine are added into a four-neck flask, and under the heating condition of an oil bath, the condensation reflux is started, and the stirring is continued; when the temperature reaches 120 ℃, 0.06g KOH is added, the mixture reacts for 6 hours at 120 ℃ to obtain transparent viscous liquid, and the transparent viscous liquid is naturally cooled to room temperature to obtain the component B.
3. Preparing a quick drilling agent:
10g of component A, 6g of component B, 6g of white oil, 1g of dodecyl trimethyl ammonium chloride and 1g of dodecylphenol polyoxyethylene ether (OP-10) are added into a high-stirring container, and are stirred at a high speed for 1h by a high-speed stirrer at a stirring speed of 3000r/min, so that the components are fully mixed to form uniformly dispersed slightly viscous liquid, and the high-temperature-resistant quick drilling agent is obtained.
Example 2
A preparation method of a high-temperature-resistant quick drilling agent comprises the following steps:
1. preparation of component A:
(1) Adding 5g of sodium p-styrenesulfonate, 3g of maleic anhydride and 1g of dimethyl diallyl ammonium chloride into 70g of deionized water, adjusting the pH of the system to 7 by using a 20% by mass NaOH aqueous solution, adding 8g of Tween80, stirring by using a magnetic stirrer, and heating in a water-proof manner at 50 ℃ to fully dissolve the Tween80 to obtain a water phase;
(2) 2g of dimethylaminoethyl acrylate and 4g of isopropanol were added to a beaker, 8g of Span80 was added, and the mixture was sufficiently stirred using a magnetic stirrer to obtain an organic phase;
(3) Mixing the water phase in the step (1) and the organic phase in the step (2), shearing for 30 minutes under the condition of 2000r/min by using a shearing machine, and transferring to a reaction device;
(4) Adding 0.3g of initiator ammonium persulfate into water to prepare an initiator solution with the mass fraction of 50%, adding the initiator solution into a reaction device in a nitrogen environment, and reacting for 4 hours at 80 ℃ with the stirring speed of 300r/min in the reaction process; and after the reaction is finished, naturally cooling to room temperature to obtain the component A.
2. Preparation of component B:
10g of trifluoro propyl methyl cyclotrisiloxane, 20g of gamma-aminopropyl triethoxysilane (KH 550) and 5g of triethylamine are added into a four-neck flask, and under the condition of heating in an oil bath, condensation reflux is started, and stirring is continued; when the temperature reaches 120 ℃, 0.06g of KOH is added, the mixture reacts for 6 hours at 120 ℃ to obtain transparent viscous liquid, and the transparent viscous liquid is naturally cooled to room temperature to obtain the component B.
3. Preparing a quick drilling agent:
10g of component A, 6g of component B, 6g of white oil, 1g of dodecyl trimethyl ammonium chloride and 1g of dodecylphenol polyoxyethylene ether (OP-10) are added into a high-stirring container, and are stirred at a high speed for 1h by a high-speed stirrer at a stirring speed of 3000r/min, so that the components are fully mixed to form uniformly dispersed slightly viscous liquid, and the high-temperature-resistant quick drilling agent is obtained.
Example 3
A preparation method of a high-temperature-resistant quick drilling agent comprises the following steps:
1. preparation of component A:
(1) Adding 5g of sodium p-styrenesulfonate, 3g of acrylic acid and 1g of dimethyl diallyl ammonium chloride into 70g of deionized water, adjusting the pH of the system to 7 by using a 20% mass fraction aqueous solution of NaOH, adding 8g of Tween80, and stirring by using a magnetic stirrer to fully dissolve the materials to obtain a water phase;
(2) 2g of dimethylaminoethyl acrylate and 4g of isopropanol were added to a beaker, 8g of Span80 was added, and the mixture was sufficiently stirred using a magnetic stirrer to obtain an organic phase;
(3) Mixing the water phase in the step (1) and the organic phase in the step (2), shearing for 30 minutes under the condition of 2000r/min by using a shearing machine, and transferring to a reaction device;
(4) Adding 0.3g of initiator ammonium persulfate into water to prepare an initiator solution with the mass fraction of 50%, adding the initiator solution into a reaction device in a nitrogen environment, and reacting for 4 hours at the temperature of 75 ℃, wherein the stirring speed is 300r/min in the reaction process; and after the reaction is finished, naturally cooling to room temperature to obtain the component A.
2. Preparation of component B:
10g of trifluoro propyl methyl cyclotrisiloxane, 20g of gamma-aminopropyl triethoxysilane (KH 550) and 5g of triethylamine are added into a four-neck flask, and under the condition of heating in an oil bath, condensation reflux is started, and stirring is continued; when the temperature reaches 120 ℃, 0.06g of KOH is added, the mixture reacts for 6 hours at 120 ℃ to obtain transparent viscous liquid, and the transparent viscous liquid is naturally cooled to room temperature to obtain the component B.
3. Preparing a quick drilling agent:
10g of component A, 6g of component B, 6g of white oil, 1g of dodecyl trimethyl ammonium chloride and 1g of dodecylphenol polyoxyethylene ether (OP-10) are added into a high-stirring container, and are stirred at a high speed for 1h by a high-speed stirrer at a stirring speed of 3000r/min, so that the components are fully mixed to form uniformly dispersed slightly viscous liquid, and the high-temperature-resistant quick drilling agent is obtained.
Comparative example 1
A method for preparing a high temperature resistant quick drilling agent is as described in example 1, except that: component A is not added.
The preparation method comprises the following steps:
1. component B was prepared as in example 1.
2. Preparing a quick drilling agent:
adding 6g of component B, 6g of white oil, 1g of dodecyl trimethyl ammonium chloride and 1g of dodecylphenol polyoxyethylene ether (OP-10) into a high-stirring container, stirring at a high speed of 3000r/min on a high-speed stirrer for 1h, and fully mixing to obtain uniformly dispersed slightly viscous liquid, thus obtaining the high-temperature-resistant quick drilling agent.
Comparative example 2
A method for preparing a high temperature resistant quick drilling agent is as described in example 2, except that: component B was not added.
The preparation method comprises the following steps:
1. component A was prepared as in example 2;
2. preparing a quick drilling agent: 10g of component A, 6g of white oil, 1g of dodecyl trimethyl ammonium chloride and 1g of dodecylphenol polyoxyethylene ether (OP-10) are added into a high-stirring container, and are stirred at a high speed for 1h on a high-speed stirrer at a stirring speed of 3000r/min, so that the components A, 6g of white oil, 1g of dodecyl trimethyl ammonium chloride and 1g of dodecylphenol polyoxyethylene ether are fully mixed to form a uniformly dispersed slightly viscous liquid, and the high-temperature-resistant quick drilling agent is obtained.
Comparative example 3
A method for preparing a high temperature resistant quick drilling agent is as described in example 1, except that: no white oil was added.
The preparation method comprises the following steps:
1. component A was prepared as in example 1;
2. component B was prepared as in example 1;
3. preparing a quick drilling agent: 10g of component A, 6g of component B, 1g of dodecyl trimethyl ammonium chloride and 1g of dodecylphenol polyoxyethylene ether (OP-10) are added into a high-stirring container, and are stirred at a high speed for 1h on a high-speed stirrer at a stirring speed of 3000r/min, so that the components A, B and OP-10 are fully mixed to form uniformly dispersed slightly viscous liquid, and the high-temperature-resistant quick drilling agent is obtained.
Comparative example 4
A method for preparing a high temperature resistant quick drilling agent is as described in example 2, except that: no surfactant was added.
The preparation method comprises the following steps:
1. component A was prepared as in example 2;
2. component B was prepared as in example 2;
2. preparing a quick drilling agent: adding 10g of component A, 6g of component B and 6g of white oil into a high-speed stirring container, stirring at a high speed of 3000r/min for 1h on a high-speed stirrer, and fully mixing to obtain slightly viscous liquid to obtain the high-temperature-resistant quick drilling agent.
Comparative example 5
The drilling fluid quick drilling agent accelerator is a similar product, and a commercially available drilling fluid quick drilling agent Q-DRILL-1 is selected for comparison experiments.
Test examples
The quick drilling agents prepared in examples and comparative examples were evaluated as follows:
1. contact angle measurement
Distilled water was used to prepare a 2% mass fraction quick drilling agent solution. And preparing a plurality of core pieces with the thickness of 6mm by using a core cutter, polishing the surface to be smooth, and preparing a plurality of N80 steel pieces. And soaking the core piece and the steel sheet in a quick drilling agent solution for 24 hours, taking out, and drying for 4 hours at 105+/-2 ℃. Approximately 5 mu L of distilled water was dropped on the core piece and the steel piece by using an optical contact angle tester, and after standing for 5min, the contact angle of distilled water on the core piece and the steel piece was measured, and the contact angle of the untreated core piece and the steel piece was measured as a comparison. The experimental temperature was room temperature. The contact angle measurement results are shown in table 1.
TABLE 1 contact angle measurement results
| Sample of | Contact angle of steel sheet/° | Core plate contact angle/° |
| Untreated process | 56.3 | 12.5 |
| 2% example 1 | 137.5 | 112.6 |
| 2% example 2 | 136.3 | 111.8 |
| 2% example 3 | 135.4 | 111.6 |
| 2% comparative example 1 | 122.7 | 93.2 |
| 2% comparative example 2 | 118.8 | 102.5 |
| 2% comparative example 3 | 117.5 | 107.6 |
| 2% comparative example 4 | 115.6 | 105.4 |
| 2% comparative example 5 | 120.5 | 98.4 |
From table 1, it can be seen that the contact angle of the steel sheet and the core sheet is obviously changed after the steel sheet and the core sheet are soaked in the sample, and the wettability of distilled water with the steel sheet and the core sheet is changed from hydrophilicity to wetting reversal. The example samples have a larger contact angle and a more pronounced wetting reversal effect than the comparative examples. The absence of component a in comparative example 1 resulted in a core piece having a significantly lower contact angle with water than in the examples, indicating that component a has a promoting effect on the wetting reversal of the rock. The absence of component B in comparative example 2 results in a substantially lower contact angle of the steel sheet with water than in the examples, indicating that component B has a promoting effect on the reversal of wetting of the steel sheet. In comparative example 3, the contact angle between the steel sheet and the core sheet and water is obviously reduced due to the fact that white oil is not added, but the influence on the steel sheet is larger, and the fact that the white oil has a promotion effect on the wetting reversal of the steel sheet and the core sheet has amphipathy is indicated, so that the influence on the contact angle between the core sheet and water due to the fact that the white oil is not added is smaller. The comparative example 4, without the addition of surfactant, is prone to delamination of the fast drilling agent solution, affecting the adsorption of the fast drilling agent components on the core and steel sheet surfaces, resulting in contact angle measurements much smaller than the example samples. Commercial product comparative example 5 has similar effects to comparative examples 1 and 2. The comparative example still has good effect compared with untreated steel sheet and core sheet. The contact angle measurement results show that the surface properties of the steel sheet (simulated drilling tool) and the rock core sheet (stratum rock) can be changed by the sample in the embodiment, so that the friction between the original drilling tool and the hydrophilic surface of drill cuttings is converted into the friction between the lipophilic surfaces, the lubrication effect of drilling fluid is improved, the friction coefficient between the well wall and the drilling tool is reduced, and the torque is reduced; meanwhile, the friction coefficient between the drill bit and the drill cuttings is reduced, so that the drilling efficiency of the drill bit is improved, and the drilling speed is improved.
2. Influence of fast drilling agents on drilling fluid rheology and fluid loss
Preparing base slurry: 400mL of water was added to a high stirring cup at room temperature, 4% (16.0 g) bentonite, 0.2% (0.8 g) Na was slowly added while stirring 2 CO 3 . Stirring with high-speed stirrer (8000 r/min) for 20min, and sealing and maintaining at normal temperature 25+ -3deg.C for 24 hr.
Preparing drilling fluid samples: 400mL of the base slurry was taken, 8g of the sample was added, and the mixture was stirred at 3000r/min for 20min.
Aging treatment of drilling fluid: and (3) aging the drilling fluid sample by using a roller heating furnace, wherein the treatment temperature is 180 ℃ and the treatment time is 16 hours.
Performance test after aging: after the aging process, the mixture is cured,the formulated drilling fluid was tested for rheological parameters (apparent viscosity, plastic viscosity) and API fluid loss according to the American Petroleum Institute (API) standard (API RP 13B-1,2009) with stirring at 3000r/min for 20min. The fluid loss V at 7.5min and 15min was recorded during the API fluid loss measurement 7.5 And V 15 And the initial fluid loss of the drilling fluid is calculated according to the following formula.
Apparent Viscosity (AV) =0.5×Φ600 (1)
Plastic Viscosity (PV) =Φ600- Φ300 (2)
In the formula (3), V 7.5 The filtration loss at 7.5min, mL; v (V) 15 The filtration loss is 15min, mL; c is the slope of the straight line; vsp is primary fluid loss, mL.
The results of the drilling fluid rheology and fluid loss are shown in Table 2.
TABLE 2 Effect of fast drilling agents on drilling fluid Performance
As can be seen from Table 2, the viscosity of the drilling fluid is slightly increased after the samples of the examples and the comparative examples are added into the base slurry and aged at 180 ℃, so that the rheological property of the base slurry is not greatly influenced, but the fluid loss is obviously reduced, and the drilling fluid is not adversely influenced by the samples of the examples and the samples of the comparative examples. The primary filtration loss of the base slurry is 0, and the API filtration loss is larger. After the sample of the embodiment is added, the initial fluid loss of the drilling fluid is obviously increased and is about 1.5mL, but the API fluid loss is obviously reduced. After the comparative sample is added, the initial fluid loss of the drilling fluid is slightly increased, and the API fluid loss is obviously reduced compared with the base slurry at about 0.4 mL. The addition of comparative example 3 and comparative example 4 to the base slurry did not form a certain emulsion structure, resulting in insufficient temperature resistance, lower viscosity after aging, and larger fluid loss. The quick drilling agent sample prepared by the embodiment can be added into the base slurry to achieve good promoting effect, and the drilling fluid has certain primary filtration loss, so that the drilling fluid has good permeability. If the drilling fluid filtrate has good permeability, the drilling fluid filtrate can quickly permeate into the microcracks of the bottom hole rock at the moment when the drill bit breaks the rock, thereby reducing or reducing the hold-down effect and being beneficial to timely returning out drill cuttings at the bottom hole; in addition, because the drilling fluid filtrate can quickly permeate into the stratum, the rock strength can be reduced to a certain extent, and the rock breaking of the drill bit is facilitated, so that the drilling rate is improved. In contrast, the samples of the examples were of greater initial fluid loss and had better permeability.
3. Influence of quick drilling agent on lubricity and adhesion coefficient of drilling fluid
After the drilling fluid in experiment 2 was aged, the drilling fluid was cooled to room temperature to measure the reduction rate of the lubrication coefficient and the adhesion coefficient. According to Q/SY17088-2016 technical Specification for liquid lubricants for drilling fluids, an EP-B extreme pressure lubrication instrument is used for testing the extreme pressure lubrication coefficient. The operation steps are as follows: first, the lubricator is checked with distilled water, and the torque reading of distilled water is tested, ensuring that the torque reading of distilled water is between 32-38. And (3) replacing distilled water with the drilling fluid to be tested, and reading the torque of the drilling fluid to be tested. The machine was checked with distilled water before each torque test. The lubrication coefficient decrease rate η is calculated as follows.
In the formula (4), eta-lubrication coefficient reduction rate,%;-extreme pressure lubrication coefficient of the base stock; />Extreme pressure lubrication coefficient of drilling fluid.
According to Q/SY17088-2016 technical Specification for liquid lubricants for drilling fluids, the adhesion coefficient was determined by means of a JK-type stuck solution analyzer. The test condition is that the pressure difference is 3.5MPa, the filtration time is 30min, and the adhesion coefficients of 5min,10min,15min,30min and 45min are respectively read and calculated after the adhesion disc is adhered to the mud cake. The adhesion coefficient decrease rate K was calculated as follows.
In formula (5): k-adhesion coefficient reduction rate,%; mu (mu) 0 -an adhesion coefficient of the base slurry for 45 min; mu (mu) 1 -adhesion coefficient of drilling fluid sample for 45 min.
The results of the drilling fluid lubricity measurements are shown in Table 3.
Table 3 results of drilling fluid lubricity test
| Sample of | Coefficient of lubrication reduction (%) | Adhesion coefficient reduction Rate (%) |
| Base slurry | -- | -- |
| Base stock +2% example 1 | 93.2 | 68.5 |
| Base stock +2% example 2 | 91.7 | 67.3 |
| Base stock +2% example 3 | 92.5 | 68.5 |
| Base stock +2% comparative example 1 | 88.6 | 65.3 |
| Base stock +2% comparative example 2 | 85.3 | 61.7 |
| Base stock +2% comparative example 3 | 84.5 | 62.5 |
| Base stock +2% comparative example 4 | 85.2 | 61.5 |
| Base stock +2% comparative example 5 | 87.4 | 63.8 |
It can be seen from Table 3 that the sample of the example still has excellent lubricating property after aging at 180℃when added to the base stock, the reduction rate of the lubricating coefficient is kept at 90% or more, and the reduction rate of the sticking coefficient is kept at 67% or more. The comparative example 1 does not contain the component A, the lubricity is reduced, and the extreme pressure lubricating performance is reduced, which shows that the component A has a certain influence on improving the extreme pressure lubricating performance of the drilling fluid, but the reduction rate of the lubricating coefficient is still more than 85%, the reduction rate of the adhesion coefficient is more than 65%, and the influence of the component A on the lubricating performance of the sample is smaller. The comparative example 2 does not contain the component B, the lubrication performance is obviously reduced, which indicates that the component B has a larger influence on the lubrication performance of the sample, but still maintains the better lubrication performance of the drilling fluid. Comparative examples 1 and 2 have comparable lubricating properties as compared to the commercially available sample, comparative example 5. Comparative example 3 has no white oil, resulting in a decrease in its temperature resistance, and the quick drilling agent is decomposed at high temperature, resulting in a significant decrease in lubricity. In comparative example 4, no surfactant was added, resulting in delamination of the drilling fluid after high temperature aging, oil bloom floating on the surface, which had relatively little effect on the measurement result of the reduction rate of the polar pressure lubrication coefficient, but resulted in an increase in the adhesion coefficient of the mudcake, a decrease in the adhesion coefficient reduction rate, and a decrease in lubricity. But the samples of the examples all have more excellent lubricating properties. After the lubricating performance of the drilling fluid is improved, the torque for breaking the rock can be reduced, and the friction between a drilling tool and a well wall and between a drill bit and rock fragments can be reduced; the drill cuttings and the drill bit and the drill tool and the well wall are adhered, the probability of the occurrence of balling of the drill bit and the drill tool can be effectively reduced, ineffective grinding of the drill bit is reduced, cleaning of the bottom of the well is facilitated, and the drilling efficiency of the drill bit is improved.
4. Rock debris rolling recovery experiment
And (3) weighing rock fragments with 6-10 meshes, putting 20g of rock fragments into an aging tank containing 400mL of drilling fluid (the preparation of the drilling fluid is the same as the influence of the experiment 2 quick drilling agent on the rheological property and the filtration loss of the drilling fluid), rolling for 16 hours at the aging temperature of 180 ℃, and taking out after cooling. Pouring the rock sample in the tank into a 40-mesh sieve, cleaning the rock sample in water, drying the residual rock sample in the sieve for 4 hours at 105 ℃, and weighing the mass of the rock sample. Recovery was calculated as follows.
R＝M/20×100％(6)
In the formula (6), R-recovery rate,%; dry weight of rock sample after M-40 mesh sieve, g.
The results of the rock debris rolling recovery rate experiments are shown in Table 4.
TABLE 4 rock debris rolling recovery
It can be seen from table 4 that the fast drilling agent samples all have higher rock debris rolling recovery rates, and the recovery rates are all over 80%. Whereas the rock debris recovery rate of the example sample exceeds 85%, the rock debris recovery rate of the comparative example sample is not much different from that of the comparative example sample. Comparative example 1, comparative example 2, comparative example 3, comparative example 4 showed little difference in the recovery rate of the cuttings, indicating that each component had an accelerating effect on the improvement of the recovery rate of the cuttings. The high rock chip recovery rate indicates that the drilling fluid has stronger inhibition property, and the quick drilling agent is adsorbed on the surface of rock to inhibit the hydration expansion of the rock, so that on one hand, the cutting and crushing of the drill bit to the rock at the bottom of the well are facilitated, on the other hand, the drilling fluid is facilitated to timely carry the crushed rock chips to the ground, and solid control equipment is utilized to clean the crushed rock chips, so that the stability of the performance of the drilling fluid is maintained, the repeated crushing of drill chips is prevented, the cleanliness of the bottom of the well is maintained, the occurrence of mud is reduced, the rock breaking efficiency of the drill bit is further improved, and the mechanical drilling speed is improved.
5. Adhesion coalescence experiments
A plurality of N80 steel pipes are prepared, washed by ethanol solution, put into a baking oven at 105 ℃, dried for 4 hours, cooled and weighed for standby. The drilling fluid sample prepared according to the method in experiment 2 is poured into an aging tank, and 20g of 6-10 mesh rock fragments and the steel tube with corresponding weighing are added into the aging tank. And (3) aging for 16 hours at 180 ℃, taking out the steel pipe, drying and weighing to obtain the weight of the adhesion solid phase. The results of the adhesion test are shown in Table 5.
TABLE 5 adhesion coalescence test results
| Sample of | Adhesion weight/g |
| Base slurry | 14.72 |
| Base stock +2% example 1 | 6.85 |
| Base stock +2% example 2 | 7.52 |
| Base stock +2% example 3 | 7.33 |
| Base stock +2% comparative example 1 | 8.25 |
| Base stock +2% comparative example 2 | 8.81 |
| Base stock +2% comparative example 3 | 9.05 |
| Base stock +2% comparative example 4 | 8.76 |
| Base stock +2% comparative example 5 | 10.36 |
As can be seen more intuitively from the adhesion coalescence experiments in table 5, the solid phase in the drilling fluid is easily adsorbed on the surface of the steel, and the drill cuttings carried by the steel are reduced by nearly half in the examples compared with the base slurry; comparative examples 1,2, 3 and 4 also have a more pronounced effect and are all superior to the commercial fast drilling agent comparative example 5. The adsorption of the solid phase on the steel surface is analogous to the adhesion of broken cuttings on the surface of the drill during drilling. The quick drilling agent reduces the adsorption of the rock chips on the surface of the drilling tool by changing the wettability of the drilling tool and the rock chip surface; by improving the lubricity of the drilling fluid and inhibiting the hydration expansion of the rock, the adhesion performance of drill cuttings is reduced. The drill cuttings are not easy to adhere to the steel surface of the drilling tool, so that on one hand, the occurrence of the balling condition is reduced, on the other hand, timely flowback and removal of rock cuttings are facilitated, and the drill cuttings are combined to act together, so that the drilling efficiency of the drilling tool is improved, and the mechanical drilling rate is improved.
The high-temperature-resistant quick drilling agent developed by the invention has good action and effect and can obviously improve the mechanical drilling rate. The quick drilling agent has excellent temperature resistance, good compatibility with drilling fluid and small influence on rheological property of the drilling fluid. The quick drilling agent can be effectively adsorbed on the surfaces of a metal drilling tool and stratum rock, has an excellent wetting reversal effect, changes the surface properties of the drilling tool and rock fragments, converts the friction between the drilling tool and the hydrophilic surface of the drilling tool into the friction between the lipophilic surfaces, reduces the friction coefficient, reduces the torque and improves the lubrication effect of drilling fluid; meanwhile, the anti-balling agent has good inhibition effect, can effectively inhibit hydration expansion of rock, prevents solid phase particles in drilling fluid from being adhered and adsorbed on the surface of a drilling tool, and plays a role in preventing balling of a drill bit, reducing ineffective grinding and improving the mechanical drilling rate; the drill bit has the advantages of being good for quick rock breaking, effectively reducing the hold-down effect, being good for timely flowback of rock scraps, keeping the bottom of the well clean, and remarkably improving the mechanical drilling speed under the combined action of multiple aspects.
Claims (9)
1. The high-temperature-resistant quick drilling agent is characterized by comprising the following raw materials in parts by mass: 4-5 parts of a component A, 2-3 parts of a component B, 2-3 parts of white oil and 0.5-1 part of a surfactant;
the component A comprises the following raw materials in parts by mass: 3-5 parts of sulfonic acid monomer, 3-5 parts of acrylic acid or maleic anhydride, 1-2 parts of ester monomer, 0.5-1 part of organic quaternary ammonium salt monomer, 50-70 parts of water, 3-5 parts of isopropanol, 6-10 parts of hydrophilic emulsifier, 6-10 parts of lipophilic emulsifier and 0.1-0.3 part of initiator; the sulfonic acid monomer is sodium p-styrene sulfonate, sodium allylsulfonate or 2-acrylamide-2-methylpropanesulfonic acid; the ester monomer is one or the combination of more than two of dimethylaminoethyl acrylate, vinyl acetate and dimethylaminoethyl methacrylate; the organic quaternary ammonium salt monomer is one or the combination of more than two of methacryloyloxyethyl trimethyl ammonium chloride, 3-methacryloyloxyamino propyl trimethyl ammonium chloride, acryloyloxyethyl trimethyl ammonium chloride and dimethyl diallyl ammonium chloride;
the component B comprises the following raw materials in parts by mass: 1 part of fluorine-containing compound, 2-3 parts of silane materials, 0.5-1 part of triethylamine and 0.005-0.02 part of catalyst; the fluorine-containing compound is perfluorooctyl sulfonyl fluoride or trifluoropropyl methyl cyclotrisiloxane; the silane material is one or more than two of gamma-aminopropyl trimethoxy silane, gamma-aminopropyl triethoxy silane, di (3-trimethoxy silica-based propyl) amine, 3-aminopropyl methyl dimethoxy silane and gamma-glycidol ether oxypropyl trimethoxy silane; the catalyst is KOH, naOH or LiOH;
the surfactant is a combination of cationic surfactant and nonionic surfactant, wherein the mass ratio of the cationic surfactant to the nonionic surfactant is 1:1; the cationic surfactant is one or more than two of dodecyl trimethyl ammonium chloride, tetradecyl trimethyl ammonium chloride, hexadecyl trimethyl ammonium chloride, octadecyl trimethyl ammonium chloride, dodecyl trimethyl ammonium bromide, tetradecyl trimethyl ammonium bromide, hexadecyl trimethyl ammonium bromide and octadecyl trimethyl ammonium bromide; the nonionic surfactant is one or more of dodecylphenol polyoxyethylene ether, lauroyl diethanolamine, polyoxyethylene octadecylamine and cocoamine polyoxyethylene ether.
2. The high temperature resistant quick drilling agent according to claim 1, wherein the white oil is a 3# white oil, a 5# white oil, a 7# white oil, or a 10# white oil.
3. The high temperature resistant quick drilling agent according to claim 1, wherein the hydrophilic emulsifier is Tween80, tween60 or Tween20; the lipophilic emulsifier is Span80 or Span60; the initiator is ammonium persulfate, potassium persulfate, dibenzoyl peroxide or tert-butyl hydroperoxide.
4. The high temperature resistant quick drilling agent according to claim 1, wherein the component A is prepared by the following method:
(1) Adding a sulfonic acid monomer, acrylic acid or maleic anhydride and an organic quaternary ammonium salt monomer into water, adjusting the pH of the system to 6-9, adding a hydrophilic emulsifier, and stirring to dissolve the hydrophilic emulsifier to obtain a water phase;
(2) Mixing an ester monomer with isopropanol, adding a lipophilic emulsifier, and uniformly mixing to obtain an organic phase;
(3) Mixing the water phase in the step (1) and the organic phase in the step (2), shearing to obtain a mixed solution, and adding an initiator in a nitrogen environment to perform a reaction; after the reaction is completed, the component A is obtained.
5. The high temperature resistant quick drilling agent according to claim 4, wherein when maleic anhydride is added in the step (1), the maleic anhydride is dissolved by stirring at 50 ℃;
adjusting the pH of the system in step (1) using an alkaline solution; the mass fraction of the alkali solution is 20-30%, and the alkali is NaOH or KOH;
in the step (3), shearing is carried out for 20-30 min under the condition of 1500-2000 r/min by using a shearing machine;
the initiator in the step (3) is added into the system in the form of an initiator aqueous solution, and the mass fraction of the initiator aqueous solution is 30-50%;
the temperature of the reaction in the step (3) is 70-80 ℃; the reaction time is 4-6 hours.
6. The high temperature resistant quick drilling agent according to claim 1, wherein the component B is prepared according to the following method: mixing fluorine-containing compound, silane material and triethylamine, heating to reaction temperature, adding catalyst, and then carrying out heat preservation reaction; after the reaction is completed, a transparent viscous liquid is obtained, namely the component B.
7. The high temperature resistant quick drilling agent according to claim 6, wherein the reaction temperature is 120-140 ℃; the time of the heat preservation reaction is 4-6 hours.
8. A method of preparing the high temperature resistant quick drilling agent as claimed in any one of claims 1 to 7, comprising the steps of:
mixing the component A, the component B, the white oil and the surfactant, and uniformly stirring to obtain the high-temperature-resistant quick drilling agent; the stirring speed is 3000-4000 r/min, and the stirring time is 1-2 h.
9. The application of the high-temperature-resistant quick drilling agent in water-based drilling fluid, wherein the addition amount of the high-temperature-resistant quick drilling agent in the water-based drilling fluid is 10-30 g/L.
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