CN116854739B - Emulsifying agent for preparing filtrate reducer, composition, filtrate reducer and preparation method of filtrate reducer - Google Patents
Emulsifying agent for preparing filtrate reducer, composition, filtrate reducer and preparation method of filtrate reducer Download PDFInfo
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- CN116854739B CN116854739B CN202310825518.8A CN202310825518A CN116854739B CN 116854739 B CN116854739 B CN 116854739B CN 202310825518 A CN202310825518 A CN 202310825518A CN 116854739 B CN116854739 B CN 116854739B
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- 239000003995 emulsifying agent Substances 0.000 title claims abstract description 63
- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 61
- 239000000706 filtrate Substances 0.000 title claims abstract description 29
- 239000000203 mixture Substances 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000000654 additive Substances 0.000 claims abstract description 34
- 230000000996 additive effect Effects 0.000 claims abstract description 33
- 239000002994 raw material Substances 0.000 claims abstract description 14
- RSRFURJMCNJVOW-UHFFFAOYSA-N (4-hydroxyphenyl)arsonic acid Chemical compound OC1=CC=C([As](O)(O)=O)C=C1 RSRFURJMCNJVOW-UHFFFAOYSA-N 0.000 claims abstract description 13
- OYHQOLUKZRVURQ-HZJYTTRNSA-N Linoleic acid Chemical compound CCCCC\C=C/C\C=C/CCCCCCCC(O)=O OYHQOLUKZRVURQ-HZJYTTRNSA-N 0.000 claims abstract description 13
- LHIJANUOQQMGNT-UHFFFAOYSA-N aminoethylethanolamine Chemical compound NCCNCCO LHIJANUOQQMGNT-UHFFFAOYSA-N 0.000 claims abstract description 13
- OYHQOLUKZRVURQ-IXWMQOLASA-N linoleic acid Natural products CCCCC\C=C/C\C=C\CCCCCCCC(O)=O OYHQOLUKZRVURQ-IXWMQOLASA-N 0.000 claims abstract description 13
- 235000020778 linoleic acid Nutrition 0.000 claims abstract description 13
- 239000012071 phase Substances 0.000 claims description 68
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 51
- 239000003921 oil Substances 0.000 claims description 49
- 239000000178 monomer Substances 0.000 claims description 45
- 239000003607 modifier Substances 0.000 claims description 39
- 239000000839 emulsion Substances 0.000 claims description 32
- 239000007800 oxidant agent Substances 0.000 claims description 30
- 238000006243 chemical reaction Methods 0.000 claims description 28
- 229910052757 nitrogen Inorganic materials 0.000 claims description 28
- 238000002156 mixing Methods 0.000 claims description 26
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 claims description 24
- 230000001590 oxidative effect Effects 0.000 claims description 22
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 19
- HRZFUMHJMZEROT-UHFFFAOYSA-L sodium disulfite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O HRZFUMHJMZEROT-UHFFFAOYSA-L 0.000 claims description 19
- 235000010262 sodium metabisulphite Nutrition 0.000 claims description 19
- 229940001584 sodium metabisulfite Drugs 0.000 claims description 18
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 17
- 125000002091 cationic group Chemical group 0.000 claims description 17
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 15
- 239000001301 oxygen Substances 0.000 claims description 15
- 229910052760 oxygen Inorganic materials 0.000 claims description 15
- 239000006184 cosolvent Substances 0.000 claims description 14
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 12
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 12
- 150000003839 salts Chemical class 0.000 claims description 12
- CMCBDXRRFKYBDG-UHFFFAOYSA-N 1-dodecoxydodecane Chemical compound CCCCCCCCCCCCOCCCCCCCCCCCC CMCBDXRRFKYBDG-UHFFFAOYSA-N 0.000 claims description 11
- ALYNCZNDIQEVRV-UHFFFAOYSA-N 4-aminobenzoic acid Chemical compound NC1=CC=C(C(O)=O)C=C1 ALYNCZNDIQEVRV-UHFFFAOYSA-N 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 229920001296 polysiloxane Polymers 0.000 claims description 10
- 239000008346 aqueous phase Substances 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 238000010008 shearing Methods 0.000 claims description 8
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 7
- 239000004202 carbamide Substances 0.000 claims description 7
- 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 7
- DLFVBJFMPXGRIB-UHFFFAOYSA-N Acetamide Chemical compound CC(N)=O DLFVBJFMPXGRIB-UHFFFAOYSA-N 0.000 claims description 6
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 6
- 239000003960 organic solvent Substances 0.000 claims description 6
- 239000011734 sodium Substances 0.000 claims description 6
- 229910052708 sodium Inorganic materials 0.000 claims description 6
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 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 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- MFBYFAJSUXUHIQ-UHFFFAOYSA-M sodium 4-prop-2-enoylbenzenesulfonate Chemical compound C=CC(C(C=C1)=CC=C1S([O-])(=O)=O)=O.[Na+] MFBYFAJSUXUHIQ-UHFFFAOYSA-M 0.000 claims description 5
- 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 5
- -1 uratam Chemical compound 0.000 claims description 5
- CJGJYOBXQLCLRG-UHFFFAOYSA-M sodium;2-hydroxy-3-prop-2-enoxypropane-1-sulfonate Chemical compound [Na+].[O-]S(=O)(=O)CC(O)COCC=C CJGJYOBXQLCLRG-UHFFFAOYSA-M 0.000 claims description 4
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 claims description 3
- WFVZQYQWGBYJRH-UHFFFAOYSA-N but-1-ene;2-methylprop-2-enamide;urea Chemical compound CCC=C.NC(N)=O.CC(=C)C(N)=O WFVZQYQWGBYJRH-UHFFFAOYSA-N 0.000 claims description 3
- WBZKQQHYRPRKNJ-UHFFFAOYSA-L disulfite Chemical compound [O-]S(=O)S([O-])(=O)=O WBZKQQHYRPRKNJ-UHFFFAOYSA-L 0.000 claims description 3
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims description 3
- 150000002978 peroxides Chemical class 0.000 claims description 3
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 claims description 3
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 3
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 3
- 235000010265 sodium sulphite Nutrition 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 230000009467 reduction Effects 0.000 abstract description 4
- 238000011161 development Methods 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 description 23
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 16
- 230000000977 initiatory effect Effects 0.000 description 16
- 238000006116 polymerization reaction Methods 0.000 description 16
- 239000002002 slurry Substances 0.000 description 13
- 230000001804 emulsifying effect Effects 0.000 description 11
- 239000012267 brine Substances 0.000 description 9
- 239000002131 composite material Substances 0.000 description 9
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 9
- 239000004927 clay Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 238000005553 drilling Methods 0.000 description 7
- 238000001914 filtration Methods 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 125000003368 amide group Chemical group 0.000 description 6
- 238000001179 sorption measurement Methods 0.000 description 6
- 230000032683 aging Effects 0.000 description 4
- QVMFAOWDBBLZMH-UHFFFAOYSA-N n-ethenyl-2-methylprop-2-enamide;urea Chemical compound NC(N)=O.CC(=C)C(=O)NC=C QVMFAOWDBBLZMH-UHFFFAOYSA-N 0.000 description 4
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- SQXVDGIQKMHXCV-UHFFFAOYSA-N 4-prop-2-enoylbenzenesulfonic acid Chemical compound OS(=O)(=O)C1=CC=C(C(=O)C=C)C=C1 SQXVDGIQKMHXCV-UHFFFAOYSA-N 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical group [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
- 229910002808 Si–O–Si Inorganic materials 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- ONCZQWJXONKSMM-UHFFFAOYSA-N dialuminum;disodium;oxygen(2-);silicon(4+);hydrate Chemical compound O.[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Na+].[Na+].[Al+3].[Al+3].[Si+4].[Si+4].[Si+4].[Si+4] ONCZQWJXONKSMM-UHFFFAOYSA-N 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000001294 propane Substances 0.000 description 2
- 229940080314 sodium bentonite Drugs 0.000 description 2
- 229910000280 sodium bentonite Inorganic materials 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 239000007762 w/o emulsion Substances 0.000 description 2
- OYHQOLUKZRVURQ-NTGFUMLPSA-N (9Z,12Z)-9,10,12,13-tetratritiooctadeca-9,12-dienoic acid Chemical compound C(CCCCCCC\C(=C(/C\C(=C(/CCCCC)\[3H])\[3H])\[3H])\[3H])(=O)O OYHQOLUKZRVURQ-NTGFUMLPSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 229910008051 Si-OH Inorganic materials 0.000 description 1
- 229910006358 Si—OH Inorganic materials 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 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 description 1
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 1
- 239000010428 baryte Substances 0.000 description 1
- 229910052601 baryte Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- SRSXLGNVWSONIS-UHFFFAOYSA-M benzenesulfonate Chemical compound [O-]S(=O)(=O)C1=CC=CC=C1 SRSXLGNVWSONIS-UHFFFAOYSA-M 0.000 description 1
- 229940077388 benzenesulfonate Drugs 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000002431 foraging effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000012643 polycondensation polymerization Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000004296 sodium metabisulphite Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229950004959 sorbitan oleate Drugs 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/66—Arsenic compounds
- C07F9/70—Organo-arsenic compounds
- C07F9/74—Aromatic compounds
- C07F9/78—Aromatic compounds containing amino groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/10—Compounds having one or more C—Si linkages containing nitrogen having a Si-N linkage
-
- 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
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/56—Acrylamide; Methacrylamide
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Abstract
The invention provides an emulsifying agent for preparing a filtrate reducer, a composition, the filtrate reducer and a preparation method thereof, belonging to the technical field of oilfield development, wherein raw materials for preparing the emulsifying agent comprise hydroxyethyl ethylenediamine, linoleic acid and 4-hydroxy phenylarsonic acid; the fluid loss additive prepared by the emulsifier has excellent high temperature resistance and fluid loss reduction performance.
Description
Technical Field
The invention relates to the technical field of oilfield development, in particular to an emulsifier for preparing a filtrate reducer, a composition, the filtrate reducer and a preparation method thereof.
Background
With the further increase of the demands of people on petroleum resources, deep well drilling becomes a focus of various countries, and in the deep well drilling process, when drilling into high-temperature and high-pressure stratum, most of the existing drilling fluid treating agents have poor high-temperature resistance and can be decomposed, degraded or completely failed in the high-temperature stratum. The fluid loss additive is used in the drilling fluid treatment agent in the largest amount, and the emulsifier is a key component in the fluid loss additive, so that the improvement of the high temperature resistance of the emulsifier is a key for ensuring that the drilling fluid treatment agent has stable performance at high temperature.
However, the existing emulsifying agent for the fluid loss additive has insufficient high temperature resistance, particularly the emulsifying agent loses the emulsifying effect at the temperature of more than 220 ℃, so that the performance of the fluid loss additive is unstable in the drilling construction process, and the emulsion breaks, the oil and the water are layered, so that the barite is precipitated.
Therefore, it is highly desirable to provide an emulsifier having excellent high temperature resistance.
Disclosure of Invention
Aiming at one or more technical problems in the prior art, the invention provides an emulsifying agent for preparing a fluid loss additive, a composition, the fluid loss additive and a preparation method thereof.
In a first aspect, the present invention provides an emulsifier for preparing a fluid loss additive, wherein the emulsifier is prepared from hydroxyethylethylene diamine, linoleic acid and 4-hydroxyphenylarsonic acid.
Preferably, the raw materials for preparing the emulsifier comprise, by weight, 100-120 parts of hydroxyethyl ethylenediamine, 100-120 parts of linoleic acid and 80-100 parts of 4-hydroxy phenylarsonic acid.
In a second aspect, a composition for preparing a fluid loss additive, the composition comprising the emulsifier of the first aspect.
Preferably, the composition further comprises a silicone modifier; the raw materials for preparing the organosilicon modifier comprise acrylic acid and hexamethyldisilazane;
Preferably, the raw materials for preparing the organosilicon modifier comprise 100-120 parts of acrylic acid and 150-200 parts of hexamethyldisilazane in parts by weight.
Preferably, the composition comprises an emulsion, a first reducing agent, a first oxidizing agent, and a phase inversion agent; the emulsion comprises an aqueous phase, an oil phase and a second reducing agent;
The aqueous phase comprises an acrylamide monomer, a shear-resistant monomer, a salt-resistant monomer, a cationic monomer, a cosolvent, a second oxidant and water; preferably, the water phase comprises 180-210 parts by weight of acrylamide, 5-10 parts by weight of shear-resistant monomer, 5-10 parts by weight of salt-resistant monomer, 30-50 parts by weight of cationic monomer, 5-10 parts by weight of cosolvent, 0.2-0.8 part by weight of second oxidant and 300-500 parts by weight of water;
The oil phase comprises white oil and an emulsifier; preferably, the oil phase comprises 230-270 parts of white oil and 25-35 parts of emulsifying agent in parts by weight;
preferably, the weight part of the second reducing agent is 0.3-1.0 part;
Preferably, the weight portions of the first reducing agent are 0.3 to 1.0 portion, the weight portions of the first oxidizing agent are 0.2 to 0.8 portion, and the weight portions of the phase inversion agent are 19 to 23 portions.
Preferably, the composition further comprises a silicone modifier; preferably, the weight portion of the organosilicon modifier is 15-20 portions.
Preferably, the first reducing agent and the second reducing agent are selected from one or more of sulfite and metabisulfite, preferably one or two of sodium sulfite and sodium metabisulfite;
The first oxidant and the second oxidant are selected from one or more of persulfates and peroxides, preferably one or two of potassium persulfate and hydrogen peroxide;
the phase inversion agent is one or two of hexaglycol dodecyl ether and nonylphenol polyoxyethylene ether;
the shearing-resistant monomer is one or two of sodium 4-acryloylbenzenesulfonate and methacrylamide ethyl ethylene urea;
The anti-salt monomer is one or two of sodium 3-allyloxy-2-hydroxy-1-propane sulfonate and sodium 2-acrylamide-2-octadecyl propane sulfonate;
The cationic monomer is one or two of methacryloyloxyethyl trimethyl ammonium chloride, acryloyloxyethyl trimethyl ammonium chloride and dimethyl diallyl ammonium chloride; and/or
The cosolvent is one or two of para aminobenzoic acid, uratam, acetamide and urea.
In a third aspect, the invention provides a fluid loss additive, the fluid loss additive being prepared from the composition of the second aspect.
In a fourth aspect, the present invention provides a method for preparing the fluid loss additive according to the third aspect, the method comprising the following steps:
s1, uniformly mixing white oil and an emulsifier to obtain an oil phase;
s2, dissolving acrylamide, a shearing-resistant monomer, a salt-resistant monomer, a cationic monomer, a cosolvent and a second oxidant in water, and regulating the pH to 6.5-6.8 to obtain a water phase;
s3, fully mixing the water phase and the oil phase, introducing nitrogen to remove oxygen, adding a second reducing agent, and reacting at 35-40 ℃ for 30-50 min to obtain emulsion;
S4, mixing the emulsion with an organic solvent, adding a first oxidant, introducing nitrogen to remove oxygen for 20-40 min, adding a first reducing agent, reacting at 35-40 ℃ for 30-50 min, and adding a phase inversion agent to obtain the filtrate reducer; or (b)
S4, mixing the emulsion, the organosilicon modifier and the organic solvent, adding a first oxidant, introducing nitrogen to remove oxygen for 20-40 min, adding a first reducing agent, reacting at 35-40 ℃ for 30-50 min, and adding a phase inversion agent to obtain the fluid loss additive.
Preferably, the preparation method of the emulsifier comprises the following steps: fully mixing hydroxyethyl ethylenediamine, linoleic acid and 4-hydroxy phenylarsonic acid, reacting for 2-3 hours at 80-90 ℃, then heating to 100 ℃, and removing water generated by the reaction to obtain the emulsifier;
The preparation method of the organosilicon modifier comprises the following steps: fully mixing acrylic acid and hexamethyldisilazane, introducing nitrogen to remove oxygen for 20-40 min, and reacting at 60 ℃ for 3-4 h to obtain the organosilicon modifier.
Compared with the prior art, the invention has at least the following beneficial effects:
The invention takes 4-hydroxy phenylarsonic acid, linoleic acid and hydroxyethyl ethylenediamine as raw materials to prepare the emulsifier, which belongs to an oligomeric surfactant, and the molecule contains an amido, a benzene ring structure and a long carbon chain structure. When the oil-water interface gathers and adsorbs, the amido in the molecule can strengthen the adsorption capacity of the molecule on the oil-water interface and improve the emulsifying capacity of the emulsifier; the benzene ring structure can improve the rigidity of the molecular chain and the shearing resistance of the fluid loss additive, and can effectively solve the problems that the molecular chain of the existing linear structure emulsifier is insufficient in rigidity, and the molecular chain is easy to twist and deform at high temperature so as to cause the fluid loss additive to lose effectiveness. The long carbon chains have hydrophobicity, mutual repulsive interaction exists between the long carbon chains, the hydrogen bond formed between the amide groups is very firm, the capability of constructing and stabilizing the water-in-oil emulsion can be improved under the action of two kinds of force, and the high temperature resistance of the fluid loss additive is greatly improved. Compared with the existing emulsifying agent for the fluid loss additive, the emulsifying agent provided by the invention can effectively improve the high temperature resistance of the fluid loss additive.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments described below will be clearly and completely described in conjunction with the technical solutions of the embodiments of the present invention, and it is apparent that the described embodiments are some, but not all, embodiments of the present invention, and all other embodiments obtained by persons of ordinary skill in the art without making any inventive effort based on the embodiments of the present invention are within the scope of protection of the present invention.
In a first aspect, the present invention provides an emulsifier for preparing a fluid loss additive, wherein the emulsifier is prepared from hydroxyethylethylene diamine, linoleic acid and 4-hydroxyphenylarsonic acid.
The invention takes 4-hydroxy phenylarsonic acid, linoleic acid and hydroxyethyl ethylenediamine as raw materials to prepare the emulsifier, which belongs to an oligomeric surfactant, and the molecule contains an amido, a benzene ring structure and a long carbon chain structure. When the oil-water interface gathers and adsorbs, the amido in the molecule can strengthen the adsorption capacity of the molecule on the oil-water interface and improve the emulsifying capacity of the emulsifier. The benzene ring structure can improve the rigidity of the molecular chain and the shearing resistance of the fluid loss additive, and can effectively solve the problems that the molecular chain of the existing linear structure emulsifier is insufficient in rigidity, and the molecular chain is easy to twist and deform at high temperature so as to cause the fluid loss additive to lose effectiveness. The long carbon chains have hydrophobicity, mutual repulsive interaction exists between the long carbon chains, the hydrogen bond formed between the amide groups is very firm, the capability of constructing and stabilizing the water-in-oil emulsion can be improved under the action of two kinds of force, and the high temperature resistance of the fluid loss additive is greatly improved. Compared with the existing emulsifying agent for the fluid loss additive, the emulsifying agent provided by the invention can effectively improve the high temperature resistance of the fluid loss additive.
According to some preferred embodiments, the raw materials for preparing the emulsifier include 100-120 parts (for example, 100 parts, 102 parts, 104 parts, 105 parts, 106 parts, 108 parts, 110 parts, 112 parts, 114 parts, 115 parts, 116 parts, 118 parts or 120 parts) of hydroxyethyl ethylenediamine, 100-120 parts (for example, 100 parts, 102 parts, 104 parts, 105 parts, 106 parts, 108 parts, 110 parts, 112 parts, 114 parts, 115 parts, 116 parts, 118 parts or 120 parts) of linoleic acid, and 80-100 parts (for example, 80 parts, 82 parts, 84 parts, 85 parts, 86 parts, 88 parts, 90 parts, 92 parts, 94 parts, 95 parts, 96 parts, 98 parts or 100 parts) of 4-hydroxy phenylarsonic acid.
In a second aspect, the present invention provides a composition for the preparation of a fluid loss additive, the composition comprising an emulsifier according to the first aspect.
According to some preferred embodiments, the composition further comprises a silicone modifier; the raw materials for preparing the organosilicon modifier comprise acrylic acid and hexamethyldisilazane; preferably, the raw materials for preparing the silicone modifier include 100 to 120 parts (for example, 100 parts, 102 parts, 104 parts, 105 parts, 106 parts, 108 parts, 110 parts, 112 parts, 114 parts, 115 parts, 116 parts, 118 parts or 120 parts) of acrylic acid and 150 to 200 parts (for example, 150 parts, 155 parts, 160 parts, 165 parts, 170 parts, 175 parts, 180 parts, 185 parts, 190 parts, 195 parts or 200 parts) of hexamethyldisilazane in parts by weight.
The invention takes acrylic acid and hexamethyldisilazane as raw materials to prepare the organosilicon modifier, and the organosilicon modifier contains carbon-carbon double bonds and silane structures. The carbon-carbon double bonds in the molecule can polymerize with the polymer backbone; the silane structure is easy to hydrolyze into a Si-OH structure, condensation polymerization reaction can be carried out on the surface-OH of clay, the generated Si-O-Si has large bond energy and high cracking temperature, the polymer and the clay can still have stronger adsorption capacity in a high-temperature environment, the polymer and the clay can keep strong adsorption effect under the high-temperature condition, a net structure can be formed among a plurality of Si-O-Si bonds, more fine clay particles are adsorbed, the fine clay particles are not easy to adhere and settle, the proportion of the fine particles is greatly increased, a thin and compact filter cake is formed, and the purpose of reducing the filtration loss is achieved. According to the invention, on the basis of adopting the self-made emulsifier to prepare the filtrate reducer, the organic silicon modifier is introduced, so that the filtrate loss can be further reduced, and the filtrate loss performance is improved.
According to some preferred embodiments, the composition comprises an emulsion, a first reducing agent, a first oxidizing agent, and a phase inversion agent;
The emulsion comprises an aqueous phase, an oil phase and a second reducing agent;
The aqueous phase comprises an acrylamide monomer, a shear-resistant monomer, a salt-resistant monomer, a cationic monomer, a cosolvent, a second oxidant and water; preferably, the aqueous phase comprises 180 to 210 parts (e.g., 180 parts, 182 parts, 184 parts, 185 parts, 186 parts, 188 parts, 190 parts, 192 parts, 194 parts, 195 parts, 200 parts, 202 parts, 204 parts, 205 parts, 208 parts, or 210 parts) of acrylamide by weight, 5 to 10 parts (e.g., 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, or 10 parts) of a shear resistant monomer, 5 to 10 parts (e.g., 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, or 10 parts) of a salt resistant monomer, 30 to 50 parts (e.g., 30 parts, 32 parts, 35 parts, 38 parts, 40 parts, 42 parts, 45 parts, 48 parts, or 50 parts) of a cationic monomer, 5 to 10 parts (e.g., 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, or 10 parts) of a co-solvent, 0.2 to 0.8 parts (e.g., 0.2 parts, 0.3 parts, 9 parts, or 10 parts) of a second oxidant (e.g., 0.g., 0.2 parts, 7 parts, 8 parts, 9 parts, or 10 parts, 0.500.500 parts, 400 parts, 500.2 parts, 500 parts, 400 parts, or 500 parts of water by weight);
the oil phase comprises white oil and an emulsifier; the oil phase comprises 230-270 parts by weight (for example, 230 parts, 235 parts, 240 parts, 245 parts, 250 parts, 255 parts, 260 parts, 265 parts or 270 parts) of white oil and 25-35 parts by weight (for example, 25 parts, 26 parts, 27 parts, 28 parts, 29 parts, 30 parts, 31 parts, 32 parts, 33 parts, 34 parts or 35 parts) of emulsifying agent;
The second reducing agent is 0.3 to 1.0 parts by weight (for example, may be 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts, or 1.0 parts);
preferably, the first reducing agent is 0.3 to 1.0 part (for example, 0.3 part, 0.4 part, 0.5 part, 0.6 part, 0.7 part, 0.8 part, 0.9 part or 1 part) by weight, the first oxidizing agent is 0.2 to 0.8 part (for example, 0.2 part, 0.3 part, 0.4 part, 0.5 part, 0.6 part, 0.7 part or 0.8 part) by weight, and the phase inversion agent is 19 to 23 parts (for example, 19 parts, 20 parts, 21 parts, 22 parts or 23 parts) by weight.
According to some preferred embodiments, the composition further comprises a silicone modifier; preferably, the weight part of the silicone modifier is 15 to 20 parts (for example, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, or 20 parts may be used).
The composition of the invention also comprises a solvent which is needed in the process of preparing the filtrate reducer.
According to some preferred embodiments, the first reducing agent and the second reducing agent are selected from one or more of sulphite, metabisulphite, preferably one or both of sodium sulphite and sodium metabisulphite;
The first oxidant and the second oxidant are selected from one or more of persulfates and peroxides, preferably one or two of potassium persulfate and hydrogen peroxide;
the phase inversion agent is one or two of hexaglycol dodecyl ether and nonylphenol polyoxyethylene ether;
the shearing-resistant monomer is one or two of sodium 4-acryloylbenzenesulfonate and methacrylamide ethyl ethylene urea;
The anti-salt monomer is one or two of sodium 3-allyloxy-2-hydroxy-1-propane sulfonate and sodium 2-acrylamide-2-octadecyl propane sulfonate;
the cationic monomer is one or two of methacryloyloxyethyl trimethyl ammonium chloride, acryloyloxyethyl trimethyl ammonium chloride and dimethyl diallyl ammonium chloride; according to the invention, the cationic monomer is added, and the multipoint adsorption formed by the cationic groups can form a layer of cationic adsorption protective film on the clay surface, so that the clay particle expansion is inhibited, and the colloid stability is maintained.
The cosolvent is one or two of para aminobenzoic acid, uratam, acetamide and urea.
The invention is exemplified by the oxidizing agent, reducing agent, phase inversion agent, shear resistant monomer, salt resistant monomer, cationic monomer and cosolvent to illustrate the technical scheme of the invention, but not limited to, the oxidizing agent, reducing agent, phase inversion agent, shear resistant monomer, salt resistant monomer, cationic monomer and cosolvent are not limited to the above types, and other substances meeting the requirements in the field can be used.
In a third aspect, the present invention provides a fluid loss additive comprising the composition of the second aspect.
The fluid loss additive prepared by the composition provided by the invention has excellent high temperature resistance and fluid loss performance, the fluid loss of the composite brine-based slurry is less than or equal to 11mL, and the fluid loss reduction rate of the composite brine-based slurry is more than or equal to 89 percent at the temperature of 240 ℃.
In a fourth aspect, the present invention provides a method for preparing the fluid loss additive according to the third aspect, the method comprising the following steps:
s1, uniformly mixing white oil and an emulsifier to obtain an oil phase;
S2, dissolving acrylamide, a shearing-resistant monomer, a salt-resistant monomer, a cationic monomer, a cosolvent and a second oxidant in water, and regulating the pH to be 6.5-6.8 (for example, 6.5, 6.6, 6.7 or 6.8) to obtain a water phase;
S3, fully mixing the water phase and the oil phase, introducing nitrogen to remove oxygen, adding a second reducing agent, and reacting at 35-40 ℃ (for example, 35 ℃, 36 ℃, 37 ℃, 38 ℃, 39 ℃ or 40 ℃) for 30-50 min (for example, 30min, 32min, 34min, 35min, 38min, 40min, 42min, 44min, 45min, 48min or 50 min) to obtain emulsion;
S4, mixing the emulsion and an organic solvent, adding a first oxidant, deoxidizing for 20-40 min (for example, 20min, 22min, 24min, 25min, 28min, 30min, 32min, 34min, 35min, 38min or 40 min) by introducing nitrogen, adding a first reducing agent, reacting for 30-50 min (for example, 30min, 32min, 34min, 35min, 38min, 40min, 42min, 44min, 45min, 48min or 50 min) at 35-40 ℃ (for example, 35 ℃, 37 ℃,38 ℃ or 40 ℃) to obtain the filtrate reducer; or (b)
S4, mixing the emulsion, the organosilicon modifier and the organic solvent, adding a first oxidant, deoxidizing for 20-40 min (for example, 20min, 22min, 24min, 25min, 28min, 30min, 32min, 34min, 35min, 38min or 40 min) by introducing nitrogen, adding a first reducing agent, and reacting for 30-50 min (for example, 30min, 32min, 34min, 35min, 38min, 40min, 42min, 44min, 45min, 48min or 50 min) at 35-40 ℃ (for example, 35 ℃ at 37 ℃ at 39 ℃ or 40 ℃) to obtain the filtrate reducer.
It should be noted that the types of the organic solvents are not particularly limited, and the requirements of fully mixing the emulsion and the organosilicon modifier can be met; in some preferred embodiments of the invention, acrylic acid is used to adjust the pH of the aqueous phase.
According to some preferred embodiments, the method of preparing the emulsifier comprises: fully mixing hydroxyethyl ethylenediamine, linoleic acid and 4-hydroxy phenylarsonic acid, reacting for 2-3 hours (for example, 2 hours, 2.2 hours, 2.4 hours, 2.5 hours, 2.6 hours, 2.8 hours or 3 hours) at 80-90 ℃ (for example, the temperature can be 80 ℃, 81 ℃, 82 ℃, 83 ℃, 84 ℃, 85 ℃, 86 ℃, 88 ℃ or 90 ℃), then heating to 100 ℃, and removing water generated by the reaction to obtain the emulsifier;
The reaction formula for preparing the emulsifier is as follows:
Wherein R-COOH is linoleic acid.
The preparation method of the organosilicon modifier comprises the following steps: fully mixing acrylic acid and hexamethyldisilazane, introducing nitrogen to remove oxygen for 20-40 min (for example, 20min, 25min, 30min, 35min or 40 min), and reacting at 60 ℃ for 3-4 h (for example, 3h, 3.2h, 3.4h, 3.5h, 3.6h, 3.8h or 4 h) to obtain the organosilicon modifier.
The reaction formula for preparing the organosilicon modifier is as follows:
The reaction formula for preparing the emulsifier and the reaction formula for preparing the organosilicon modifier are only used for illustrating the principle of the reaction, and only the structural formulas of the reactants and the main products are shown.
In order to more clearly illustrate the technical scheme and advantages of the present invention, the present invention will be further described below with reference to examples.
The performance of the filtrate reducer prepared in the examples and the comparative examples is evaluated by referring to the method in SY/T5696-2017;
The test method is as follows:
(1) Testing the filtration loss and the vector reduction rate of the composite brine-based slurry:
Preparing composite brine-based slurry: 400mL of distilled water is measured and placed in a beaker, 18.0g of sodium chloride, 2.0g of anhydrous calcium chloride and 5.2g of magnesium chloride are added, and 60.0g of sodium bentonite meeting SY/T5490-2016 standard and 3.6g of anhydrous sodium carbonate are added after the distilled water is dissolved; stirring at high speed (11000 r/min) for 20min, stopping stirring at least twice, scraping the clay adhered to the container wall, and curing in a sealed container at 25+ -3deg.C for 24h to obtain composite brine-based slurry;
Base slurry fluid loss measurement: stirring the cured composite brine-based slurry at a high speed for 20min, putting the slurry into a furnace with a set temperature of 240 ℃ for aging for 16h, cooling to room temperature (25 ℃), stirring at a high speed (11000 r/min) for 5min, measuring the base slurry filtration F 0 according to GB/T16783.1, wherein the filtration should be 80-110mL, otherwise, adjusting the addition amount of sodium bentonite;
Fluid loss measurement after high temperature aging: adding 12.0g of filtrate reducer sample into the composite brine-based slurry, stirring at high speed (11000 r/min) for 20min, aging in a furnace with a set temperature of 220 ℃ for 16h, cooling to room temperature (25 ℃), stirring at high speed for 5min, and measuring the filtrate loss F 1 after high-temperature aging according to GB/T16783.1;
The reduction rate of the filtration loss of the composite brine-based slurry is measured according to the formula (1):
F＝(F0-F1)/F0×100％(1)，
wherein:
f, reducing the filtration loss rate of the composite brine-based slurry,%;
F 0 -the filtration loss of the base slurry is 100mL;
f 1 -fluid loss after high temperature aging in milliliters (mL).
The materials and the reagents in the invention can be obtained by direct purchase or self-synthesis in the market, and the specific model is not limited. The emulsifiers and silicone modifiers of examples and comparative examples of the present invention were the emulsifiers prepared in example 1 and the silicone modifiers prepared in example 2, unless otherwise specified.
Example 1
Preparing an emulsifying agent: adding 100 parts by weight of hydroxyethyl ethylenediamine, 110 parts by weight of linoleic acid and 90 parts by weight of 4-hydroxy phenylarsonic acid into a three-neck flask, uniformly stirring, heating to 85 ℃, reacting for 3 hours, heating to 100 ℃, and removing water generated in the reaction process to obtain a product.
Example 2
Preparation of organosilicon modifier: 110 parts by weight of acrylic acid and 180 parts by weight of hexamethyldisilazane are added into a three-neck flask, stirred uniformly, deoxygenated by introducing nitrogen for 30min, heated to 60 ℃, and reacted for 4 hours to prepare the organosilicon modifier.
Example 3
S1, uniformly mixing 250 parts by weight of white oil and 30 parts by weight of an emulsifier to obtain an oil phase;
S2, 200 parts by weight of acrylamide, 40 parts by weight of dimethyl diallyl ammonium chloride, 6 parts by weight of 4-acryloylbenzene sulfonate sodium salt, 5 parts by weight of 3-allyloxy-2-hydroxy-1-propane sulfonate sodium salt, 6 parts by weight of para-aminobenzoic acid and 0.5 part by weight of potassium persulfate are dissolved in water, and the pH is adjusted to 6.5 to prepare a water phase;
S3, adding the water phase into the oil phase, fully emulsifying, transferring into a reaction kettle, introducing nitrogen to deoxidize for 30min, adding 0.5 part by weight of sodium metabisulfite, and initiating polymerization reaction at 38 ℃ to obtain emulsion;
S4, adding 0.5 part by weight of potassium persulfate and 15 parts by weight of dimethyl sulfoxide into the emulsion, uniformly stirring, introducing nitrogen to remove oxygen for 30min, adding 0.5 part by weight of sodium metabisulfite, initiating polymerization reaction, wherein the reaction temperature is 40 ℃, adding 20 parts by weight of hexaglycol dodecyl ether after the reaction is completed, and uniformly stirring to obtain the filtrate reducer.
Example 4
S1, uniformly mixing 250 parts by weight of white oil and 32 parts by weight of an emulsifier to obtain an oil phase;
s2, dissolving 180 parts by weight of acrylamide, 40 parts by weight of methacryloyloxyethyl trimethyl ammonium chloride, 7 parts by weight of 4-acryloylbenzene sulfonate, 5 parts by weight of 3-allyloxy-2-hydroxy-1-propane sulfonate, 6 parts by weight of urea and 0.5 part by weight of potassium persulfate in 450 parts by weight of water, and regulating the pH to 6.5 to obtain a water phase;
s3, adding the water phase into the oil phase, fully emulsifying, transferring into a reaction kettle, introducing nitrogen to deoxidize for 30min, adding 0.5 part by weight of sodium metabisulfite as a reducing agent, and initiating polymerization reaction at 38 ℃ to prepare emulsion;
S4, adding 0.5 part by weight of potassium persulfate and 16 parts by weight of dimethyl sulfoxide into the emulsion, uniformly stirring, introducing nitrogen to remove oxygen for 30min, adding 0.5 part by weight of sodium metabisulfite, initiating polymerization reaction, wherein the reaction temperature is 40 ℃, adding 20 parts by weight of hexaglycol dodecyl ether after the reaction is completed, and uniformly stirring to obtain the filtrate reducer.
Example 5
S1, uniformly mixing 250 parts by weight of white oil and 32 parts by weight of an emulsifier to obtain an oil phase;
s2, dissolving 190 parts by weight of acrylamide, 50 parts by weight of acryloyloxyethyl trimethyl ammonium chloride, 6 parts by weight of methacrylamidoethylene urea, 5 parts by weight of 3-allyloxy-2-hydroxy-1-propane sodium sulfonate, 6 parts by weight of urea and 0.5 part by weight of potassium persulfate in 430 parts by weight of water, and regulating the pH value to 6.5 to obtain a water phase;
s3, adding the water phase into the oil phase, fully emulsifying, transferring into a reaction kettle, introducing nitrogen to deoxidize for 30min, adding 0.5 part by weight of sodium metabisulfite as a reducing agent, and initiating polymerization reaction at 38 ℃ to prepare emulsion;
S4, adding 0.5 part by weight of potassium persulfate and 16 parts by weight of dimethyl sulfoxide into the emulsion, uniformly stirring, introducing nitrogen to deoxidize for 30min, adding 0.5 part by weight of sodium metabisulfite, initiating polymerization reaction, reacting at 40 ℃, adding 19 parts by weight of hexaglycol dodecyl ether after the reaction is completed, and uniformly stirring to obtain the filtrate reducer.
Example 6
S1, uniformly mixing 250 parts by weight of white oil and 32 parts by weight of an emulsifier to obtain an oil phase;
S2, dissolving 190 parts by weight of acrylamide, 50 parts by weight of acryloyloxyethyl trimethyl ammonium chloride, 6 parts by weight of methacrylamidoethylene urea, 5 parts by weight of 2-acrylamido-2-octadecyl propane sodium sulfonate, 6 parts by weight of uratam and 0.5 part by weight of potassium persulfate in 430 parts by weight of water, and regulating the pH value to 6.5 to obtain a water phase;
s3, adding the water phase into the oil phase, fully emulsifying, transferring into a reaction kettle, introducing nitrogen to deoxidize for 30min, adding 0.5 part by weight of sodium metabisulfite as a reducing agent, and initiating polymerization reaction at 38 ℃ to prepare emulsion;
s4, adding 0.5 part by weight of potassium persulfate and 15 parts by weight of dimethyl sulfoxide into the emulsion, uniformly stirring, introducing nitrogen to deoxidize for 30min, adding 0.5 part by weight of sodium metabisulfite, initiating polymerization reaction, reacting at 40 ℃, adding 19 parts by weight of hexaglycol dodecyl ether after the reaction is completed, and uniformly stirring to obtain the filtrate reducer.
Example 7
S1, uniformly mixing 250 parts by weight of white oil and 30 parts by weight of an emulsifier to obtain an oil phase;
S2, 200 parts by weight of acrylamide, 40 parts by weight of dimethyl diallyl ammonium chloride, 6 parts by weight of 4-acryloylbenzene sulfonate sodium salt, 5 parts by weight of 3-allyloxy-2-hydroxy-1-propane sulfonate sodium salt, 6 parts by weight of para-aminobenzoic acid and 0.5 part by weight of potassium persulfate are dissolved in water, and the pH is adjusted to 6.5 to prepare a water phase;
S3, adding the water phase into the oil phase, fully emulsifying, transferring into a reaction kettle, introducing nitrogen to deoxidize for 30min, adding 0.5 part by weight of sodium metabisulfite, and initiating polymerization reaction at 38 ℃ to obtain emulsion;
s4, adding 18 parts by weight of an organosilicon modifier and 15 parts by weight of dimethyl sulfoxide into the emulsion, adding 0.5 part by weight of potassium persulfate, stirring uniformly, introducing nitrogen to remove oxygen for 30min, adding 0.5 part by weight of sodium metabisulfite, initiating polymerization reaction at 40 ℃, adding 20 parts by weight of hexaglycol dodecyl ether after the reaction is completed, and stirring uniformly to obtain the filtrate reducer.
Example 8
S1, uniformly mixing 250 parts by weight of white oil and 32 parts by weight of an emulsifier to obtain an oil phase;
s2, dissolving 180 parts by weight of acrylamide, 40 parts by weight of methacryloyloxyethyl trimethyl ammonium chloride, 7 parts by weight of 4-acryloylbenzene sulfonate, 5 parts by weight of 3-allyloxy-2-hydroxy-1-propane sulfonate, 6 parts by weight of urea and 0.5 part by weight of potassium persulfate in 450 parts by weight of water, and regulating the pH to 6.5 to obtain a water phase;
s3, adding the water phase into the oil phase, fully emulsifying, transferring into a reaction kettle, introducing nitrogen to deoxidize for 30min, adding 0.5 part by weight of sodium metabisulfite as a reducing agent, and initiating polymerization reaction at 38 ℃ to prepare emulsion;
S4, adding 19 parts by weight of an organosilicon modifier and 16 parts by weight of dimethyl sulfoxide into the emulsion, adding 0.5 part by weight of potassium persulfate, stirring uniformly, introducing nitrogen to remove oxygen for 30min, adding 0.5 part by weight of sodium metabisulfite, initiating polymerization reaction at 40 ℃, adding 20 parts by weight of hexaglycol dodecyl ether after the reaction is completed, and stirring uniformly to obtain the filtrate reducer.
Example 9
S1, uniformly mixing 250 parts by weight of white oil and 32 parts by weight of an emulsifier to obtain an oil phase;
s2, dissolving 190 parts by weight of acrylamide, 50 parts by weight of acryloyloxyethyl trimethyl ammonium chloride, 6 parts by weight of methacrylamidoethylene urea, 5 parts by weight of 3-allyloxy-2-hydroxy-1-propane sodium sulfonate, 6 parts by weight of urea and 0.5 part by weight of potassium persulfate in 430 parts by weight of water, and regulating the pH value to 6.5 to obtain a water phase;
s3, adding the water phase into the oil phase, fully emulsifying, transferring into a reaction kettle, introducing nitrogen to deoxidize for 30min, adding 0.5 part by weight of sodium metabisulfite as a reducing agent, and initiating polymerization reaction at 38 ℃ to prepare emulsion;
S4, adding 19 parts by weight of an organosilicon modifier and 16 parts by weight of dimethyl sulfoxide into the emulsion, adding 0.5 part by weight of potassium persulfate, stirring uniformly, introducing nitrogen to remove oxygen for 30min, adding 0.5 part by weight of sodium metabisulfite, initiating polymerization reaction at 40 ℃, adding 19 parts by weight of hexaglycol dodecyl ether after the reaction is completed, and stirring uniformly to obtain the filtrate reducer.
Example 10
S1, uniformly mixing 250 parts by weight of white oil and 32 parts by weight of an emulsifier to obtain an oil phase;
S2, dissolving 190 parts by weight of acrylamide, 50 parts by weight of acryloyloxyethyl trimethyl ammonium chloride, 6 parts by weight of methacrylamidoethylene urea, 5 parts by weight of 2-acrylamido-2-octadecyl propane sodium sulfonate, 6 parts by weight of uratam and 0.5 part by weight of potassium persulfate in 430 parts by weight of water, and regulating the pH value to 6.5 to obtain a water phase;
s3, adding the water phase into the oil phase, fully emulsifying, transferring into a reaction kettle, introducing nitrogen to deoxidize for 30min, adding 0.5 part by weight of sodium metabisulfite as a reducing agent, and initiating polymerization reaction at 38 ℃ to prepare emulsion;
S4, adding 19 parts by weight of an organosilicon modifier and 16 parts by weight of dimethyl sulfoxide into the emulsion, adding 0.5 part by weight of potassium persulfate, stirring uniformly, introducing nitrogen to remove oxygen for 30min, adding 0.5 part by weight of sodium metabisulfite, initiating polymerization reaction at 40 ℃, adding 19 parts by weight of hexaglycol dodecyl ether after the reaction is completed, and stirring uniformly to obtain the filtrate reducer.
Comparative example 1
Substantially the same as in example 3, except that: in step S1, the emulsifier is sorbitan oleate.
Comparative example 2
Substantially the same as in example 7, except that: in step S4, 30 parts by weight of the silicone modifier.
Comparative example 3
Substantially the same as in example 7, except that: in step S4, hexamethyldisilazane is used in place of the organosilicon modifier.
Comparative example 4
Substantially the same as in example 7, except that: no salt-resistant monomer sodium 3-allyloxy-2-hydroxy-1-propane sulfonate was added.
Comparative example 5
Substantially the same as in example 7, except that: no shear resistant monomer sodium 4-propenoyl benzenesulfonate was added.
TABLE 1 Performance data for fluid loss additives prepared in examples and comparative examples
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. An emulsifier for preparing a filtrate reducer is characterized in that raw materials for preparing the emulsifier comprise hydroxyethyl ethylenediamine, linoleic acid and 4-hydroxy phenylarsonic acid;
the raw materials for preparing the emulsifier comprise, by weight, 100-120 parts of hydroxyethyl ethylenediamine, 100-120 parts of linoleic acid and 80-100 parts of 4-hydroxyphenylarsonic acid;
The preparation method of the emulsifier comprises the following steps: and fully mixing hydroxyethyl ethylenediamine, linoleic acid and 4-hydroxy phenylarsonic acid, reacting for 2-3 hours at 80-90 ℃, then heating to 100 ℃, and removing water generated by the reaction to obtain the emulsifier.
2. A composition for preparing a fluid loss additive, the composition comprising an emulsion, a first reducing agent, a first oxidizing agent, a phase inversion agent, and a silicone modifier;
The emulsion comprises an aqueous phase, an oil phase and a second reducing agent;
the aqueous phase comprises an acrylamide monomer, a shear-resistant monomer, a salt-resistant monomer, a cationic monomer, a cosolvent, a second oxidant and water; the aqueous phase comprises, by weight, 180-210 parts of acrylamide, 5-10 parts of a shear-resistant monomer, 5-10 parts of a salt-resistant monomer, 30-50 parts of a cationic monomer, 5-10 parts of a cosolvent, 0.2-0.8 part of a second oxidant and 300-500 parts of water;
the oil phase comprising white oil and the emulsifier of claim 1; the oil phase comprises 230-270 parts of white oil and 25-35 parts of emulsifying agent in parts by weight;
the weight part of the second reducing agent is 0.3-1.0 part;
0.3-1.0 part of a first reducing agent, 0.2-0.8 part of a first oxidizing agent and 19-23 parts of a phase inversion agent in parts by weight;
the shearing-resistant monomer is one or two of sodium 4-acryloylbenzenesulfonate and methacrylamide ethyl ethylene urea;
The anti-salt monomer is one or two of sodium 3-allyloxy-2-hydroxy-1-propane sulfonate and sodium 2-acrylamide-2-octadecyl propane sulfonate;
the cationic monomer is one or two of methacryloyloxyethyl trimethyl ammonium chloride, acryloyloxyethyl trimethyl ammonium chloride and dimethyl diallyl ammonium chloride;
The raw materials for preparing the organosilicon modifier comprise acrylic acid and hexamethyldisilazane;
15-20 parts of an organosilicon modifier; the raw materials for preparing the organosilicon modifier comprise, by weight, 100-120 parts of acrylic acid and 150-200 parts of hexamethyldisilazane;
the preparation method of the organosilicon modifier comprises the following steps: and fully mixing acrylic acid and hexamethyldisilazane, introducing nitrogen to remove oxygen for 20-40 min, and reacting at 60 ℃ for 3-4 h to obtain the organosilicon modifier.
3. The composition of claim 2, wherein the first reducing agent and the second reducing agent are selected from one or more of sulfite, metabisulfite;
The first oxidant and the second oxidant are selected from one or more of persulfates and peroxides;
The phase inversion agent is one or two of hexaglycol dodecyl ether and nonylphenol polyoxyethylene ether; and/or
The cosolvent is one or two of para aminobenzoic acid, uratam, acetamide and urea.
4. A composition according to claim 3, wherein the first and second reducing agents are one or both of sodium sulfite and sodium metabisulfite; and/or
The first oxidant and the second oxidant are one or two of potassium persulfate and hydrogen peroxide.
5. A fluid loss additive, characterized in that the fluid loss additive is prepared from a composition according to any one of claims 2-4.
6. A method of preparing a fluid loss additive of claim 5, comprising the steps of:
s1, uniformly mixing white oil and the emulsifier of claim 1 to obtain an oil phase;
S2, dissolving acrylamide, a shearing-resistant monomer, a salt-resistant monomer, a cationic monomer, a cosolvent and a second oxidant in water, and regulating the pH value to be 6.5-6.8 to obtain a water phase;
s3, fully mixing the water phase and the oil phase, introducing nitrogen to remove oxygen, adding a second reducing agent, and reacting at 35-40 ℃ for 30-50 min to obtain emulsion;
S4, mixing the emulsion, the organic silicon modifier and the organic solvent, adding a first oxidant, introducing nitrogen to remove oxygen for 20-40 min, adding a first reducing agent, reacting at 35-40 ℃ for 30-50 min, and adding a phase inversion agent to obtain the fluid loss additive.
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| CA2589358A1 (en) * | 2004-12-09 | 2006-06-15 | The Lubrizol Corporation | Process of preparation of an additive and its use |
| CN104245878A (en) * | 2012-04-27 | 2014-12-24 | 阿克佐诺贝尔化学国际公司 | Foam or viscosified composition containing a chelating agent |
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| CN104250341B (en) * | 2013-06-28 | 2016-05-25 | 中国石油化工股份有限公司 | A kind of preparation method of sulfonic acid type acrylamide emulsion |
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| CN104893691B (en) * | 2015-05-27 | 2016-02-10 | 中国石油大学(北京) | Dimeracid-organic amine multipolymer and its preparation method and application and invert oil-emulsion drilling fluid are carried and are cut agent and drilling fluid |
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| CN113388377B (en) * | 2020-03-11 | 2022-09-13 | 中石化石油工程技术服务有限公司 | Filtrate reducer and preparation method thereof |
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| CA2589358A1 (en) * | 2004-12-09 | 2006-06-15 | The Lubrizol Corporation | Process of preparation of an additive and its use |
| CN104245878A (en) * | 2012-04-27 | 2014-12-24 | 阿克佐诺贝尔化学国际公司 | Foam or viscosified composition containing a chelating agent |
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