CN115612471B - Ternary composite silicon scale removing agent - Google Patents
Ternary composite silicon scale removing agent Download PDFInfo
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- CN115612471B CN115612471B CN202110798414.3A CN202110798414A CN115612471B CN 115612471 B CN115612471 B CN 115612471B CN 202110798414 A CN202110798414 A CN 202110798414A CN 115612471 B CN115612471 B CN 115612471B
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- 239000011206 ternary composite Substances 0.000 title claims abstract description 35
- 239000003795 chemical substances by application Substances 0.000 title claims description 13
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title abstract description 15
- 229910052710 silicon Inorganic materials 0.000 title abstract description 15
- 239000010703 silicon Substances 0.000 title abstract description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 78
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000002270 dispersing agent Substances 0.000 claims abstract description 22
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 20
- 238000005260 corrosion Methods 0.000 claims abstract description 16
- 230000007797 corrosion Effects 0.000 claims abstract description 16
- GYBINGQBXROMRS-UHFFFAOYSA-J tetrasodium;2-(1,2-dicarboxylatoethylamino)butanedioate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CC(C([O-])=O)NC(C([O-])=O)CC([O-])=O GYBINGQBXROMRS-UHFFFAOYSA-J 0.000 claims abstract description 12
- 229940080258 tetrasodium iminodisuccinate Drugs 0.000 claims abstract description 10
- YDONNITUKPKTIG-UHFFFAOYSA-N [Nitrilotris(methylene)]trisphosphonic acid Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CP(O)(O)=O YDONNITUKPKTIG-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000003112 inhibitor Substances 0.000 claims abstract description 7
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 23
- -1 aryl alkyl octadecanoic acid Chemical compound 0.000 claims description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 20
- 229920005862 polyol Polymers 0.000 claims description 19
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 18
- 235000021355 Stearic acid Nutrition 0.000 claims description 17
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 16
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 15
- 150000001491 aromatic compounds Chemical class 0.000 claims description 15
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 150000003077 polyols Chemical class 0.000 claims description 11
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical group CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 claims description 10
- 239000000377 silicon dioxide Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 239000003054 catalyst Substances 0.000 claims description 8
- 239000004094 surface-active agent Substances 0.000 claims description 8
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 230000007935 neutral effect Effects 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 239000000047 product Substances 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 6
- 238000002390 rotary evaporation Methods 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 229940098779 methanesulfonic acid Drugs 0.000 claims description 5
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 5
- 230000002194 synthesizing effect Effects 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 3
- KEQGZUUPPQEDPF-UHFFFAOYSA-N 1,3-dichloro-5,5-dimethylimidazolidine-2,4-dione Chemical compound CC1(C)N(Cl)C(=O)N(Cl)C1=O KEQGZUUPPQEDPF-UHFFFAOYSA-N 0.000 claims description 3
- HIXDQWDOVZUNNA-UHFFFAOYSA-N 2-(3,4-dimethoxyphenyl)-5-hydroxy-7-methoxychromen-4-one Chemical compound C=1C(OC)=CC(O)=C(C(C=2)=O)C=1OC=2C1=CC=C(OC)C(OC)=C1 HIXDQWDOVZUNNA-UHFFFAOYSA-N 0.000 claims description 3
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 3
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 3
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000005642 Oleic acid Substances 0.000 claims description 3
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000009835 boiling Methods 0.000 claims description 3
- XTHPWXDJESJLNJ-UHFFFAOYSA-N chlorosulfonic acid Substances OS(Cl)(=O)=O XTHPWXDJESJLNJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000012043 crude product Substances 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 239000005457 ice water Substances 0.000 claims description 3
- 229910017053 inorganic salt Inorganic materials 0.000 claims description 3
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 3
- 239000012263 liquid product Substances 0.000 claims description 3
- 238000000199 molecular distillation Methods 0.000 claims description 3
- 238000006386 neutralization reaction Methods 0.000 claims description 3
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 3
- 239000003208 petroleum Substances 0.000 claims description 3
- 238000006277 sulfonation reaction Methods 0.000 claims description 3
- 125000003944 tolyl group Chemical group 0.000 claims description 3
- 239000008096 xylene Substances 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims description 2
- 238000004090 dissolution Methods 0.000 abstract description 50
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 239000010779 crude oil Substances 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 23
- 150000001875 compounds Chemical class 0.000 description 21
- 239000000243 solution Substances 0.000 description 20
- 230000000694 effects Effects 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 229960001082 trimethoprim Drugs 0.000 description 4
- PQHYOGIRXOKOEJ-UHFFFAOYSA-N 2-(1,2-dicarboxyethylamino)butanedioic acid Chemical compound OC(=O)CC(C(O)=O)NC(C(O)=O)CC(O)=O PQHYOGIRXOKOEJ-UHFFFAOYSA-N 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 229940080260 iminodisuccinate Drugs 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- XTOQOJJNGPEPMM-UHFFFAOYSA-N o-(2-oxo-1,3,2$l^{5}-dioxaphosphinan-2-yl)hydroxylamine Chemical compound NOP1(=O)OCCCO1 XTOQOJJNGPEPMM-UHFFFAOYSA-N 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- FDGBQHCDMSYZRC-UHFFFAOYSA-N 2-hydroxy-2-oxo-1,3,2$l^{5}-dioxaphosphinan-4-amine Chemical compound NC1CCOP(O)(=O)O1 FDGBQHCDMSYZRC-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-M octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC([O-])=O QIQXTHQIDYTFRH-UHFFFAOYSA-M 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/528—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C303/00—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
- C07C303/32—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of salts of sulfonic acids
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/347—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups
- C07C51/353—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups by isomerisation; by change of size of the carbon skeleton
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/08—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/06—Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting, e.g. eliminating, the deposition of paraffins or like substances
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
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- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention relates to a ternary composite silicon-flooding scale remover. Mainly solves the problem that the scaling of the silicon scale and other oilfield scales of the existing ternary composite flooding system seriously affects the transportation of crude oil and the normal operation of oilfield production. The components and the proportion are as follows by weight percent: 10-15% of sodium hydroxide, 5-7.5% of sodium carbonate, 6-8% of tetrasodium iminodisuccinate, 8-12% of amino trimethylene phosphonic acid, 4-6% of dispersing agent, 0.3-1% of corrosion inhibitor 2000 and the balance of water. The ternary composite silicon-flooding scale remover is suitable for the ternary composite silicon-flooding scale remover, has high scale dissolution rate and low corrosiveness, is convenient for the transportation of crude oil, and is beneficial to the normal operation of oilfield production.
Description
Technical field:
the invention relates to the technical field of ternary composite scale removal in oil and gas field development, in particular to a ternary composite silicon scale removal agent and a preparation method thereof.
The background technology is as follows:
the ternary composite flooding system has the advantage of high oil displacement efficiency of alkali flooding due to the fact that a large amount of cheap alkali is introduced to replace a relatively expensive surfactant, and the characteristics of reducing adsorption retention loss, expanding sweep coefficient and enhancing oil displacement effect of polymer flooding are combined. Although the ternary composite flooding greatly improves the recovery ratio, the ternary composite flooding has rich experience and good effect in various indoor experiments and mine experiments, but also exposes some problems to be solved, namely serious scaling, and restricts the large-area popularization of the ternary composite flooding technology.
Along with the development of the oil field in China entering a high water content period successively, ternary composite flooding has emerged from the enhanced oil recovery technology and becomes a key means for improving the crude oil yield of the oil field. Ternary complex flooding is an oil displacement system of complex flooding (ASP) with multiple components such as alkali-surfactant-polymer, and is an important means of enhanced oil recovery. However, the scale formation of the ground system is serious due to the large amount of alkaline agent, which affects the normal production of the oil field. Oilfield scale is easy to generate in near-wellbore zones, wellbores, oil sleeves, water injection underground ground equipment, gathering pipelines and storage equipment, serious scaling problems can cause oil layer pore blocking, flow resistance is increased, water injection pressure is increased, water injection is difficult, the liquid production amount of an oil well is reduced, production energy consumption is increased, pump detection period is shortened, and phenomena of pump clamping and rod breakage of an oil pumping unit can occur, so that oilfield production cannot normally run.
There are 120 kinds of scale found at present, among which silicon scale has a hard texture and is difficult to handle. Silica scale is divided into silica scale and silicate scale. The silica scale can block the pore space of an oil layer, so that the water injection pressure is increased, the transportation of crude oil is also influenced, the pumping unit is blocked by a pump and broken rods to cause production stoppage in severe cases, the normal operation of oil field production is influenced, and huge economic loss is brought.
The invention comprises the following steps:
the invention aims to solve the problems that the transportation of crude oil and normal operation of oil field production are seriously affected by the scaling of oil field scales such as the silicon scales of the existing ternary compound flooding system in the background technology, and provides the ternary compound flooding silicon scale remover which has high scale dissolution rate and low corrosiveness, is convenient for the transportation of crude oil and is beneficial to the normal operation of oil field production.
The invention solves the problems by the following technical proposal: the ternary composite silicon-flooding scale remover comprises the following components in percentage by weight: 10-15% of sodium hydroxide, 5-7.5% of sodium carbonate, 6-8% of tetrasodium iminodisuccinate, 10-12% of amino trimethylene phosphonic acid, 4-6% of dispersing agent, 0.3-1% of corrosion inhibitor 2000 and the balance of water.
Preferably, the components and the proportions thereof are as follows by weight percent: 15% of sodium hydroxide, 5% of sodium carbonate, 6% of tetrasodium iminodisuccinate, 10% of aminotrimethylene phosphonic acid, 5% of dispersing agent, 0.3% of corrosion inhibitor 2000 and the balance of water.
The dispersing agent is a synthetic sulfonate oligomeric surfactant based on polyol as a connecting group, and the preparation method comprises the following steps:
(1) Synthesizing aryl alkyl octadecanoic acid, adding 0.01mol of catalyst and 0.5mol of aromatic compound into a reaction vessel, stirring under the protection of nitrogen, heating to 60 ℃, dropwise adding 0.2mol of oleic acid and 0.5mol of aromatic compound until the system is anaerobic, continuing to react for 6 hours after dropwise adding 1 hour, extracting an upper oil phase after the reaction is finished, washing with water to be neutral, removing water and aromatic compound by rotary evaporation to obtain an oily liquid product, and obtaining the aryl alkyl octadecanoic acid by molecular distillation;
(2) Synthesizing aryl alkyl octadecanoic acid polyol ester, adding aryl alkyl octadecanoic acid, polyol and a water carrying agent into a reaction container, heating to reflux under the protection of nitrogen, enabling reflux liquid to be subjected to water diversion through a water diversion device, reacting for 3 hours, extracting an upper oil phase after the reaction is finished, washing a product to be neutral, removing polyol and a catalyst, and rotationally evaporating water and aromatic compounds to obtain viscous product aryl alkyl octadecanoic acid polyol ester;
(3) Sulfonation reaction, namely adding 0.01mol of aryl alkyl octadecanoic acid polyol ester and 25mL of methylene dichloride into a reaction container, cooling to below 5 ℃ in an ice water bath, slowly dropwise adding a mixture of 20mL of methylene dichloride and 0.03mol of chlorosulfonic acid under electric stirring, keeping the temperature of the system below 5 ℃ in the whole process, reacting for 2 hours, and continuing to react for 2 hours at room temperature until no HCl is released, thus obtaining a milky yellow liquid;
(4) The neutralization reaction, under the stirring, adding the system with 10% NaOH solution drop to pH 7, obtaining pale yellow sticky matter, namely sulfonate crude product;
(5) Purifying to obtain the pure sulfonate oligomeric surfactant.
The purification process comprises the following steps: removing dichloromethane and water by rotary evaporation, dissolving with absolute ethyl alcohol, and filtering to remove inorganic salt; adding water to obtain ethanol-water solution of sulfonate, extracting with petroleum ether with boiling range of 60-90deg.C for several times until the oil phase is colorless to remove unsulfonated ester; and (3) rotationally evaporating the separated lower ethanol-water solution to obtain a paste, namely the pure sulfonate oligomeric surfactant.
Further, the aromatic compound in the A is benzene, toluene or xylene; the water-carrying agent is toluene; the polyol is pentaerythritol; the catalyst is methanesulfonic acid.
The structural diagram of the dispersant synthesized in the invention is as follows:
compared with the background technology, the invention has the following beneficial effects: the compound silicon scale remover prepared by the technical scheme of the invention has a scale dissolution rate of more than 85 percent and a corrosion rate of (0.634 g/m) for a ternary compound scale-removing sample (silicon scale content is more than 80 percent) 2 H) less than 1g/m 2 H. The compounded remover dissolves compact calcium carbonate, calcium sulfate and other scales wrapped outside the silicon dioxide, and then takes sodium hydroxide as a main component to dissolve the silicon dioxide, and the complexing agent and the dispersing agent are used for assisting to prevent the aggregation of the scales. The method has great application value in the technical field of ternary composite silicon-flooding scale removal.
Description of the drawings:
FIG. 1 is a graph showing the influence of different sodium hydroxide addition amounts on scale dissolution rate in the embodiment of the invention;
FIG. 2 is a graph showing the effect of different sodium carbonate addition amounts on scale dissolution rate in the examples of the present invention;
FIG. 3 is a graph showing the effect of the addition of different tetrasodium iminodisuccinate on scale dissolution rate in the examples of the present invention;
FIG. 4 is a graph showing the effect of different amounts of amino trimethoprim on scale dissolution rate in the examples of the present invention;
FIG. 5 is a graph showing the effect of different dispersant addition on scale dissolution rate in examples of the present invention.
The specific embodiment is as follows:
for the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention and the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The preparation method of the ternary composite silicon-flooding scale remover comprises the following steps:
s1, synthesizing a dispersing agent used in the following examples, wherein the dispersing agent comprises the following steps:
(1) Synthesis of aryl alkyl octadecanoic acid:
adding 0.01mol of catalyst methanesulfonic acid and 0.5mol of aromatic compound benzene into a reaction vessel, stirring under the protection of nitrogen, heating to 60 ℃, dropwise adding 0.2mol of oleic acid and 0.5mol of aromatic compound benzene when the system is anaerobic, continuing to react for 6 hours after dropwise adding 1 hour, extracting an upper oil phase after the reaction is finished, washing with water to be neutral, removing water and aromatic compound by rotary evaporation to obtain an oily liquid product, and obtaining aryl alkyl octadecanoic acid by molecular distillation;
(2) Synthesis of arylalkyl polyol octadecanoate:
adding aryl alkyl octadecanoic acid, pentaerythritol and toluene as a water-carrying agent into a reaction container, heating to reflux under the protection of nitrogen, enabling reflux liquid to be separated into water by a water separator, reacting for 3 hours, extracting an upper oil phase after the reaction is finished, washing a product to be neutral, removing polyol pentaerythritol and methanesulfonic acid, and rotationally evaporating water and aromatic compounds to obtain viscous product aryl alkyl octadecanoic acid polyol ester.
(3) Sulfonation reaction:
adding 0.01mol of aryl alkyl octadecanoic acid polyol ester and 25mL of dichloromethane into a reaction vessel, cooling to below 5 ℃ in an ice water bath, slowly dropwise adding a mixture of 20mL of dichloromethane and 0.03mol of chlorosulfonic acid under electric stirring, keeping the temperature of the system below 5 ℃ in the whole process, reacting for 2 hours, and continuing to react for 2 hours at room temperature until no HCl is released, thus obtaining a milky yellow liquid.
(4) Neutralization reaction:
under the electric stirring, the system is added with 10% NaOH solution drop by drop until the pH value is about 7, and the light yellow sticky substance, namely the crude product of sulfonate, is obtained.
(5) Purifying:
removing dichloromethane and water by rotary evaporation, dissolving with absolute ethyl alcohol, and filtering to remove inorganic salt; adding water to obtain ethanol-water solution of sulfonate, extracting with petroleum ether with boiling range of 60-90deg.C for several times until the oil phase is colorless to remove unsulfonated ester; and (3) rotationally evaporating the separated lower ethanol-water solution to obtain a paste, namely the pure sulfonate oligomeric surfactant.
The aromatic compound in A can be benzene, toluene or xylene; the water-carrying agent is toluene; the polyol is pentaerythritol; the catalyst is methanesulfonic acid.
S2, preparing the ternary composite silicon-flooding scale remover by using a synthesized dispersing agent, wherein the ternary composite silicon-flooding scale remover comprises the following components in percentage by weight: 10-15% of sodium hydroxide, 5-7.5% of sodium carbonate, 6-8% of tetrasodium iminodisuccinate, 10-12% of amino trimethylene phosphonic acid, 4-6% of dispersing agent, 0.3-1% of corrosion inhibitor 2000 and the balance of water.
S3, examining the influence of the dosage of each single agent suitable for the ternary compound flooding silica scale remover on the ternary compound flooding sample scale dissolution rate, and comprising the following steps:
(1) The influence of the sodium hydroxide dosage in the ternary compound silicon-flooding scale remover on the scale dissolution rate is examined.
(2) The influence of the sodium carbonate dosage in the ternary composite silicon-flooding scale remover on the scale dissolution rate is examined.
(3) The influence of the consumption of the tetrasodium iminodisuccinate on the scale dissolution rate in the ternary compound silicon-flooding scale remover is examined.
(4) The influence of the dosage of the aminotrimethylene phosphate on the scale dissolution rate in the ternary compound silicon-flooding scale remover is examined.
(5) The influence of the consumption of the dispersing agent in the ternary compound silicon-flooding scale remover on the scale dissolution rate is examined.
S4, examining the scale dissolution rate of the ternary composite flooding on-site scale sample for the ternary composite flooding silicon scale remover.
S5, examining the corrosion rate of the ternary composite silicon-flooding scale remover.
The following examples 1-5 examine the influence of the dosage of each single dose in the compound system on the scale dissolution rate, the scale sample is selected as a ternary compound scale-driving sample, the number is 1# (the analysis of inorganic components of the scale sample is shown in table 1), and the specific scale dissolution rate measuring method comprises the following steps: and dissolving 0.5g of on-site 1# scale sample in the 5ml ternary compound silicon-flooding scale remover system solution, fully mixing, placing the mixture at a constant temperature of 45 ℃ for 16 hours, and calculating the scale removal rate according to the mass ratio of the scale sample before and after dissolution.
TABLE 1
| Sample of | MgO，％ | SiO 2 ，％ | CaO，％ | Fe 2 O，％ | Al 2 O 3 ，％ | BaO，％ |
| 1 | 0.7469 | 85.2672 | 2.8871 | 1.2291 | 3.616 | 0.4890 |
Example 1 Effect of sodium hydroxide Single dose on Scale dissolution Rate applicable to ternary composite silicon-flooding Scale remover System
When the addition amount of sodium hydroxide is changed and is 5%, 10%, 15%, 20% and 25%, the influence of the addition amount of single sodium hydroxide on the scale dissolution rate is examined by adopting the scale dissolution rate measuring method, and the result is shown in figure 1.
From fig. 1, the influence of the addition amount of NaOH on the scale dissolution rate is examined through a single factor experiment, when the NaOH is increased from 5% to 10%, the curve is increased sharply, which shows that the sodium hydroxide has a remarkable effect on treating the scale sample of a high silicon system, and the scale dissolution rate can reach 71.6% at 15%. Later, although the curve rises, the rising trend is slow, and the solution compatibility and the solubility are comprehensively considered, and the addition of 10-15% of sodium hydroxide is preferable. Example 2 Effect of sodium carbonate Single dose addition on Scale dissolution Rate applicable to ternary composite silicon-flooding Scale remover System
The addition amount of sodium hydroxide is fixed to be 15%, the addition amount of sodium carbonate is changed, the influence of the addition amount of sodium carbonate to the scale dissolution rate of a compound system is examined, wherein the influence of the addition amount of sodium carbonate to the scale dissolution rate of the compound system is 2%, 2.5%, 5%, 7.5% and 10%, and the influence of different addition amounts of sodium carbonate to the scale dissolution rate is shown in figure 2.
As can be seen from FIG. 2, when sodium carbonate is added into 15% sodium hydroxide solution, the scale dissolution rate of the system can be improved by approximately 3%, after the sodium carbonate exceeds 5%, the scale dissolution rate of the system compounded with sodium hydroxide is basically unchanged, and the solution compatibility and the solubility are comprehensively considered, and the addition of sodium carbonate is preferably 5-7.5%.
Example 3 effect of single dose of tetrasodium iminodisuccinate on scale dissolution rate for use in ternary complex flooding silica scale remover systems.
The fixed main agent sodium hydroxide addition is 15%, the sodium carbonate addition is 5%, the influence of the iminodisuccinate tetrasodium addition (2%, 4%, 6%, 8% and 10%) on the scale dissolution rate of the compound system is examined, and the influence of different iminodisuccinate tetrasodium addition on the scale dissolution rate is shown in figure 3.
From fig. 3, it can be seen that the iminodisuccinate is increased from 4% to 6%, the curve is increased sharply, the scale dissolution rate of 6% is 81.9, the curve is increased gradually, the iminodisuccinate is taken as an auxiliary agent, the complexing and the dissolution rate of the compound system are high, the compatibility and the solubility of the solution are comprehensively considered, and the preferable addition amount of the iminodisuccinate is 6-8%.
Example 4: influence of single amino-trimethylene phosphoric acid dosage on scale dissolution rate in ternary composite silicon scale removing agent system
The fixed sodium hydroxide addition amount is 15%, the sodium carbonate addition amount is 5%, the influence of the amino-trimethylene-phosphoric acid addition amounts of 6%, 8%, 10%, 12% and 14% on the scale dissolution rate of the compound system is examined, and the influence of different amino-trimethylene-phosphoric acid addition amounts on the scale dissolution rate is shown in figure 4.
As can be seen from FIG. 4, as the content of the amino trimethoprim increases, the curve is in an ascending trend, the scale dissolution rate of the compound system is gradually increased, when the addition amount of the amino trimethoprim is increased to 10%, the scale dissolution rate can reach 81.8%, and thereafter, the ascending trend of the curve is slowed down, the solution compatibility and the solubility are comprehensively considered, and the optimal content of the amino trimethoprim is preferably 10-12%.
Example 5 Effect of dispersant Single dose addition on Scale dissolution Rate for ternary composite silicon-flooding Scale remover System
The fixed sodium hydroxide addition amount is 15%, the sodium carbonate addition amount is 5%, the influence of the dispersant addition amounts of 2%, 3%, 4%, 5% and 6% on the scale dissolution rate of the compound system is examined, and the influence of different dispersant addition amounts on the scale dissolution rate is shown in figure 5.
As can be seen from FIG. 5, as the addition amount of the dispersant increases, the curve is in an ascending trend, the scale dissolution rate is gradually increased, when the concentration of the dispersant increases to 4%, the scale dissolution rate can reach 80.9%, the speed is increased and then is slowed down, and the optimal content of the dispersant is preferably 4-6% in consideration of the compatibility and solubility of the solution.
Example 6 Scale dissolution Rate and Corrosion Rate of ternary composite silicon-flooding Scale remover
15% of sodium hydroxide, 5% of sodium carbonate, 6% of tetrasodium iminodisuccinate, 10% of amino trimethylene phosphonic acid, 4% of dispersing agent and 0.3% of corrosion inhibitor 2000 are added to prepare a ternary compound silicon-flooding scale remover solution, and the scale dissolution rate and the corrosion rate are examined.
a. Determination of scale dissolution rate of ternary composite silicon-flooding scale remover on scale sample
5ml of ternary composite silicon-flooding scale remover solution is taken to dissolve 0.5g of on-site No. 1, no. 2, no. 3, no. 4 and No. 5 scale samples, the content of the scale sample components is shown in Table 2, the solid-liquid mass ratio of a scale dissolution experiment is 1:10, the temperature is 45 ℃, and the time is 16 hours. The experimental results of the ternary composite silicon-flooding scale remover on the scale sample scale dissolution rate are shown in table 3.
TABLE 2
| Scale sample numbering | MgO，％ | SiO 2 ，％ | CaO，％ | Fe 2 O，％ | Al 2 O 3 ，％ | BaO，％ |
| 1# | 0.7469 | 85.2672 | 2.8871 | 1.2291 | 3.616 | 0.4890 |
| 2# | 1.8456 | 82.4376 | 6.0217 | 2.4587 | 1.002 | 1.4478 |
| 3# | 0.7628 | 84.3985 | 5.8113 | 2.9618 | 0.8964 | 0.627 |
| 4# | 1.3931 | 81.9647 | 3.5684 | 4.8546 | 2.5536 | 2.053 |
| 5# | 2.0245 | 82.7745 | 2.1986 | 0.3697 | 1.8134 | 3.2664 |
Remarks: the scale-like component content does not include adsorbed water, insoluble matter and organic matter
TABLE 3 Table 3
Note that: the 1# and 5# scale samples are ternary composite scale-dispelling samples, and the silicon scale content is more than 80%.
As can be seen from the table 3, the average scale dissolution rate of the ternary composite silicon-flooding scale remover on a site scale sample (the silicon scale content is more than 80%) can reach 86.07%.
b. Determination of corrosion rate of ternary composite silicon-flooding scale remover solution
And after selecting an N80 steel sheet for size measurement and weighing, placing the steel sheet in the remover according to the use amount of 20cm < 3 > of silicon scale remover per square centimeter of the surface area of the steel sheet, ensuring the joint between the whole surface of the steel sheet and the original liquid of the remover, placing the steel sheet in a 45 ℃ environment for reaction for 16 hours, cleaning the surface of the steel sheet by using clear water and absolute ethyl alcohol, weighing after the surface is dried, and calculating the corrosion rate. The corrosion rate measurements are shown in Table 4.
TABLE 4 Table 4
Note that: the test piece used for the corrosion rate measurement was N80, and the experimental temperature was 15 ℃.
As can be seen from Table 4, the corrosion rate of the ternary composite silicon-flooding scale remover of the invention is 0.6346g/m on average 2 H, less than 1g/m 2 H, meeting the field use requirement.
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 (4)
1. The ternary composite silicon-flooding scale remover comprises the following components in percentage by weight: 10-15% of sodium hydroxide, 5-7.5% of sodium carbonate, 6-8% of tetrasodium iminodisuccinate, 10-12% of amino trimethylene phosphonic acid, 4-6% of dispersing agent, 0.3-1% of corrosion inhibitor 2000 and the balance of water;
the dispersing agent is a synthetic sulfonate oligomeric surfactant based on polyol as a connecting group, and the preparation method comprises the following steps:
(1) Synthesizing aryl alkyl octadecanoic acid, adding 0.01mol of catalyst and 0.5mol of aromatic compound into a reaction vessel, stirring under the protection of nitrogen, heating to 60 ℃, dropwise adding 0.2mol of oleic acid and 0.5mol of aromatic compound until the system is anaerobic, continuing to react for 6 hours after dropwise adding 1 hour, extracting an upper oil phase after the reaction is finished, washing with water to be neutral, removing water and aromatic compound by rotary evaporation to obtain an oily liquid product, and obtaining the aryl alkyl octadecanoic acid by molecular distillation;
the aromatic compound is benzene, toluene or xylene;
(2) Synthesizing aryl alkyl octadecanoic acid polyol ester, adding aryl alkyl octadecanoic acid, polyol and a water carrying agent into a reaction container, heating to reflux under the protection of nitrogen, enabling reflux liquid to be subjected to water diversion through a water diversion device, reacting for 3 hours, extracting an upper oil phase after the reaction is finished, washing a product to be neutral, removing polyol and a catalyst, and rotationally evaporating water and aromatic compounds to obtain viscous product aryl alkyl octadecanoic acid polyol ester;
the polyol is pentaerythritol;
(3) Sulfonation reaction, namely adding 0.01mol of aryl alkyl octadecanoic acid polyol ester and 25mL of methylene dichloride into a reaction container, cooling to below 5 ℃ in an ice water bath, slowly dropwise adding a mixture of 20mL of methylene dichloride and 0.03mol of chlorosulfonic acid under electric stirring, keeping the temperature of the system below 5 ℃ in the whole process, reacting for 2 hours, and continuing to react for 2 hours at room temperature until no HCl is released, thus obtaining a milky yellow liquid;
(4) The neutralization reaction, under the stirring, adding the system with 10% NaOH solution drop to pH 7, obtaining pale yellow sticky matter, namely sulfonate crude product;
(5) Purifying to obtain a sulfonate oligomeric surfactant pure sample;
the purification process is as follows: removing dichloromethane and water by rotary evaporation, dissolving with absolute ethyl alcohol, and filtering to remove inorganic salt; adding water to obtain ethanol-water solution of sulfonate, extracting with petroleum ether with boiling range of 60-90deg.C for several times until the oil phase is colorless to remove unsulfonated ester; and (3) rotationally evaporating the separated lower ethanol-water solution to obtain a paste, namely the pure sulfonate oligomeric surfactant.
2. The silica scale remover according to claim 1, wherein: the components and the proportion are as follows by weight percent: 15% of sodium hydroxide, 5% of sodium carbonate, 6% of tetrasodium iminodisuccinate, 10% of aminotrimethylene phosphonic acid, 4% of dispersing agent, 0.3% of corrosion inhibitor 2000 and the balance of water.
3. The silica scale remover according to claim 1, wherein: the water-carrying agent is toluene.
4. The silica scale remover according to claim 1, wherein: the catalyst is methanesulfonic acid.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106905945A (en) * | 2017-03-04 | 2017-06-30 | 东北石油大学 | A kind of preparation method of the sulfonate oligomerization surfactant based on polyalcohol |
| CN108624312A (en) * | 2018-04-24 | 2018-10-09 | 长春市华泰石油科技开发有限公司 | Ternary composite drive well scale remover and its preparation method and application process |
| CN108641694A (en) * | 2018-04-27 | 2018-10-12 | 长江大学 | A kind of oil well descaling agent and preparation method thereof |
| CN109456743A (en) * | 2018-10-23 | 2019-03-12 | 金保全 | Oil field stratum supermolecule de-plugging permeation promoter, de-plugging anatonosis system and its application method |
| CN112334563A (en) * | 2018-06-01 | 2021-02-05 | 陶氏环球技术有限责任公司 | Silica scale inhibition using chelants blended with acid and alkylene oxide derived polymeric dispersants |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106905945A (en) * | 2017-03-04 | 2017-06-30 | 东北石油大学 | A kind of preparation method of the sulfonate oligomerization surfactant based on polyalcohol |
| CN108624312A (en) * | 2018-04-24 | 2018-10-09 | 长春市华泰石油科技开发有限公司 | Ternary composite drive well scale remover and its preparation method and application process |
| CN108641694A (en) * | 2018-04-27 | 2018-10-12 | 长江大学 | A kind of oil well descaling agent and preparation method thereof |
| CN112334563A (en) * | 2018-06-01 | 2021-02-05 | 陶氏环球技术有限责任公司 | Silica scale inhibition using chelants blended with acid and alkylene oxide derived polymeric dispersants |
| CN109456743A (en) * | 2018-10-23 | 2019-03-12 | 金保全 | Oil field stratum supermolecule de-plugging permeation promoter, de-plugging anatonosis system and its application method |
Non-Patent Citations (1)
| Title |
|---|
| 生物基磺酸盐寡聚表面活性剂的 合成与表面性能研究;王玲等;《精细石油化工进展》;第第18卷卷(第第3期期);第1-5页 * |
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