CN109681172B - Method for discharging liquid and producing gas by adopting solid foam discharging agent composition - Google Patents
Method for discharging liquid and producing gas by adopting solid foam discharging agent composition Download PDFInfo
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- CN109681172B CN109681172B CN201710969678.4A CN201710969678A CN109681172B CN 109681172 B CN109681172 B CN 109681172B CN 201710969678 A CN201710969678 A CN 201710969678A CN 109681172 B CN109681172 B CN 109681172B
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- 239000000203 mixture Substances 0.000 title claims abstract description 96
- 238000007599 discharging Methods 0.000 title claims abstract description 58
- 239000008259 solid foam Substances 0.000 title claims abstract description 58
- 239000007788 liquid Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000006260 foam Substances 0.000 claims abstract description 86
- 239000000853 adhesive Substances 0.000 claims abstract description 54
- 230000001070 adhesive effect Effects 0.000 claims abstract description 54
- 239000007789 gas Substances 0.000 claims abstract description 51
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- -1 nitrogen-containing compound Chemical class 0.000 claims abstract description 34
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 32
- 229920000570 polyether Polymers 0.000 claims abstract description 32
- 150000003973 alkyl amines Chemical class 0.000 claims abstract description 31
- 239000007787 solid Substances 0.000 claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 239000000945 filler Substances 0.000 claims abstract description 11
- 238000005201 scrubbing Methods 0.000 claims abstract description 10
- 239000012530 fluid Substances 0.000 claims abstract description 9
- 235000019476 oil-water mixture Nutrition 0.000 claims abstract description 3
- 238000002156 mixing Methods 0.000 claims description 42
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 29
- 229920002401 polyacrylamide Polymers 0.000 claims description 24
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 18
- 239000002202 Polyethylene glycol Substances 0.000 claims description 17
- 229920001223 polyethylene glycol Polymers 0.000 claims description 17
- 239000004202 carbamide Substances 0.000 claims description 15
- 150000003839 salts Chemical class 0.000 claims description 11
- 229920002472 Starch Polymers 0.000 claims description 9
- 239000008107 starch Substances 0.000 claims description 9
- 235000019698 starch Nutrition 0.000 claims description 9
- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 claims description 8
- 239000013051 drainage agent Substances 0.000 claims description 7
- 239000011230 binding agent Substances 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- 229920002678 cellulose Polymers 0.000 claims description 4
- 239000001913 cellulose Substances 0.000 claims description 4
- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 claims description 4
- 229910001507 metal halide Inorganic materials 0.000 claims description 4
- 150000005309 metal halides Chemical class 0.000 claims description 4
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 claims description 4
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 3
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 3
- 125000000129 anionic group Chemical group 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000011975 tartaric acid Substances 0.000 claims description 3
- 235000002906 tartaric acid Nutrition 0.000 claims description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 claims description 2
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 claims description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 2
- 229920001353 Dextrin Polymers 0.000 claims description 2
- 239000004375 Dextrin Substances 0.000 claims description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical compound [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 claims description 2
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 125000003118 aryl group Chemical group 0.000 claims description 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 2
- 235000019425 dextrin Nutrition 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 229940074391 gallic acid Drugs 0.000 claims description 2
- 235000004515 gallic acid Nutrition 0.000 claims description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 125000000547 substituted alkyl group Chemical group 0.000 claims description 2
- 125000005156 substituted alkylene group Chemical group 0.000 claims description 2
- 229910021653 sulphate ion Inorganic materials 0.000 claims 1
- 239000002253 acid Substances 0.000 abstract description 7
- 238000011161 development Methods 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract description 2
- 238000009825 accumulation Methods 0.000 abstract 1
- 239000008258 liquid foam Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 61
- 238000000748 compression moulding Methods 0.000 description 20
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 13
- 239000007864 aqueous solution Substances 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 13
- 229910052938 sodium sulfate Inorganic materials 0.000 description 13
- 235000011152 sodium sulphate Nutrition 0.000 description 13
- 238000011056 performance test Methods 0.000 description 12
- 235000002639 sodium chloride Nutrition 0.000 description 10
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
- 235000019198 oils Nutrition 0.000 description 8
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 6
- 239000001509 sodium citrate Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 4
- 229910021538 borax Inorganic materials 0.000 description 4
- HELHAJAZNSDZJO-OLXYHTOASA-L sodium L-tartrate Chemical compound [Na+].[Na+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O HELHAJAZNSDZJO-OLXYHTOASA-L 0.000 description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 4
- 239000001433 sodium tartrate Substances 0.000 description 4
- 229960002167 sodium tartrate Drugs 0.000 description 4
- 235000011004 sodium tartrates Nutrition 0.000 description 4
- 235000010339 sodium tetraborate Nutrition 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- BSVBQGMMJUBVOD-UHFFFAOYSA-N trisodium borate Chemical compound [Na+].[Na+].[Na+].[O-]B([O-])[O-] BSVBQGMMJUBVOD-UHFFFAOYSA-N 0.000 description 4
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 3
- 235000017557 sodium bicarbonate Nutrition 0.000 description 3
- 239000004094 surface-active agent Substances 0.000 description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 2
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 125000003368 amide group Chemical group 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 239000006265 aqueous foam Substances 0.000 description 1
- 229940077388 benzenesulfonate Drugs 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
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 235000015165 citric acid Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- GOMCKELMLXHYHH-UHFFFAOYSA-L dipotassium;phthalate Chemical compound [K+].[K+].[O-]C(=O)C1=CC=CC=C1C([O-])=O GOMCKELMLXHYHH-UHFFFAOYSA-L 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 235000011083 sodium citrates Nutrition 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- HRXKRNGNAMMEHJ-UHFFFAOYSA-K trisodium citrate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O HRXKRNGNAMMEHJ-UHFFFAOYSA-K 0.000 description 1
- 229940038773 trisodium citrate Drugs 0.000 description 1
Images
Classifications
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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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a method for discharging liquid and producing gas by adopting a solid foam discharging agent composition. The method mainly solves the problems that the yield of the gas well is reduced, even the gas well stops spraying and the liquid foam discharging agent is difficult to fill due to excessive liquid accumulation in the development process of the existing acid gas well. The invention adopts a liquid drainage gas production method, which comprises the following steps: 1) throwing the foam scrubbing agent composition into an aqueous gas well; 2) contacting the foam scrubbing composition with a gas and water or oil-water mixture in an aqueous gas well to form a foamed fluid, and then lifting the foamed fluid to the surface; the solid foam discharging agent composition comprises the following components: 1 part of alkylamine having a general molecular formula shown in formula (I); 0.1-50 parts of a long-chain polyether nitrogen-containing compound with a molecular general formula shown in a formula (II); 0.2-100 parts of solid filler; the technical scheme of 0-0.5 part of the adhesive well solves the problem and can be used in the drainage and gas production process of a gas well.
Description
Technical Field
The invention relates to a method for discharging liquid and producing gas by adopting a solid foam discharging agent composition, in particular to a method for discharging liquid and producing gas by adopting a solid foam discharging agent composition in an acid gas well.
Background
With the enhancement of the exploitation strength of the gas field, the water output of the gas field becomes a key problem restricting the normal production of the gas well. Foam drainage gas production is a drainage gas production technology which is rapidly developed at home and abroad in recent years, and has the advantages of simple equipment, convenience in construction, low cost, wide applicable well depth range, no influence on normal production of gas wells and the like. Foam drainage is to inject foam drainage agent into a well through an oil pipe or an oil casing ring, and foam with certain stability is generated under the stirring of airflow. The liquid phase slipped and deposited in the pipe is changed into foam, the relative density of fluid at the lower part in the pipe is changed, and the continuously produced gas phase displacement foam flows out of the shaft, so that the accumulated liquid in the shaft is discharged, and the purposes of water drainage and gas production are achieved.
The preparation of the foam scrubbing agent is started from the sixties of the last century abroad, and surfactants such as sulfonate, benzene sulfonate, alkylphenol polyoxyethylene and the like are mostly selected. At present, most of foam discharging agents for water drainage and gas production adopt a multi-component compound system, and in order to enhance the stability of single foam, auxiliaries such as alkali, alcohol, polymers, alkanolamide and the like are usually added into a formula to form reinforced foam. US20120279715 reports a foam fluid for increasing oil yield by recovering gas in a gas well, which is an amido group-containing quaternary ammonium salt surfactant having foam discharging and sterilizing functions, and a hydrophobic chain is a hydrophobic segment in substituted naphthalene ring, benzene ring or natural oil ester, so that the foam fluid has strong chlorine resistance and condensate oil resistance, and also has good corrosion inhibition performance. However, since the molecular structure contains an amide group which is sensitive to high temperature, the compound is easily hydrolyzed under acidic conditions.
The foam water discharging agent is mainly an aqueous agent, has the limitation of a plurality of factors such as transportation, storage and the like, and is troublesome to fill on site. CN105062453A discloses a solid foam drainage agent for gas fields and a preparation method thereof, the raw materials comprise sodium dodecyl sulfate, alkylphenol polyoxyethylene, polyacrylamide, trisodium citrate and thiourea, and the solid foam drainage agent has good foam drainage performance. However, sodium dodecyl sulfate contains a sulfate bond, and the temperature resistance is insufficient.
Disclosure of Invention
The invention aims to solve the technical problems that the yield of an existing acid gas well is reduced, even the gas well stops spraying and liquid filling is difficult due to excessive liquid loading in the development process of the existing acid gas well, and provides a method for discharging liquid and producing gas by adopting a solid foam discharging agent composition, in particular a method for discharging liquid and producing gas by adopting the solid foam discharging agent composition in the acid gas well.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a method for discharging liquid and producing gas by adopting a solid foam discharging agent composition comprises the following steps:
(1) feeding the solid foam-scrubbing agent composition into an aqueous gas well;
(2) contacting the solid foam-drain composition with gas and water or a gas and oil-water mixture in an aqueous gas well to form a foam fluid, and then lifting the foam fluid to the surface;
the solid foam scrubbing agent composition comprises the following components in parts by weight:
(1)1 part of alkylamine;
(2) 0.1-50 parts of long-chain polyether nitrogen-containing compound
(3) 0.2-100 parts of solid filler;
(4)0 to 0.5 parts of adhesive.
In the above technical solution, the molecular general formula of the alkylamine is preferably:
wherein R is1Is C6~C16Any one of the alkyl groups of (1).
In the above technical solution, the molecular general formula of the long-chain polyether nitrogen-containing compound is preferably:
wherein R is1Is C10~C26Fatty radical or C of10~C26An aromatic group of (a); y is 0-20, and z is 0-60; r4、R5Is independently selected from C1~C5Alkyl of (C)1~C5Any one of the substituted alkyl groups of (a); r6、R7Is independently selected from C1~C5Alkylene group of (a), substituted alkylene group ofThe method is as follows; y is selected from anionic groups which render the molecule of formula (II) electrically neutral; further, R1Preferably C10~C20Alkyl of (C)10~C20Of an alkylbenzene of, R7Preferably C2H4Or C3H6Z is preferably greater than 0;
in the above-mentioned embodiments, Y may be any anionic group which renders the general molecular formula (II) electrically neutral, and for example, Y is preferably, but not limited to, -COO—、-SO3 —、-HPO4 —Is more preferably-COO—、-SO3 —At least one of (1).
In the above-described embodiment, the solid filler is preferably at least one of an inorganic oxoacid salt, a metal halide, an organic carboxylic acid and a salt thereof, urea, and biuret, and more preferably at least one of a carbonate, a bicarbonate, a sulfate, a phosphate, a borate, a metal halide, a formate, an acetate, tartaric acid and a salt thereof, citric acid and a salt thereof, phthalic acid and a salt thereof, gallic acid and a salt thereof, urea, and biuret; the binder is preferably at least one of dextrin, epoxy resin, polyacrylamide, starch, cellulose, polyethylene glycol and the like.
In the above technical solution, the solid filler is preferably at least one of sodium carbonate, sodium bicarbonate, sodium borate, sodium chloride, sodium acetate, tartaric acid, sodium tartrate, citric acid, sodium citrate, potassium phthalate, urea, and biuret.
In the above technical solution, the binder is preferably at least one of polyacrylamide, starch, and polyethylene glycol.
The foam scrubbing agent composition of the present invention has no special requirement on water during preparation, and may be deionized water or water containing inorganic mineral matter, and the water containing inorganic mineral matter may be tap water, oil field stratum water or oil field injection water.
In the above technical solution, when the binder is not equal to 0 part, the preparation method of the solid foam discharging agent composition preferably includes the following steps:
(1) uniformly mixing alkylamine, long-chain polyether nitrogen-containing compound and solid filler according to the required mass portion to obtain a mixture;
(2) adding water into the adhesive until the adhesive is completely dissolved to obtain an adhesive solution;
(3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and pressing and forming to obtain a solid foam drainage agent, namely the solid foam drainage agent composition;
when the binder is equal to 0 part, the preparation method of the solid foam-exhaust agent composition preferably comprises the following steps:
(1) uniformly mixing alkylamine, long-chain polyether nitrogen-containing compound and solid filler according to the required mass portion to obtain a mixture;
(2) and then the mixture is pressed and molded to prepare the solid foam discharging agent composition.
In the technical scheme, the method is preferably applied to the gas well with the pH value of 3-7.
The foam scrubbing agent composition prepared by the method has good compatibility, and can also contain other treating agents commonly used in the field, such as surfactant, polymer, alkali and other oil extraction aids.
According to the foam discharging agent composition, the nitrogen-containing compounds of alkylamine and long-chain polyether are protonated under the acidic condition of pH, the separation pressure between foam liquid membranes is increased, the amount of bound water and bound water carried by the foam agent is increased, the liquid carrying amount of the foam is increased, and the liquid separation is slowed down, so that the foam discharging agent composition can be applied to the acid drainage gas production process.
By adopting the technical scheme of the method, the foam performance test is respectively carried out on the foam discharging agent under the conditions of pH 3, 5 and 7 according to SY/T6465-2000 foamer evaluation method for foam drainage and gas production, the foaming height is more than 140mm, the liquid carrying amount is more than 140mL, and the foam discharging agent has good acid resistance, foaming performance and liquid carrying capacity, and obtains better technical effects.
The invention is further illustrated by the following examples.
Drawings
FIG. 1 shows a liquid carrying amount measuring apparatus (the height of a jacket vessel is 1 m) for simulating measurement of liquid carrying amount of gas produced by liquid discharge.
Detailed Description
In order to better understand the present invention, the following examples are further provided to illustrate the present invention, but the present invention is not limited to the following examples.
[ example 1 ]
(1) 10 g of alkylamine, 25 g of long-chain polyether nitrogen-containing compound and 35 g of sodium sulfate are mixed under normal temperature and normal pressure
Homogenizing to obtain a mixture;
(2)0.1 g of polyacrylamide is added with 1 g of water and stirred until the polyacrylamide is completely dissolved, so as to obtain an adhesive solution;
(3) and (3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and pressing and forming to obtain the solid foam drainage rod FS-1, wherein the component structure of the solid foam drainage rod FS-1 is detailed in Table 1.
[ example 2 ]
(1) Under normal temperature and pressure, 5 g of alkylamine, 50 g of long-chain polyether nitrogen-containing compound, 30 g of sodium sulfate, 10 g of sodium carbonate, 30 g of sodium bicarbonate and 30 g of urea are uniformly mixed to obtain a mixture;
(2) 0.5 g of polyethylene glycol is added with 2 g of water and stirred until the polyethylene glycol is completely dissolved, so as to obtain an adhesive solution;
(3) and (3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain the solid foam drainage rod FS-2, wherein the component structure of the solid foam drainage rod FS-2 is detailed in table 1.
[ example 3 ]
(1) Under normal temperature and pressure, evenly mixing 50 g of alkylamine, 10 g of long-chain polyether nitrogen-containing compound, 10 g of urea and 1 g of citric acid to obtain a mixture;
(2) adding 0.1 g of starch and 2 g of water into the mixture, and stirring the mixture until the starch is completely dissolved to obtain an adhesive solution;
(3) and (3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain the solid foam drainage rod FS-3, wherein the component structure of the solid foam drainage rod FS-3 is detailed in table 1.
[ example 4 ]
(1) Under normal temperature and pressure, evenly mixing 20 g of alkylamine, 20 g of long-chain polyether nitrogen-containing compound, 20 g of urea, 5 g of sodium chloride and 1 g of sodium citrate to obtain a mixture;
(2) 0.01 g of cellulose is added with 0.5 g of water and stirred until the cellulose is completely dissolved, thus obtaining an adhesive solution;
(3) and (3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain the solid foam drainage rod FS-4, wherein the component structure of the solid foam drainage rod FS-4 is detailed in Table 1.
[ example 5 ]
(1) Under normal temperature and pressure, evenly mixing 20 g of alkylamine, 10 g of long-chain polyether nitrogen-containing compound, 7 g of sodium bicarbonate, 1 g of sodium borate, 2 g of sodium tartrate and 1 g of biuret to obtain a mixture;
(2)0.1 g of polyethylene glycol is added with 1.0 g of water and stirred until the polyethylene glycol is completely dissolved, so as to obtain an adhesive solution;
(3) and (3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain the solid foam drainage rod FS-5, wherein the component structure of the solid foam drainage rod FS-5 is detailed in table 1.
[ example 6 ]
(1) Under normal temperature and pressure, evenly mixing 10 g of alkylamine, 25 g of long-chain polyether nitrogen-containing compound and 35 g of sodium sulfate to obtain a mixture;
(2)0.1 g of polyacrylamide is added with 1.0 g of water and stirred until the polyacrylamide is completely dissolved, so as to obtain an adhesive solution;
(3) and (3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain the solid foam drainage rod FS-6, wherein the component structure of the solid foam drainage rod FS-6 is detailed in Table 1.
[ example 7 ]
(1) Under normal temperature and pressure, 1 g of alkylamine, 50 g of long-chain polyether nitrogen-containing compound, 70 g of sodium sulfate and 30 g of urea are uniformly mixed to obtain a mixture;
(2) 0.2 g of polyethylene glycol is added with 1.5 g of water and stirred until the polyethylene glycol is completely dissolved, so as to obtain an adhesive solution;
(3) and (3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain a solid foam drainage rod FS-7, wherein the component structure of the solid foam drainage rod FS-7 is detailed in Table 1.
[ example 8 ]
(1) Under normal temperature and pressure, evenly mixing 10 g of alkylamine, 25 g of long-chain polyether nitrogen-containing compound and 35 g of sodium sulfate to obtain a mixture;
(2)0.1 g of polyacrylamide is added with 1 g of water and stirred until the polyacrylamide is completely dissolved, so as to obtain an adhesive solution;
(3) and (3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain a solid foam drainage rod FS-8, wherein the component structure of the solid foam drainage rod FS-8 is detailed in Table 1.
[ example 9 ]
(1) Under normal temperature and pressure, evenly mixing 10 g of alkylamine, 25 g of long-chain polyether nitrogen-containing compound and 35 g of sodium sulfate to obtain a mixture;
(2)0.1 g of polyacrylamide is added with 1 g of water and stirred until the polyacrylamide is completely dissolved, so as to obtain an adhesive solution;
(3) and (3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain the solid foam drainage rod FS-9, wherein the component structure of the solid foam drainage rod FS-9 is detailed in table 1.
[ example 10 ]
(1) Under normal temperature and pressure, evenly mixing 10 g of alkylamine, 25 g of long-chain polyether nitrogen-containing compound and 35 g of sodium sulfate to obtain a mixture;
(2)0.1 g of polyacrylamide is added with 1 g of water and stirred until the polyacrylamide is completely dissolved, so as to obtain an adhesive solution;
(3) and (3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain the solid foam drainage rod FS-10, wherein the component structure of the solid foam drainage rod FS-10 is detailed in Table 1.
[ example 11 ]
(1) Under normal temperature and pressure, evenly mixing 10 g of alkylamine, 25 g of long-chain polyether nitrogen-containing compound and 35 g of sodium sulfate to obtain a mixture;
(2) the above samples were press molded to produce solid foam drainage bars FS-11, the composition of which is detailed in Table 1.
[ example 12 ]
The solid foam drainage agents of examples 1 to 11 were dissolved in simulated aqueous solutions of pH 3, 5, and 7, respectively, at room temperature and under normal pressure to prepare aqueous solutions of 5000 mg/L.
[ example 13 ]
The initial height of foam of the foam scrubbing agent and the height of foam after 5 minutes were measured according to SY/T6465-.
4000mL/min of nitrogen was continuously introduced into the aqueous foam discharging agent solution, and the amount of foam carried over a period of 15 minutes was measured, and the results are shown in Table 2. The liquid carrying amount measuring apparatus used is shown in FIG. 1.
[ COMPARATIVE EXAMPLE 1 ]
(1) Using 35 g of alkylamine in example 1, without adding long-chain polyether nitrogen-containing compound, mixing with 35 g of sodium sulfate at normal temperature and normal pressure to obtain a mixture;
(2)0.1 g of polyacrylamide is added with 1 g of water and stirred until the polyacrylamide is completely dissolved, so as to obtain an adhesive solution;
(3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain a solid foam drainage rod FS-S1;
(4) 1 g of FS-S1 solid was weighed and dissolved in simulated aqueous solutions of pH 3, 5 and 7 to prepare solutions of 5000mg/L, and the initial height of foam of the foam discharging agent and the height of foam after 5 minutes were measured as in example 13, and the results of the foam discharging performance test were shown in Table 3.
[ COMPARATIVE EXAMPLE 2 ]
(1) 55 g of alkylamine in example 2 is used, and 30 g of sodium sulfate, 10 g of sodium carbonate, 30 g of sodium bicarbonate and 30 g of urea are uniformly mixed under normal temperature and normal pressure without adding a long-chain polyether nitrogen-containing compound to obtain a mixture;
(2) 0.5 g of polyethylene glycol is added with 2 g of water and stirred until the polyethylene glycol is completely dissolved, so as to obtain an adhesive solution;
(3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain a solid foam drainage rod FS-S2;
(4) 1 g of FS-S2 solid was weighed and dissolved in simulated aqueous solutions of pH 3, 5 and 7 to prepare solutions of 5000mg/L, and the initial height of foam of the foam discharging agent and the height of foam after 5 minutes were measured as in example 13, and the results of the foam discharging performance test were shown in Table 3.
[ COMPARATIVE EXAMPLE 3 ]
(1) Using 60 g of alkylamine in example 3, adding no long-chain polyether nitrogen-containing compound, and uniformly mixing with 10 g of urea and 1 g of citric acid at normal temperature and normal pressure to obtain a mixture;
(2) adding 0.1 g of starch and 2 g of water into the mixture, and stirring the mixture until the starch is completely dissolved to obtain an adhesive solution;
(3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain a solid foam drainage rod FS-S3;
(4) 1 g of FS-S3 solid was weighed and dissolved in simulated aqueous solutions of pH 3, 5 and 7 to prepare solutions of 5000mg/L, and the initial height of foam of the foam discharging agent and the height of foam after 5 minutes were measured as in example 13, and the results of the foam discharging performance test were shown in Table 3.
[ COMPARATIVE EXAMPLE 4 ]
(1) Using 40 g of alkylamine in example 4, adding no long-chain polyether nitrogen-containing compound, and uniformly mixing with 20 g of urea, 5 g of sodium chloride and 1 g of sodium citrate at normal temperature and normal pressure to obtain a mixture;
(2) 0.01 g of polyacrylamide is added with 0.5 g of water and stirred until the polyacrylamide is completely dissolved, so as to obtain an adhesive solution;
(3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain a solid foam drainage rod FS-S4;
(4) 1 g of FS-S4 solid was weighed and dissolved in simulated aqueous solutions of pH 3, 5 and 7 to prepare solutions of 5000mg/L, and the initial height of foam of the foam discharging agent and the height of foam after 5 minutes were measured as in example 13, and the results of the foam discharging performance test were shown in Table 3.
[ COMPARATIVE EXAMPLE 5 ]
(1) Using 30 g of alkylamine in example 5, adding no long-chain polyether nitrogen-containing compound, and uniformly mixing with 7 g of sodium bicarbonate, 1 g of sodium borate, 2 g of sodium tartrate and 1 g of biuret at normal temperature and normal pressure to obtain a mixture;
(2)0.1 g of polyethylene glycol is added with 1.0 g of water and stirred until the polyethylene glycol is completely dissolved, so as to obtain an adhesive solution;
(3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain a solid foam drainage rod FS-S5;
(4) 1 g of FS-S5 solid was weighed and dissolved in simulated aqueous solutions of pH 3, 5 and 7 to prepare solutions of 5000mg/L, and the initial height of foam of the foam discharging agent and the height of foam after 5 minutes were measured as in example 13, and the results of the foam discharging performance test were shown in Table 3.
[ COMPARATIVE EXAMPLE 6 ]
(1) Using 35 g of the long-chain polyether nitrogen-containing compound in example 1, adding no alkylamine, and uniformly mixing with 35 g of sodium sulfate at normal temperature and normal pressure to obtain a mixture;
(2)0.1 g of polyacrylamide is added with 1 g of water and stirred until the polyacrylamide is completely dissolved, so as to obtain an adhesive solution;
(3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain a solid foam drainage rod FS-S6;
(4) 1 g of FS-S6 solid was weighed and dissolved in simulated aqueous solutions of pH 3, 5 and 7 to prepare solutions of 5000mg/L, and the initial height of foam of the foam discharging agent and the height of foam after 5 minutes were measured as in example 13, and the results of the foam discharging performance test were shown in Table 4.
[ COMPARATIVE EXAMPLE 7 ]
(1) Using 55 g of the long-chain polyether nitrogen-containing compound in example 2, adding no alkylamine, and uniformly mixing with 30 g of sodium sulfate, 10 g of sodium carbonate, 30 g of sodium bicarbonate and 30 g of urea at normal temperature and normal pressure to obtain a mixture;
(2) 0.5 g of polyethylene glycol is added with 2 g of water and stirred until the polyethylene glycol is completely dissolved, so as to obtain an adhesive solution;
(3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain a solid foam drainage rod FS-S7;
(4) 1 g of FS-S7 solid was weighed and dissolved in simulated aqueous solutions of pH 3, 5 and 7 to prepare solutions of 5000mg/L, and the initial height of foam of the foam discharging agent and the height of foam after 5 minutes were measured as in example 13, and the results of the foam discharging performance test were shown in Table 4.
[ COMPARATIVE EXAMPLE 8 ]
(1) 60 g of the long-chain polyether nitrogen-containing compound in example 3 was used, and 10 g of urea and 1 g of citric acid were uniformly mixed at normal temperature and pressure without adding alkylamine to obtain a mixture;
(2) adding 0.1 g of starch and 2 g of water into the mixture, and stirring the mixture until the starch is completely dissolved to obtain an adhesive solution;
(3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain a solid foam drainage rod FS-S8;
(4) 1 g of FS-S8 solid was weighed and dissolved in simulated aqueous solutions of pH 3, 5 and 7 to prepare solutions of 5000mg/L, and the initial height of foam of the foam discharging agent and the height of foam after 5 minutes were measured as in example 13, and the results of the foam discharging performance test were shown in Table 4.
[ COMPARATIVE EXAMPLE 9 ]
(1) 40 g of long-chain polyether containing nitrogen in example 4 was used, and 20 g of urea, 5 g of sodium chloride and 1 g of sodium citrate were uniformly mixed at normal temperature and pressure without adding an alkylamine compound to obtain a mixture;
(2) 0.01 g of polyacrylamide is added with 0.5 g of water and stirred until the polyacrylamide is completely dissolved, so as to obtain an adhesive solution;
(3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain a solid foam drainage rod FS-S9;
(4) 1 g of FS-S9 solid was weighed and dissolved in simulated aqueous solutions of pH 3, 5 and 7 to prepare solutions of 5000mg/L, and the initial height of foam of the foam discharging agent and the height of foam after 5 minutes were measured as in example 13, and the results of the foam discharging performance test were shown in Table 4.
[ COMPARATIVE EXAMPLE 10 ]
(1) 30 g of the long-chain polyether nitrogen-containing compound in the example 5 is used, and is uniformly mixed with 7 g of sodium bicarbonate, 1 g of sodium borate, 2 g of sodium tartrate and 1 g of biuret at normal temperature and normal pressure without adding alkylamine to obtain a mixture;
(2)0.1 g of polyethylene glycol is added with 1.0 g of water and stirred until the polyethylene glycol is completely dissolved, so as to obtain an adhesive solution;
(3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain a solid foam drainage rod FS-S10;
(4) 1 g of FS-S10 solid was weighed and dissolved in simulated aqueous solutions of pH 3, 5 and 7 to prepare solutions of 5000mg/L, and the initial height of foam of the foam discharging agent and the height of foam after 5 minutes were measured as in example 13, and the results of the foam discharging performance test were shown in Table 4.
[ COMPARATIVE EXAMPLE 11 ]
(1) Using 35 g of the long-chain polyether nitrogen-containing compound in [ example 6 ], adding no alkylamine, and uniformly mixing with 35 g of sodium sulfate at normal temperature and normal pressure to obtain a mixture; (ii) a
(2)0.1 g of polyacrylamide is added with 1 g of water and stirred until the polyacrylamide is completely dissolved, so as to obtain an adhesive solution;
(3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain a solid foam drainage rod FS-S11;
(4) 1 g of FS-S11 solid was weighed and dissolved in simulated aqueous solutions of pH 3, 5 and 7 to prepare solutions of 5000mg/L, and the initial height of foam of the foam discharging agent and the height of foam after 5 minutes were measured as in example 13, and the results of the foam discharging performance test were shown in Table 4.
Composition component Structure in the examples of Table 1
Foam properties of the foam remover compositions in the examples of Table 2
TABLE 3 foam Properties of the foam remover compositions of comparative examples 1-5
TABLE 4 foam Properties of foam remover compositions of comparative examples 6-11
Claims (8)
1. A method for discharging liquid and producing gas by adopting a solid foam discharging agent composition comprises the following steps:
(1) feeding the solid foam-scrubbing agent composition into an aqueous gas well;
(2) contacting the solid foam-drain composition with gas and water or a gas and oil-water mixture in an aqueous gas well to form a foam fluid, and then lifting the foam fluid to the surface;
the solid foam scrubbing agent composition comprises the following components in parts by weight:
(1)1 part of alkylamine;
(2) 0.1-50 parts of a long-chain polyether nitrogen-containing compound;
(3) 0.2-100 parts of solid filler;
(4) 0-0.5 parts of adhesive;
the molecular general formula of the alkylamine is as follows:
wherein R is1Is C6~C16Any one of the alkyl groups of (a);
the molecular general formula of the long-chain polyether nitrogen-containing compound is as follows:
wherein, R is1Is C10~C26Fatty radical or C of10~C26An aromatic group of (a); y is 0-20, z is 0-60, and y and z are not 0 at the same time; r4、R5Is independently selected from C1~C5Alkyl of (C)1~C5Any one of the substituted alkyl groups of (a); r6、R7Is independently selected from C1~C5Alkylene of (C)1~C5Any one of the substituted alkylene groups of (a); y is selected from anionic groups which render the molecule of formula (II) electrically neutral.
2. The method of claim 1, wherein R is selected from the group consisting of1Is C10~C20Alkyl of (C)10~C20Alkyl phenyl of R7Is C2H4Or C3H6。
3. The method of liquid discharge gas production using a solid foam-remover composition according to claim 1, characterized in that z is greater than 0.
4. The method of claim 1, wherein the solid filler is at least one of an inorganic oxyacid salt, a metal halide, an organic carboxylic acid or a salt thereof, urea, and biuret.
5. The method of discharging liquid and producing gas with the solid foam-remover composition as claimed in claim 1, characterized in that the solid filler is at least one of carbonate, bicarbonate, sulphate, phosphate, borate, metal halide, formate, acetate, tartaric acid and its salts, citric acid and its salts, phthalic acid and its salts, gallic acid and its salts, urea, biuret.
6. The method of claim 1, wherein the binder is at least one of dextrin, epoxy resin, polyacrylamide, starch, cellulose, and polyethylene glycol.
7. The method for discharging and producing gas by using the solid foam discharging agent composition according to any one of claims 1 to 6, wherein when the binder is not equal to 0 part, the method for preparing the solid foam discharging agent composition comprises the following steps:
(1) uniformly mixing alkylamine, long-chain polyether nitrogen-containing compound and solid filler according to the required mass portion to obtain a mixture;
(2) adding water into the adhesive until the adhesive is completely dissolved to obtain an adhesive solution;
(3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and pressing and forming to prepare a solid foam drainage rod, namely the solid foam drainage agent composition;
when the adhesive is equal to 0 part, the preparation method of the solid foam discharging agent composition comprises the following steps:
(1) uniformly mixing alkylamine, long-chain polyether nitrogen-containing compound and solid filler according to the required mass portion to obtain a mixture;
(2) and then the mixture is pressed and formed to prepare the solid foam discharging agent composition.
8. The method for liquid drainage and gas production by using the solid foam drainage agent composition according to any one of claims 1 to 6, wherein the pH value of the aqueous gas well is 3 to 7.
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