CN109681171B - Method for discharging liquid and producing gas by adopting solid foam water discharging agent composition - Google Patents
Method for discharging liquid and producing gas by adopting solid foam water discharging agent composition Download PDFInfo
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- CN109681171B CN109681171B CN201710969644.5A CN201710969644A CN109681171B CN 109681171 B CN109681171 B CN 109681171B CN 201710969644 A CN201710969644 A CN 201710969644A CN 109681171 B CN109681171 B CN 109681171B
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- 239000000203 mixture Substances 0.000 title claims abstract description 108
- 239000008259 solid foam Substances 0.000 title claims abstract description 59
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000007788 liquid Substances 0.000 title abstract description 24
- 238000007599 discharging Methods 0.000 title description 14
- 239000003795 chemical substances by application Substances 0.000 title description 12
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 65
- 229920000570 polyether Polymers 0.000 claims abstract description 65
- 239000000853 adhesive Substances 0.000 claims abstract description 55
- 230000001070 adhesive effect Effects 0.000 claims abstract description 55
- 239000007789 gas Substances 0.000 claims abstract description 50
- 239000013051 drainage agent Substances 0.000 claims abstract description 47
- -1 nitrogen-containing compound Chemical class 0.000 claims abstract description 35
- 150000003973 alkyl amines Chemical class 0.000 claims abstract description 32
- 150000007942 carboxylates Chemical class 0.000 claims abstract description 31
- 239000007787 solid Substances 0.000 claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 239000000945 filler Substances 0.000 claims abstract description 11
- 239000012530 fluid Substances 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims description 42
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 35
- 229920002401 polyacrylamide Polymers 0.000 claims description 22
- 239000004202 carbamide Substances 0.000 claims description 18
- 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
- 150000003839 salts Chemical class 0.000 claims description 15
- 229920002472 Starch Polymers 0.000 claims description 9
- 239000003921 oil Substances 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
- 229920002678 cellulose Polymers 0.000 claims description 8
- 239000001913 cellulose Substances 0.000 claims description 8
- 239000011230 binding agent Substances 0.000 claims description 6
- 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
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 claims description 3
- 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
- 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
- 229910001413 alkali metal ion Inorganic materials 0.000 claims description 2
- 150000004996 alkyl benzenes Chemical class 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
- 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
- 229910017464 nitrogen compound Inorganic materials 0.000 claims 1
- 150000002830 nitrogen compounds Chemical class 0.000 claims 1
- 238000011161 development Methods 0.000 abstract description 3
- 238000011068 loading method Methods 0.000 abstract description 2
- 235000019476 oil-water mixture Nutrition 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract description 2
- 239000008258 liquid foam Substances 0.000 abstract 1
- 239000006260 foam Substances 0.000 description 74
- 239000000243 solution Substances 0.000 description 64
- 238000000748 compression moulding Methods 0.000 description 21
- 239000007864 aqueous solution Substances 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 14
- 235000002639 sodium chloride Nutrition 0.000 description 14
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 12
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 11
- 229910052938 sodium sulfate Inorganic materials 0.000 description 11
- 235000011152 sodium sulphate Nutrition 0.000 description 11
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 9
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 8
- 235000019198 oils Nutrition 0.000 description 8
- 238000005187 foaming Methods 0.000 description 7
- 238000003756 stirring Methods 0.000 description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 6
- 235000017557 sodium bicarbonate Nutrition 0.000 description 6
- 239000011780 sodium chloride Substances 0.000 description 5
- 239000001509 sodium citrate Substances 0.000 description 5
- 239000004094 surface-active agent 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
- 238000011056 performance test Methods 0.000 description 4
- 229920000642 polymer Polymers 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
- 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
- BSVBQGMMJUBVOD-UHFFFAOYSA-N trisodium borate Chemical compound [Na+].[Na+].[Na+].[O-]B([O-])[O-] BSVBQGMMJUBVOD-UHFFFAOYSA-N 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 238000002360 preparation method Methods 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
- 239000003513 alkali Substances 0.000 description 2
- 125000003368 amide group Chemical group 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 230000033558 biomineral tissue development Effects 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 2
- 239000008398 formation water Substances 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
- 239000000126 substance Substances 0.000 description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 2
- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 239000004604 Blowing Agent Substances 0.000 description 1
- 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
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003945 anionic surfactant Substances 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
- MRUAUOIMASANKQ-UHFFFAOYSA-N cocamidopropyl betaine Chemical compound CCCCCCCCCCCC(=O)NCCC[N+](C)(C)CC([O-])=O MRUAUOIMASANKQ-UHFFFAOYSA-N 0.000 description 1
- 229940073507 cocamidopropyl betaine Drugs 0.000 description 1
- 150000001875 compounds Chemical class 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
- 230000008021 deposition Effects 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
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 125000000524 functional group Chemical group 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
- 238000005259 measurement Methods 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 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
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000012360 testing method Methods 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
- 239000004711 α-olefin Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- C09K8/588—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 polymers
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention relates to a method for draining liquid and producing gas by adopting a solid foam drainage agent composition. The method mainly solves the problems that the existing high-temperature and high-salinity deep well gas well has excessive liquid loading in the development process, so that the gas well has reduced production and even stops spraying, and the liquid foam drainage agent is difficult to fill. The invention adopts a liquid drainage gas production method, which comprises the following steps: 1) placing the foamed drainage agent composition into an aqueous gas well; 2) contacting the foamed drainage agent composition with a gas and water or oil water mixture in an aqueous gas well sufficient to form a foamed fluid, and then lifting the foamed fluid to the surface; the solid foam drainage agent composition comprises the following components: 1 part of an alkylamine polyether carboxylate; 0.1-50 parts of a long-chain polyether nitrogen-containing compound; 0.2-100 parts of solid filler; the technical scheme of 0-0.5 part of adhesive well solves the problem and can be used in the high-temperature and high-salinity deep well drainage and gas production industry.
。
Description
Technical Field
The invention relates to a method for draining liquid and producing gas by adopting a solid foam drainage agent composition, in particular to a method for draining liquid and producing gas by adopting a solid foam drainage agent composition for a high-temperature high-salinity deep 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. The 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 of the slipping deposition 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 a shaft, so that the accumulated liquid in the shaft is discharged, and the aim of water drainage and gas production is fulfilled.
The development of foam drainage agent since the sixties of the last century is carried out abroad, and surfactants such as sulfonate, benzene sulfonate, alkylphenol polyoxyethylene and the like are mostly selected. At present, a multi-component compound system is mostly adopted in the foam drainage agent for drainage and gas production, and in order to enhance the stability of single foam, auxiliaries such as alkali, alcohol, polymer, alkanolamide and the like are usually added into a formula to form enhanced foam. US7122509 reports a high temperature foam drainage agent formulation, which adopts a research idea of neutralization of anionic surfactant and amine to improve the temperature resistance of the system. 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 with foam discharging and sterilizing functions, a hydrophobic chain is a hydrophobic segment in substituted naphthalene ring, benzene ring or natural oil ester, and the foam fluid has strong chlorine resistance and condensate oil resistance and good corrosion inhibition performance. However, the molecular structure of the polymer contains amide groups which are sensitive to high temperature, so that the polymer has poor adaptability to gas wells with the temperature of more than 100 ℃. China is a technology for researching foam drainage and gas production from the last 80 years, and a patent CN102212348A discloses a salt-resistant and methanol-resistant foam drainage agent, which comprises the following components in percentage by weight: 20-40% of cocamidopropyl betaine, 45-65% of amine oxide, 5-20% of alpha-olefin sulfonate, 5-15% of triethanolamine, 0.2-2% of fluorocarbon surfactant and 0-5% of methanol, wherein the mineralization resistance can reach 18 ten thousand, but the fluorocarbon surfactant is contained in the agent, so that not only is the cost greatly improved, but also the environmental impact is large.
The foam water discharging agent is mainly a water aqua, has the limitation of a plurality of factors such as transportation, storage and the like, and is troublesome to fill on site. CN 105062453A discloses a solid foam drainage agent for gas fields and a preparation method thereof, wherein 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 gas well is reduced in yield, even stops spraying and is difficult to fill liquid due to excessive liquid loading in the development process of the existing high-temperature high-salinity deep well gas well, and provides a method for draining liquid and producing gas by adopting a solid foam water discharging agent composition, in particular a method for draining liquid and producing gas by adopting the solid foam water discharging agent composition in a high-temperature high-salinity deep well, which is used for draining water and producing gas in the gas well, can carry liquid with high efficiency and has good temperature resistance, salt resistance, foaming performance and liquid carrying capacity.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a method for draining liquid and producing gas by using a solid foam drainage agent composition comprises the following steps:
(1) throwing the solid foam drainage agent composition into an aqueous gas well;
(2) contacting the solid foamed drainage agent composition with sufficient gas and water or a gas and oil water mixture in an aqueous gas well to form a foamed fluid, and then lifting the foamed fluid to the surface;
the solid high-temperature-resistant high-salinity foam drainage agent composition for drainage and gas recovery comprises the following components in parts by mass:
(1)1 part of an alkylamine polyether carboxylate;
(2) 0.1-50 parts of a 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 general molecular formula of the alkylamine polyether carboxylate is preferably:
wherein R is1Is C8～C20Any one of the alkyl groups of (a); m, n, p and q are any number of 0-20 independently, and m + n is more than or equal to 1. Further, m + p is preferably any number of 1 to 5, n + q is preferably any number of 5 to 15, and X is at least one of an alkali metal ion and an ammonium ion.
In the above technical solution, the molecular general formula of the long-chain polyether nitrogen-containing compound is preferably:
in the formula (II), R1Is 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 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; further, R1Preferably C10～C20Alkyl or C10～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 technical solution, the solid filler is preferably at least one of inorganic oxysalt, metal halide, organic carboxylic acid and salt thereof, urea, and biuret; further preferably: the solid filler is preferably at least one of carbonate, bicarbonate, sulfate, phosphate, borate, metal halide, formate, acetate, tartaric acid and salt, citric acid and salt, phthalic acid and salt, gallic acid and salt, urea, biuret, and the like; the adhesive is 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 water discharging agent composition of the invention has no special requirement on water during preparation, and can be deionized water or water containing inorganic mineral substances, and the water containing the inorganic mineral substances can be tap water, oil field formation water or oil field injection water.
In the above technical scheme, the preparation method of the solid foam drainage agent composition comprises the following steps:
when the binder is not equal to 0 part, the method for preparing the solid foam drainage agent composition preferably includes the steps of:
(1) uniformly mixing the alkylamine polyether carboxylate, the long-chain polyether nitrogen-containing compound and the solid filler according to the required mass portion to obtain a mixture;
(2) adding water to 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 the solid foam drainage agent composition;
when the binder is equal to 0 part, the method for preparing the solid foam drainage agent composition preferably includes the steps of:
(1) uniformly mixing the alkylamine polyether carboxylate, the long-chain polyether nitrogen-containing compound and the 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 drainage agent composition.
In the technical scheme, the temperature of the gas well is as high as 180 ℃, and the salinity of formation water applicable to the gas well is 0-250000 mg/L.
The foam drainage agent composition prepared by the method has good compatibility, and can also contain other treating agents commonly used in the field, such as surfactants, polymers, alkali and other oil extraction aids.
The thermal decomposition temperature of the alkylamine polyether carboxylate and the long-chain polyether nitrogen-containing compound in the foam water discharging agent composition is 200 ℃, and the thermal decomposition temperature is not hydrolyzed in aqueous solution; and secondly, the composition simultaneously has functional groups with both negative and positive amphiprotics and nonionic fragments, and multiple hydrophilic groups increase the salt resistance on one hand, and increase the amount of bound water and bound water carried by the foaming agent on the other hand, so that the foam liquid carrying amount is increased, and the liquid separation is slowed down, so that the composition can be applied to the high-temperature high-salinity deep well drainage and gas production process at the temperature of 180 ℃.
By adopting the technical scheme of the invention, the foam performance test is carried out on the foam water discharging agent according to SY/T6465-2000 foamer evaluation method for foam water discharging and gas production, the foaming height is more than 140mm, the liquid carrying amount is more than 140mL, the high-temperature aging is carried out for 24h at 180 ℃ in 0-250,000 mg/L salinity saline, the foam foaming height and the water discharging performance change rate are less than 5%, and the foam water discharging agent has good temperature resistance, salt resistance, foaming performance and liquid carrying capacity, and achieves good 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 polyether carboxylate, 20 g of long-chain polyether nitrogen-containing compound and sodium sulfate under normal temperature and normal pressure
Mixing 30 g of the mixture evenly 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 polyether carboxylate, 50 g of long-chain polyether nitrogen-containing compound and sodium sulfate
30 g of sodium carbonate, 10 g of sodium bicarbonate, 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, 50 g of alkylamine polyether carboxylate, 10 g of long-chain polyether nitrogen-containing compound and urea
10 g and 1 g of citric acid are uniformly mixed 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, 20 g of alkylamine polyether carboxylate, 20 g of long-chain polyether nitrogen-containing compound and urea
20 g, 5 g of sodium chloride and 1 g of sodium citrate, and uniformly mixing 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) 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, 20 g of alkylamine polyether carboxylate, 10 g of long-chain polyether nitrogen-containing compound and hydrogen carbonate
7 g of sodium, 1 g of sodium borate, 2 g of sodium tartrate and 1 g of biuret are uniformly mixed 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, 10 g of alkylamine polyether carboxylate, 30 g of long-chain polyether nitrogen-containing compound and urea
30 g and 1 g of sodium bicarbonate are uniformly mixed to obtain a mixture;
(2) adding 0.1 g of cellulose and 1.0 g of water into the mixture, and stirring the mixture until the cellulose 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-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 polyether carboxylate, 50 g of long-chain polyether nitrogen-containing compound and sodium sulfate
70 g 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) 10 g of alkylamine polyether carboxylate, 20 g of long-chain polyether nitrogen-containing compound and sodium sulfate under normal temperature and normal pressure
Mixing 30 g of the mixture evenly 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) 10 g of alkylamine polyether carboxylate, 20 g of long-chain polyether nitrogen-containing compound and sodium sulfate under normal temperature and normal pressure
Mixing 30 g of the mixture evenly 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) 10 g of alkylamine polyether carboxylate, 20 g of long-chain polyether nitrogen-containing compound and sodium sulfate under normal temperature and normal pressure
Mixing 30 g of the mixture evenly 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) 10 g of alkylamine polyether carboxylate, 20 g of long-chain polyether nitrogen-containing compound and sodium sulfate under normal temperature and normal pressure
Mixing 30 g of the mixture evenly 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 100,000, 200,000, and 250,000mg/L mineralization degrees, respectively, at room temperature and pressure to prepare 5000mg/L aqueous solutions.
[ example 13 ]
The height of the foam starting point after the foam drainage agent was measured and the height of the foam after 5 minutes was measured according to SY/T6465-2000 evaluation method for foam drainage and gas blowing agent, and the results are shown in Table 2.
4000mL/min of nitrogen was continuously introduced into the aqueous foam drainage 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.
The test was carried out using a pressure-resistant and acid-resistant aging apparatus, and after aging at 180 ℃ for 24 hours, the properties such as the initial foaming height, the foam height after 5 minutes, and the liquid carrying amount after 15 minutes were measured again, and the results are shown in Table 2.
[ COMPARATIVE EXAMPLE 1 ]
(1) Using 30 g of alkylamine polyether carboxylate in [ example 1 ], adding no long-chain polyether nitrogen-containing compound, and uniformly mixing with 30 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 100,000, 200,000, 250,000mg/L mineralized simulated aqueous solutions to prepare 5000mg/L solutions, and then the initial height of the foam drainage agent and the height of the foam after 5 minutes were measured and tested for foam drainage performance, the results of which are shown in Table 3.
[ COMPARATIVE EXAMPLE 2 ]
(1) Using 55 g of alkylamine polyether carboxylate in example 2, without adding long-chain polyether nitrogen-containing compound, 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-S2;
(4) 1 g of FS-S2 solid was weighed and dissolved in 100,000, 200,000, 250,000mg/L mineralized simulated aqueous solutions to prepare 5000mg/L solutions, and then the initial height of the foam drainage agent and the height of the foam after 5 minutes were measured and tested for foam drainage performance, the results of which are shown in Table 3.
[ COMPARATIVE EXAMPLE 3 ]
(1) Using 60 g of alkylamine polyether carboxylate 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 100,000, 200,000, 250,000mg/L mineralized simulated aqueous solutions to prepare 5000mg/L solutions, and then the initial height of the foam drainage agent and the height of the foam after 5 minutes were measured and tested for foam drainage performance, the results of which are shown in Table 3.
[ COMPARATIVE EXAMPLE 4 ]
(1) Using 40 g of alkylamine polyether carboxylate 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 100,000, 200,000, 250,000mg/L mineralized simulated aqueous solutions to prepare 5000mg/L solutions, and then the initial height of the foam drainage agent and the height of the foam after 5 minutes were measured and tested for foam drainage performance, the results of which are shown in Table 3.
[ COMPARATIVE EXAMPLE 5 ]
(1) Using 30 g of alkylamine polyether carboxylate 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 100,000, 200,000, 250,000mg/L mineralized simulated aqueous solutions to prepare 5000mg/L solutions, and then the initial height of the foam drainage agent and the height of the foam after 5 minutes were measured and tested for foam drainage performance, the results of which are shown in Table 3.
[ COMPARATIVE EXAMPLE 6 ]
(1) Using 40 g of alkylamine polyether carboxylate in [ example 6 ], adding no long-chain polyether nitrogen-containing compound, and uniformly mixing with 30 g of urea and 1 g of sodium bicarbonate at normal temperature and normal pressure to obtain a mixture;
(2) adding 0.1 g of cellulose and 1.0 g of water into the mixture, and stirring the mixture until the cellulose 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-S6;
(4) 1 g of FS-S6 solid was weighed and dissolved in 100,000, 200,000, 250,000mg/L mineralized simulated aqueous solutions to prepare 5000mg/L solutions, and then the initial height of the foam drainage agent and the height of the foam after 5 minutes were measured and tested for foam drainage performance, the results of which are shown in Table 3.
[ COMPARATIVE EXAMPLE 7 ]
(1) Using 30 g of the long-chain polyether nitrogen-containing compound in example 1, adding no alkylamine polyether carboxylate, and uniformly mixing the long-chain polyether nitrogen-containing compound and 30 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-S7;
(4) 1 g of FS-S7 solid was weighed and dissolved in 100,000, 200,000, 250,000mg/L mineralized simulated aqueous solutions to prepare 5000mg/L solutions, and then the initial height of the foam drainage agent and the height of the foam after 5 minutes were measured and tested for foam drainage performance as shown in Table 4 (example 13).
[ COMPARATIVE EXAMPLE 8 ]
(1) Using 55 g of the long-chain polyether nitrogen-containing compound in example 2, adding no alkylamine polyether carboxylate, 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-S8;
(4) 1 g of FS-S8 solid was weighed and dissolved in 100,000, 200,000, 250,000mg/L mineralized simulated aqueous solutions to prepare 5000mg/L solutions, and then the initial height of the foam drainage agent and the height of the foam after 5 minutes were measured and tested for foam drainage performance as shown in Table 4 (example 13).
[ COMPARATIVE EXAMPLE 9 ]
(1) 60 g of the long-chain polyether nitrogen-containing compound in the [ example 3 ] is used, and 10 g of urea and 1 g of citric acid are uniformly mixed at normal temperature and normal pressure without adding alkylamine polyether carboxylate 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-S9;
(4) 1 g of FS-S9 solid was weighed and dissolved in 100,000, 200,000, 250,000mg/L mineralized simulated aqueous solutions to prepare 5000mg/L solutions, and then the initial height of the foam drainage agent and the height of the foam after 5 minutes were measured and tested for foam drainage performance as shown in Table 4 (example 13).
[ COMPARATIVE EXAMPLE 10 ]
(1) Using 40 g of long-chain polyether containing nitrogen in [ example 4 ], adding no alkylamine polyether carboxylate 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-S10;
(4) 1 g of FS-S10 solid was weighed and dissolved in 100,000, 200,000, 250,000mg/L mineralized simulated aqueous solutions to prepare 5000mg/L solutions, and then the initial height of the foam was measured and the height of the foam after 5 minutes was measured, and the results of the foam drainage performance test were shown in Table 4, as in example 13.
[ COMPARATIVE EXAMPLE 11 ]
(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 polyether carboxylate 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-S11;
(4) 1 g of FS-S11 solid was weighed and dissolved in 100,000, 200,000, 250,000mg/L mineralized simulated aqueous solutions to prepare 5000mg/L solutions, and then the initial height of the foam was measured and the height of the foam after 5 minutes was measured, and the results of the foam drainage performance test were shown in Table 4, as in example 13.
[ COMPARATIVE EXAMPLE 12 ]
(1) 40 g of the long-chain polyether nitrogen-containing compound in example 6 was used, and 30 g of urea and 1 g of sodium bicarbonate were uniformly mixed at normal temperature and pressure without adding alkylamine polyether carboxylate to obtain a mixture;
(2) adding 0.1 g of cellulose and 1.0 g of water into the mixture, and stirring the mixture until the cellulose 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-S12;
(4) 1 g of FS-S12 solid was weighed and dissolved in 100,000, 200,000, 250,000mg/L mineralized simulated aqueous solutions to prepare 5000mg/L solutions, and then the initial height of the foam was measured and the height of the foam after 5 minutes was measured, and the results of the foam drainage performance test were shown in Table 4, as in example 13.
Composition component Structure in the examples of Table 1
Foam Properties of the foam drainage agent compositions in the examples of Table 2
TABLE 3 foaming Properties of the foam drainage agent compositions of comparative examples 1 to 6
TABLE 4 foaming Properties of the foam drainage agent compositions of comparative examples 7 to 12
Claims (8)
1. A method of drainage and gas production using a solid foam drainage agent composition comprising the steps of:
(1) throwing the solid foam drainage agent composition into an aqueous gas well;
(2) contacting the solid foamed drainage agent composition with a mixture of gas and water or oil and water in an aqueous gas well sufficient to form a foamed fluid, and then lifting the foamed fluid to the surface;
the solid foam drainage agent composition comprises the following components in parts by weight:
(1)1 part of an alkylamine polyether carboxylate;
(2) 0.1-50 parts of a long-chain polyether nitrogen-containing compound;
(3) 0.2-100 parts of solid filler;
(4)0 to 0.5 parts of a binder, and not including 0 part;
the molecular formula of the alkylamine polyether carboxylate is as follows:
wherein R is1Is C8～C20Any one of the alkyl groups of (a); m, n, p and q are any number of 0-20, m + n is more than or equal to 1, X is at least one of alkali metal ions or ammonium ions, m + p is any number of 1-5, and n + q is any number of 5-15.
2. The method of claim 1, wherein the long chain polyether nitrogen compound has the general molecular formula:
wherein, R is1Is C10～C26Fatty group of (2)Or C10～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 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.
3. The method of drainage and gas production using a solid foam drainage agent composition of claim 2, wherein R is1Is C10～C20Alkyl of (C)10～C20Of an alkylbenzene of, R7Is C2H4Or C3H6。
4. The method of claim 2 wherein z is greater than 0.
5. 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 and its salt, urea, and biuret.
6. The method of draining gas using a solid foam drainage agent composition according to claim 1, characterized in that the solid filler is at least one of carbonate, bicarbonate, sulfate, 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.
7. The method of claim 1, wherein the binder is at least one of dextrin, epoxy resin, polyacrylamide, starch, cellulose, polyethylene glycol.
8. The method for draining and producing gas by using the solid foam drainage agent composition according to any one of claims 1 to 7, wherein when the binder is not equal to 0 part, the method for preparing the solid foam drainage agent composition comprises the following steps:
(1) uniformly mixing the alkylamine polyether carboxylate, the long-chain polyether nitrogen-containing compound and the solid filler according to the required mass portion to obtain a mixture;
(2) adding water to the adhesive until the adhesive 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 pressing and forming to obtain the solid foam drainage agent composition.
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