CN109681168B - Method for discharging liquid and producing gas by adopting oil-resistant foam water discharging agent composition - Google Patents
Method for discharging liquid and producing gas by adopting oil-resistant foam water discharging agent composition Download PDFInfo
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- 239000006260 foam Substances 0.000 title claims abstract description 119
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 239000000203 mixture Substances 0.000 title claims abstract description 59
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 45
- 238000007599 discharging Methods 0.000 title claims abstract description 42
- 239000007788 liquid Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 57
- 229920000570 polyether Polymers 0.000 claims abstract description 57
- 239000007789 gas Substances 0.000 claims abstract description 55
- 235000019198 oils Nutrition 0.000 claims abstract description 37
- SRSXLGNVWSONIS-UHFFFAOYSA-M benzenesulfonate Chemical compound [O-]S(=O)(=O)C1=CC=CC=C1 SRSXLGNVWSONIS-UHFFFAOYSA-M 0.000 claims abstract description 30
- 229940077388 benzenesulfonate Drugs 0.000 claims abstract description 30
- 150000003973 alkyl amines Chemical class 0.000 claims abstract description 29
- 239000013051 drainage agent Substances 0.000 claims abstract description 29
- -1 nitrogen-containing compound Chemical class 0.000 claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 claims abstract description 16
- 238000005201 scrubbing Methods 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 claims abstract description 8
- 239000002105 nanoparticle Substances 0.000 claims abstract description 7
- 235000019476 oil-water mixture Nutrition 0.000 claims abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- KWLMIXQRALPRBC-UHFFFAOYSA-L hectorite Chemical compound [Li+].[OH-].[OH-].[Na+].[Mg+2].O1[Si]2([O-])O[Si]1([O-])O[Si]([O-])(O1)O[Si]1([O-])O2 KWLMIXQRALPRBC-UHFFFAOYSA-L 0.000 claims description 3
- 229910000271 hectorite Inorganic materials 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 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
- 125000003118 aryl group Chemical group 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 125000002947 alkylene group Chemical group 0.000 claims 2
- 150000001450 anions Chemical group 0.000 claims 1
- 239000005871 repellent Substances 0.000 claims 1
- 230000002940 repellent Effects 0.000 claims 1
- 238000011161 development Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- 238000009825 accumulation Methods 0.000 abstract 1
- 239000007921 spray Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 35
- 239000003921 oil Substances 0.000 description 31
- 238000005303 weighing Methods 0.000 description 14
- 230000033558 biomineral tissue development Effects 0.000 description 13
- 239000005543 nano-size silicon particle Substances 0.000 description 11
- 238000005187 foaming Methods 0.000 description 8
- 239000004094 surface-active agent Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 230000002209 hydrophobic effect Effects 0.000 description 5
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical group FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 125000000524 functional group Chemical group 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 125000003368 amide group Chemical group 0.000 description 2
- 125000000129 anionic group Chemical group 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- 239000008398 formation water Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) 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
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229960003237 betaine Drugs 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 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
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 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
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000011056 performance test 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
- 229920000642 polymer Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000008259 solid foam Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 125000000547 substituted alkyl group Chemical group 0.000 description 1
- 125000005156 substituted alkylene group Chemical group 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 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
- C09K8/594—Compositions used in combination with injected gas, e.g. CO2 orcarbonated gas
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- 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)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Abstract
The invention relates to a method for draining liquid and producing gas by adopting an oil-resistant foam drainage agent composition. The foam drainage agent mainly solves the problems of shaft bottom liquid accumulation, gas well production reduction and even spray stoppage caused by insufficient foam oil resistance and poor foam drainage performance of the existing foam drainage agent in the development process of a condensate oil and gas well. The invention adopts a liquid drainage gas production method, which comprises the following steps: 1) injecting the foam scrubbing agent composition or foam scrubbing agent composition solution into an aqueous gas well; 2) fully contacting the foam discharging agent composition or the foam discharging agent composition solution with a gas and water or oil-water mixture in the water-containing gas well to form a foam fluid, and then lifting the foam fluid to the ground; wherein the foam scrubbing agent composition comprises the following components: 1 part of alkylamine polyether benzene sulfonate; 0.1-50 parts of a long-chain polyether nitrogen-containing compound; the technical scheme of 0-10 parts of nano particles well solves the problem and can be used in the drainage and gas production industry of gas wells.
。
Description
Technical Field
The invention relates to a method for discharging liquid and producing gas by adopting an oil-resistant foam discharging agent composition, in particular to a method for discharging liquid and producing gas by aiming at a foam discharging agent composition of a gas well containing condensate oil.
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.
However, foams are "oil sensitive" in that after the crude oil contacts the foam, it spreads or emulsifies in gas-liquid and films, entering the foam structure under the action of external forces and interfacial tension, causing the foam to lose stability upon contact with oil.
The most oil-resistant foam system reported at present is a fluorocarbon surfactant, and because hydrogen atoms in a hydrophobic chain of the fluorocarbon surfactant are replaced by fluorine atoms, the hydrophobic chain of the fluorocarbon surfactant is hydrophobic and oleophobic, so that the oil resistance of the foam is improved. However, fluorocarbon surfactants are expensive to produce, have poor biocompatibility, may cause a series of environmental and safety problems when applied on a large scale, and thus cannot replace hydrocarbon surfactants despite their excellent performance.
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 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 with foam discharging and sterilizing functions, a hydrophobic chain is a hydrophobic segment in substituted naphthalene ring, benzene ring or natural oil ester, and has strong chlorine resistance and condensate oil resistance, 20% of condensate oil content is reduced from 86.8% to 51.0% and 50% of condensate oil content is reduced to 29% under the condition that the nitrogen injection speed is 7/min. However, the molecular structure contains amide groups which are sensitive to high temperature, so that the gas well adaptability of the gas well above 100 ℃ is poor.
China is a technology for researching foam drainage and gas production from the last 80 years, and the literature 'research and application of foam performance of novel efficient salt-tolerant oil-resistant solid foam drainage agent KHD 580A' reports that the condensate oil content of an oil-resistant foam drainage agent is 20% and the drainage amount is reduced by 23%.
Disclosure of Invention
The invention aims to solve the technical problems that the oil resistance and the temperature resistance of foam formed by the existing foam drainage agent are insufficient in the development process of a gas well, and the drainage performance of the foam is poor, so that liquid is accumulated at the bottom of the well, the yield of the gas well is reduced, and even the gas well stops spraying.
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 an oil-proof foam discharging agent composition comprises the following steps:
(1) injecting the foam scrubbing agent composition or foam scrubbing agent composition solution into an aqueous gas well;
(2) fully contacting the foam discharging agent composition or the foam discharging agent composition solution with gas and water or a gas and oil-water mixture in an aqueous gas well to form foam fluid, and then lifting the foam fluid to the ground;
the oil-resistant foam drainage agent composition for oil-resistant drainage gas recovery comprises the following components in parts by mass:
(1)1 part of alkylamine polyether benzene sulfonate;
(2) 0.1-50 parts of a long-chain polyether nitrogen-containing compound;
(3) 0-10 parts of nano particles.
In the above technical solution, the general molecular formula of the alkylamine polyether benzenesulfonate 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:
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 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 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 technical solution, the nanoparticle is preferably at least one of nano silica, calcium carbonate, and hectorite, and more preferably nano silica.
The foam water discharging agent composition provided by 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 oil-resistant foam drainage agent composition preferably comprises the following steps:
and uniformly mixing the alkylamine polyether benzene sulfonate, the long-chain polyether nitrogen-containing compound and the nano particles with water according to the required mass parts to obtain the oil-resistant foam drainage agent composition for drainage and gas production.
In the technical scheme, the content of the condensate oil in the water-containing gas well is 0-30%.
The alkylamine polyether benzenesulfonate, a long-chain polyether nitrogen-containing compound, which is a key active ingredient of the foam drainage agent composition of the method of the present invention, is known to those skilled in the art to be available in various forms for transportation and storage or for use in the field, for example, in a non-aqueous solid form, or in an aqueous paste form, or in an aqueous solution form; the water solution form comprises a form of preparing a concentrated solution by using water and a form of directly preparing a foam water discharging agent with concentration required by on-site oil displacement; the water is not particularly required, and can be deionized water or water containing inorganic minerals, and the water containing the inorganic minerals can be tap water, formation water of an oil and gas field or injection water of the oil and gas field.
The foam water discharging agent composition of the method has good compatibility, and can also contain other treating agents commonly used in the field.
The alkylamine polyether benzene sulfonate and the long-chain polyether nitrogen-containing compound in the foam discharging agent composition contain multi-hydrophilic-group functional groups, on one hand, the multi-hydrophilic-group functional groups enable the amount of bound water and bound water carried by the foaming agent to be increased, the liquid carrying amount of the foam to be increased and liquid precipitation to be slowed down, on the other hand, the multi-hydrophilic-group functional groups enhance the hydrophilicity of the foaming agent, reduce lipophilicity and increase the oil-water interfacial tension, and therefore the foam discharging agent composition has good oil resistance. In addition, the thermal decomposition temperature of the alkylamine polyether benzene sulfonate and the long-chain polyether nitrogen-containing compound is 200 ℃, and the alkylamine polyether benzene sulfonate and the long-chain polyether nitrogen-containing compound are not hydrolyzed in an aqueous solution, so that the alkylamine polyether benzene sulfonate and the long-chain polyether nitrogen-containing compound can be applied to the high-temperature deep well drainage gas production process at 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, in 100,000mg/L salinity brine, the foaming height is more than 140mm, the condensate oil content is 0-30%, the liquid carrying amount is more than 140mL, the high-temperature aging is carried out at 180 ℃ for 24h, the foam foaming height and the drainage performance change rate are less than 5%, and the foam water discharging agent has good temperature resistance, foaming performance, liquid carrying capacity and oil resistance, and obtains good technical effects.
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.
The invention is further illustrated by the following examples.
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 ]
Under normal temperature and pressure, weighing alkylamine polyether benzene sulfonate, long-chain polyether nitrogen-containing compound and nano-silicon dioxide according to the mass ratio of 1:2:1, dissolving in 100,000mg/L water solution of mineralization degree, and preparing into 1.0 wt% solution, thus obtaining the foam water discharging agent composition HF-1. The component structure is shown in table 1.
[ example 2 ]
Under normal temperature and pressure, weighing alkylamine polyether benzene sulfonate, long-chain polyether nitrogen-containing compound and nano-silicon dioxide according to the mass ratio of 1:10:5, dissolving in 100,000mg/L water solution of mineralization degree, and preparing into 1.0 wt% solution, thus obtaining the foam water discharging agent composition HF-2. The component structure is shown in table 1.
[ example 3 ]
Under normal temperature and pressure, weighing alkylamine polyether benzene sulfonate, long-chain polyether nitrogen-containing compound and nano-silicon dioxide according to the mass ratio of 1:0.2:0.5, dissolving in 100,000mg/L water solution of mineralization degree, and preparing into 1.0 wt% solution, thus obtaining the foam water discharging agent composition HF-3. The component structure is shown in table 1.
[ example 4 ]
Under normal temperature and pressure, weighing alkylamine polyether benzene sulfonate, long-chain polyether nitrogen-containing compound and nano-silicon dioxide according to the mass ratio of 1:1:0.1, dissolving in 100,000mg/L water solution of mineralization degree, and preparing into 1.0 wt% solution, thus obtaining the foam water discharging agent composition HF-4. The component structure is shown in table 1.
[ example 5 ]
Under normal temperature and pressure, weighing alkylamine polyether benzene sulfonate, long-chain polyether nitrogen-containing compound and nano-silicon dioxide according to the mass ratio of 1:0.5:0.5, respectively dissolving in 100,000mg/L water solution of mineralization degree, and preparing into 1.0 wt% solution, thus obtaining the foam water discharging agent composition HF-5. The component structure is shown in table 1.
[ example 6 ]
Under normal temperature and pressure, weighing alkylamine polyether benzene sulfonate, long-chain polyether nitrogen-containing compound and nano-silicon dioxide according to the mass ratio of 1:2:1, dissolving in 100,000mg/L water solution of mineralization degree, and preparing into 1.0 wt% solution, thus obtaining the foam water discharging agent composition HF-6. The component structure is shown in table 1.
[ example 7 ]
Under normal temperature and pressure, weighing alkylamine polyether benzene sulfonate, long-chain polyether nitrogen-containing compound and nano-silicon dioxide according to the mass ratio of 1:3:0.5, dissolving in 100,000mg/L water solution of mineralization degree, and preparing into 1.0 wt% solution, thus obtaining the foam water discharging agent composition HF-7. The component structure is shown in table 1.
[ example 8 ]
Under normal temperature and pressure, weighing alkylamine polyether benzene sulfonate, long-chain polyether nitrogen-containing compound and nano-silicon dioxide according to the mass ratio of 1:50:10, dissolving in 100,000mg/L water solution of mineralization degree, and preparing into 1.0 wt% solution, thus obtaining the foam water discharging agent composition HF-8. The component structure is shown in table 1.
[ example 9 ]
Under normal temperature and pressure, weighing alkylamine polyether benzene sulfonate, long-chain polyether nitrogen-containing compound and nano-silicon dioxide according to the mass ratio of 1:2:1, dissolving in 100,000mg/L water solution of mineralization degree, and preparing into 1.0 wt% solution, thus obtaining the foam water discharging agent composition HF-9. The component structure is shown in table 1.
[ example 10 ]
Under normal temperature and pressure, weighing alkylamine polyether benzene sulfonate, long-chain polyether nitrogen-containing compound and nano-silicon dioxide according to the mass ratio of 1:2:1, dissolving in 100,000/L water solution of mineralization degree, and preparing into 1.0 wt% solution, thus obtaining the foam water discharging agent composition HF-10. The component structure is shown in table 1.
[ example 11 ]
Under normal temperature and pressure, weighing alkylamine polyether benzene sulfonate, long-chain polyether nitrogen-containing compound and nano-silicon dioxide according to the mass ratio of 1:2:1, dissolving in 100,000mg/L water solution of mineralization degree, and preparing into 1.0 wt% solution, thus obtaining the foam water discharging agent composition HF-11. The component structure is shown in table 1.
[ example 12 ]
Under normal temperature and pressure, weighing alkylamine polyether benzene sulfonate, long-chain polyether nitrogen-containing compound and nano calcium carbonate according to the mass ratio of 1:2:1, dissolving in 100,000mg/L water solution of mineralization degree, and preparing into 1.0 wt% solution, thus obtaining the foam water discharging agent composition HF-12. The component structure is shown in table 1.
[ example 13 ]
Under normal temperature and pressure, weighing alkylamine polyether benzene sulfonate, long-chain polyether nitrogen-containing compound and nano hectorite, dissolving in 100,000mg/L water solution with the mass ratio of 1:2:1, and preparing into 1.0 wt% solution to obtain the foam water draining agent composition HF-13. The component structure is shown in table 1.
[ example 14 ]
Under normal temperature and pressure, weighing alkylamine polyether benzene sulfonate and long-chain polyether nitrogen-containing compound according to the mass ratio of 1:2, dissolving in 100,000mg/L water solution of mineralization degree, and preparing into 1.0 wt% solution, thus obtaining the foam water discharging agent composition HF-14. The component structure is shown in table 1.
[ example 15 ]
The initial foaming height of the foam drainage agent and the foaming height after 5 minutes were measured according to SY/T6465-.
5000mL/min of nitrogen gas was continuously introduced into the foam drainage agent aqueous solution having condensate volume contents of 0, 15% and 30%, respectively, 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.
An experiment is carried out by adopting a pressure-resistant acid-resistant aging device, after aging at the high temperature of 180 ℃ for 24 hours, the initial foaming height of the foam drainage agent, the foaming height after 5 minutes and the foam drainage performance when the condensate content is respectively 0,15 percent and 30 percent are re-determined according to the method, and the results are shown in Table 2.
[ COMPARATIVE EXAMPLE 1 ]
Using the alkylamine polyether benzenesulfonate and nanosilica in [ examples 1 to 5 ] without adding a long-chain polyether nitrogen-containing compound, a foam drainage agent composition was prepared, and referring to the method in [ example 15 ], the initial height of foam and the 5-minute residual height of foam of the foam drainage agent were measured, and the liquid-carrying amount of the foam drainage agent was measured at condensate contents of 0, 15%, and 30%, respectively, and the results are shown in table 3.
[ COMPARATIVE EXAMPLE 2 ]
Using the long-chain polyether nitrogen-containing compound and nano-silica in [ examples 1 to 6 ], a foam drainage agent composition was prepared without adding alkylamine polyether benzenesulfonate, and the initial height of foam and the 5-minute residual height of foam of the foam drainage agent were measured with condensate contents of 0, 15%, and 30%, respectively, according to the method in [ example 15 ], and the liquid-carrying amount of the foam drainage agent was measured, and the results are shown in table 4.
[ COMPARATIVE EXAMPLE 3 ]
A foam drainage agent composition was prepared using the alkylamine polyether benzenesulfonate and tetradecyldimethyl betaine in [ example 1 ], and the initial height of foam and the 5-minute remaining height of foam of the foam drainage agent were measured with reference to the method in [ example 15 ], and the liquid carrying amount of the foam drainage agent was measured at condensate contents of 0, 15%, and 30%, respectively, and the results are shown in table 5.
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 composition of comparative example 1
Table 4 foam properties of foam drainage agent composition in comparative example 2
TABLE 5 foam Properties of the foam remover composition of comparative example 3
Claims (8)
1. A method for discharging liquid and producing gas by adopting an oil-proof foam discharging agent composition comprises the following steps:
(1) injecting the foam scrubbing agent composition or foam scrubbing agent composition solution into an aqueous gas well;
(2) fully contacting the foam discharging agent composition or the foam discharging agent composition solution with gas and water or a gas and oil-water mixture in an aqueous gas well to form foam fluid, and then lifting the foam fluid to the ground;
the foam scrubbing agent composition comprises the following components in parts by weight:
(1)1 part of alkylamine polyether benzene sulfonate;
(2) 0.1-50 parts of a long-chain polyether nitrogen-containing compound;
(3) 0-10 parts of nanoparticles;
wherein, the alkylamine polyether benzene sulfonate has a molecular general formula shown in a formula (I):
in the formula (I), 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 an alkali metal ion or an ammonium ion;
the long-chain polyether nitrogen-containing compound has a molecular general formula shown in a formula (II):
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; r4Is selected from C1～C5Alkyl or C1～C5Substituted alkyl of (a); r5Is selected from C1～C5Alkyl or C1～C5Substituted alkyl of (a); r6Is selected from C1～C5Alkylene or C1～C5Substituted alkylene of (a); r7Is selected from C1～C5An alkylene group of (a); y is selected from anions which render the molecule of formula (II) electrically neutral.
2. The method for liquid drainage and gas production by using the oil foam-resistant composition according to claim 1, wherein m + p is any number from 1 to 5, and n + q is any number from 5 to 15.
3. The method of claim 1 for liquid drainage and gas production using an oil foam drainage resistant composition, wherein R is1Is C10～C20Alkyl or C10～C20Of an alkylbenzene of, R7Is C2H4Or C3H6。
4. The method of liquid and gas production using an oil foam repellent composition according to claim 1, wherein z is greater than 0.
5. The method of draining gas using oil foam resistant composition as claimed in claim 1, wherein the nanoparticles are one of nano silica, nano calcium carbonate and nano hectorite.
6. The method of claim 1 wherein Y is selected from-COO-、-SO3 -、-HPO4 -One kind of (1).
7. The method for draining and producing gas by using the oil-resistant foam discharging agent composition according to any one of claims 1 to 6, wherein the preparation method of the foam discharging agent composition comprises the following steps:
and uniformly mixing the alkylamine polyether benzene sulfonate, the long-chain polyether nitrogen-containing compound and the nano particles with water according to the required mass parts to obtain the foam scrubbing agent composition.
8. The method for draining and producing gas by using the oil-proof foam drainage agent composition according to any one of claims 1 to 6, wherein the content of condensate oil in the water-containing gas well is 0 to 30%.
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| CN106590574A (en) * | 2015-10-20 | 2017-04-26 | 中国石油化工股份有限公司 | Hypersalinity resistant foam scrubbing agent composition used for drainage gas recovery and preparation method and application thereof |
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