CN109681176B - Method for liquid drainage and gas production by adopting oil-resistant foam drainage agent composition - Google Patents
Method for liquid drainage and gas production by adopting oil-resistant foam drainage agent composition Download PDFInfo
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- CN109681176B CN109681176B CN201710969873.7A CN201710969873A CN109681176B CN 109681176 B CN109681176 B CN 109681176B CN 201710969873 A CN201710969873 A CN 201710969873A CN 109681176 B CN109681176 B CN 109681176B
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- 239000006260 foam Substances 0.000 title claims abstract description 111
- 239000000203 mixture Substances 0.000 title claims abstract description 55
- 239000013051 drainage agent Substances 0.000 title claims abstract description 26
- 239000007788 liquid Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 61
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 55
- 229920000570 polyether Polymers 0.000 claims abstract description 55
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 44
- 239000007789 gas Substances 0.000 claims abstract description 40
- 238000007599 discharging Methods 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 29
- 229940077388 benzenesulfonate Drugs 0.000 claims abstract description 29
- -1 nitrogen-containing compound Chemical class 0.000 claims abstract description 29
- 150000003973 alkyl amines Chemical class 0.000 claims abstract description 28
- 238000005201 scrubbing Methods 0.000 claims abstract description 11
- 239000002105 nanoparticle Substances 0.000 claims abstract description 8
- 239000012530 fluid Substances 0.000 claims abstract description 7
- 235000019476 oil-water mixture Nutrition 0.000 claims abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 17
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- 125000003118 aryl group Chemical group 0.000 claims description 3
- 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
- 229910001413 alkali metal ion Inorganic materials 0.000 claims description 2
- 150000004996 alkyl benzenes Chemical class 0.000 claims description 2
- 125000002947 alkylene group Chemical group 0.000 claims description 2
- 125000000547 substituted alkyl group Chemical group 0.000 claims description 2
- 235000019198 oils Nutrition 0.000 abstract description 23
- 238000011161 development Methods 0.000 abstract description 3
- 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 23
- 230000033558 biomineral tissue development Effects 0.000 description 14
- 238000005303 weighing Methods 0.000 description 14
- 239000005543 nano-size silicon particle Substances 0.000 description 11
- 239000004094 surface-active agent Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical group FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 238000005187 foaming Methods 0.000 description 3
- 230000002209 hydrophobic effect Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 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
- 239000004088 foaming agent Substances 0.000 description 2
- 239000008398 formation water Substances 0.000 description 2
- KWIUHFFTVRNATP-UHFFFAOYSA-N glycine betaine Chemical compound C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000002360 preparation method Methods 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
- 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
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 125000002252 acyl group Chemical group 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 229960003237 betaine Drugs 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 125000002091 cationic group Chemical group 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
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 125000001033 ether group Chemical group 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 125000000524 functional group Chemical group 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
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000015784 hyperosmotic salinity response Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011780 sodium chloride Substances 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
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003756 stirring Methods 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
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
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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
-
- 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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/10—Nanoparticle-containing well treatment fluids
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- 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)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Abstract
The invention relates to a method for discharging liquid and producing gas by adopting an oil-resistant foam discharging 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 condensate oil and gas well development. The invention 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 with a molecular general formula shown in a formula (I); 0.1-50 parts of a long-chain polyether nitrogen-containing compound with a molecular general formula shown in a formula (II); 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 adopting a foam discharging agent composition for 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 crude oil, after contacting the foam, spreads or emulsifies in the gas-liquid and liquid films, and enters the foam structure under the action of external forces and interfacial tension, resulting in a decrease in stability of the foam 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. CN104531122A discloses an oil-resistant and mineralization-resistant solid foam scrubbing agent, which comprises the following components in percentage by weight: AES 20-40%, OP-10 content 5-20%, polyacrylamide 0.1-0.5%, thiourea 0-20%, paraffin wax 40-60%, it has better liquid carrying ability in various water types, but its oil resistance content is only 10%.
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, 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 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;
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 nano particles.
In the above technical solution, the general molecular formula of the alkylamine polyether benzenesulfonate is preferably:
wherein R' is 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; r2Is selected from C1～C4An alkylene group of (a); r3、R4Independent of each otherIs selected from C1～C5Any one of the alkyl group and the substituted alkyl group of (1).
In the above technical scheme, R1Is C10～C26The aliphatic group or aromatic group of (2) may contain a group such as an acyl group, a carbonyl group, an ether group, a hydroxyl group, etc., and may contain a saturated carbon chain or an unsaturated carbon chain, and R is preferably R1Is the preferred embodiment of C10～C20Alkyl, alkylbenzene; r2Preferably C2H4Or C3H6Z is preferably greater than 0.
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 application is 0-40%.
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.
According to the foam discharging agent composition, the alkylamine polyether benzene sulfonate and the long-chain polyether nitrogen-containing compound contain multi-hydrophilic-group functional groups, particularly the alkylamine polyether benzene sulfonate contains two sulfonate groups, and the multi-hydrophilic-group enhances the amount of bound water and bound water carried by the foaming agent, enhances the liquid carrying amount of the foam, slows down the liquid separation, and enhances the hydrophilicity of the foaming agent, reduces the lipophilicity and increases the oil-water interfacial tension, so that the foam discharging agent composition has good oil resistance. In addition, the alkylamine polyether benzene sulfonate and the long-chain polyether nitrogen-containing compound contain nonionic fragments such as EO and PO, and the salt resistance of the foam scrubbing agent can be remarkably improved. Meanwhile, the long-chain polyether nitrogen-containing compound is amine oxide, is slightly influenced by the pH value, becomes a nonionic surfactant under neutral or alkaline conditions, shows cationic type under acidic conditions, is a multifunctional surfactant, has strong foam increasing and stabilizing performance, and has good synergistic effect with an anionic surfactant.
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 condensate oil content is 0-40%, the liquid carrying amount is more than 140mL in 100,000mg/L salinity saline water, and the foam water discharging agent has good salt tolerance, foaming performance, liquid carrying capacity and oil resistance, 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 ]
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 height of foam and the 5 minute residual height of foam of the foam drainage agent were measured according to SY/T6465-.
5000mL/min of nitrogen gas was continuously introduced into the foam drainage agent aqueous solutions having condensate volume contents of 0, 20% and 40%, respectively, and the foam carrying amount in 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 ]
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, 20% and 40%, 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 ] without adding alkylamine polyether benzenesulfonate, a foam drainage agent composition was prepared, and the initial height of foam and the 5-minute residual height of foam of the foam drainage agent were measured in accordance with the method in [ example 15 ], and the liquid-carrying amount of the foam drainage agent was measured at condensate contents of 0, 20% and 40%, respectively, 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, 20% and 40%, 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 (6)
1. A method for discharging liquid and producing gas by adopting a 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 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;
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;
the alkylamine polyether benzene sulfonate has a molecular general formula shown in a formula (I):
in the formula (I), R' is C8～C20Any one of the alkyl groups of (a); m, n, p and q are any number of 0-20, m + p is any number of 1-5, n + q is any number of 5-15, m + n is not less than 1, and X is at least one of alkali metal ions or ammonium ions;
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, z is 0-60, and z is greater than 0; r2Is C1～C4An alkylene group of (a); r3、R4Is C1～C5Alkyl group of (A) or (B),Any one of substituted alkyl groups.
2. The method of claim 1, wherein R is selected from the group consisting of1Is C10～C20Alkyl of (C)10～C20An alkylbenzene of (1).
3. The method of claim 1, wherein R is selected from the group consisting of2Is C2H4Or C3H6。
4. The method of claim 1, wherein the nanoparticles are one of nano-silica, calcium carbonate, and hectorite.
5. The method of liquid discharge gas production using a foam drainage composition according to claim 1, characterized in that the nanoparticles are nanosilica.
6. A method of drainage and gas production using a foam drainage composition according to any of claims 1 to 5, characterized in that the foam drainage composition is prepared by a method comprising the steps of:
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 drainage agent composition for liquid drainage and gas production.
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