CN111088006A - Method for exhausting and collecting liquid by adopting salt-resistant oil-resistant foam discharging agent composition - Google Patents
Method for exhausting and collecting liquid by adopting salt-resistant oil-resistant foam discharging agent composition Download PDFInfo
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- 239000006260 foam Substances 0.000 title claims abstract description 182
- 239000000203 mixture Substances 0.000 title claims abstract description 94
- 239000007788 liquid Substances 0.000 title claims abstract description 38
- 150000003839 salts Chemical class 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000007599 discharging Methods 0.000 title claims description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000013051 drainage agent Substances 0.000 claims abstract description 52
- -1 alkyl amide Chemical class 0.000 claims abstract description 30
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 27
- 239000003945 anionic surfactant Substances 0.000 claims abstract description 27
- 229920000570 polyether Polymers 0.000 claims abstract description 27
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims abstract description 26
- 239000004711 α-olefin Substances 0.000 claims abstract description 25
- 239000002105 nanoparticle Substances 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 claims abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 50
- 235000019198 oils Nutrition 0.000 claims description 31
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 30
- 230000033558 biomineral tissue development Effects 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 238000005201 scrubbing Methods 0.000 claims description 9
- 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 5
- 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
- 229910052783 alkali metal Inorganic materials 0.000 claims description 2
- 229910001413 alkali metal ion Inorganic materials 0.000 claims description 2
- 125000003342 alkenyl group Chemical group 0.000 claims description 2
- 125000000129 anionic group Chemical group 0.000 claims description 2
- 150000007942 carboxylates Chemical group 0.000 claims description 2
- 125000002091 cationic group Chemical group 0.000 claims description 2
- 150000001768 cations Chemical class 0.000 claims description 2
- 125000001183 hydrocarbyl group Chemical group 0.000 claims description 2
- 230000007935 neutral effect Effects 0.000 claims description 2
- 235000019476 oil-water mixture Nutrition 0.000 claims description 2
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 claims description 2
- 238000005507 spraying Methods 0.000 abstract description 2
- 238000009825 accumulation Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 34
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 30
- 239000007789 gas Substances 0.000 description 28
- 239000003921 oil Substances 0.000 description 22
- 229910052757 nitrogen Inorganic materials 0.000 description 14
- 238000005303 weighing Methods 0.000 description 14
- 239000005543 nano-size silicon particle Substances 0.000 description 11
- 235000012239 silicon dioxide Nutrition 0.000 description 11
- 239000004094 surface-active agent Substances 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical group FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- 230000002209 hydrophobic effect Effects 0.000 description 3
- 229910001415 sodium ion Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 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
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 239000008398 formation water Substances 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
- 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
- NPYPAHLBTDXSSS-UHFFFAOYSA-N Potassium ion Chemical group [K+] NPYPAHLBTDXSSS-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000003513 alkali Substances 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
- 229940077388 benzenesulfonate Drugs 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 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
- 239000012188 paraffin wax Substances 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
- 229910001414 potassium ion Chemical group 0.000 description 1
- 238000000926 separation method 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
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
- Degasification And Air Bubble Elimination (AREA)
Abstract
The invention relates to a method for draining and producing gas by using a salt-resistant oil-resistant foam drainage agent composition, which mainly solves the problems that the oil resistance of foam formed by the existing foam drainage agent is insufficient, the foam drainage performance is poor, and liquid accumulation at the bottom of a well is caused, the yield of the gas well is reduced, and even the gas well stops spraying in the development of a condensate oil-gas well, and the invention adopts the technical scheme that 1) the foam drainage agent composition or the foam drainage agent composition solution is injected into a water-containing gas well, 2) the foam drainage agent composition or the foam drainage agent composition solution is fully contacted with gas and water or a mixture of the gas and the oil-water in the water-containing gas well to form a foam fluid, and then the foam fluid is lifted to the ground, wherein the foam drainage agent composition comprises the following components in parts by mass, namely 1 part of an alkyl amide polyether anionic surfactant with a molecular general formula shown in formula (I), 0.1-50 parts of α -olefin sulfonate, and 0-10 parts of nano particles, so that the problems are well solved, and can.
Description
Technical Field
The invention relates to a method for discharging liquid and producing gas by adopting a salt-resistant oil-resistant foam discharging agent composition, in particular to a method for discharging liquid and producing gas by adopting a salt-resistant oil-resistant 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 a salt-resistant oil-resistant 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 a hydrocarbyl amide polyether anionic surfactant;
(2) 0.1-50 parts of α -olefin sulfonate;
(3) 0-10 parts of nanoparticles;
wherein, the alkyl amide polyether anionic surfactant has a molecular general formula shown in a formula (I):
in the formula (I), R' is C8～C20Any one of the hydrocarbon groups of (1); m, n, p and q are any number independently selected from 0-20, and m + n is more than or equal to 1; y is a monovalent anionic radicalM is a cation or cationic group which makes the molecular formula electrically neutral.
In the technical scheme, m + p is preferably any number of 1-5, and n + q is preferably any number of 5-15.
In the above technical solution, the Y is preferably self-COO-、-SO3 -、-HPO4 -Further preferably a sulfonate group or a carboxylate group; m is preferably at least one of an alkali metal ion and an ammonium ion, and more preferably K+、Na+And ammonium ions.
In the above technical solution, R' is preferably C8～C20Alkyl of (C)8～C20At least one of alkenyl groups of (a).
In the above technical solution, the α -olefin sulfonate preferably has the following molecular formula:
R5-HC＝CH-CH2-SO3x, formula (II)
Wherein R is5Is C5～C30X is selected from alkali metal cations; further preferably: x is preferably sodium ion or potassium ion, and more preferably selected from sodium ion; r5Preferably selected from C8～C22More preferably selected from C14～C18Alkyl group 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.
In the technical scheme, the mineralization degree of the water-containing gas well is 0-250,000 mg/L, and the condensate oil content is 0-40%.
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 solution, the preparation method of the foam scrubbing agent composition preferably includes the following steps:
and uniformly mixing the alkyl amide polyether anionic surfactant, α -olefin sulfonate and nanoparticles with water according to the required mass parts to obtain the foam discharging agent composition for water drainage and gas production.
In the technical scheme, the foam fluid contains the alkylamide polyether anionic surfactant, α -olefin sulfonate and nanoparticles, and the mass percentage concentration of the foam discharging agent composition is 0.5-5%.
The hydrocarbyl amide polyether anionic surfactant and α -olefin sulfonate which are key active ingredients of the foam water discharging agent composition can be supplied in various forms, such as non-aqueous solid form, aqueous paste form or aqueous solution form, for convenience of transportation, storage, field use and the like, and the aqueous solution form comprises a form of preparing a concentrated solution by water and directly preparing the foam water discharging agent with the concentration required by field flooding, wherein the water has no special requirement and can be deionized water or water containing inorganic minerals, and the water containing the inorganic minerals can be tap water, oil and gas field formation water or oil and gas field injection water.
The foam water discharging agent composition has good compatibility, and can also contain other treating agents commonly used in the field.
The inventor surprisingly finds that the adopted alkyl amide polyether anionic surfactant and α -alkene sulfonate in the foam discharging agent composition form a compound synergistic effect after being mixed, the composition contains multiple hydrophilic groups, particularly the alkyl amide polyether anionic surfactant contains two acid radicals, and the multiple hydrophilic groups and α -alkene sulfonate synergistically enhance the quantity of bound water and bound water carried by the foam agent on one hand, the liquid carrying capacity of the foam agent is enhanced, the liquid separation is slowed down, and the liquid carrying capacity and the foam stabilizing performance of the foam are enhanced on the other hand, the hydrophilicity of the foam agent is enhanced synergistically by the multiple hydrophilic groups and the α -alkene sulfonate, the lipophilicity is reduced, the oil-water interfacial tension is increased, and the foam discharging agent has good oil resistance.
By adopting the technical scheme of the invention, foam performance and simulated drainage gas production tests are carried out on the foam water discharging agent according to SY/T6465-2000 foamer evaluation method for foam drainage gas production, and in 0-250,000 mg/L salinity brine, the foaming height is more than 140mm, the condensate oil content is 0-40%, the liquid carrying amount is more than 140mL, so that the foam water discharging agent has good salt resistance, foaming performance, liquid carrying capacity and oil resistance, and a good technical effect is obtained.
The invention is further illustrated by the following examples.
Drawings
FIG. 1 shows a liquid carrying amount measuring apparatus (the height of a jacketed vessel is 1 m).
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 ]
Weighing and dissolving the alkyl amide polyether anionic surfactant, α -olefin sulfonate and nano silicon dioxide in water solution with the mineralization degree of 100,000, 200,000 and 250,000mg/L respectively according to the mass ratio of 1:2:1 at normal temperature and normal pressure to prepare 1.0 wt% solution, namely the foam water discharging agent composition NY-1, wherein the component structure is shown in Table 1.
The initial foam height and the 5 minute residual foam height of the foam drainage agent composition NY-1 were measured with reference to SY/T6465-.
5000mL/min of nitrogen was continuously introduced into foam drainage agent composition NY-1 having condensate volume contents of 0, 20% and 40%, 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.
[ example 2 ]
Weighing and dissolving the alkyl amide polyether anionic surfactant, α -olefin sulfonate and nano silicon dioxide in water solution with the mineralization degree of 100,000, 200,000 and 250,000mg/L respectively according to the mass ratio of 1:10:5 at normal temperature and normal pressure to prepare 1.0 wt% solution, namely the foam water discharging agent composition NY-2, wherein the component structure is shown in Table 1.
The initial foam height and the 5 minute residual foam height of the foam drainage agent composition NY-2 were measured with reference to SY/T6465-.
5000mL/min of nitrogen was continuously introduced into foam drainage agent composition NY-2 having condensate volume contents of 0, 20% and 40%, 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.
[ example 3 ]
Weighing and dissolving the alkyl amide polyether anionic surfactant, α -olefin sulfonate and nano silicon dioxide in an aqueous solution with the mineralization degree of 100,000, 200,000 and 250,000mg/L respectively according to the mass ratio of 1:0.2:0.5 at normal temperature and normal pressure to prepare a 1.0 wt% solution, namely the foam water discharging agent composition NY-3, wherein the component structure is shown in Table 1.
The initial foam height and the 5 minute residual foam height of the foam drainage agent composition NY-3 were measured with reference to SY/T6465-.
5000mL/min of nitrogen was continuously introduced into the foam drainage agent composition NY-3 having condensate volume contents of 0, 20% and 40%, 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.
[ example 4 ]
At normal temperature and normal pressure, weighing and dissolving the alkyl amide polyether anionic surfactant, α -olefin sulfonate and nano silicon dioxide in water solution with the mineralization degree of 100,000, 200,000 and 250,000mg/L respectively according to the mass ratio of 1:1:0.1 to prepare 1.0 wt% solution, namely the foam water discharging agent composition NY-4, wherein the component structure is shown in the table 1.
The initial foam height and the 5 minute residual foam height of the foam drainage agent composition NY-4 were measured with reference to SY/T6465-.
5000mL/min of nitrogen was continuously introduced into the foam drainage agent composition NY-4 having condensate volume contents of 0, 20% and 40%, 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.
[ example 5 ]
Weighing and dissolving the alkyl amide polyether anionic surfactant, α -olefin sulfonate and nano silicon dioxide in an aqueous solution with the mineralization degree of 100,000, 200,000 and 250,000mg/L respectively according to the mass ratio of 1:0.5:0.5 at normal temperature and normal pressure to prepare a 1.0 wt% solution, thus obtaining the foam water discharging agent composition NY-5, wherein the component structure is shown in Table 1.
The initial foam height and the 5 minute residual foam height of the foam drainage agent composition NY-5 were measured with reference to SY/T6465-.
5000mL/min of nitrogen was continuously introduced into the foam drainage agent composition NY-5 having condensate volume contents of 0, 20% and 40%, 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.
[ example 6 ]
Weighing and dissolving the alkyl amide polyether anionic surfactant, α -olefin sulfonate and nano silicon dioxide in water solution with the mineralization degree of 100,000, 200,000 and 250,000mg/L respectively according to the mass ratio of 1:2:1 at normal temperature and normal pressure to prepare 1.0 wt% solution, namely the foam water discharging agent composition NY-6, wherein the component structure is shown in Table 1.
The initial foam height and the 5 minute residual foam height of the foam drainage agent composition NY-6 were measured with reference to SY/T6465-.
5000mL/min of nitrogen was continuously introduced into foam drainage agent composition NY-6 having condensate volume contents of 0, 20% and 40%, 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.
[ example 7 ]
At normal temperature and normal pressure, weighing and dissolving the alkyl amide polyether anionic surfactant, α -olefin sulfonate and nano silicon dioxide in water solution with the mineralization degree of 100,000, 200,000 and 250,000mg/L according to the mass ratio of 1:3:0.5 respectively to prepare 1.0 wt% of solution, namely the foam water discharging agent composition NY-7, wherein the component structure is shown in Table 1.
The initial foam height and the 5 minute residual foam height of the foam drainage agent composition NY-7 were measured with reference to SY/T6465-.
5000mL/min of nitrogen was continuously introduced into foam drainage agent composition NY-7 having condensate volume contents of 0, 20% and 40%, 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.
[ example 8 ]
At normal temperature and normal pressure, weighing and dissolving the alkyl amide polyether anionic surfactant, α -olefin sulfonate and nano silicon dioxide in water solution with the mineralization degree of 100,000, 200,000 and 250,000mg/L according to the mass ratio of 1:50:10 respectively to prepare 1.0 wt% solution, namely the foam water drainage agent composition NY-8, wherein the component structure is shown in Table 1.
The initial foam height and the 5 minute residual foam height of the foam drainage agent composition NY-8 were measured with reference to SY/T6465-.
5000mL/min of nitrogen was continuously introduced into foam drainage agent composition NY-8 having condensate volume contents of 0, 20% and 40%, 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.
[ example 9 ]
At normal temperature and normal pressure, weighing and dissolving the alkyl amide polyether anionic surfactant, α -olefin sulfonate and nano silicon dioxide in water solution with the mineralization degree of 100,000, 200,000 and 250,000mg/L according to the mass ratio of 1:2:1 respectively to prepare 1.0 wt% solution, namely the foam water discharging agent composition NY-9, wherein the component structure is shown in Table 1.
The initial foam height and the 5 minute residual foam height of the foam drainage agent composition NY-9 were measured with reference to SY/T6465-.
5000mL/min of nitrogen was continuously introduced into the foam drainage agent composition NY-9 having condensate volume contents of 0, 20% and 40%, 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.
[ example 10 ]
At normal temperature and normal pressure, weighing and dissolving the alkyl amide polyether anionic surfactant, α -olefin sulfonate and nano silicon dioxide in water solution with the mineralization degree of 100,000, 200,000 and 250,000mg/L according to the mass ratio of 1:2:1 respectively to prepare 1.0 wt% solution, namely the foam water discharging agent composition NY-10, wherein the component structure is shown in Table 1.
The initial foam height and the 5 minute residual foam height of the foam drainage agent composition NY-10 were measured with reference to SY/T6465-.
5000mL/min of nitrogen was continuously introduced into foam drainage agent composition NY-10 having condensate volume contents of 0, 20% and 40%, 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.
[ example 11 ]
Weighing and dissolving the alkyl amide polyether anionic surfactant, α -olefin sulfonate and nano silicon dioxide in water solution with the mineralization degree of 100,000, 200,000 and 250,000mg/L respectively according to the mass ratio of 1:2:1 at normal temperature and normal pressure to prepare 1.0 wt% solution, namely the foam water discharging agent composition NY-11, wherein the component structure is shown in Table 1.
The initial foam height and the 5 minute residual foam height of the foam drainage agent composition NY-11 were measured with reference to SY/T6465-.
5000mL/min of nitrogen was continuously introduced into foam drainage agent composition NY-11 having condensate volume contents of 0, 20% and 40%, 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.
[ example 12 ]
At normal temperature and normal pressure, weighing and dissolving the alkyl amide polyether anionic surfactant, α -olefin sulfonate and nano calcium carbonate in water solution with mineralization of 100,000, 200,000 and 250,000mg/L respectively according to the mass ratio of 1:2:1 to prepare 1.0 wt% solution, namely the foam water drainage agent composition NY-12, wherein the component structure is shown in Table 1.
The initial foam height and the 5 minute residual foam height of the foam drainage agent composition NY-12 were measured with reference to SY/T6465-.
5000mL/min of nitrogen was continuously introduced into the foam drainage agent composition NY-12 having condensate volume contents of 0, 20% and 40%, 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.
[ example 13 ]
At normal temperature and normal pressure, weighing and dissolving the alkyl amide polyether anionic surfactant, α -olefin sulfonate and nano hectorite in water solution with mineralization degrees of 100,000, 200,000 and 250,000mg/L according to the mass ratio of 1:2:1 respectively to prepare 1.0 wt% of solution, namely the foam water draining agent composition NY-13, wherein the component structure is shown in Table 1.
The initial foam height and the 5 minute residual foam height of the foam drainage agent composition NY-13 were measured with reference to SY/T6465-.
5000mL/min of nitrogen was continuously introduced into the foam drainage agent composition NY-13 having condensate volume contents of 0, 20% and 40%, 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.
[ example 14 ]
Weighing and dissolving the alkyl amide polyether anionic surfactant and α -olefin sulfonate in water solution with the mineralization degrees of 100,000, 200,000 and 250,000mg/L respectively according to the mass ratio of 1:2 at normal temperature and normal pressure to prepare 1.0 wt% of solution, thus obtaining the foam water discharging agent composition NY-14, wherein the component structure is shown in Table 1.
The initial foam height and the 5 minute residual foam height of the foam drainage agent composition NY-14 were measured with reference to SY/T6465-.
5000mL/min of nitrogen was continuously introduced into the foam drainage agent composition NY-14 having condensate volume contents of 0, 20% and 40%, 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.
[ COMPARATIVE EXAMPLE 1 ]
A foam drainage agent composition was prepared by using the hydrocarbyl amide polyether anionic surfactant and the nano-silica in [ examples 1-5 ] without adding α -olefin sulfonate, and the initial height of foam and the 5-minute remaining height of foam of the foam drainage agent composition were measured according to SY/T6465-2000 evaluation method for foam drainage and gas generation foamer, and the results are shown in Table 3.
5000mL/min of nitrogen gas was continuously introduced into the foam drainage agent compositions having condensate volume contents of 0, 20% and 40%, respectively, and the amount of foam carried over a period of 15 minutes was measured, and the results are shown in Table 3. The liquid carrying amount measuring apparatus used is shown in FIG. 1.
[ COMPARATIVE EXAMPLE 2 ]
A foam drainage agent composition was prepared by using α -olefin sulfonate and nano-silica in [ examples 5 to 8 ] without adding the alkylamide polyether anionic surfactant, and the initial height of foam and the 5-minute remaining height of foam of the foam drainage agent composition were measured with reference to SY/T6465-2000 evaluation method for foam drainage and gas generation foamer, and the results are shown in Table 4.
5000mL/min of nitrogen gas was continuously introduced into the foam drainage agent compositions having condensate volume contents of 0, 20% and 40%, respectively, and the amount of foam carried over a period of 15 minutes was measured, and the results are shown in Table 4. The liquid carrying amount measuring apparatus used is shown in FIG. 1.
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
Claims (10)
1. A method for discharging liquid and producing gas by adopting a salt-resistant oil-resistant 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 a hydrocarbyl amide polyether anionic surfactant;
2) 0.1-50 parts of α -olefin sulfonate;
3) 0-10 parts of nanoparticles;
wherein, the alkyl amide polyether anionic surfactant has a molecular general formula shown in a formula (I):
in the formula (I), R' is C8～C20Any one of the hydrocarbon groups of (1); m, n, p and q are independently selected from any number of 0-20, and m + n is more than or equal to 1; y is a monovalent anionic group; m is a cation or cationic group which renders the molecular formula electrically neutral.
2. The method for draining and producing gas by using the salt and oil resistant foam discharging agent composition according to claim 1, wherein m + p is any number of 1-5.
3. The method for draining and producing gas by using the salt and oil resistant foam discharging agent composition according to claim 1, wherein n + q is any number of 5-15.
4. The method of liquid and gas production using a salt and oil resistant vesicant composition according to claim 1, wherein Y is sulfonate or carboxylate; m is any one of alkali metal ions and ammonium ions.
5. The salt and oil resistant foam drainage agent composition according to claim 1, wherein R' is C8～C20Alkyl of (C)8～C20At least one of alkenyl groups of (a).
6. The method for liquid and gas production using the composition of salt and oil resistant foam discharging agent as claimed in claim 1, wherein said α -olefin sulfonate has the following molecular formula:
R5-HC＝CH-CH2-SO3x, formula (II);
in the formula (II), R5Is C5～C30X is an alkali metal cation.
7. The method for draining and producing gas by using the salt and oil resistant foam drainage agent composition according to claim 1, wherein the nano particles are at least one of nano silica, calcium carbonate and hectorite.
8. The method for liquid and gas production using the salt and oil resistant foam and drain composition according to claim 1, wherein the nanoparticles are nanosilica.
9. The method for draining and producing gas by using the salt-resistant and oil-resistant foam discharging agent composition according to any one of claims 1 to 8, characterized in that the foam discharging agent composition is prepared by the following steps:
and uniformly mixing the alkyl amide polyether anionic surfactant, α -olefin sulfonate and nanoparticles with water according to the required mass parts to obtain the foam scrubbing agent composition.
10. The method for liquid drainage and gas production by adopting the salt-resistant oil-resistant foam discharging agent composition according to any one of claims 1 to 8, characterized in that the mineralization degree in the water-containing gas well is 0 to 250,000mg/L, and the condensate oil content is 0 to 40%.
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| CN116042202A (en) * | 2022-11-17 | 2023-05-02 | 成都科能石油技术有限公司 | High-mineralization-resistant and high-temperature-resistant nanoparticle foam discharging agent and preparation method thereof |
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