CN115029119A - High-temperature salt-resistant foaming agent and preparation method and application thereof - Google Patents
High-temperature salt-resistant foaming agent and preparation method and application thereof Download PDFInfo
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- CN115029119A CN115029119A CN202110237409.5A CN202110237409A CN115029119A CN 115029119 A CN115029119 A CN 115029119A CN 202110237409 A CN202110237409 A CN 202110237409A CN 115029119 A CN115029119 A CN 115029119A
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- 239000004088 foaming agent Substances 0.000 title claims abstract description 57
- 150000003839 salts Chemical class 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 229930182478 glucoside Natural products 0.000 claims abstract description 37
- 150000008131 glucosides Chemical class 0.000 claims abstract description 37
- 229940051841 polyoxyethylene ether Drugs 0.000 claims abstract description 37
- 229920000056 polyoxyethylene ether Polymers 0.000 claims abstract description 37
- 238000010795 Steam Flooding Methods 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000002738 chelating agent Substances 0.000 claims abstract description 26
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000005187 foaming Methods 0.000 claims abstract description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 3
- 238000003756 stirring Methods 0.000 claims description 34
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 33
- 150000002191 fatty alcohols Chemical class 0.000 claims description 26
- JPZROSNLRWHSQQ-UHFFFAOYSA-N furan-2,5-dione;prop-2-enoic acid Chemical group OC(=O)C=C.O=C1OC(=O)C=C1 JPZROSNLRWHSQQ-UHFFFAOYSA-N 0.000 claims description 19
- 239000006260 foam Substances 0.000 claims description 18
- 150000001768 cations Chemical class 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 10
- 230000033558 biomineral tissue development Effects 0.000 claims description 8
- 125000000217 alkyl group Chemical group 0.000 claims description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 4
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims description 4
- 239000011575 calcium Substances 0.000 claims description 4
- 229910001424 calcium ion Inorganic materials 0.000 claims description 4
- 239000000295 fuel oil Substances 0.000 claims description 4
- 229910001425 magnesium ion Inorganic materials 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 230000002209 hydrophobic effect Effects 0.000 claims description 2
- 125000004417 unsaturated alkyl group Chemical group 0.000 claims description 2
- 239000004604 Blowing Agent Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 38
- 230000000052 comparative effect Effects 0.000 description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 14
- 238000006243 chemical reaction Methods 0.000 description 13
- 238000002156 mixing Methods 0.000 description 12
- 238000012360 testing method Methods 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- 238000011084 recovery Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 239000008398 formation water Substances 0.000 description 5
- 238000009472 formulation Methods 0.000 description 5
- 230000005465 channeling Effects 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010793 Steam injection (oil industry) Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000009671 shengli Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- VCUFZILGIRCDQQ-KRWDZBQOSA-N N-[[(5S)-2-oxo-3-(2-oxo-3H-1,3-benzoxazol-6-yl)-1,3-oxazolidin-5-yl]methyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C1O[C@H](CN1C1=CC2=C(NC(O2)=O)C=C1)CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F VCUFZILGIRCDQQ-KRWDZBQOSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Classifications
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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)
- Saccharide Compounds (AREA)
Abstract
The invention belongs to the field of oilfield chemistry, and particularly relates to a high-temperature salt-resistant foaming agent, and a preparation method and application thereof. The foaming agent comprises the following components: 30-40% of fatty alcohol-polyoxyethylene ether glucoside and C 20~24 20-30% of AOS, 2-3% of chelating agent, 10-15% of low carbon alcohol and water. The foaming agent disclosed by the invention has good high-temperature resistance and salt resistance, is strong in foaming capacity and stable in performance under the conditions of high temperature and high salinity, is applied to thick oil steam flooding, is remarkable in effect, and can meet the industrial requirements.
Description
Technical Field
The invention belongs to the field of oilfield chemistry, and particularly relates to a high-temperature salt-resistant foaming agent, and a preparation method and application thereof.
Background
At present, the main mode of heavy oil development is steam injection thermal recovery, and steam flooding oil recovery is a thermal recovery method adopted for further improving the recovery ratio after heavy oil reservoirs are subjected to steam huff and puff oil recovery. Steam flooding oil extraction is to continuously inject high-dryness steam into an oil layer through an injection well, and the steam continuously heats the oil layer, so that the viscosity of crude oil in the stratum is greatly reduced. The injected steam becomes a hot fluid in the formation, driving the crude oil around the production wells and being produced to the surface.
However, the development effect of steam flooding is seriously influenced by the ineffective channeling of steam in a low residual oil saturation zone, and the biggest problem encountered by steam flooding is how to inhibit the steam channeling and the overtopping of steam and enlarge the swept volume of the steam. At present, mine field practices at home and abroad prove that the sweep efficiency and the displacement efficiency of injected steam can be improved by injecting nitrogen and a high-temperature foam system in steam. By adding the high-temperature foaming agent and the nitrogen, foam is generated in a stratum pore channel, the seepage capability of a gas phase is rapidly reduced by a high-strength foam membrane, a high-permeability layer or a large pore channel is blocked, the displacement volume is increased, the swept area is increased, and the oil reservoir development effect is improved.
Patents CN107903886A, CN110078865A, CN108084981A and CN102676145A all provide a high-temperature foaming agent and a preparation method thereof, have the characteristics of good thermal stability and strong foaming and plugging properties, and play an active role in steam injection thermal recovery and steam channeling prevention of heavy oil reservoirs. However, none of the above patents address the problem of compatibility between the high temperature foaming agent and the formation water, and the raw materials used are mainly anionic surfactants, which can cause precipitation when encountering formation water with high mineralization degree, thus seriously affecting the foaming performance and the failure. Therefore, it is highly desirable to invent a high temperature resistant and hypersalinity resistant frother for steam flooding.
Disclosure of Invention
The foaming agent has good high-temperature resistance and salt resistance, strong foaming capacity and stable performance under the condition of high temperature and high salinity, is applied to thick oil steam flooding, has obvious effect and can meet the industrial requirements.
In order to realize the purpose, the invention adopts the following technical scheme:
the invention provides a high-temperature salt-resistant foaming agent, which comprises the following components: 30-40% of fatty alcohol-polyoxyethylene ether glucoside and C 20～24 20-30% of AOS, 2-3% of chelating agent, 10-15% of low carbon alcohol and water.
Further, the molecular formula of the fatty alcohol polyoxyethylene ether glucoside is as follows:
(C 6 H 11 O 5 ) m (CH 2 CH 2 O) n OR 1
wherein R is 1 Is an alkyl group having 12 to 14 carbons, m is 2 or 3, and n is 3 or 4. It is understood that R 1 There may be alkyl groups having 12, 13, 14 carbons.
Further, said C 20～24 The molecular formula of AOS is as follows:
R 2 -CH＝CH-(CH 2 )-SO 3 M
wherein R is 2 Is alkyl with 17-21 carbons, M is selected from Na + 、K + 、NH 4 + Any one of (1).
Further, said C 20～24 AOS is an unsaturated alkyl sulfonate with a hydrophobic chain of 20-24 carbon atoms.
Further, the chelating agent is MA/AA.
Further, the lower alcohol is one or more of methanol, ethanol and isopropanol.
The invention also provides a preparation method of the high-temperature salt-resistant foaming agent, which comprises the steps of dissolving a chelating agent in water with the temperature of 40-50 ℃, uniformly stirring, adding fatty alcohol-polyoxyethylene ether glucoside and lower alcohol, fully and uniformly stirring, adding C20-24 AOS, and uniformly stirring to obtain the high-temperature salt-resistant foaming agent.
The invention also provides application of the high-temperature salt-resistant foaming agent in thickened oil steam flooding.
Furthermore, when the foaming agent is compatible with water phase with the mineralization degree of 0-200000mg/L and the calcium and magnesium ion concentration of less than 5000mg/L, the foaming volume is more than or equal to 200mL, the half-life period is more than or equal to 20s, after the foaming agent is subjected to temperature resistance of 300 ℃, the foaming volume is more than or equal to 200mL, the half-life period is more than or equal to 18s, and the drag factor is more than or equal to 20.
Compared with the prior art, the invention has the following advantages:
the high-temperature salt-resistant foaming agent mainly comprises fatty alcohol-polyoxyethylene ether glucoside and C 20～ 24 AOS and a high-temperature-resistant chelating agent. Fatty alcohol polyoxyethylene ether glucoside and C 20～24 The AOS has good foam performance and strong temperature resistance and salt resistance, and the stability of the foam is enhanced by compounding the AOS and the AOS. For highly mineralized formation water, the chelating agent can chelate multivalent ions in the water, and contribute to foam generation and stabilization.
The high-temperature salt-resistant foaming agent disclosed by the invention is wide in adaptation condition, high in mineralization resistance, and capable of resisting formation water with the mineralization degree of 200000mg/L and the concentration of calcium and magnesium ions of 5000 mg/L. The foaming agent disclosed by the invention is simple in production process, easily available in raw materials, harmless to the environment and personnel from production to use, and meets the requirements of environmental protection.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of the stated features, steps, operations, and/or combinations thereof, unless the context clearly indicates otherwise.
In order to make the technical solutions of the present invention more clearly understood by those skilled in the art, the technical solutions of the present invention will be described in detail below with reference to specific embodiments.
Example 1
Adding 280kg of water into a reaction kettle, adding 20kg of high-temperature-resistant chelating agent MA/AA at the temperature of 50 ℃, and uniformly stirring; adding 400kg fatty alcohol-polyoxyethylene ether glucoside and 100kg methanol, stirring, and adding 200kgC 20～24 And AOS, and stirring and uniformly mixing to obtain the high-temperature salt-resistant foaming agent for the thick oil steam flooding.
The molecular formula of the fatty alcohol polyoxyethylene ether glucoside is as follows: (C) 6 H 11 O 5 ) 2 (CH 2 CH 2 O) 3 OC 12 H 25 。
C 20～24 The molecular formula of AOS is as follows: c 17 H 35 -CH＝CH-(CH 2 )-SO 3 M (M is selected from Na) + 、K + 、NH 4 + Any one of the cations in (1)
Example 2
Adding 270kg of water into a reaction kettle, adding 30kg of high-temperature-resistant chelating agent MA/AA at the temperature of 48 ℃, and uniformly stirring; then 380kg of fatty alcohol-polyoxyethylene ether glucoside and 100kg of ethanol are added, after the mixture is fully stirred uniformly, 220kgC is added finally 20～24 And AOS, and stirring and uniformly mixing to obtain the high-temperature salt-resistant foaming agent for the thick oil steam flooding.
The molecular formula of the fatty alcohol polyoxyethylene ether glucoside is as follows: (C) 6 H 11 O 5 ) 2 (CH 2 CH 2 O) 4 OC 13 H 27 。
C 20～24 The molecular formula of AOS is as follows: c 18 H 37 -CH＝CH-(CH 2 )-SO 3 M (M is selected from Na) + 、K + 、NH 4 + Any one of the cations in (1)
Example 3
Adding 280kg of water into a reaction kettle, adding 20kg of high-temperature-resistant chelating agent MA/AA at the temperature of 46 ℃, and uniformly stirring; then 360kg of fatty alcohol polyoxyethylene ether glucoside and 100kg of isopropanol are added, after the mixture is fully stirred uniformly, 240kgC is added finally 20～24 And AOS, and stirring and uniformly mixing to obtain the high-temperature salt-resistant foaming agent for the thick oil steam flooding.
The molecular formula of the fatty alcohol polyoxyethylene ether glucoside is as follows: (C) 6 H 11 O 5 ) 2 (CH 2 CH 2 O) 3 OC 14 H 29 。
C 20～24 The molecular formula of AOS is as follows: c 19 H 39 -CH＝CH-(CH 2 )-SO 3 M (M is selected from Na) + 、K + 、NH 4 + Any one of the cations in (1)
Example 4
Adding 270kg of water into a reaction kettle, adding 30kg of high-temperature-resistant chelating agent MA/AA at the temperature of 44 ℃, and uniformly stirring; 340kg of fatty alcohol polyoxyethylene ether glucoside (R) are then added 1 12, m-3, n-4) and 50kg of methanol and 50kg of ethanol, and finally adding 260kgC after fully stirring uniformly 20～24 AOS(R 2 20), stirring and uniformly mixing to obtain the high-temperature salt-resistant foaming agent for the thick oil steam flooding.
The molecular formula of the fatty alcohol polyoxyethylene ether glucoside is as follows: (C) 6 H 11 O 5 ) 3 (CH 2 CH 2 O) 4 OC 12 H 25 。
C 20～24 The molecular formula of AOS is as follows: c 20 H 41 -CH＝CH-(CH 2 )-SO 3 M (M is selected from Na) + 、K + 、NH 4 + Any one of the cations in (1)
Example 5
Adding 280kg of water into a reaction kettle, heating at 42 ℃,adding 20kg of high-temperature-resistant chelating agent MA/AA, and uniformly stirring; then adding 320kg of fatty alcohol polyoxyethylene ether glucoside, 50kg of methanol and 50kg of isopropanol, fully stirring uniformly, and finally adding 280kgC 20～24 AOS(R 2 And (21), uniformly stirring and mixing to obtain the high-temperature salt-resistant foaming agent for the thick oil steam flooding.
The molecular formula of the fatty alcohol polyoxyethylene ether glucoside is as follows: (C) 6 H 11 O 5 ) 3 (CH 2 CH 2 O) 3 OC 13 H 27 。
C 20～24 The molecular formula of AOS is as follows: c 21 H 43 -CH＝CH-(CH 2 )-SO 3 M (M is selected from Na) + 、K + 、NH 4 + Any one of the cations in (1)
Example 6
Adding 270kg of water into a reaction kettle, adding 30kg of high-temperature-resistant chelating agent MA/AA at the temperature of 40 ℃, and uniformly stirring; then 300kg of fatty alcohol polyoxyethylene ether glucoside (R) are added 1 14, m-3, n-4) and 50kg of ethanol and 50kg of isopropanol, and finally 300kgC is added after fully stirring the mixture evenly 20～24 AOS(R 2 And (21), uniformly stirring and mixing to obtain the high-temperature salt-resistant foaming agent for the thick oil steam flooding.
The molecular formula of the fatty alcohol polyoxyethylene ether glucoside is as follows: (C) 6 H 11 O 5 ) 3 (CH 2 CH 2 O) 4 OC 14 H 29 。
C 20～24 The molecular formula of AOS is as follows: c 21 H 43 -CH＝CH-(CH 2 )-SO 3 M (M is selected from Na) + 、K + 、NH 4 + Any one of the cations in (1)
The components and the proportion of the high-temperature salt-resistant foaming agent for the thickened oil steam flooding are determined on the basis of a large number of experiments, and any change can cause unqualified detection indexes.
Comparative example 1
Adding 300kg of water into a reaction kettle, and adding 400kg of fatty alcohol-polyoxyethylene ether glucoside at the temperature of 50 DEG CMixing with 100kg methanol, stirring, adding 200kgC 20～24 And AOS, and stirring and uniformly mixing to obtain the high-temperature salt-resistant foaming agent for the thick oil steam flooding.
The molecular formula of the fatty alcohol polyoxyethylene ether glucoside is as follows: (C) 6 H 11 O 5 ) 2 (CH 2 CH 2 O) 3 OC 12 H 25 。
C 20～24 The molecular formula of AOS is as follows: c 17 H 35 -CH＝CH-(CH 2 )-SO 3 M (M is selected from Na) + 、K + 、NH 4 + Any one of the cations in (1)
Comparative example 1 is a high-temperature salt-resistant foaming agent for thickened oil steam flooding obtained by removing the high-temperature-resistant chelating agent MA/AA in the formula of example 1, the amount of the high-temperature-resistant chelating agent MA/AA is supplemented by water, and the foam performance, the temperature resistance and the resistance factor do not reach the standard.
Comparative example 2
Adding 680kg of water into a reaction kettle, adding 20kg of high temperature resistant chelating agent MA/AA at the temperature of 50 ℃, and stirring and uniformly mixing; then 100kg of methanol is added, and after fully stirring the mixture evenly, 200kgC is finally added 20～24 And AOS, and stirring and uniformly mixing to obtain the high-temperature salt-resistant foaming agent for the thick oil steam flooding.
Comparative example 2 is a high-temperature salt-resistant foaming agent for thickened oil steam flooding obtained by removing fatty alcohol polyoxyethylene ether glucoside in the formula of example 1, the amount of the fatty alcohol polyoxyethylene ether glucoside is supplemented with water, and the foaming performance, the temperature resistance and the resistance factor do not reach the standard.
Said C is 20～24 The molecular formula of AOS is as follows: c 17 H 35 -CH＝CH-(CH 2 )-SO 3 M (M is selected from Na) + 、K + 、NH 4 + Any one of the cations in (1)
Comparative example 3
Adding 480kg of water into a reaction kettle, adding 20kg of high-temperature-resistant chelating agent MA/AA at the temperature of 50 ℃, and uniformly stirring; 400kg of fatty alcohol polyoxyethylene ether glucoside (R) are then added 1 12, m-2, n-3) and 100kg of methanol, and stirring the mixture sufficiently and uniformly to obtain the compoundHigh-temperature salt-resistant foaming agent for thick oil steam flooding.
Comparative example 3 removal of C from the formulation of example 1 20～24 AOS-derived high-temperature salt-resistant foaming agent for steam flooding of thickened oil, C 20～24 The amount of AOS is supplemented with water, and the foam performance, the temperature resistance and the resistance factor do not reach the standard.
The molecular formula of the fatty alcohol polyoxyethylene ether glucoside is as follows: (C) 6 H 11 O 5 ) 2 (CH 2 CH 2 O) 3 OC 12 H 25 。
Comparative example 4
281kg of water is added into a reaction kettle, 19kg of high temperature resistant chelating agent MA/AA is added at the temperature of 50 ℃, and the mixture is stirred and mixed evenly; adding 400kg fatty alcohol-polyoxyethylene ether glucoside and 100kg methanol, stirring, and adding 200kgC 20～24 And AOS, and stirring and uniformly mixing to obtain the high-temperature salt-resistant foaming agent for the thick oil steam flooding.
Comparative example 4 is that the high temperature chelating agent MA/AA in the formulation of the embodiment 1 deviates from the range of 2-3%, namely 19kg of high temperature chelating agent MA/AA (1.9%) is added to obtain the high temperature salt resistant foaming agent for the thick oil steam flooding, the excessive high temperature chelating agent MA/AA is removed from water, and the foaming performance, the temperature resistance and the resistance factor do not reach the standard.
The molecular formula of the fatty alcohol polyoxyethylene ether glucoside is as follows: (C) 6 H 11 O 5 ) 2 (CH 2 CH 2 O) 3 OC 12 H 25 。
C 20～24 The molecular formula of AOS is as follows: c 17 H 35 -CH＝CH-(CH 2 )-SO 3 M (M is selected from Na) + 、K + 、NH4 + Any one of the cations in (1)
Comparative example 5
Adding 230kg of water into a reaction kettle, adding 20kg of high-temperature-resistant chelating agent MA/AA at the temperature of 50 ℃, and uniformly stirring; adding 450kg of fatty alcohol-polyoxyethylene ether glucoside and 100kg of methanol, fully stirring uniformly, and finally adding 200kgC 20～24 AOS, stirring and mixing evenly to obtain the viscous oil for steam floodingA warm salt-resistant foaming agent.
Comparative example 5 is that the fatty alcohol polyoxyethylene ether glucoside in the formulation of example 1 exceeds the range of 30-40%, namely, 450kg (45%) of fatty alcohol polyoxyethylene ether glucoside is added to obtain the high-temperature salt-resistant foaming agent for thickened oil steam flooding, the excessive fatty alcohol polyoxyethylene ether glucoside is removed from water, and the foaming performance, the temperature resistance and the resistance factor do not reach the standards.
The molecular formula of the fatty alcohol polyoxyethylene ether glucoside is as follows: (C) 6 H 11 O 5 ) 2 (CH 2 CH 2 O) 3 OC 12 H 25 。
C 20～24 The molecular formula of AOS is as follows: c 17 H 35 -CH＝CH-(CH 2 )-SO 3 M (M is selected from Na) + 、K + 、NH 4 + Any cation of (1).
Comparative example 6
Adding 330kg of water into a reaction kettle, adding 20kg of high-temperature-resistant chelating agent MA/AA at the temperature of 50 ℃, and uniformly stirring; 400kg of fatty alcohol polyoxyethylene ether glucoside (R) are then added 1 12, m-2, n-3) and 100kg of methanol, and then adding 150kgC 20～24 AOS(R 2 17), stirring and uniformly mixing to obtain the high-temperature salt-resistant foaming agent for the thick oil steam flooding.
Comparative example 6 is C in the formulation of example 1 20～24 AOS deviates from the range of 20% -30%, i.e. 150kgC is added 20～24 AOS (15%), high-temp salt-resistant foaming agent for steam flooding of thickened oil and less C 20～24 The amount of AOS is supplemented with water, and the foam performance, the temperature resistance and the resistance factor do not reach the standard.
The molecular formula of the fatty alcohol polyoxyethylene ether glucoside is as follows: (C) 6 H 11 O 5 ) 2 (CH 2 CH 2 O) 3 OC 12 H 25 。
C 20～24 The molecular formula of AOS is as follows: c 17 H 35 -CH＝CH-(CH 2 )-SO 3 M (M is selected from Na) + 、K + 、NH 4 + Any one of the cations in (1)
Comparative example 7
Comparative example 7 is a high-temperature foaming agent on the market, has poor compatibility with water with the mineralization degree of 200000mg/L, and does not reach the standards of the foaming performance, the temperature resistance and the resistance factor.
Performance testing
And (3) testing conditions are as follows:
1. testing an instrument: a high-temperature high-pressure foam scanner, a rock core displacement flow and a high-temperature high-pressure reaction kettle.
2. Test water: the mineralization degree of injected water in a certain area of the victory oil field is 200000mg/L, and the concentration of calcium and magnesium ions is 5000 mg/L.
The test method comprises the following steps:
1. foam volume and half-life test:
1) injecting water into a certain block of the Shengli oil field to prepare a 0.5% solution of a high-temperature salt-resistant foaming agent for thickened oil steam flooding, placing 200.0mL of the prepared solution into a sample container of a high-temperature high-pressure foam scanner, injecting 100mL of the prepared solution into a sample cavity, setting the temperature to be 200 ℃, introducing nitrogen to 2MPa, keeping the temperature for 30min, and heating to the required temperature.
2) Adjusting gas mass flow meter controller to 200cm 3 Injecting nitrogen at the speed of/min, stopping injecting nitrogen when the foam volume reaches 200mL, recording the maximum volume of the foam as an initial value, and then recording the time corresponding to the volume of the foam when the volume is reduced to half of the initial value, namely the half-life period of the foam.
2. And (3) testing temperature resistance:
injecting water into a certain block of a Shengli oilfield to prepare 200mL of 0.5% high-temperature salt-resistant foaming agent water solution for thickened oil steam flooding, putting the high-temperature salt-resistant foaming agent water solution into a high-pressure container, injecting nitrogen to discharge air, closing a valve of the high-pressure container, heating to 300 ℃, keeping the temperature for 12h, cooling and taking out, and measuring the foaming volume and the foam half-life period of the high-temperature salt-resistant foaming agent for thickened oil steam flooding at 200 ℃.
3. Resistance factor:
tested according to the method of 4.2.7 in Q/SH 10202372-2020.
The high-temperature salt-resistant foaming agents for steam flooding of thickened oils obtained in the above examples 1 to 6 and comparative examples 1 to 7 were subjected to the tests of foaming property, resistance factor, and temperature resistance according to the above test methods, and the test results are shown in tables 1 to 3.
TABLE 1 Pre-temperature resistance of high-temperature salt-resistant foaming agent for steam flooding of thickened oils
TABLE 2 resistance factor of high temperature salt-resistant foaming agent for steam flooding of thickened oil
| Sample name | Resistance factor |
| Example 1 | 26 |
| Example 2 | 23 |
| Example 3 | 22 |
| Example 4 | 24 |
| Example 5 | 22 |
| Example 6 | 25 |
| Comparative example 1 | 10 |
| Comparative example 2 | 15 |
| Comparative example 3 | 14 |
| Comparative example 4 | 15 |
| Comparative example 5 | 14 |
| Comparative example 6 | 16 |
| Comparative example 7 | 8 |
TABLE 3 high-temp. salt-resistant foaming agent for steam flooding of thickened oil
As can be seen from tables 1-3 above, the formulations provided by the present invention are based on fatty alcohol polyoxyethylene ether glucoside, C 20～24 Under the synergistic action of AOS and high temperature resistant chelating agent MA/AA, the obtained high temperature salt resistant foaming agent for the thickened oil steam flooding has good compatibility with formation water with the mineralization degree of 200000mg/LAfter the high-temperature resistant crude oil is resistant to 300 ℃, the high foaming performance and the high resistance factor can be still maintained, the steam channeling and the overtopping of steam can be effectively inhibited under the action of nitrogen, and the displacement effect of the steam is fully exerted, so that the recovery ratio of the crude oil is greatly improved.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (9)
1. A high-temperature salt-resistant foaming agent is characterized by comprising the following components: 30-40% of fatty alcohol-polyoxyethylene ether glucoside and C 20 ～ 24 20-30% of AOS, 2-3% of chelating agent, 10-15% of low carbon alcohol and water.
2. The high temperature salt-resistant foaming agent as claimed in claim 1, wherein the fatty alcohol polyoxyethylene ether glucoside has the following formula:
(C 6 H 11 O 5 ) m (CH 2 CH 2 O) n OR 1
wherein R is 1 Is an alkyl group having 12 to 14 carbons, m is 2 or 3, and n is 3 or 4. It is understood that R 1 Alkyl groups having 12, 13, 14 carbons are possible.
3. The high temperature salt tolerant foaming agent of claim 1, wherein C is 20～24 The molecular formula of AOS is as follows:
R 2 -CH＝CH-(CH 2 )-SO 3 M
wherein R is 2 Is alkyl with 17-21 carbons, M is selected from Na + 、K + 、NH 4 + Any one of the above cations.
4. The high temperature resistant of claim 1Salt foaming agent, characterized in that C 20～24 AOS is an unsaturated alkyl sulfonate with a hydrophobic chain of 20-24 carbon atoms.
5. A high temperature salt and foam blowing agent as claimed in claim 1 wherein said chelating agent is MA/AA.
6. The high-temperature salt-resistant foaming agent as claimed in claim 1, wherein the lower alcohol is one or more of methanol, ethanol and isopropanol.
7. The method for preparing a high-temperature salt-resistant foaming agent as claimed in any one of claims 1 to 6, wherein the chelating agent is dissolved in water of 40 to 50 ℃ and stirred uniformly, then the fatty alcohol-polyoxyethylene ether glucoside and the lower alcohol are added, and after the mixture is stirred uniformly, C is added 20～24 And AOS, and uniformly stirring to obtain the product.
8. Use of the high temperature salt resistant foaming agent of any of claims 1-6 in heavy oil steam flooding.
9. The application of claim 8, wherein when the foaming agent is compatible with water with a mineralization degree of 0-200000mg/L and a calcium and magnesium ion concentration of less than 5000mg/L, the foaming volume is not less than 200mL, the half-life period is not less than 20s, after the foaming agent is resistant to 300 ℃, the foaming volume is not less than 200mL, the half-life period is not less than 18s, and the resistance factor is not less than 20.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4643256A (en) * | 1985-03-18 | 1987-02-17 | Shell Oil Company | Steam-foaming surfactant mixtures which are tolerant of divalent ions |
| CN106867490A (en) * | 2017-01-18 | 2017-06-20 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of chelating de-plugging agent suitable for complicated fouling reservoir and preparation method thereof |
| CN108865092A (en) * | 2018-05-21 | 2018-11-23 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Water injection well unblocking and injection increasing sustained release chelated acid and preparation method and blockage -removing and stimulation |
| CN112159650A (en) * | 2020-11-23 | 2021-01-01 | 山东新港化工有限公司 | High-temperature-resistant viscosity-reduction foaming agent for thick oil steam chemical flooding and preparation method and application thereof |
-
2021
- 2021-03-03 CN CN202110237409.5A patent/CN115029119B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4643256A (en) * | 1985-03-18 | 1987-02-17 | Shell Oil Company | Steam-foaming surfactant mixtures which are tolerant of divalent ions |
| CN106867490A (en) * | 2017-01-18 | 2017-06-20 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of chelating de-plugging agent suitable for complicated fouling reservoir and preparation method thereof |
| CN108865092A (en) * | 2018-05-21 | 2018-11-23 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Water injection well unblocking and injection increasing sustained release chelated acid and preparation method and blockage -removing and stimulation |
| CN112159650A (en) * | 2020-11-23 | 2021-01-01 | 山东新港化工有限公司 | High-temperature-resistant viscosity-reduction foaming agent for thick oil steam chemical flooding and preparation method and application thereof |
Non-Patent Citations (2)
| Title |
|---|
| 孟庆国;周茵;兰文龙;石景文;张道鹏;: "环境友好型泡沫除尘剂协同试验研究", 矿业研究与开发, vol. 1, no. 04, pages 105 - 110 * |
| 郑晓宇等主编: "《精细化工概论》", 化学工业出版社 * |
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