CN105985761B - Crude oil emulsifier and application thereof - Google Patents
Crude oil emulsifier and application thereof Download PDFInfo
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- CN105985761B CN105985761B CN201510075968.5A CN201510075968A CN105985761B CN 105985761 B CN105985761 B CN 105985761B CN 201510075968 A CN201510075968 A CN 201510075968A CN 105985761 B CN105985761 B CN 105985761B
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- crude oil
- emulsifying agent
- acid
- oil emulsifying
- mineralising
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- 239000010779 crude oil Substances 0.000 title claims abstract description 60
- 239000003995 emulsifying agent Substances 0.000 title claims abstract description 50
- 150000007524 organic acids Chemical class 0.000 claims abstract description 10
- 150000003839 salts Chemical class 0.000 claims abstract description 3
- 239000007864 aqueous solution Substances 0.000 claims description 19
- 150000001408 amides Chemical class 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 5
- 239000004094 surface-active agent Substances 0.000 claims description 5
- 239000012752 auxiliary agent Substances 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 3
- 150000001412 amines Chemical class 0.000 claims description 2
- 229920001577 copolymer Polymers 0.000 claims description 2
- 150000004676 glycans Chemical class 0.000 claims description 2
- 230000002209 hydrophobic effect Effects 0.000 claims description 2
- 229920001282 polysaccharide Polymers 0.000 claims description 2
- 239000005017 polysaccharide Substances 0.000 claims description 2
- 125000004417 unsaturated alkyl group Chemical group 0.000 claims description 2
- 235000021122 unsaturated fatty acids Nutrition 0.000 claims description 2
- 150000004670 unsaturated fatty acids Chemical class 0.000 claims description 2
- 125000003647 acryloyl group Chemical group O=C([*])C([H])=C([H])[H] 0.000 claims 1
- 239000003921 oil Substances 0.000 abstract description 23
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract description 9
- 239000011575 calcium Substances 0.000 abstract description 9
- 238000011084 recovery Methods 0.000 abstract description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N EtOH Substances CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 8
- 235000014113 dietary fatty acids Nutrition 0.000 abstract description 8
- 229930195729 fatty acid Natural products 0.000 abstract description 8
- 239000000194 fatty acid Substances 0.000 abstract description 8
- -1 fatty acid ethanol amide Chemical class 0.000 abstract description 8
- 230000001804 emulsifying effect Effects 0.000 abstract description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052791 calcium Inorganic materials 0.000 abstract description 2
- 239000011777 magnesium Substances 0.000 abstract description 2
- 229910052749 magnesium Inorganic materials 0.000 abstract description 2
- 235000019198 oils Nutrition 0.000 description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- 229910001868 water Inorganic materials 0.000 description 17
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 16
- 238000004945 emulsification Methods 0.000 description 11
- 238000002360 preparation method Methods 0.000 description 10
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 8
- 239000002253 acid Substances 0.000 description 8
- 239000011521 glass Substances 0.000 description 8
- 239000004519 grease Substances 0.000 description 8
- 229910001425 magnesium ion Inorganic materials 0.000 description 8
- 239000011780 sodium chloride Substances 0.000 description 8
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 7
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 7
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 7
- 239000005642 Oleic acid Substances 0.000 description 7
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 7
- 229910001424 calcium ion Inorganic materials 0.000 description 7
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 7
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 7
- 239000003240 coconut oil Substances 0.000 description 4
- 235000019864 coconut oil Nutrition 0.000 description 4
- 238000013329 compounding Methods 0.000 description 4
- GHVNFZFCNZKVNT-UHFFFAOYSA-N decanoic acid Chemical compound CCCCCCCCCC(O)=O GHVNFZFCNZKVNT-UHFFFAOYSA-N 0.000 description 4
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 4
- VKOBVWXKNCXXDE-UHFFFAOYSA-N icosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCC(O)=O VKOBVWXKNCXXDE-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 4
- 239000009671 shengli Substances 0.000 description 4
- 239000000839 emulsion Substances 0.000 description 3
- OYHQOLUKZRVURQ-NTGFUMLPSA-N (9Z,12Z)-9,10,12,13-tetratritiooctadeca-9,12-dienoic acid Chemical compound C(CCCCCCC\C(=C(/C\C(=C(/CCCCC)\[3H])\[3H])\[3H])\[3H])(=O)O OYHQOLUKZRVURQ-NTGFUMLPSA-N 0.000 description 2
- DPUOLQHDNGRHBS-UHFFFAOYSA-N Brassidinsaeure Natural products CCCCCCCCC=CCCCCCCCCCCCC(O)=O DPUOLQHDNGRHBS-UHFFFAOYSA-N 0.000 description 2
- 239000005632 Capric acid (CAS 334-48-5) Substances 0.000 description 2
- URXZXNYJPAJJOQ-UHFFFAOYSA-N Erucic acid Natural products CCCCCCC=CCCCCCCCCCCCC(O)=O URXZXNYJPAJJOQ-UHFFFAOYSA-N 0.000 description 2
- 239000005639 Lauric acid Substances 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- OBETXYAYXDNJHR-UHFFFAOYSA-N alpha-ethylcaproic acid Natural products CCCCC(CC)C(O)=O OBETXYAYXDNJHR-UHFFFAOYSA-N 0.000 description 2
- DTOSIQBPPRVQHS-PDBXOOCHSA-N alpha-linolenic acid Chemical compound CC\C=C/C\C=C/C\C=C/CCCCCCCC(O)=O DTOSIQBPPRVQHS-PDBXOOCHSA-N 0.000 description 2
- 235000020661 alpha-linolenic acid Nutrition 0.000 description 2
- NPAKNKYSJIDKMW-UHFFFAOYSA-N carvedilol Chemical compound COC1=CC=CC=C1OCCNCC(O)COC1=CC=CC2=NC3=CC=C[CH]C3=C12 NPAKNKYSJIDKMW-UHFFFAOYSA-N 0.000 description 2
- 229960004195 carvedilol Drugs 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- DPUOLQHDNGRHBS-KTKRTIGZSA-N erucic acid Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(O)=O DPUOLQHDNGRHBS-KTKRTIGZSA-N 0.000 description 2
- 239000008233 hard water Substances 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- 230000015784 hyperosmotic salinity response Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229960004488 linolenic acid Drugs 0.000 description 2
- KQQKGWQCNNTQJW-UHFFFAOYSA-N linolenic acid Natural products CC=CCCC=CCC=CCCCCCCCC(O)=O KQQKGWQCNNTQJW-UHFFFAOYSA-N 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 235000021313 oleic acid Nutrition 0.000 description 2
- BOWVQLFMWHZBEF-KTKRTIGZSA-N oleoyl ethanolamide Chemical group CCCCCCCC\C=C/CCCCCCCC(=O)NCCO BOWVQLFMWHZBEF-KTKRTIGZSA-N 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- HLZKNKRTKFSKGZ-UHFFFAOYSA-N tetradecan-1-ol Chemical compound CCCCCCCCCCCCCCO HLZKNKRTKFSKGZ-UHFFFAOYSA-N 0.000 description 2
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 235000021353 Lignoceric acid Nutrition 0.000 description 1
- CQXMAMUUWHYSIY-UHFFFAOYSA-N Lignoceric acid Natural products CCCCCCCCCCCCCCCCCCCCCCCC(=O)OCCC1=CC=C(O)C=C1 CQXMAMUUWHYSIY-UHFFFAOYSA-N 0.000 description 1
- OYHQOLUKZRVURQ-HZJYTTRNSA-N Linoleic acid Chemical compound CCCCC\C=C/C\C=C/CCCCCCCC(O)=O OYHQOLUKZRVURQ-HZJYTTRNSA-N 0.000 description 1
- 229920006322 acrylamide copolymer Polymers 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 230000005591 charge neutralization Effects 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 235000020778 linoleic acid Nutrition 0.000 description 1
- OYHQOLUKZRVURQ-IXWMQOLASA-N linoleic acid Natural products CCCCC\C=C/C\C=C\CCCCCCCC(O)=O OYHQOLUKZRVURQ-IXWMQOLASA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229940043348 myristyl alcohol Drugs 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229940051841 polyoxyethylene ether Drugs 0.000 description 1
- 229920000056 polyoxyethylene ether Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000003784 tall oil Substances 0.000 description 1
- QZZGJDVWLFXDLK-UHFFFAOYSA-N tetracosanoic acid Chemical group CCCCCCCCCCCCCCCCCCCCCCCC(O)=O QZZGJDVWLFXDLK-UHFFFAOYSA-N 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000002569 water oil cream Substances 0.000 description 1
Landscapes
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention discloses a crude oil emulsifier. According to the invention, by utilizing the action principle of acid-base ion pairs, fatty acid ethanol amide and organic acid are mixed and compounded to obtain a crude oil emulsifier with excellent performance; the crude oil emulsifier disclosed by the invention is good in emulsifying property, simple to prepare, good in thermal stability and salt and calcium and magnesium resistance, capable of being used in a high-temperature and high-salinity oil field environment, and capable of improving the recovery ratio of crude oil. Meanwhile, the invention also discloses the application of the crude oil emulsifier.
Description
Technical field
The present invention relates to field of oilfield chemistry.More particularly, to a kind of crude oil emulsifying agent and application.
Background technique
After petroleum have passed through primary oil recovery and secondary oil recovery, still there is 60%~70% remaining oil with oil droplet or oil film
Form is stranded in underground, and suitable tertiary oil recovery method is found in an urgent demand, to improve recovery ratio to the maximum extent.Chemical flooding is
The main method that recovery ratio is improved in tertiary oil recovery, the surfactant flooding in chemical flooding improve that recovery ratio amplitude is big, applicable surface
It extensively, is a kind of technology of reservoir sweep that development potentiality is big.Existing surfactant flooding mainly by overcoming capillary force, reduces interface
Tension improves microscopic oil displacement efficiency to realize, furthermore oil-water emulsion is also to the influence of oil displacement efficiency and its important.Emulsification
Agent makes emulsification of crude oil at small oil droplet, and partial size is less than hollow billet diameter, and oil droplet is by will not be subject to the work of capillary force when rock duct
With without overcoming capillary force, so that it may effectively improve tar productivity.
Fatty acid ethanol amide is a kind of nonionic surfactant, has good thickening and foam stability energy, to crude oil
There is certain emulsification, can be used for tertiary oil recovery.A certain amount of organic acid substance is added in fatty acid ethanol amide, such as
Octanoic acid, capric acid, lauric acid, myristic acid, palmitinic acid, stearic acid, oleic acid, linoleic acid, Carvedilol acid, linolenic acid, arachidic acid, erucic acid
Deng being acted on by electrical attraction between acid ion alkali ion pair, fatty acid ethanol amide molecule and organic acid molecule are on oil-water interfaces
Close-packed arrays enhance emulsifying capacity and emulsion stability；Simultaneously because the characteristics of molecular structure (positive and negative charge neutralization), have very
Good anticalcium magnesium ion ability, has the possibility used in the oilfield environment of high salinity.
Summary of the invention
It is an object of the present invention to provide a kind of crude oil emulsifying agents, and emulsifier preparation process is simple, have high
Surface and interface activity, emulsifying capacity and emulsion stability, resistance to hard water and salt tolerance.
It is another object of the present invention to provide the applications of the crude oil emulsifying agent.
In order to achieve the above objectives, the present invention adopts the following technical solutions:
A kind of crude oil emulsifying agent, the crude oil emulsifying agent include fatty acid ethanol amide and organic acid.
Preferably, the mass ratio of the fatty acid ethanol amide and organic acid is 1:1-100:1.
Preferably, the fatty acid ethanol amide includes at least and has the following structural formula a kind of substance:
(a) with the fatty monoethanol amide of structural formula (i)；
(b) there is structural formula (ii) fatty diglycollic amide；
In formula (i) and (ii), R is the saturation or unsaturated alkyl of C8-C18.
Preferably, saturation or unsaturated fatty acid one or more of of the organic acid selected from C8-C24, such as octanoic acid,
Capric acid, lauric acid, myristic acid, palmitinic acid, stearic acid, oleic acid, linoleic acid, Carvedilol acid, linolenic acid, arachidic acid, erucic acid and its
Its acid etc..
Application of the crude oil emulsifying agent in oilfield chemistry:
The mineralising aqueous solution of crude oil emulsifying agent is prepared, the crude oil emulsifying agent contains or not contain auxiliary agent；The crude oil cream
The concentration of agent mineralising aqueous solution is 0.01wt%-10wt%；Preferred concentration is 0.1wt%-5wt%.
Preferably, the auxiliary agent be selected from inorganic salts, surfactant, acrylamide copolymer, polysaccharide polymer and
One or more of hydrophobic associated copolymer.
Beneficial effects of the present invention are as follows:
(1) crude oil emulsifying agent of the invention is mixed to get by fatty acid ethanol amide and organic acid compounding, preparation process
Simply；
(2) crude oil emulsifying agent of the invention has high surface and interface activity, emulsifying capacity and emulsion stability；
(3) crude oil emulsifying agent of the invention has resistance to hard water and salt tolerance；
(4) raw material of crude oil emulsifying agent of the invention not fully relies on oil product；
(5) as the temperature rises, emulsifiability has good crude oil emulsifying agent of the invention without too big change
Thermal stability.
Specific embodiment
In order to illustrate more clearly of the present invention, below with reference to preferred embodiment, the present invention is described further.Ability
Field technique personnel should be appreciated that following specifically described content is illustrative and be not restrictive, this should not be limited with this
The protection scope of invention.
Embodiment 1
(crude oil emulsifying agent is coconut oil diethanol to the mineralising aqueous solution for the crude oil emulsifying agent that preparation mass concentration is 0.5%
Amide and oleic acid 10:1 in mass ratio mixing are compounded and are obtained, and NaCl concentration is 25000mg/L, calcium and magnesium ion concentration in mineralized water
For 600mg/L)；Take this crude oil emulsifying agent mineralising aqueous solution 7mL and 3g Shengli Oil Field, Shandong crude oil in 15mL teat glass, it is close
It seals, is placed in constant temperature 1h in 80 DEG C of water-baths, take out, overturn 20 times, grease mutually emulsification completely continues to be put in 80 DEG C of water-baths, see
It examines, it is interior for 24 hours to be precipitated without water phase.
Embodiment 2
(crude oil emulsifying agent is stearic acid diethanol acyl to the mineralising aqueous solution for the crude oil emulsifying agent that preparation mass concentration is 1%
Amine and oleic acid 15:1 in mass ratio mixing are compounded and are obtained, and NaCl concentration is 25000mg/L in mineralized water, and calcium and magnesium ion concentration is
600mg/L)；It takes this crude oil emulsifying agent mineralising aqueous solution 7mL and 3g Shengli Oil Field, Shandong crude oil in 15mL teat glass, seals
It is good, it is put in constant temperature 1h in 110 DEG C of insulating boxs, is taken out, is overturn 20 times, grease mutually emulsification completely continues to be put in insulating box constant temperature, see
It examines, is precipitated in 12h without water phase.
Embodiment 3
(crude oil emulsifying agent is tall oil acid list second to the mineralising aqueous solution for the crude oil emulsifying agent that preparation mass concentration is 0.2%
Alkylolamides, cocinic acid and surfactant myristyl alcohol polyoxyethylene ether carboxylic acid sodium 20:1:1 in mass ratio mixing compounding and
, NaCl concentration is 30000mg/L in mineralized water, and calcium and magnesium ion concentration is 500mg/L)；Take this crude oil emulsifying agent mineralising water-soluble
Liquid 7mL and 3g Shengli Oil Field, Shandong crude oil is sealed in 15mL teat glass, is put in constant temperature 1h in 80 DEG C of water-baths, takes out, turns over
Turn 20 times, grease mutually completely emulsification, continue to be put in 80 DEG C of water-baths, observe, for 24 hours in without water phase be precipitated
Embodiment 4
(crude oil emulsifying agent is tetracosanoic acid list second to the mineralising aqueous solution for the crude oil emulsifying agent that preparation mass concentration is 0.2%
Alkylolamides, cocinic acid and partially hydrolyzed polyacrylamide (PHPA) HPAM 20:1:4 in mass ratio mixing are compounded and are obtained, in mineralized water
NaCl concentration is 19000mg/L, and calcium and magnesium ion concentration is 500mg/L)；Take the mountain this crude oil emulsifying agent mineralising aqueous solution 7mL and 3g
Eastern oil from Shengli oil field is sealed in 15mL teat glass, is put in constant temperature 1h in 80 DEG C of water-baths, takes out, and overturns 20 times, grease
Mutually emulsification completely, continues to be put in 80 DEG C of water-baths, observes, interior for 24 hours to be precipitated without water phase.
Embodiment 5
(crude oil emulsifying agent is coconut oil diethanol to the mineralising aqueous solution for the crude oil emulsifying agent that preparation mass concentration is 0.3%
Amide and oleic acid 25:1 in mass ratio mixing are compounded and are obtained, and NaCl concentration is 5000mg/L in mineralized water, and calcium and magnesium ion concentration is
100mg/L)；It takes this crude oil emulsifying agent mineralising aqueous solution 7mL and 3g Daqing oil field crude oil in 15mL teat glass, is sealed,
It is put in constant temperature 1h in 55 DEG C of water-baths, is taken out, is overturn 20 times, grease mutually emulsification completely continues to be put in 55 DEG C of water-baths, observe, for 24 hours
Interior no water phase is precipitated.
Embodiment 6
(crude oil emulsifying agent is oleic monoethanolamide to the mineralising aqueous solution for the crude oil emulsifying agent that preparation mass concentration is 1%
Compounding is mixed with cocinic acid 25:1 in mass ratio and is obtained, and NaCl concentration is 5000mg/L in mineralized water, and calcium and magnesium ion concentration is
100mg/L)；It takes this crude oil emulsifying agent mineralising aqueous solution 7mL and 3g Daqing oil field crude oil in 15mL teat glass, is sealed,
It is put in constant temperature 1h in 95 DEG C of water-baths, is taken out, is overturn 20 times, grease mutually emulsification completely continues to be put in 95 DEG C of water-baths, observe, for 24 hours
Interior no water phase is precipitated
Embodiment 7
(crude oil emulsifying agent is coconut oil diethanol to the mineralising aqueous solution for the crude oil emulsifying agent that preparation mass concentration is 0.2%
Amide, oleic acid, linoleic acid 20:1:1 in mass ratio mixing compounding and obtain, in mineralized water NaCl concentration be 5000mg/L, calcium, magnesium from
Sub- concentration is 100mg/L)；Take this crude oil emulsifying agent mineralising aqueous solution 7mL and 3g Daqing oil field crude oil in 15mL teat glass,
It being sealed, is put in constant temperature 1h in 55 DEG C of water-baths, take out, overturn 20 times, grease mutually emulsification completely continues to be put in 55 DEG C of water-baths,
Observation, it is interior for 24 hours to be precipitated without water phase.
Embodiment 8
(crude oil emulsifying agent is coconut oil diethanol to the mineralising aqueous solution for the crude oil emulsifying agent that preparation mass concentration is 0.3%
Amide, oleic monoethanolamide and oleic acid 10:10:1 in mass ratio mixing are compounded and are obtained, and NaCl concentration is in mineralized water
5000mg/L, calcium and magnesium ion concentration are 100mg/L)；Take this crude oil emulsifying agent mineralising aqueous solution 7mL and 3g Daqing oil field crude oil
It in 15mL teat glass, is sealed, is put in constant temperature 1h in 55 DEG C of water-baths, take out, overturn 20 times, grease mutually emulsification completely, after
It is continuous to be put in 55 DEG C of water-baths, it observes, it is interior for 24 hours to be precipitated without water phase.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention may be used also on the basis of the above description for those of ordinary skill in the art
To make other variations or changes in different ways, all embodiments can not be exhaustive here, it is all to belong to this hair
The obvious changes or variations that bright technical solution is extended out are still in the scope of protection of the present invention.
Claims (4)
1. a kind of crude oil emulsifying agent, it is characterised in that: the crude oil emulsifying agent includes fatty monoethanol amide and organic acid；Its
In, the fatty monoethanol amide is to have the following structural formula a kind of substance:
；
R is the saturation or unsaturated alkyl of C8-C18 in formula；
The organic acid is selected from one or more of saturation and unsaturated fatty acid of C8-C24；
The mass ratio of the fatty monoethanol amide and organic acid is 10:1-25:1.
2. application of the crude oil emulsifying agent described in claim 1 in oilfield chemistry.
3. application according to claim 2, it is characterised in that: prepare the mineralising aqueous solution of crude oil emulsifying agent, the crude oil
Emulsifier contains or not contain auxiliary agent；The concentration of the crude oil emulsifying agent mineralising aqueous solution is 0. 01wt%-10wt%.
4. application according to claim 3, it is characterised in that: the auxiliary agent is selected from inorganic salts, surfactant, acryloyl
One or more of amine polymer, polysaccharide polymer and hydrophobic associated copolymer.
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| CN201510075968.5A CN105985761B (en) | 2015-02-12 | 2015-02-12 | Crude oil emulsifier and application thereof |
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| CN105985761B true CN105985761B (en) | 2019-02-15 |
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| CN108611081A (en) * | 2018-06-08 | 2018-10-02 | 烟台智本知识产权运营管理有限公司 | A kind of emulsifier and preparation method thereof of high temperature and high salt viscous crude |
| CN111088025B (en) * | 2018-10-23 | 2022-05-24 | 中国石油化工股份有限公司 | Efficient oil washing agent for improving carbon dioxide oil displacement efficiency and preparation method and application thereof |
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| US4374737A (en) * | 1980-01-14 | 1983-02-22 | Dana E. Larson | Nonpolluting drilling fluid composition |
| CN1231280A (en) * | 1998-04-03 | 1999-10-13 | 大庆石油学院 | Nonionic surface active agent for tertiary oil recovery and productive method thereof |
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| CN101475796A (en) * | 2009-01-15 | 2009-07-08 | 山东大学 | Lyotropic liquid crystal flooding system, as well as preparation method and use thereof |
| CN103571450A (en) * | 2012-07-19 | 2014-02-12 | 中国石油天然气集团公司 | Low friction emulsifying acid liquid for fracturing acidification, and application thereof |
| CN103725268A (en) * | 2013-12-26 | 2014-04-16 | 安东石油技术（集团）有限公司 | High-temperature-resistant oil base drilling fluid emulsifier |
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| CN101475796A (en) * | 2009-01-15 | 2009-07-08 | 山东大学 | Lyotropic liquid crystal flooding system, as well as preparation method and use thereof |
| CN103571450A (en) * | 2012-07-19 | 2014-02-12 | 中国石油天然气集团公司 | Low friction emulsifying acid liquid for fracturing acidification, and application thereof |
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