CN112080265B - Blocking remover and preparation method thereof - Google Patents
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- CN112080265B CN112080265B CN202010873998.1A CN202010873998A CN112080265B CN 112080265 B CN112080265 B CN 112080265B CN 202010873998 A CN202010873998 A CN 202010873998A CN 112080265 B CN112080265 B CN 112080265B
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- 230000000903 blocking effect Effects 0.000 title claims abstract description 86
- 238000002360 preparation method Methods 0.000 title abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 82
- 239000002270 dispersing agent Substances 0.000 claims abstract description 71
- 239000002904 solvent Substances 0.000 claims abstract description 65
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 60
- 239000010426 asphalt Substances 0.000 claims abstract description 56
- 239000003146 anticoagulant agent Substances 0.000 claims abstract description 22
- 229940127219 anticoagulant drug Drugs 0.000 claims abstract description 22
- 230000008021 deposition Effects 0.000 claims abstract description 20
- CXWXQJXEFPUFDZ-UHFFFAOYSA-N tetralin Chemical compound C1=CC=C2CCCCC2=C1 CXWXQJXEFPUFDZ-UHFFFAOYSA-N 0.000 claims description 69
- 239000003795 chemical substances by application Substances 0.000 claims description 48
- XMGQYMWWDOXHJM-UHFFFAOYSA-N limonene Chemical compound CC(=C)C1CCC(C)=CC1 XMGQYMWWDOXHJM-UHFFFAOYSA-N 0.000 claims description 42
- 238000002156 mixing Methods 0.000 claims description 42
- 102000004190 Enzymes Human genes 0.000 claims description 39
- 108090000790 Enzymes Proteins 0.000 claims description 39
- 238000003756 stirring Methods 0.000 claims description 39
- 239000003921 oil Substances 0.000 claims description 33
- 230000001804 emulsifying effect Effects 0.000 claims description 30
- 239000003381 stabilizer Substances 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 26
- APVVRLGIFCYZHJ-UHFFFAOYSA-N trioctyl 2-hydroxypropane-1,2,3-tricarboxylate Chemical compound CCCCCCCCOC(=O)CC(O)(C(=O)OCCCCCCCC)CC(=O)OCCCCCCCC APVVRLGIFCYZHJ-UHFFFAOYSA-N 0.000 claims description 25
- 229920001661 Chitosan Polymers 0.000 claims description 23
- 229940049964 oleate Drugs 0.000 claims description 23
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 23
- TXBCHPGETQLSGV-UHFFFAOYSA-M sodium;2-(dodecylamino)propanoate Chemical compound [Na+].CCCCCCCCCCCCNC(C)C([O-])=O TXBCHPGETQLSGV-UHFFFAOYSA-M 0.000 claims description 23
- PXAJQJMDEXJWFB-UHFFFAOYSA-N acetone oxime Chemical compound CC(C)=NO PXAJQJMDEXJWFB-UHFFFAOYSA-N 0.000 claims description 22
- 150000001412 amines Chemical class 0.000 claims description 22
- 230000015556 catabolic process Effects 0.000 claims description 22
- 238000006731 degradation reaction Methods 0.000 claims description 22
- PEEKVIHQOHJITP-UHFFFAOYSA-N boric acid;propane-1,2,3-triol Chemical compound OB(O)O.OCC(O)CO PEEKVIHQOHJITP-UHFFFAOYSA-N 0.000 claims description 21
- 229940087305 limonene Drugs 0.000 claims description 21
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- 229910052708 sodium Inorganic materials 0.000 claims description 20
- 239000011734 sodium Substances 0.000 claims description 20
- XYXNTHIYBIDHGM-UHFFFAOYSA-N ammonium thiosulfate Chemical compound [NH4+].[NH4+].[O-]S([O-])(=O)=S XYXNTHIYBIDHGM-UHFFFAOYSA-N 0.000 claims description 19
- 230000033558 biomineral tissue development Effects 0.000 claims description 19
- 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 claims description 18
- 238000004062 sedimentation Methods 0.000 claims description 18
- 239000003112 inhibitor Substances 0.000 claims description 17
- ZVUVJTQITHFYHV-UHFFFAOYSA-M potassium;naphthalene-1-carboxylate Chemical compound [K+].C1=CC=C2C(C(=O)[O-])=CC=CC2=C1 ZVUVJTQITHFYHV-UHFFFAOYSA-M 0.000 claims description 17
- -1 polyoxyethylene chain Polymers 0.000 claims description 16
- 230000000593 degrading effect Effects 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 9
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 claims description 7
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 7
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 7
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 claims description 7
- 229960003237 betaine Drugs 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 7
- 229920000570 polyether Polymers 0.000 claims description 7
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 claims description 6
- 229920000858 Cyclodextrin Polymers 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- HFHDHCJBZVLPGP-UHFFFAOYSA-N schardinger α-dextrin Chemical compound O1C(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(O)C2O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC2C(O)C(O)C1OC2CO HFHDHCJBZVLPGP-UHFFFAOYSA-N 0.000 claims description 6
- 239000000176 sodium gluconate Substances 0.000 claims description 6
- 229940005574 sodium gluconate Drugs 0.000 claims description 6
- 235000012207 sodium gluconate Nutrition 0.000 claims description 6
- RNMDNPCBIKJCQP-UHFFFAOYSA-N 5-nonyl-7-oxabicyclo[4.1.0]hepta-1,3,5-trien-2-ol Chemical compound C(CCCCCCCC)C1=C2C(=C(C=C1)O)O2 RNMDNPCBIKJCQP-UHFFFAOYSA-N 0.000 claims description 5
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 claims description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 5
- HCGUSKQMLFEMKM-UHFFFAOYSA-N n-methyl-n-octyloctan-1-amine oxide Chemical compound CCCCCCCC[N+](C)([O-])CCCCCCCC HCGUSKQMLFEMKM-UHFFFAOYSA-N 0.000 claims description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 5
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 4
- CWNSVVHTTQBGQB-UHFFFAOYSA-N N,N-Diethyldodecanamide Chemical compound CCCCCCCCCCCC(=O)N(CC)CC CWNSVVHTTQBGQB-UHFFFAOYSA-N 0.000 claims description 3
- MQKHQXAYAIPBOX-UHFFFAOYSA-N benzoic acid;naphthalene Chemical compound OC(=O)C1=CC=CC=C1.C1=CC=CC2=CC=CC=C21 MQKHQXAYAIPBOX-UHFFFAOYSA-N 0.000 claims description 3
- ZLMJMSJWJFRBEC-OUBTZVSYSA-N potassium-40 Chemical compound [40K] ZLMJMSJWJFRBEC-OUBTZVSYSA-N 0.000 claims description 3
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 15
- 239000012071 phase Substances 0.000 description 19
- 238000004090 dissolution Methods 0.000 description 11
- 239000007788 liquid Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 7
- 239000006185 dispersion Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000011084 recovery Methods 0.000 description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- QFSNCROGCLRZHC-UHFFFAOYSA-N 2,3-dihydroxypropoxyboronic acid Chemical compound OCC(O)COB(O)O QFSNCROGCLRZHC-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000011384 asphalt concrete Substances 0.000 description 2
- 238000010170 biological method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 238000000053 physical method Methods 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
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- 238000005345 coagulation Methods 0.000 description 1
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- 230000007797 corrosion Effects 0.000 description 1
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- 230000009977 dual effect Effects 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-M hexanoate Chemical compound CCCCCC([O-])=O FUZZWVXGSFPDMH-UHFFFAOYSA-M 0.000 description 1
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Classifications
-
- 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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/524—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning organic depositions, e.g. paraffins or asphaltenes
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
- Detergent Compositions (AREA)
Abstract
The invention provides a blocking remover and a preparation method thereof. The blocking remover comprises: 0.4 to 1.4 parts by weight of an asphalt-degrading bio-enzyme; 1 to 10 parts by weight of an amphoteric emulsifier; 5 to 15 parts by weight of an oil-soluble dispersant; 1 to 10 parts by weight of a deposition anticoagulant; and 10 to 30 parts by weight of solvent water. Under the condition of using the preparation method of the blocking remover, the problems in the prior art are overcome, the rapid and efficient blocking removing effect on a wide range of asphalt concretions is realized, and the good and stable blocking removing effect can be realized in a larger temperature range.
Description
Technical Field
The invention relates to the technical field of oil reservoir exploitation, in particular to a blocking remover and a preparation method thereof.
Background
During the development of heavy crude oils and thick oils containing high asphaltenes, a large amount of asphaltene coagulates are precipitated from the crude oils through complex physicochemical processes. The asphaltene condensate can not only cause oil layer blockage, but also deposit on the inner wall of oil production equipment such as a near-wellbore area, a well pipe, a packer and the like, so that the crude oil yield is greatly reduced, and in severe cases, the oil well can be stopped or even scrapped. Therefore, how to reduce the asphaltene coagulates or effectively remove the asphaltene coagulates in the production process becomes a key problem for increasing and stabilizing the yield of petroleum. In the process of technology updating and development, a blocking remover for efficiently removing asphalt concretions is developed and researched, the inner walls of oil extraction key pipeline nodes such as a wellhead, a shaft bottom and the like are kept smooth, and the blocking remover becomes one of key attacking and customing targets of the current oil well blocking removing technology.
The asphalt coagulum is composed primarily of asphaltenes, gums, and small amounts of aromatics. Wherein the asphaltene is black brown fragile powdery solid, has strong polarity, is insoluble in ethanol and petroleum ether, and is easily soluble in benzene, chloroform and carbon tetrachloride. The colloid is semisolid brown viscous substance with strong polarity, and can be dissolved in organic solvents such as petroleum ether, benzene and gasoline. The blockage removing technology for the asphalt concretion mainly comprises a physical method, a chemical method and a biological method, wherein the physical method is divided into a mechanical method, a heat treatment method and an external force field method. The chemical method mainly utilizes organic solvent to dissolve asphalt concretion to different degrees. The biological method mainly uses biological enzyme to remove blockage. However, none of the prior art methods effectively solve the problem of asphalt condensate plugging the pipeline. The blocking remover tested in the oil field and mine field at home at present has the following problems: 1) The dissolution rate is slow; 2) The dissolution period is long; 3) The temperature dependence is high, most of blocking removers are volatile, the flash point is low, the safety performance is poor, and the blocking removers need to be used under a specific temperature condition.
Disclosure of Invention
The invention mainly aims to provide a blocking remover and a preparation method thereof, and aims to solve the problems that the blocking remover in the prior art is slow in dissolution rate, long in dissolution period and large in temperature dependence in the using process.
In order to achieve the above object, according to one aspect of the present invention, there is provided a deblocking agent comprising: 0.4 to 1.4 parts by weight of an asphalt-degrading bio-enzyme; 1 to 10 parts by weight of an amphoteric emulsifier; 5 to 15 parts by weight of an oil-soluble dispersant; 1 to 10 parts by weight of a deposition anticoagulant; and 10 to 30 parts by weight of solvent water.
Further, in the above-mentioned blocking remover, the weight ratio of the asphalt-degrading biological enzyme to the oil-soluble dispersant is in the range of 4.5 to 28; preferably, the weight ratio of the asphalt-degrading bio-enzyme to the oil-soluble dispersant is in the range of 13.3.
Further, in the above-mentioned deblocking agent, the solvent water has a degree of mineralization of 20000mg/L or less, a pH value between 7 and 9, or both of them.
Further, in the blocking remover, the solvent water is produced reinjection water of an oil production plant.
Further, in the blocking remover, the asphalt-degrading biological enzyme comprises at least one of Apollo biological enzyme, SUN-Y100 biological enzyme and SUN-Y600 biological enzyme and at least one of SUN-Y500 biological enzyme and APP biological enzyme; preferably, the asphalt-degrading bio-enzyme comprises Apollo bio-enzyme, APP bio-enzyme and SUN-Y600 bio-enzyme; further preferably, the apollo bioenzyme is 30 to 40 parts by weight, the APP bioenzyme is 20 to 30 parts by weight, and the SUN-Y600 bioenzyme is 30 to 50 parts by weight, based on 100 parts by weight of the total weight of the asphalt degrading bioenzyme.
Further, in the above-mentioned blocking remover, the amphoteric emulsifier comprises at least one of dioctylmethylamine oxide, eicosylpolyoxyethylene amine oxide and polyoxyethylene chain-containing betaine, and at least one of sodium dodecylaminopropionate, α -long chain alkylbetaine and 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazoline; preferably, the amphoteric emulsifier comprises eicosylpolyoxyethylene amine oxide, sodium dodecylaminopropionate and 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazoline; further preferably, the amphoteric emulsifier comprises 20 to 30 parts by weight of eicosylpolyoxyethylene amine oxide, 30 to 40 parts by weight of sodium dodecylaminopropionate, and 30 to 50 parts by weight of 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazoline, based on 100 parts by weight of the total weight of the amphoteric emulsifier.
Further, in the above-mentioned blocking remover, the oil-soluble dispersant comprises polyoxyethylene nonylphenol ether, at least one of N, N-didodecyl chitosan and ethylene oxide polyether, and at least one of naphthyl benzoate, sodium alkoxyborate and glycerol borate oleate; preferably, the oil-soluble dispersant comprises N, N-didodecyl chitosan, sodium alkoxyborate, and glyceryl borate oleate; further preferably, the oil-soluble dispersant comprises 30 to 50 parts by weight of N, N-didodecyl chitosan, 10 to 20 parts by weight of sodium alkoxyborate, and 40 to 60 parts by weight of glyceryl borate oleate, based on the total weight of 100 parts by weight of the oil-soluble dispersant.
Further, in the above-mentioned blocking remover, the deposition preventive agent comprises at least one of tetralin, trioctyl citrate and lauroyl diethylamine, and at least one of 2-pyrrolidone, limonene, tricresyl phosphate and dodecafluoroheptyl caproate; preferably, the deposit inhibitor comprises tetralin, limonene, and trioctyl citrate; further preferably, the deposition anticoagulant comprises 10 to 30 parts by weight of tetralin, 30 to 50 parts by weight of limonene, and 20 to 60 parts by weight of trioctyl citrate, based on 100 parts by weight of the total weight of the deposition anticoagulant.
Further, in the above-mentioned deblocking agent, the deblocking agent further contains 0.006 parts by weight to 0.02 parts by weight of a stabilizer.
Further, in the blocking remover, the stabilizer comprises at least one of sodium gluconate, dimethyl ketoxime and polyvinyl alcohol, and at least one of cyclodextrin, potassium naphthenate and ammonium thiosulfate; preferably, the stabilizer comprises dimethyl ketoxime, potassium naphthenate and ammonium thiosulfate; further preferably, the stabilizer comprises 20 to 40 parts by weight of dimethylketoxime, 10 to 40 parts by weight of potassium naphthenate and 40 to 70 parts by weight of ammonium thiosulfate, based on 100 parts by weight of the total weight of the stabilizer.
Further, the blocking remover comprises: 0.8 to 1.2 parts by weight of an asphalt-degrading bio-enzyme; 5 to 10 parts by weight of an amphoteric emulsifier; 6 to 15 parts by weight of an oil-soluble dispersant; 5 to 10 parts by weight of a sedimentation anticoagulant; and 10 to 30 parts by weight of solvent water.
According to another aspect of the invention, a preparation method of the blocking remover is provided, which comprises the step of mixing materials comprising asphalt degradation biological enzyme, amphoteric emulsifier, oil-soluble dispersant, deposition anticoagulant and solvent water to form the blocking remover.
Further, in the above method, the preparation method comprises the steps of: s1, mixing asphalt degradation biological enzyme with solvent water to obtain a dispersive base solution; s2, mixing an amphoteric emulsifier, an oil-soluble dispersant and a deposition anticoagulant to obtain an emulsified base solution; and S3, mixing the dispersible base solution and the emulsifiable base solution to obtain the blocking remover.
Further, in the above method, the step S3 further comprises stirring the mixture of the dispersing base and the emulsifying base at a constant temperature of 30 to 100 ℃ and a stirring rate of 500 to 800r/min for 0.5 to 2 hours.
Further, in the above method, the step S1 further comprises mixing a stabilizer together with the asphalt-degrading bio-enzyme solution with the solvent water to obtain the dispersing base solution.
Under the condition of using the preparation method of the blocking remover, the problems in the prior art are overcome, the rapid and efficient blocking removing effect on a wide range of asphalt concretions is realized, and the good and stable blocking removing effect can be realized in a larger temperature range.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail with reference to examples.
As can be understood from the background art, the blocking remover in the prior art has the defects of strong selectivity, poor stability, slow dissolution rate, long dissolution period and large temperature dependence in the using process. In view of the above-described technical problems, in an exemplary embodiment of the present application, there is provided a deblocking agent comprising: 0.4 to 1.4 parts by weight of an asphalt-degrading bio-enzyme; 1 to 10 parts by weight of an amphoteric emulsifier; 5 to 15 parts by weight of an oil-soluble dispersant; 1 to 10 parts by weight of a deposition anticoagulant; and 10 to 30 parts by weight of solvent water.
Different from the blocking remover in the prior art, the blocking remover simultaneously comprises the characteristics of a chemical blocking remover and a biological blocking remover. Due to the fact that the blocking remover contains the amphoteric emulsifier and the oil-soluble dispersant, after the blocking remover is added into pipelines of heavy oil and heavy oil recovery processes, all asphalt concretions blocked at the pipelines, well heads and other positions can be effectively dissolved. Thereby solving the problem that the blocking remover in the prior art can only remove the blocking aiming at specific substances. In addition, the peculiar component asphalt degradation biological enzyme of the biological blocking remover is added into the blocking remover, and under the action of the biological enzyme, the blocking remover can rapidly decompose asphalt coagulates deposited at positions such as a pipeline and a wellhead, so that the rate of the blocking removal operation is accelerated, and the time period is shortened. The utility model provides a blocking remover has the effect of chemical blocking remover and biological blocking remover simultaneously to can exert better effect at the blocking removal in-process of the pitch coagulation thing of complicated component, this under the temperature of difference, the blocking remover homoenergetic of this application can exert good effect. In conclusion, under the condition of using the blocking remover, the problems in the prior art are overcome, the rapid and efficient blocking removing effect on a wide range of asphalt concretes is realized, and the good and stable blocking removing effect can be realized in a larger temperature range.
In some embodiments herein, the weight ratio of the asphalt-degrading bio-enzyme to the oil-soluble dispersant in the deblocking agent of the present application is in the range of 4.5 to 28; preferably, the weight ratio of the asphalt-degrading bio-enzyme to the oil-soluble dispersant is in the range of 13.3. Within the above ratio ranges, the asphalt composition of the present application can better combine the characteristics of the biological and chemical deblocking agents to more effectively achieve an angular effect over a wider temperature range.
In some embodiments herein, the solvent water used in the deblocking agent of the present application has a degree of mineralization of 20000mg/L or less, a pH between 7 and 9, or both. The level of mineralization and pH used in the present application of the deblocking agent is the same as the water used in the oil recovery process, and therefore does not adversely affect subsequent oil recovery. Meanwhile, under the mineralization level and the pH level, the solvent water does not cause unnecessary corrosion to process facilities such as pipelines and the like.
In some embodiments of the present application, the solvent water used in the unblocking agent of the present application is a produced reinjection water of an oil production plant. Because in the process of oil exploitation, a large amount of water is used as the extraction reinjection water to be backfilled in a mine. In some embodiments of the present application, the solvent water used in the blocking remover of the present application is recovery water, so that the cost in the oil extraction process can be reduced.
In further embodiments of the present application, the asphalt-degrading bio-enzyme of the present application may comprise at least one of Apollo bio-enzyme, SUN-Y100 bio-enzyme and SUN-Y600 bio-enzyme and at least one of SUN-Y500 bio-enzyme, APP bio-enzyme. In one embodiment, the asphalt-degrading bio-enzyme may comprise Apollo bio-enzyme, SUN-Y100 bio-enzyme, and SUN-Y500 bio-enzyme. In another embodiment, the asphalt-degrading bio-enzyme may comprise Apollo bio-enzyme, SUN-Y500 bio-enzyme, APP bio-enzyme. In yet another embodiment, the asphalt-degrading bio-enzyme comprises Apollo bio-enzyme, APP bio-enzyme, and SUN-Y600 bio-enzyme. In a preferred embodiment, the apollonian bio-enzyme is 30 to 40 parts by weight, the APP bio-enzyme is 20 to 30 parts by weight, and the SUN-Y600 bio-enzyme is 30 to 50 parts by weight, based on 100 parts by weight of the total weight of the asphalt-degrading bio-enzyme.
In a further embodiment herein, the amphoteric emulsifier herein comprises at least one of dioctylmethylamine oxide, eicosylpolyoxyethylamine oxide, and polyoxyethylene chain betaine and at least one of sodium dodecylaminopropionate, alpha-long chain alkylbetaines, and 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazoline. In the case of using the amphoteric emulsifier, the blocking remover can form a more stable oil-in-water solution, and enables the asphalt degradation biological enzyme and the oil-soluble dispersing agent to be well blended to form a uniform solution. In one embodiment, the amphoteric emulsifier comprises dioctylmethylamine oxide and sodium dodecylaminopropionate. In another embodiment, the amphoteric emulsifier comprises an eicosylpolyoxyethylene amine oxide, a polyoxyethylene chain betaine, and an alpha-long chain alkyl betaine. In yet another embodiment, the amphoteric emulsifier comprises eicosylpolyoxyethylene amine oxide, sodium dodecylaminopropionate, and 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazoline. Preferably, the amphoteric emulsifier comprises 20 to 30 parts by weight of eicosylpolyoxyethylene amine oxide, 30 to 40 parts by weight of sodium dodecylaminopropionate, and 30 to 50 parts by weight of 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazoline, based on 100 parts by weight of the total weight of the amphoteric emulsifier.
In a further embodiment herein, the oil soluble dispersant of the present application comprises polyoxyethylene nonylphenol ether, at least one of N, N-didodecyl chitosan and ethylene oxide polyether, and at least one of naphthalene benzoate, sodium alkoxy borate, and glycerol borate oleate. In the case of using the above oil-soluble dispersant, the blocking remover of the present application can effectively and rapidly dissolve the asphalt coagulate at high temperature, and since two or more oil-soluble dispersants are simultaneously contained, it also has a more desirable dissolving effect for asphalt coagulates in which various substances are mixed. In one embodiment, the oil-soluble dispersant comprises N, N-didodecyl chitosan, an ethylene oxide polyether, and a naphthalene benzoate. In another embodiment, the oil soluble dispersant comprises polyoxyethylene nonylphenol ether, ethylene oxide polyether, and glyceryl borate oleate. In yet another embodiment, the oil-soluble dispersant comprises N, N-didodecyl chitosan, sodium alkoxyborate, and glyceryl borate oleate. Preferably, the oil-soluble dispersant comprises 30 to 50 parts by weight of N, N-didodecyl chitosan, 10 to 20 parts by weight of sodium alkoxyborate, and 40 to 60 parts by weight of glyceryl borate oleate, based on 100 parts by weight of the total weight of the oil-soluble dispersant.
In a further embodiment herein, the deposition anticoagulant comprises tetralin, trioctyl citrate, or lauroyl diethylamine and at least one of 2-pyrrolidone, limonene, tricresyl phosphate, or dodecafluoroheptyl hexanoate. In the case of using the above-described deposit anticoagulant, the oil-soluble dispersed phase of the present application can be more effectively dissolved therein, and the deposit anticoagulant can first soften or dissolve part of the coagulum upon contact of the asphalt coagulum and allow the oil-soluble dispersed phase to meet more coagulum, thereby more effectively unblocking the asphalt coagulum. In one embodiment, the deposit inhibitor comprises tetralin, trioctyl citrate, and tricresyl phosphate. In another embodiment, the deposition anticaking agent comprises trioctyl citrate, tricresyl phosphate, and dodecafluoroheptyl hexanoate. In yet another embodiment, the deposit inhibitor comprises tetralin, limonene, and trioctyl citrate. Preferably, the deposition anticoagulant comprises 10 to 30 parts by weight of tetralin, 30 to 50 parts by weight of limonene, and 20 to 60 parts by weight of trioctyl citrate, based on 100 parts by weight of the total weight of the deposition anticoagulant.
In a further embodiment herein, the deblocking agent of the present application further comprises 0.006 parts by weight to 0.02 parts by weight of a stabilizer. The water phase and the oil phase in the stabilizer can better form water-oil balance when the stabilizer is added, and the plugging agent cannot cause the reduction of plugging removal efficiency due to the separation of the water phase and the oil phase at high temperature, such as 100 ℃, due to the addition of the stabilizer.
In a further embodiment herein, the stabilizer herein comprises at least one of sodium gluconate, dimethylketoxime, or polyvinyl alcohol and at least one of cyclodextrin, potassium naphthenate, or ammonium thiosulfate. In the case of using the above-mentioned stabilizer, the blocking remover of the present application can effectively form a stable water-oil equilibrium phase, and make the asphalt-degrading bio-enzyme contained in the water phase and the oil-soluble dispersant in the oil phase uniformly contact with the asphalt coagulate, thereby rapidly achieving the blocking removal effect. In one embodiment, the stabilizing agent comprises sodium gluconate, dimethylketoxime, and cyclodextrin. In another embodiment, the stabilizer comprises dimethyl ketoxime, polyvinyl alcohol, and ammonium thiosulfate. In yet another embodiment, the stabilizer comprises dimethyl ketoxime, potassium naphthenate, and ammonium thiosulfate. Preferably, the stabilizer comprises 20 to 40 parts by weight of the dimethylketoxime, 10 to 40 parts by weight of the potassium naphthenate and 40 to 70 parts by weight of the ammonium thiosulfate, based on 100 parts by weight of the total weight of the stabilizer.
In a preferred embodiment of the present application, the deblocking agent disclosed herein comprises 0.8 to 1.2 parts by weight of an asphalt-degrading bio-enzyme; 5 to 10 parts by weight of an amphoteric emulsifier; 6 to 15 parts by weight of an oil-soluble dispersant; 5 to 10 parts by weight of a sedimentation anticoagulant; and 10 to 30 parts by weight of solvent water. In this embodiment, a good deblocking effect can be achieved under temperature conditions where a deblocking agent is used to achieve a 96% to 99% dissolution rate and has been more severe in a shorter time.
In another exemplary embodiment of the present application, a method for preparing a blocking remover is provided, which comprises mixing an asphalt-degrading bio-enzyme, an amphoteric emulsifier, an oil-soluble dispersant, a sedimentation anticoagulant, and a solvent water to form the blocking remover. The components for forming the blocking remover are mixed to form the blocking remover, and the preparation method is simple.
In a further embodiment, the method of preparing the deblocking agent comprises the steps of: s1, mixing asphalt degradation biological enzyme with water to obtain a dispersive base solution; s2, uniformly stirring the amphoteric emulsifier, the oil-soluble dispersant and the deposition anticoagulant to obtain an emulsified base solution; and S3, mixing the dispersible base solution and the emulsifiable base solution to obtain the blocking remover. In the method of using the present application, an aqueous dispersing base fluid containing an asphalt-degrading biological enzyme and an oily emulsifying base fluid containing an amphoteric emulsifier and an oil-soluble dispersant are separately prepared, and then the dispersing base fluid and the emulsifying base fluid are mixed.
Since the dispersible base solution and the emulsifiable base solution are prepared separately, the asphalt-degrading bio-enzyme, the amphoteric emulsifier and the oil-soluble dispersant can be effectively dispersed in the corresponding water phase and oil phase first. After mixing the dispersible base and the emulsifiable base with each other, the oil phase and the aqueous phase solution can thus form a good dispersion-type deblocking agent in the form of oil-in-water. The blocking remover prepared by the method has good dispersibility, so that good contact of asphalt degradation biological enzyme, amphoteric emulsifier and oil-soluble dispersant with asphalt concretes can be ensured in actual use, and rapid and efficient blocking removal effect is realized.
In a preferred embodiment, the step S3 further comprises stirring the mixture of the dispersing base and the emulsifying base at a constant temperature of 30 to 100 ℃ for 0.5 to 2 hours at a stirring rate of 500 to 800 r/min. At the above temperature ranges, stirring rates and stirring times, the methods of the present application can result in more uniform dispersion of the aqueous and oil phases in the product deblocking agent. When the blocking remover prepared by the method is used, the oil-soluble dispersing agent in the oil phase of the blocking remover and the asphalt degradation biological enzyme in the water phase can be simultaneously contacted with the asphalt concretion, so that blocking removal is simultaneously carried out, and the blocking removal efficiency is greatly accelerated.
In a further embodiment of the present application, the method of the present application further comprises mixing a stabilizer with the asphalt-degrading bio-enzyme solution together with water in step S1 to obtain a dispersible base fluid. When the stabilizer is added, the water phase and the oil phase in the stabilizer can better form water-oil balance, and the plugging remover cannot cause the reduction of plugging removal efficiency due to the separation of the water phase and the oil phase at high temperature, such as 100 ℃, due to the addition of the stabilizer.
The present application is described in further detail below with reference to specific examples, which should not be construed as limiting the scope of the invention as claimed.
Preparation of blocking remover
Example 1
0.24g of Apollo bio-enzyme, 0.16g of APP bio-enzyme and 0.4g of SUN-Y600 bio-enzyme were mixed together with 10g of solvent water to prepare an asphalt-degrading bio-enzyme solution. Then 0.0012g of dimethyl ketoxime, 0.0006g of potassium naphthenate and 0.0042g of ammonium thiosulfate are dissolved into the asphalt degradation biological enzyme solution together, and are uniformly mixed to obtain a dispersion base solution, wherein the pH value of the solvent water is 7, and the degree of mineralization of the solvent water is 20000mg/L.
20g of eicosylpolyoxyethylene amine oxide, 30g of sodium dodecylaminopropionate and 50g of 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazoline were mixed to prepare an amphoteric emulsifier. 30g of N, N-didodecyl chitosan, 10g of sodium alkoxyborate and 60g of glyceryl borate oleate were mixed to prepare an oil-soluble dispersant. 10g of tetralin, 30g of limonene and 60g of trioctyl citrate were mixed to prepare a deposition retarder. An emulsifying base liquid was prepared by mixing 5g of an amphoteric emulsifier, 6g of an oil-soluble dispersant and 5g of a sedimentation retarder.
And mixing the obtained dispersible base solution and the emulsifying base solution, and stirring at the temperature of 30 ℃ for 0.5 hour at the stirring speed of 500r/min to obtain the blocking remover.
Example 2
0.4725g Apollo bio-enzyme, 0.3375g APP bio-enzyme and 0.54g SUN-Y600 bio-enzyme were mixed together with 15g solvent water to prepare an asphalt degrading bio-enzyme solution. Then 0.0036g of dimethyl ketoxime, 0.0024g of potassium naphthenate and 0.006g of ammonium thiosulfate are dissolved into the asphalt degradation biological enzyme solution together, and the mixture is uniformly mixed to obtain a dispersion base solution, wherein the pH value of the solvent water is 8 and the mineralization degree of the solvent water is 10000mg/L,
25g of eicosylpolyoxyethylene amine oxide, 35g of sodium dodecylaminopropionate and 40g of 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazoline were mixed to prepare an amphoteric emulsifier. 40g of N, N-didodecyl chitosan, 15g of sodium alkoxyborate and 45g of glyceryl borate oleate were mixed to prepare an oil-soluble dispersant. 20g of tetralin, 40g of limonene and 40g of trioctyl citrate were mixed to prepare a deposit inhibitor. An emulsifying base liquid was prepared by mixing 8g of an amphoteric emulsifier, 10g of an oil-soluble dispersant and 8g of a sedimentation retarder.
And mixing the obtained dispersible base solution and the emulsifying base solution, and stirring at the temperature of 50 ℃ for 0.5 hour at the stirring speed of 500r/min to obtain the blocking remover.
Example 3
0.8g of Apollo bio-enzyme, 0.6g of APP bio-enzyme and 0.6g of SUN-Y600 bio-enzyme were mixed together with 20g of solvent water to prepare an asphalt-degrading bio-enzyme solution. Then 0.004g of dimethyl ketoxime, 0.008g of potassium naphthenate and 0.008g of ammonium thiosulfate are dissolved into the asphalt degradation biological enzyme solution together, and are uniformly mixed to obtain a dispersible base solution, wherein the pH value of the solvent water is 9, and the mineralization degree of the solvent water is 15000mg/L.
30g of eicosylpolyoxyethylene amine oxide, 40g of sodium dodecylaminopropionate and 30g of 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazoline were mixed to prepare an amphoteric emulsifier. 50g of N, N-didodecyl chitosan, 20g of sodium alkoxyborate and 45g of glyceryl borate oleate were mixed to prepare an oil-soluble dispersant. 30g of tetralin, 50g of limonene and 20g of trioctyl citrate were mixed to prepare a deposit inhibitor. 10g of an amphoteric emulsifier, 15g of an oil-soluble dispersant and 10g of a sedimentation retarder were mixed to prepare an emulsifiable base solution.
And mixing the obtained dispersible base solution and the emulsifying base solution, and stirring at the temperature of 100 ℃ for 0.5 hour at the stirring speed of 600r/min to obtain the blocking remover.
Example 4
0.42g of Apollo bio-enzyme, 0.28g of SUN-Y100 bio-enzyme and 0.7g of SUN-Y500 bio-enzyme were mixed together with 20g of solvent water to prepare an asphalt-degrading bio-enzyme solution. Then 0.0024g of sodium gluconate, 0.0012g of dimethylketoxime and 0.0084g of cyclodextrin are dissolved into the asphalt degradation biological enzyme solution together, and the mixture is uniformly mixed to obtain a dispersive base solution, wherein the pH value of the solvent water is 7 and the mineralization degree of the solvent water is 5000mg/L.
50g of dioctylmethylamine oxide and 50g of sodium dodecylaminopropionate were mixed to prepare an amphoteric emulsifier. 30g of N, N-didodecyl chitosan, 10g of ethylene oxide polyether and 60g of naphthyl benzoate were mixed to prepare an oil-soluble dispersant. 10g of tetralin, 30g of trioctyl citrate and 60g of tricresyl phosphate were mixed to prepare a deposit inhibitor. 10g of an amphoteric emulsifier, 5g of an oil-soluble dispersant and 1g of a sedimentation retarder were mixed to prepare an emulsifiable base solution.
And mixing the obtained dispersible base solution and the emulsifying base solution, and stirring at the temperature of 100 ℃ for 1 hour at the stirring speed of 600r/min to obtain the blocking remover.
Example 5
0.462g Apollo bioenzyme, 0.33g SUN-Y500 bioenzyme and 0.528g APP bioenzyme were mixed together with 22g solvent water to prepare an asphalt degrading bioenzyme solution. Then 0.0018g of dimethyl ketoxime, 0.0012g of polyvinyl alcohol and 0.003g of ammonium thiosulfate are dissolved into the asphalt degradation biological enzyme solution together, and are uniformly mixed to obtain a dispersion base solution, wherein the pH value of the solvent water is 8, and the degree of mineralization of the solvent water is 3000mg/L.
25g of eicosylpolyoxyethylene amine oxide, 35g of polyoxyethylene chain-containing betaine and 40g of alpha-long chain alkyl betaine were mixed to prepare an amphoteric emulsifier. 40g of polyoxyethylene nonylphenol ether, 15g of ethylene oxide polyether and 45g of glyceryl borate oleate were mixed to prepare an oil-soluble dispersant. 20g of trioctyl citrate, 40g of tricresyl phosphate and 40g of dodecafluoroheptyl hexanoate were mixed to prepare a deposition preventive agent. An emulsifying base liquid was prepared by mixing 7g of an amphoteric emulsifier, 7g of an oil-soluble dispersant and 3g of a sedimentation retarder.
And mixing the obtained dispersible base solution and the emulsifying base solution, and stirring at the temperature of 30 ℃ for 1 hour at the stirring speed of 700r/min to obtain the blocking remover.
Example 6
0.5g Apollo bio-enzyme, 0.375g APP bio-enzyme and 0.375g SUN-Y600 bio-enzyme were mixed together with 25g solvent water to prepare an asphalt degrading bio-enzyme solution. Then 0.002g of dimethyl ketoxime, 0.004g of potassium naphthenate and 0.004g of ammonium thiosulfate are dissolved into the asphalt degradation biological enzyme solution together, and are mixed uniformly to obtain the dispersible base solution, wherein the pH value of the solvent water is 9, and the mineralization degree of the solvent water is 18000mg/L.
30g of eicosylpolyoxyethylene amine oxide, 40g of sodium dodecylaminopropionate and 30g of 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazoline were mixed to prepare an amphoteric emulsifier. 50g of N, N-didodecyl chitosan, 20g of sodium alkoxyborate and 45g of glyceryl borate oleate were mixed to prepare an oil-soluble dispersant. 30g of tetralin, 50g of limonene and 20g of trioctyl citrate were mixed to prepare a deposit inhibitor. An emulsifying base liquid was prepared by mixing 3g of an amphoteric emulsifier, 5g of an oil-soluble dispersant and 7g of a sedimentation retarder.
And mixing the obtained dispersible base solution and the emulsifying base solution, and stirring for 1.5 hours at the temperature of 40 ℃, wherein the stirring speed is 600r/min, thereby obtaining the blocking remover.
Example 7
0.36g of Apollo bio-enzyme, 0.24g of APP bio-enzyme and 0.6g of SUN-Y600 bio-enzyme were mixed together with 30g of solvent water to prepare an asphalt degrading bio-enzyme solution. Then 0.0012g of dimethyl ketoxime, 0.0006g of potassium naphthenate and 0.0042g of ammonium thiosulfate are dissolved into the asphalt degradation biological enzyme solution together, and are mixed uniformly to obtain a dispersion base solution, wherein the pH value of the solvent water is 7, and the mineralization degree of the solvent water is 12000mg/L.
20g of eicosylpolyoxyethylene amine oxide, 30g of sodium dodecylaminopropionate and 50g of 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazoline were mixed to prepare an amphoteric emulsifier. 30g of N, N-didodecyl chitosan, 10g of sodium alkoxyborate and 60g of glyceryl borate oleate were mixed to prepare an oil-soluble dispersant. 10g of tetralin, 30g of limonene and 60g of trioctyl citrate were mixed to prepare a deposit inhibitor. An emulsifying base liquid was prepared by mixing 1g of an amphoteric emulsifier, 15g of an oil-soluble dispersant and 10g of a sedimentation retarder.
And mixing the obtained dispersible base solution and the emulsifying base solution, and stirring at the temperature of 60 ℃ for 1.5 hours at the stirring speed of 800r/min to obtain the blocking remover.
Example 8
0.12g of Apollo bioenzyme, 0.08g of APP bioenzyme and 0.2g of SUN-Y600 bioenzyme were mixed together with 10g of solvent water to prepare an asphalt degrading bioenzyme solution. The prepared asphalt degradation biological enzyme solution is used as a dispersive base solution, wherein the pH value of solvent water is 7, and the mineralization degree of the solvent water is 20000mg/L.
20g of eicosylpolyoxyethylene amine oxide, 30g of sodium dodecylaminopropionate and 50g of 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazoline were mixed to prepare an amphoteric emulsifier. 30g of N, N-didodecyl chitosan, 10g of sodium alkoxyborate and 60g of glyceryl borate oleate were mixed to prepare an oil-soluble dispersant. 10g of tetralin, 30g of limonene and 60g of trioctyl citrate were mixed to prepare a deposit inhibitor. An emulsifying base liquid was prepared by mixing 5g of an amphoteric emulsifier, 5g of an oil-soluble dispersant and 5g of a sedimentation retarder.
And mixing the obtained dispersible base solution and the emulsifying base solution, and stirring for 2 hours at the temperature of 30 ℃, wherein the stirring speed is 600r/min, so that the blocking remover is obtained.
Example 9
0.1575g of Apollo bio-enzyme, 0.1125g of APP bio-enzyme and 0.18g of SUN-Y600 bio-enzyme were mixed together with 15g of solvent water to prepare an asphalt-degrading bio-enzyme solution. The prepared asphalt degradation biological enzyme solution is used as a dispersive base solution, wherein the pH value of solvent water is 8, and the mineralization degree of the solvent water is 10000mg/L.
25g of eicosylpolyoxyethylene amine oxide, 35g of sodium dodecylaminopropionate and 40g of 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazoline were mixed to prepare an amphoteric emulsifier. 40g of N, N-didodecyl chitosan, 15g of sodium alkoxyborate and 45g of glyceryl borate oleate were mixed to prepare an oil-soluble dispersant. 20g of tetralin, 40g of limonene and 40g of trioctyl citrate were mixed to prepare a deposit inhibitor. An emulsifying base liquid was prepared by mixing 8g of an amphoteric emulsifier, 10g of an oil-soluble dispersant and 8g of a sedimentation retarder.
And mixing the obtained dispersible base solution and the emulsifying base solution, and stirring at the temperature of 50 ℃ for 2 hours at the stirring speed of 800r/min to obtain the blocking remover.
Example 10
0.24g of Apollo bio-enzyme, 0.18g of APP bio-enzyme and 0.18g of SUN-Y600 bio-enzyme were mixed together with 30g of solvent water to prepare an asphalt degrading bio-enzyme solution. The prepared asphalt degradation biological enzyme solution is used as a dispersive base solution, wherein the pH value of solvent water is 9, and the mineralization degree of the solvent water is 15000mg/L.
30g of eicosylpolyoxyethylene amine oxide, 40g of sodium dodecylaminopropionate and 30g of 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazoline were mixed to prepare an amphoteric emulsifier. 50g of N, N-didodecyl chitosan, 20g of sodium alkoxyborate and 45g of glyceryl borate oleate were mixed to prepare an oil-soluble dispersant. 30g of tetralin, 50g of limonene and 20g of trioctyl citrate were mixed to prepare a deposit inhibitor. 10g of an amphoteric emulsifier, 4g of an oil-soluble dispersant and 10g of a sedimentation retarder were mixed to prepare an emulsifiable base solution.
And mixing the obtained dispersible base solution and the emulsifying base solution, and stirring at the temperature of 50 ℃ for 2 hours at the stirring speed of 700r/min to obtain the blocking remover.
The amounts of the respective components in the above examples 1 to 10 are shown in the following table 1.
TABLE 1
Comparative example 1
0.06g of Apollo bio-enzyme, 0.04g of APP bio-enzyme and 0.1g of SUN-Y600 bio-enzyme were mixed together with 10g of solvent water to prepare an asphalt-degrading bio-enzyme solution. Then 0.0012g of dimethyl ketoxime, 0.0006g of potassium naphthenate and 0.0042g of ammonium thiosulfate are dissolved into the asphalt degradation biological enzyme solution together, and are uniformly mixed to obtain a dispersion base solution, wherein the pH value of the solvent water is 7, and the degree of mineralization of the solvent water is 20000mg/L.
20g of eicosylpolyoxyethylene amine oxide, 30g of sodium dodecylaminopropionate and 50g of 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazoline were mixed to prepare an amphoteric emulsifier. 30g of N, N-didodecyl chitosan, 10g of sodium alkoxyborate and 60g of glyceryl borate oleate were mixed to prepare an oil-soluble dispersant. 10g of tetralin, 30g of limonene and 60g of trioctyl citrate were mixed to prepare a deposit inhibitor. An emulsifying base fluid was prepared by mixing 5g of an amphoteric emulsifier, 6g of an oil-soluble dispersant and 5g of a sedimentation retarder.
And mixing the obtained dispersible base solution and the emulsifying base solution, and stirring for 4 hours at the temperature of 30 ℃, wherein the stirring speed is 500r/min, so that the blocking remover is obtained.
Comparative example 2
0.525g of Apollo bio-enzyme, 0.375g of APP bio-enzyme and 0.6g of SUN-Y600 bio-enzyme were mixed together with 15g of solvent water to prepare an asphalt degrading bio-enzyme solution. Then 0.0036g of dimethylketoxime, 0.0024g of potassium naphthenate and 0.006g of ammonium thiosulfate are dissolved into the asphalt degradation biological enzyme solution together, and the mixture is uniformly mixed to obtain a dispersion base solution, wherein the pH value of the solvent water is 8, and the mineralization degree of the solvent water is 10000mg/L,
20g of eicosylpolyoxyethylene amine oxide, 30g of sodium dodecylaminopropionate and 50g of 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazoline were mixed to prepare an amphoteric emulsifier. 30g of N, N-didodecyl chitosan, 10g of sodium alkoxyborate and 60g of glyceryl borate oleate were mixed to prepare an oil-soluble dispersant. 10g of tetralin, 30g of limonene and 60g of trioctyl citrate were mixed to prepare a deposit inhibitor. An emulsifying base liquid was prepared by mixing 5g of an amphoteric emulsifier, 6g of an oil-soluble dispersant and 5g of a sedimentation retarder.
And mixing the obtained dispersible base solution and the emulsifying base solution, and stirring for 4 hours at the temperature of 50 ℃, wherein the stirring speed is 500r/min, so that the blocking remover is obtained.
Comparative example 3
0.8g of Apollo bio-enzyme, 0.6g of APP bio-enzyme and 0.6g of SUN-Y600 bio-enzyme were mixed together with 20g of solvent water to prepare an asphalt-degrading bio-enzyme solution. Then 0.004g of dimethyl ketoxime, 0.008g of potassium naphthenate and 0.008g of ammonium thiosulfate are dissolved into the asphalt degradation biological enzyme solution together, and are uniformly mixed to obtain a dispersible base solution, wherein the pH value of the solvent water is 9, and the mineralization degree of the solvent water is 15000mg/L.
20g of eicosylpolyoxyethylene amine oxide, 30g of sodium dodecylaminopropionate and 50g of 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazoline were mixed to prepare an amphoteric emulsifier. 30g of N, N-didodecyl chitosan, 10g of sodium alkoxyborate and 60g of glyceryl borate oleate were mixed to prepare an oil-soluble dispersant. 10g of tetralin, 30g of limonene and 60g of trioctyl citrate were mixed to prepare a deposit inhibitor. An emulsifying base solution was prepared by mixing 5g of an amphoteric emulsifier, 1g of an oil-soluble dispersant and 5g of a sedimentation retarder.
And mixing the obtained dispersible base solution and the emulsifying base solution, and stirring for 4 hours at the temperature of 30 ℃, wherein the stirring speed is 600r/min, so that the blocking remover is obtained.
Comparative example 4
0.42g of Apollo bio-enzyme, 0.28g of SUN-Y100 bio-enzyme and 0.7g of SUN-Y500 bio-enzyme were mixed together with 20g of solvent water to prepare an asphalt-degrading bio-enzyme solution. And then 0.0024g of sodium gluconate, 0.0012g of dimethylketoxime and 0.0084g of cyclodextrin are dissolved into the asphalt degradation biological enzyme solution together, and the mixture is uniformly mixed to obtain a dispersible base solution, wherein the pH value of the solvent water is 7, and the mineralization degree of the solvent water is 5000mg/L.
20g of eicosylpolyoxyethylene amine oxide, 30g of sodium dodecylaminopropionate and 50g of 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazoline were mixed to prepare an amphoteric emulsifier. 30g of N, N-didodecyl chitosan, 10g of sodium alkoxyborate and 60g of glyceryl borate oleate were mixed to prepare an oil-soluble dispersant. 10g of tetralin, 30g of limonene and 60g of trioctyl citrate were mixed to prepare a deposit inhibitor. An emulsifying base liquid was prepared by mixing 5g of an amphoteric emulsifier, 20g of an oil-soluble dispersant and 5g of a sedimentation retarder.
And mixing the obtained dispersible base solution and the emulsifying base solution, and stirring for 4 hours at the temperature of 50 ℃, wherein the stirring speed is 600r/min, so that the blocking remover is obtained.
Comparative example 5
Mixing xylene and asphalt condensate according to a mass ratio of 1:2, mixing the solution, stirring the solution at the temperature of 30 ℃ for 10min at the stirring speed of 600r/min, and measuring corresponding indexes.
Performance testing
The same mass of asphalt coagulum was placed into the deblocking agent prepared in examples 1 to 10 and comparative examples 1 to 5 above, wherein the ratio of asphalt coagulum to deblocking agent was 1:2, and observing the dissolution effect of the mixture at different temperatures. Wherein the dissolution rate and the dissolution rate are measured according to the corresponding method of SY/T6300-2009 technical conditions for clear and wax control for oil recovery, and the experimental results of GB/T261-2008 flash point measurement executed in the flash point measurement are shown in the following table 2.
TABLE 2
As can be seen from Table 2, the unblocking agents of examples 1 to 10 all reached an open flash point of 66 ℃ or higher, and had high dissolution efficiency for asphaltene coagulates. Therefore, the blocking remover can effectively dissolve asphalt concretions in high-temperature and high-pressure near-wellbore zones and mineshafts, and can effectively avoid the deflagration phenomenon caused by too low flash point. In addition, after the stabilizer component is added, the stability of the blocking remover is further enhanced, and the blocking remover has excellent temperature resistance. Simultaneously, after adding the deposit anticoagulant, pitch coagulum reduces at pit shaft surface deposit volume for the unblocking agent of this application has the dual function of restraining deposit and prevention coagulum jam. As can be seen from comparison of comparative examples 1-4 with examples, in the case where the asphalt-degrading bio-enzyme and the oil-soluble dispersant used are not within the range of the present application, the solvent time of the deblocking agent is significantly prolonged.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (24)
1. A deblocking agent, comprising:
0.4 to 1.4 parts by weight of a bitumen degrading bio-enzyme comprising at least one of Apollo bio-enzyme, SUN-Y100 bio-enzyme and SUN-Y600 bio-enzyme and at least one of SUN-Y500 bio-enzyme, APP bio-enzyme;
1 to 10 parts by weight of an amphoteric emulsifier;
5 to 15 parts by weight of an oil-soluble dispersant;
1 to 10 parts by weight of a deposition inhibitor comprising at least one of tetralin, trioctyl citrate, and lauroyl diethylamine, and at least one of 2-pyrrolidone, limonene, tricresyl phosphate, and dodecafluoroheptyl hexanoate; and
10 to 30 parts by weight of solvent water.
2. The deblocking agent according to claim 1, wherein the weight ratio of said bitumen degrading biological enzyme to said oil soluble dispersant is in the range of 4.5.
3. The deblocking agent according to claim 2, wherein the weight ratio of said bitumen degrading biological enzyme to said oil soluble dispersant is in the range of 13.3.
4. The deblocking agent according to claim 1, characterized in that said solvent water has a degree of mineralization below 20000mg/L, a pH between 7 and 9 or both.
5. The de-plugging agent according to claim 4, wherein the solvent water is produced reinjection water of an oil production plant.
6. The deblocking agent according to claim 1, wherein said asphalt degrading biological enzymes comprise said Apollo biological enzyme, said APP biological enzyme, and said SUN-Y600 biological enzyme.
7. The deblocking agent according to claim 6, wherein said Apollo bioenzyme is 30 to 40 parts by weight, said APP bioenzyme is 20 to 30 parts by weight, and said SUN-Y600 bioenzyme is 30 to 50 parts by weight, based on 100 parts by weight of the total weight of said asphalt degrading bioenzymes.
8. The deblocking agent according to claim 1, wherein said amphoteric emulsifier comprises at least one of dioctylmethylamine oxide, eicosylpolyoxyethylene amine oxide, and polyoxyethylene chain betaine, and at least one of sodium dodecylaminopropionate, alpha-long chain alkylbetaines, and 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazoline.
9. The deblocking agent according to claim 8, wherein said amphoteric emulsifier comprises eicosylpolyoxyethylene amine oxide, sodium dodecylaminopropionate, and 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazoline.
10. The deblocking agent according to claim 9, wherein said amphoteric emulsifier comprises 20 to 30 parts by weight of eicosylpolyoxyethylene amine oxide, 30 to 40 parts by weight of sodium dodecylaminopropionate, and 30 to 50 parts by weight of 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazoline, based on 100 parts by weight of the total weight of said amphoteric emulsifier.
11. The deblocking agent of claim 1, wherein said oil soluble dispersant comprises polyoxyethylene nonylphenol ether, at least one of N, N-didodecyl chitosan and ethylene oxide polyether, and at least one of naphthalene benzoate, sodium alkoxy borate, and glyceryl borate oleate.
12. The deblocking agent according to claim 11, wherein said oil soluble dispersant comprises N, N-didodecyl chitosan, sodium alkoxyborate, and glyceryl borate oleate.
13. The deblocking agent according to claim 12, wherein said oil-soluble dispersant comprises 30 to 50 parts by weight of N, N-didodecyl chitosan, 10 to 20 parts by weight of sodium alkoxyborate, and 40 to 60 parts by weight of glyceryl borate oleate, based on 100 parts by weight of the total weight of said oil-soluble dispersant.
14. The agent of claim 1, wherein the deposit inhibitor comprises tetralin, limonene, and trioctyl citrate.
15. The deblocking agent according to claim 14, characterized in that said deposition anticoagulant comprises 10 to 30 parts by weight of tetralin, 30 to 50 parts by weight of limonene, and 20 to 60 parts by weight of trioctyl citrate, based on 100 parts by weight of the total weight of said deposition anticoagulant.
16. The deblocking agent of claim 1, wherein said deblocking agent comprises 0.006 parts by weight to 0.02 parts by weight of a stabilizer.
17. The deblocking agent of claim 16, wherein said stabilizer comprises at least one of sodium gluconate, dimethylketoxime, and polyvinyl alcohol, and at least one of cyclodextrin, potassium naphthenate, and ammonium thiosulfate.
18. The deblocking agent of claim 17, wherein said stabilizer comprises dimethyl ketoxime, potassium naphthenate, and ammonium thiosulfate.
19. The deblocking agent according to claim 18, wherein said stabilizer comprises 20 to 40 parts by weight of dimethylketoxime, 10 to 40 parts by weight of potassium naphthenate, and 40 to 70 parts by weight of ammonium thiosulfate, based on 100 parts by weight of the total weight of said stabilizer.
20. The deblocking agent according to claim 1, comprising:
0.8 to 1.2 parts by weight of the asphalt-degrading bio-enzyme;
5 to 10 parts by weight of the amphoteric emulsifier;
6 to 15 parts by weight of the oil-soluble dispersant;
5 to 10 parts by weight of the deposition anticoagulant; and
10 to 30 parts by weight of solvent water.
21. A method of preparing the deblocking agent of any one of claims 1 to 20, comprising mixing materials comprising asphalt degrading biological enzymes, amphoteric emulsifiers, oil soluble dispersants, sedimentation anticoagulants, and solvent water to form said deblocking agent.
22. The method of manufacturing of claim 21, comprising the steps of:
s1, mixing the asphalt degradation biological enzyme with the solvent water to obtain a dispersive base solution;
s2, mixing the amphoteric emulsifier, the oil-soluble dispersant and the deposition anticoagulant to obtain an emulsified base solution;
and S3, mixing the dispersible base solution and the emulsifiable base solution to obtain the blocking remover.
23. The method according to claim 22, wherein the step S3 comprises stirring the mixture of the dispersing base and the emulsifying base at a constant temperature of 30 to 100 ℃ and a stirring rate of 500 to 800r/min for 0.5 to 2 hours.
24. The method according to claim 22, wherein step S1 comprises mixing a stabilizer with the solution of the asphalt-degrading bio-enzyme and the solvent water to obtain the dispersing base fluid.
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| CN115322763B (en) * | 2022-08-30 | 2023-06-27 | 赵文龙 | Biological acidolysis blocking agent, preparation method thereof and application thereof in low-permeability reservoir |
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