CN108517204A - A kind of three-in-one acidification blocking remover and its application process for de-plugging of well - Google Patents
A kind of three-in-one acidification blocking remover and its application process for de-plugging of well Download PDFInfo
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- CN108517204A CN108517204A CN201810319466.6A CN201810319466A CN108517204A CN 108517204 A CN108517204 A CN 108517204A CN 201810319466 A CN201810319466 A CN 201810319466A CN 108517204 A CN108517204 A CN 108517204A
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- China
- Prior art keywords
- acid
- well
- plugging
- blocking remover
- acidification blocking
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- 230000020477 pH reduction Effects 0.000 title claims abstract description 49
- 230000000903 blocking effect Effects 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 7
- 230000008569 process Effects 0.000 title claims abstract description 4
- 239000002253 acid Substances 0.000 claims abstract description 31
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 230000007797 corrosion Effects 0.000 claims abstract description 11
- 238000005260 corrosion Methods 0.000 claims abstract description 11
- 239000010802 sludge Substances 0.000 claims abstract description 7
- 230000001458 anti-acid effect Effects 0.000 claims abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000003112 inhibitor Substances 0.000 claims abstract description 5
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910000040 hydrogen fluoride Inorganic materials 0.000 claims abstract description 4
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- 150000007524 organic acids Chemical class 0.000 claims abstract description 4
- 230000001376 precipitating effect Effects 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims abstract description 3
- 239000002738 chelating agent Substances 0.000 claims abstract 2
- 239000000203 mixture Substances 0.000 claims description 11
- 239000003129 oil well Substances 0.000 claims description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- -1 poly Chemical compound 0.000 claims description 7
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 6
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- 229930016911 cinnamic acid Natural products 0.000 claims description 3
- 235000013985 cinnamic acid Nutrition 0.000 claims description 3
- WBYWAXJHAXSJNI-UHFFFAOYSA-N methyl p-hydroxycinnamate Natural products OC(=O)C=CC1=CC=CC=C1 WBYWAXJHAXSJNI-UHFFFAOYSA-N 0.000 claims description 3
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 claims description 3
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 3
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- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 3
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 2
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- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims 2
- 229960001484 edetic acid Drugs 0.000 claims 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims 2
- 229920000570 polyether Polymers 0.000 claims 2
- FJLUATLTXUNBOT-UHFFFAOYSA-N 1-Hexadecylamine Chemical compound CCCCCCCCCCCCCCCCN FJLUATLTXUNBOT-UHFFFAOYSA-N 0.000 claims 1
- 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 1
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims 1
- ZMYKITJYWFYRFJ-UHFFFAOYSA-N 4-oxo-4-(2-phenylethylamino)butanoic acid Chemical compound OC(=O)CCC(=O)NCCC1=CC=CC=C1 ZMYKITJYWFYRFJ-UHFFFAOYSA-N 0.000 claims 1
- HSZQTGSRCFTMKI-UHFFFAOYSA-N C(C)(=O)O.C(C)(=O)O.C(C)(=O)O.C(C)(=O)O.C1(CCCCC1)=NCCN Chemical compound C(C)(=O)O.C(C)(=O)O.C(C)(=O)O.C(C)(=O)O.C1(CCCCC1)=NCCN HSZQTGSRCFTMKI-UHFFFAOYSA-N 0.000 claims 1
- 102100035024 Carboxypeptidase B Human genes 0.000 claims 1
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 claims 1
- 101000946524 Homo sapiens Carboxypeptidase B Proteins 0.000 claims 1
- 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 1
- 101150096185 PAAS gene Proteins 0.000 claims 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 1
- 229920002125 Sokalan® Polymers 0.000 claims 1
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical compound C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 claims 1
- 150000008051 alkyl sulfates Chemical class 0.000 claims 1
- 150000001412 amines Chemical class 0.000 claims 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims 1
- 239000012964 benzotriazole Substances 0.000 claims 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims 1
- 235000019441 ethanol Nutrition 0.000 claims 1
- UYMKPFRHYYNDTL-UHFFFAOYSA-N ethenamine Chemical compound NC=C UYMKPFRHYYNDTL-UHFFFAOYSA-N 0.000 claims 1
- 150000002191 fatty alcohols Chemical class 0.000 claims 1
- 235000019253 formic acid Nutrition 0.000 claims 1
- 229930182478 glucoside Natural products 0.000 claims 1
- 150000008131 glucosides Chemical class 0.000 claims 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims 1
- 239000005011 phenolic resin Substances 0.000 claims 1
- 229920001568 phenolic resin Polymers 0.000 claims 1
- 239000004584 polyacrylic acid Substances 0.000 claims 1
- 108010064470 polyaspartate Proteins 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 claims 1
- 239000010703 silicon Substances 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 239000000176 sodium gluconate Substances 0.000 claims 1
- 229940005574 sodium gluconate Drugs 0.000 claims 1
- 235000012207 sodium gluconate Nutrition 0.000 claims 1
- 239000004094 surface-active agent Substances 0.000 claims 1
- UEUXEKPTXMALOB-UHFFFAOYSA-J tetrasodium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate Chemical group [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O UEUXEKPTXMALOB-UHFFFAOYSA-J 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 13
- 238000000151 deposition Methods 0.000 abstract description 5
- 230000008021 deposition Effects 0.000 abstract description 5
- 238000002347 injection Methods 0.000 abstract description 5
- 239000007924 injection Substances 0.000 abstract description 5
- 238000001556 precipitation Methods 0.000 abstract description 4
- 238000002360 preparation method Methods 0.000 abstract description 3
- 239000012065 filter cake Substances 0.000 abstract description 2
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- 238000010276 construction Methods 0.000 description 16
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- FCEHBMOGCRZNNI-UHFFFAOYSA-N 1-benzothiophene Chemical compound C1=CC=C2SC=CC2=C1 FCEHBMOGCRZNNI-UHFFFAOYSA-N 0.000 description 2
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- AKFRGHYHUILETL-UHFFFAOYSA-N 2-(1,2-dicarboxyethoxy)butanedioic acid;sodium Chemical compound [Na].OC(=O)CC(C(O)=O)OC(C(O)=O)CC(O)=O AKFRGHYHUILETL-UHFFFAOYSA-N 0.000 description 1
- MPPQGYCZBNURDG-UHFFFAOYSA-N 2-propionyl-6-dimethylaminonaphthalene Chemical compound C1=C(N(C)C)C=CC2=CC(C(=O)CC)=CC=C21 MPPQGYCZBNURDG-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
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- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
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- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
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- MSNWSDPPULHLDL-UHFFFAOYSA-K ferric hydroxide Chemical compound [OH-].[OH-].[OH-].[Fe+3] MSNWSDPPULHLDL-UHFFFAOYSA-K 0.000 description 1
- 229910001447 ferric ion Inorganic materials 0.000 description 1
- 229910001448 ferrous ion Inorganic materials 0.000 description 1
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- 238000006703 hydration reaction Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
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- 238000001764 infiltration Methods 0.000 description 1
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- 239000011777 magnesium Substances 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
-
- 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
- C09K8/528—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
-
- 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
-
- 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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/72—Eroding chemicals, e.g. acids
- C09K8/74—Eroding chemicals, e.g. acids combined with additives added for specific purposes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/12—Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/32—Anticorrosion additives
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Geochemistry & Mineralogy (AREA)
- Inorganic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Detergent Compositions (AREA)
Abstract
The present invention relates to a kind of three-in-one acidification blocking removers and its application process for de-plugging of well.Acid formula score by weight includes：18 26% multicomponent organic acid, 15 20% precipitating inhibitor, 5 8% iron chelators, 4 7% expansion-resisting agents, 6 9% corrosion inhibiter, 3 6% hydrogen fluoride, 2 5% demulsifiers, 3 6% anti-acid sludge agent, 3 6% Waterproof lock agent, remaining be clear water, each component is added to according to weight fraction in corrosion-resistant reactor when preparation, stirring at normal temperature 40 50 minutes is to be dissolved uniform.The present invention combines together the major function of preposition sour, main acid and postposition acid in conventional acidulation liquid, the organic depositions such as inorganic scales, the gum asphalts such as slurry filter-cake, the calcareous irony in stratum can effectively be dissolved, and the secondary precipitation of reservoir will not be caused to injure, the present invention can also be used as water injection well in oil fields increasing injection and be used with acidification blocking remover.
Description
Technical field
The present invention relates to a kind of acidification blocking remover for de-plugging of well, more particularly in a kind of liquid by conventional acidulation before
The acidification blocking remover that the major function of acid, main acid and postposition acid combines together is set, and its prepares and applies.
Background technology
Oil well oil layer pollution is the most common production problem that new old filed commonly encounters, direct result caused by oil layer pollution
Oilwell produced fluid amount is set to decline, serious oil well to be caused to stop production, to cause huge economic loss, and oil layer pollution is oil field
In production process inevitably, acidification de-plugging is a kind of domestic and international most common side that is economic and effectively releasing oil layer pollution
Method is developed so far the history of existing last 100 years.The acidification blocking remover that domestic each oil field generally uses at present is by preposition acid, main acid
With postposition acid three slugs composition, when onsite application, needs to be respectively configured, and live injecting program is complicated, is primarily present several lack
Point：1. slug is more, scene is big with liquid intensity, and there are certain risk of environmental pollution；2. Agitation Tank is more, construction site is occupied；③
Long construction period, construction is complicated, and operating expenses is high.
In the case of current international oil price continued downturn, oil field is more and more tighter to the control of measure cost, cost efficiency
As oil field development new normality, therefore develop it is a kind of can merge in conventional acidulation liquid it is preposition acid, main acid and postposition acid
Major function, and the three-in-one acidification blocking remover right and wrong that can effectively reduce site operation difficulty, reduce operating expenses and construction risk
Often it is necessary to.A kind of acidification blocking remover for de-plugging of well have conventional acidulation liquid in it is preposition acid, main acid and postposition acid
Major function can dissolve the organic depositions such as inorganic scales, the gum asphalts such as slurry filter-cake, the calcareous irony in stratum, effectively release oil well
Formation contaminant, and the secondary precipitation of reservoir will not be caused to injure, also have the characteristics that Waterproof lock, do not corrode tubing string, inhibit water-sensitive,
Efficient, quick acidification de-plugging site operation can be realized when use, advantageously reduce risk of environmental pollution and construction cost in construction.
Invention content
The object of the present invention is to provide a kind of three-in-one acidification blocking remover for de-plugging of well and its preparations and application, can use
In oilfield releasing is drilled well mud contamination, organic deposition blocks and inorganic scale blocks, increase oil well output, it can be real when onsite application
Efficient, the quick acidification de-plugging construction of existing oilfield advantageously reduces the risk of environmental pollution in construction and saves construction cost.
In order to achieve the above objectives, the object of the present invention is achieved like this：
A kind of three-in-one acidification blocking remover for de-plugging of well, it is characterised in that including the following component of weight content：
Multicomponent organic acid 18-26%；
Precipitating inhibitor 15-20%；
Iron chelator 5-8%；
Expansion-resisting agent 4-7%；
Corrosion inhibiter 6-9%；
Hydrogen fluoride 3-6%；
Demulsifier 2-5%；
Anti- acid sludge agent 3-6%；
Waterproof lock agent 3-6%；
Remaining is water.
The multicomponent organic acid is weak acid, and carbonic acid dirt and the carbonate being mainly used in corrosion pit shaft and reservoir have slow
Speed and deep penetration effect.
The precipitating inhibitor is weakly acidic, has good complex ion ability, can be with the metals such as calcium, magnesium in residual acid
Ion forms water-soluble metal ion chelate, can inhibit the secondary precipitations such as the calcirm-fluoride generated in acidization, prodan.
Ferric ion in pit shaft and stratum can be reduced into ferrous ion by the iron chelator, and with steady
The performance for determining iron ion can effectively prevent the generation of ferric hydroxide gel in raffinate.
The expansion-resisting agent can prevent hydration swelling and the migration of the clay minerals such as the bentonite in stratum.
The corrosion inhibiter can form absorption protective film in metal surface by oriented attachment, can effectively prevent acid solution to pit shaft
Middle corrosion of metal.
The fluorination Hydrogen Energy is reacted with silicoide in stratum, improves the permeance property on stratum.
The demulsifier can destroy the emulsifying liquid structure that acid solution is formed with crude oil, detach each phase in emulsion, to protect
The dehydration of barrier extraction crude oil is not influenced by acid solution.
The anti-acid sludge agent can be adsorbed on crude oil surface, can prevent acid from forming sludge with certain light hydrocarbon materials in crude oil.
Waterproof lock agent has low surface and interface tension, the capillary resistance that working fluid is generated with reservoir pore space is reduced, to releasing
Water injury plays an important roll, and the water phase generated in acidization can be effectively prevent to injure, and significantly reduces working fluid and returns row pressure power.
A kind of three-in-one acidification blocking remover application method for de-plugging of well, including：
1）According to individual well design quantity, the proportion relation according to claim 1 weighs each component；
2）Each component is added to according to weight fraction in corrosion-resistant reactor, when mixing carries out under room temperature, normal pressure, fully stirs
It mixes 40-50 minutes, each component is made uniformly to mix；
3）The acidification blocking remover made is configured to the aqueous solution of 25-35%, is packed into sour tank, oil well mouth is connected by pipeline, simultaneously
Connect acid filling pump；
4）Acidification blocking remover is injected into pit shaft according to design discharge capacity；
5）According to design quantity injected clear water, the acidification blocking remover in pit shaft is replaced into stratum；
6）Opening well and making production after closing well reacts 3-5 hours.
The most important improvement of the present invention is to provide preposition acid, main acid and the postposition acid in a kind of liquid by conventional acidulation
The acidification blocking remover that combines together of major function, and its prepare and application.Compared with prior art, beneficial effect of the invention
Fruit is：It can be used for oilfield releasing and be drilled well mud contamination, organic deposition blocking and inorganic scale blocking, increase oil well output,
Efficient, the quick acidification de-plugging site operation that oilfield can be realized when use advantageously reduces the environmental pollution wind in construction
Danger and saving construction cost, it is contemplated that ten thousand yuan of single well measure cost reduction 10-15.
The present invention is alternatively arranged as water injection well in oil fields increasing injection and is used with acidification blocking remover.
Description of the drawings
Fig. 1 is the result figure of rock core de-plugging simulating lab test.
Fig. 2 is three-in-one acidification blocking remover construction effect figure.
Specific implementation mode
Embodiment 1：
A kind of three-in-one acidification blocking remover for de-plugging of well, including 250 parts by weight of acetic acid and sulfamic acid mixture（Acetic acid
Mass ratio between sulfamic acid is：3:4）, 150 parts by weight of polyepoxy sodium succinate and Sodium Polyacrylate mixture（Polycyclic
Mass ratio between oxydisuccinic acid sodium and Sodium Polyacrylate is：2:5）, 50 parts by weight of polyquaternium, cinnamic acid and sulfydryl benzo thiophene
80 parts by weight of azoles（Mass ratio between cinnamic acid and mercaptobenzothiazoler is：3:2）, polyoxyethylene polyoxypropylene octadecyl alcolol ether and
30 parts by weight of polyox-yethylene-polyoxypropylene block copolymer（Polyoxyethylene polyoxypropylene octadecyl alcolol ether and polyoxyethylene-polyoxy third
Mass ratio between alkene block copolymer is：1:2）, 50 parts by weight of hydrogen fluoride, 40 parts by weight of fatty acid methyl ester ethoxylate,
60 parts by weight of butyl glycol ether, 290 parts by weight of clear water；Total amount is 1000 parts by weight.
The preparation method of above-mentioned acidification blocking remover：Material is put into acid-resistant reactor by dosage, 40 points are stirred under room temperature
Clock is mixed evenly, and obtains acidification blocking remover.
The application method of above-mentioned acidification blocking remover：Acidification blocking remover is pumped into well wellbore with cementing truck, then is pumped into clear water
Acidification blocking remover is headed into stratum, terminates closing well 5 hours after constructing, drive a well normal production.
Second embodiment：
A kind of traditional performance of three-in-one acidification blocking remover for de-plugging of well is described in detail by laboratory experiment data in this example
Index.
A kind of three-in-one acidification blocking remover for de-plugging of well of the invention has the preposition sour, main acid in conventional acidulation
With the major function of postposition acid, use concentration 33%, 4 hours bentonitic corrosion rates are 44.8%, 4 hours sandstone rock powder it is molten
Erosion rate is 24.3%, is 1.05g/ to the corrosion rate of N80 lacing films at 90 DEG C（m2.h）（Professional standard level-one is≤5 g/
（m2.h））, residual acid surfaces tension is 26.2mN/m（Professional standard is≤32 mN/m）, clay stabilization rate is 85%, and iron ion is steady
It is 81.2% to determine percentage, and anti-acid sludge rate is 99.8%.
3rd embodiment：
A kind of rock core de-plugging of three-in-one acidification blocking remover for de-plugging of well is described in detail by laboratory experiment data in this example
Simulating lab test.
Rock core is polluted using 2 oil well bottom of sinopec Jiangsu oilfield Wei.Rock core length 5.48cm, core diameter 2.54cm,
Porosity 12.9%, core permeability 18.8mD simulate 2 oil reservoir situation of Wei, are 80 DEG C in temperature, are filled using rock core flowing experiment
It sets and carries out oil well acidation de-plugging agent de-plugging experiment, configure blockages relieving fluid stoste according to embodiment 1, injection mode is that " 3% ammonium chloride is molten
Liquid（Test original permeability）The ammonium chloride solution of → 30% acidifying unblocking liquid → 3% ".
Experimental result such as Fig. 1, after injecting three-in-one acidification blocking remover, the permeability of rock core is gradually increasing, by initial infiltration
Rate 18.8mD is improved to 34.3mD, is illustrated to inject the pollution for effectively relieving rock core after three-in-one acidification blocking remover, is expanded rock
The seepage channel of the heart, and the phenomenon that secondary precipitation injures is not generated, be conducive to improve oily well yield.
Fourth embodiment：
By taking sinopec Jiangsu oilfield Wei2-53Jing injects three-in-one acidification blocking remover construction as an example, it is described in detail.
Wei2-53Jing is due to being polluted by organic deposition and inorganic scale near wellbore zone, compared with when going into operation, Liquid output and production
Oil mass declines obviously, and three-in-one acidification blocking remover de-plugging construction has been carried out in 2017.6.14 days, has injected 21 side of acidifying unblocking liquid altogether
（7 side of three-in-one acidification blocking remover）, produce 4.4 tons of liquid before constructing daily, day 0.8 ton of oil-producing, moisture content 81.5%, day after de-plugging construction
Production liquid rises to 11.5 tons, day oil-producing rise to 4.1 tons, moisture content drops to 64.5%, until accumulating crude oil 120 by the end of July
Ton, and remain valid, measure effect is apparent.Construction effect is shown in Fig. 2.
Claims (10)
1. a kind of three-in-one acidification blocking remover for de-plugging of well, which is characterized in that including the following component of weight content：
Multicomponent organic acid 18-26%；
Precipitating inhibitor 15-20%；
Iron chelator 5-8%；
Expansion-resisting agent 4-7%；
Corrosion inhibiter 6-9%；
Hydrogen fluoride 3-6%；
Demulsifier 2-5%；
Anti- acid sludge agent 3-6%；
Waterproof lock agent 3-6%；
Remaining is water.
2. a kind of three-in-one acidification blocking remover for de-plugging of well according to claim 1, which is characterized in that described to have
Machine acid is or mixtures thereof one kind in formic acid, acetic acid, polyacrylic acid, poly, sulfamic acid.
3. a kind of three-in-one acidification blocking remover for de-plugging of well according to claim 1, which is characterized in that described heavy
Shallow lake inhibitor is polyepoxy sodium succinate（PESA）, poly-aspartate（PASP）, Sodium Polyacrylate（PAAS）, 2- phosphonobutanes-
Or mixtures thereof one kind of 1,2,4- tricarboxylic acids.
4. a kind of three-in-one acidification blocking remover for de-plugging of well according to claim 1, which is characterized in that the iron
Ion chelating agent is EDTA-4Na（Ethylenediamine tetra-acetic acid）、EDTA-2Na（Ethylenediamine tetra-acetic acid）, cyclohexylidene ethylenediamine tetraacetic acid (EDTA)
Or mixtures thereof one kind in sodium, sodium gluconate.
5. a kind of three-in-one acidification blocking remover for de-plugging of well according to claim 1, which is characterized in that described anti-
Swollen dose for ammonium chloride, polyquaternium, organic amine or mixtures thereof one kind.
6. a kind of three-in-one acidification blocking remover for de-plugging of well according to claim 1, which is characterized in that described slow
Erosion agent is or mixtures thereof one kind of formaldehyde, cinnamic acid, mercaptobenzothiazoler, cetylamine, benzotriazole.
7. a kind of three-in-one acidification blocking remover for de-plugging of well according to claim 1, which is characterized in that described broken
Emulsion is polyoxyethylene polyoxypropylene octadecyl alcolol ether, polyoxyethylene polyoxypropylene polyethers, alkyl phenolic resin polyoxypropylene polyoxy
Vinethene, polyox-yethylene-polyoxypropylene block copolymer, fatty alcohol（Vinylamine）In the embedding newborn polyethers of polyoxyethylene polyoxypropylene
Or mixtures thereof one kind.
8. a kind of three-in-one acidification blocking remover for de-plugging of well according to claim 1, which is characterized in that described anti-
Acid sludge agent is fatty acid methyl ester ethoxylate, ethoxylated alkyl sulfate, cocoyl glucoside, organic silicon surfactant
In or mixtures thereof one kind.
9. a kind of three-in-one acidification blocking remover for de-plugging of well according to claim 1, which is characterized in that described anti-
It is or mixtures thereof one kind in methanol, ethyl alcohol, butyl glycol ether, butyl that water, which locks agent,.
10. a kind of application process of three-in-one acidification blocking remover for de-plugging of well, which is characterized in that include the following steps：
1）According to individual well design quantity, relationship weighs each component according to the ratio；
2）Each component is added to according to weight fraction in corrosion-resistant reactor, when mixing carries out under room temperature, normal pressure, fully stirs
It mixes 40-50 minutes, each component is made uniformly to mix；
3）Sour tank equipped with acidification blocking remover is connected into oil well mouth by pipeline, while connecting acid filling pump；
4）Acidification blocking remover is injected into pit shaft according to design discharge capacity；
5）According to design quantity injected clear water, the acidification blocking remover in pit shaft is replaced into stratum；
6）Opening well and making production after closing well reacts 3-5 hours.
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| CN109593518A (en) * | 2018-12-06 | 2019-04-09 | 古莱特科技股份有限公司 | A kind of solid acid de-plugging system for acidification of oil field de-plugging |
| CN109810687A (en) * | 2019-03-01 | 2019-05-28 | 中国地质大学（武汉） | A kind of environment-friendly type acidification working solution suitable for the volume increase of hypotonic coalbed methane reservoir |
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| CN110410048A (en) * | 2019-07-02 | 2019-11-05 | 中国石油天然气股份有限公司 | A method of extending acidification validity period |
| CN112228008A (en) * | 2020-10-17 | 2021-01-15 | 濮阳市华瑞通能源工程技术有限公司 | Oil well blockage removing method for seriously-scaled shaft |
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| CN112852396A (en) * | 2021-01-06 | 2021-05-28 | 中国石油天然气股份有限公司 | Multifunctional blocking remover and preparation method thereof |
| CN112852396B (en) * | 2021-01-06 | 2022-05-10 | 中国石油天然气股份有限公司 | Multifunctional blocking remover and preparation method thereof |
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| CN113105880A (en) * | 2021-03-26 | 2021-07-13 | 中海油田服务股份有限公司 | Blockage removal system and application thereof |
| CN113105880B (en) * | 2021-03-26 | 2022-09-06 | 中海油田服务股份有限公司 | Blockage removal system and application thereof |
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Application publication date: 20180911 |