CN107892910A - Inexpensive multifunctional acid liquid system - Google Patents

Inexpensive multifunctional acid liquid system Download PDF

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Publication number
CN107892910A
CN107892910A CN201711106852.9A CN201711106852A CN107892910A CN 107892910 A CN107892910 A CN 107892910A CN 201711106852 A CN201711106852 A CN 201711106852A CN 107892910 A CN107892910 A CN 107892910A
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acid
liquid system
hydrochloric acid
corrosion inhibiter
ratio
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CN201711106852.9A
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邹鹏
张世林
张苏杰
王颖
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CNPC Bohai Drilling Engineering Co Ltd
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CNPC Bohai Drilling Engineering Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/60—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
    • 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
    • C09K8/602—Compositions for stimulating production by acting on the underground formation containing surfactants
    • 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
    • C09K8/602—Compositions for stimulating production by acting on the underground formation containing surfactants
    • C09K8/604—Polymeric surfactants
    • 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
    • C09K8/725—Compositions containing polymers
    • 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
    • C09K8/78—Eroding chemicals, e.g. acids combined with additives added for specific purposes for preventing sealing
    • 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
    • C09K2208/26—Gel breakers other than bacteria or enzymes

Abstract

The invention discloses one kind, inexpensive multifunctional acid liquid system, form by mass percentage as follows：Hydrochloric acid 5%~30%, cleanup additive 0.001%~2%, expansion-resisting agent 0.05%~2%, ferrous stability 0.05%~2%, demulsifier 0.05%~2%, corrosion inhibiter 0.05%~5%, antiacid slag agent 0.001%~2%, friction reducer 0.01%~0.5%, surplus are water；Wherein hydrochloric acid is according to pure hydrogen chloride quality meter.The inexpensive multifunctional acid liquid system, it is applied to carbonic acid rock formation, on the basis of keeping acid liquid performance excellent, reduces cost more than 15%；It has that cost is low, high to carbonate rock corrosion rate, liquid resistance-reducing performance is good, preventive effect of expansion is good, corrosion inhibition is excellent, antiacid slag is good, demulsification efficiency is high, the low easily row of returning of surface tension, iron ion stabilizing power is strong, compatibility is good etc. integrates excellent multifunctional performance feature concurrently simultaneously.

Description

Inexpensive multifunctional acid liquid system
Technical field
The present invention relates to oilfield prospecting developing field, and in particular to a kind of inexpensive multifunctional acid liquid system.
Background technology
Acidizing treatment is one of carbonate rock and sandstone reservoir reservoir stimulation measure.At present, domestic and international oilfield water The acid solution of well acidizing construction usage is mainly hydrochloric acid (being directed to carbonate reservoir) and mud acid (being directed to sandstone reservoir).It is acidified principle Simultaneously to dissolve the rock forming mineral in reservoir, external contaminants or tamper using the chemical corrosion of acid solution, kickback, expand It is big or create or cleaning reservoir pore throat passage, to recover or improve the permeability of reservoir, substantially reduce fluid and enter well resistance, with up to To well production increment or intensified injection of wells purpose.As international oil price constantly reduced in recent years, Oil And Gas Exploration And Development cost one It is straight high, cause domestic and international oil enterprise to lose, be forced the underproduction.Under such a background, whole world oil enterprise and oil clothes are public Department is by the improvement of technology to reach the reduction purpose of cost of exploration ＆ development.Equally, before acid fluid system performance is ensured Put, reducing the cost of the cost particularly acid fluid system of acidizing treatment becomes a development trend in future.
At present, generally use hydrochloric acid is acidified that (Wang Desheng, the exploitation of the modern oil fracture acidizing are new to carbonate reservoir Technical application handbook, Beijing petroleum industry publishing house, 2006), in acidization, hydrochloric acid is swift in response with carbonate rock, short The effective corrosion carbonate rock mineral of time interior energy simultaneously produce great amount of carbon dioxide gas.However, this conventional hydrochloric acid acid solution body System faces problems with：(1) in existing conventional acid system, demineralizing acid weight/mass percentage composition outside 5%-30%, use by other acidifyings Additive dosage is universal higher, causes every side's acid fluid system high expensive；(2) it is acidified for the high Oil/gas Well of bottom hole temperature (BHT) During operation, hot conditions increase acid solution to down-hole string and the extent of corrosion of equipment, shorten its service life, maintenance is changed Cost is significantly increased, and high-temperature corrosion inhibitor or synergist are added in acid fluid system can slow down extent of corrosion, increase the service life, and drop Low-dimensional repaiies replacement cost；(3) when conventional acid is acidified, in the case of Different Strata, acid solution possible crude oil, impurity or iron rust etc. form acid Slag, influence oil extraction；(4) when higher clay minerals are contained on acidifying purpose stratum, clay swell is likely to occur after acidifying And migration, reservoir permeability is reduced, and then influence acidifying correctional effect；(5) acid solution is being constructed into well to target zone, acid in pit shaft Liquid frictional resistance is higher, weakens acid solution to the pressure in shaft bottom, shortens formation acidizing depth；(6) crude oil is residual with being formed after acidifying It is sour easily to form emulsion, influence crude oil extraction；(7) existing iron ion easily forms precipitation in pit shaft, with blocking pit shaft or nearly well Band.
The content of the invention
In order to solve the above-mentioned technical problem, the present invention provides a kind of inexpensive multifunctional acid liquid system, and it is applied to carbonic acid Rock formation, on the basis of keeping acid liquid performance excellent, reduce cost more than 15%；The acid fluid system has cost concurrently simultaneously It is low, high to carbonate rock corrosion rate, liquid resistance-reducing performance is good, preventive effect of expansion is good, corrosion inhibition is excellent, antiacid slag is good, demulsification The comprehensive excellent multifunctional performance features such as rate is high, the low easily row of returning of surface tension, iron ion stabilizing power is strong, compatibility is good.
Therefore, technical scheme is as follows：
A kind of inexpensive multifunctional acid liquid system, form by mass percentage as follows：
Hydrochloric acid 5%~30%, cleanup additive 0.001%~2%, expansion-resisting agent 0.05%~2%, ferrous stability 0.05% ~2%, demulsifier 0.05%~2%, corrosion inhibiter 0.05%~5%, antiacid slag agent 0.001%~2%, friction reducer 0.01%~ 0.5%, surplus is water；
Wherein hydrochloric acid is according to pure hydrogen chloride quality meter；
Described cleanup additive be betaine type amphoteric surfactant, quaternary ammonium salt cationic type surfactant, carboxylic acid type the moon from In subtype surfactant and perfluoro capryl polyethenoxy ether class nonionic surfactant any one or it is any several arbitrarily to compare Mixture；
Described expansion-resisting agent is dimethyl diallyl ammonium chloride, PDDA, potassium chloride and chlorine Change any one in ammonium or any several mixtures with any ratio；
Described ferrous stability is citric acid, nitrilotriacetic acid, sodium ascorbate, nitrilotriacetic acid trisodium, diethyl Any one in alkene Che1300 or any several mixtures with any ratio；
Described demulsifier be butyl glycol ether, butyl, in triethylene glycol butyl ether in any one or Any several mixtures with any ratio；
Described corrosion inhibiter is aldehyde ketone amine polycondensation species corrosion inhibiter, quaternized pyridinium salt corrosion inhibiter, imidazoline corrosion inhibitor In any one or any several mixtures with any ratio；
Described antiacid slag agent is DBSA or neopelex or the mixture of both；
Described friction reducer is anionic acrylamido copolymer emulsion, cationic acrylamido copolymer breast Any one in liquid and amphoteric ion type acrylamido copolymer emulsion or any several mixtures with any ratio.
Further, described corrosion inhibiter is used cooperatively with synergist, and described synergist is alkynol, antimony oxide, iodine Change any one in potassium and KBr or any several mixtures with any ratio.Further, the quality of the synergist accounts for The 0.02%-0.15% of the inexpensive multifunctional acid liquid system quality.
It is preferred that a kind of inexpensive multifunctional acid liquid system, component is as follows by mass percentage：Hydrochloric acid 10%~20%, is helped Row's agent 0.003%~0.1%, expansion-resisting agent 0.1%~0.5%, ferrous stability 0.1%~0.6%, demulsifier 0.1%~ 1%, corrosion inhibiter 0.1%~1%, antiacid slag agent 0.001%~0.5%, friction reducer 0.02%~0.1%, surplus is water；Wherein Hydrochloric acid is according to pure hydrogen chloride quality meter.
It is further preferred that a kind of inexpensive multifunctional acid liquid system, component is as follows by mass percentage：Hydrochloric acid is (with pure hydrogen chloride Meter) 15%~20%, cleanup additive 0.005%~0.01%, expansion-resisting agent 0.2%~0.3%, ferrous stability 0.2%~ 0.3%, demulsifier 0.3%~0.5%, corrosion inhibiter 0.2%~0.3%, antiacid slag agent 0.005%~0.015%, friction reducer 0.03%~0.05%, surplus is water；Wherein hydrochloric acid is according to pure hydrogen chloride quality meter.
The inexpensive multifunctional acid liquid system has the following advantages that：
1) there is multifunctionality, in addition to the carbonate reservoir acidifying function of routine, also there is the row of helping, clay to suppress, The seven big additional functions such as precipitation of iron ions suppression, demulsification, inhibition, antiacid slag, drop resistance.
2) excellent performance of each function and the beneficial effect that cost is cheap, under optimal acid formula, the acid are provided simultaneously with Liquid system is up to 95.9%~97.5% to Middle East oil well chip sample corrosion rate, and acid fluid system surface tension is as little as 21.2mN/m, anti-dilative are up to 98.9%, and iron ion complexing power is up to 1150mg/mL, and demulsification efficiency is up to during 30min at 90 DEG C 98%, to N80 steel discs static etch rate as little as 0.17g/ (m at 90 DEG C2.h), at 120 DEG C to N80 steel disc Dynamic Corrosion speed As little as 12.3g/ (m2.h), 96.8% is up to the antiacid slag rate of Middle East oil well oil sample, resistance-reducing yield is up to 82.3%, matches somebody with somebody 5 property are good, and it is extremely excellent that above-mentioned performance indications embody acid fluid system key performance；
3) optimum formula provided by the invention passes through cost accounting, per as little as 450 yuan of square acid solution cost, more similar acid solution into This reduction by more than 15%.
4) close flash point of all additives is above 70 DEG C, is not belonging to inflammable explosive article, is very advantageous in and is exported to state Outer market carries out Acidizing Technology service.
Embodiment
Technical scheme is described in detail with reference to embodiments.
The compound method of the inexpensive multifunctional acid liquid system is as follows：The method that interior uses circulation using stirring or scene Concentrated hydrochloric acid or technical hydrochloric acid are well mixed with water, the concentration of mixed liquor is reached requirement concentration；The friction reducer of concentration will be required It is slowly added in above-mentioned mixed liquor, stirs 5~15min, make to be completely dissolved；Add the corrosion inhibiter for requiring concentration, stirring 5~ 15min, make to be completely dissolved；Finally by remaining additive, concentration together or sequentially adds on request, stirs 5~15min, obtains Target product.
The inexpensive multifunctional acid liquid system of embodiment 1~20
Note：All components are by mass percentage；Hydrochloric acid is in terms of pure hydrogen chloride.
Acid fluid system performance evaluation and effect
Evaluation method is referring especially to following methods：The corrosion inhibition evaluation method of acid fluid system refers to SY/T 5405-1996 《Corrosion inhibiter method for testing performance and evaluation index are used in acidifying》It is measured；The anti-swollen method of evaluating performance reference of acid fluid system SY/T 5971-2016《Oil-gas field fracturing is acidified and water filling clay stabilizer method of evaluating performance》It is measured；Acid fluid system The row's of helping performance i.e. surface tension evaluation method refer to SY/T 5370-1999《Surface and interfacial tension assay method》Surveyed It is fixed；The antiacid slag method of evaluating performance of acid fluid system refers to SY/T 5753-1995《Oil well production increasing intensified injection of wells arranges application surface The indoor evaluation method of activating agent》It is measured；The demulsification performance evaluation method of acid fluid system refers to SY/T 5754-2016《Oil Well acidizing mutual solvent method of evaluating performance》It is measured；The iron ion stabilizing power evaluation method of acid fluid system refers to SY/ T6571-2003《Ferrous stability method of evaluating performance is used in acidifying》It is measured；The corrosion inhibition evaluation method of acid fluid system With reference to SY/T 5405-1996《Corrosion inhibiter method for testing performance and evaluation index are used in acidifying》It is measured.
Embodiment 1-20 the performance test results are as follows：
The inexpensive multifunctional acid liquid system effect is as follows：
1) all additives in acid fluid system, its close flash point are above 70 DEG C, are not belonging to inflammable explosive article, extremely beneficial Acidizing Technology service is carried out in being exported to overseas market.
2) acid fluid system in addition to the carbonate reservoir acidifying function of routine, also has the row of helping, glued with multifunctionality The seven big additional functions such as native suppression, precipitation of iron ions suppression, demulsification, inhibition, antiacid slag, drop resistance.
3) acid fluid system is provided simultaneously with the excellent performance of each function and the beneficial effect that cost is cheap, in optimal acid formula Under (embodiment 3), the acid fluid system is up to 95.9%-97.5%, acid solution body to the well chip sample corrosion rate in Middle East oil field It is surface tension as little as 21.2mN/m, anti-dilative is up to 98.9%, and iron ion complexing power is up to 1150mg/mL, at 90 DEG C Demulsification efficiency is up to 98% during 30min, to N80 steel discs static etch rate as little as 0.17g/ (m at 90 DEG C2.h), it is right at 120 DEG C N80 steel disc Dynamic Corrosions speed as little as 22.3g/ (m2.h), 96.8% is up to the antiacid slag rate of Middle East oil well oil sample, drop resistance Rate is up to 82.3%, and compatibility is good, and above-mentioned performance indications embody acid fluid system key performance and its excellent；
4) acid fluid system of embodiment 3 passes through cost accounting, per as little as 450 yuan of square acid solution cost, far below similar acid solution Cost.

Claims (5)

1. a kind of inexpensive multifunctional acid liquid system, it is characterised in that form by mass percentage as follows：
Hydrochloric acid 5%~30%, cleanup additive 0.001%~2%, expansion-resisting agent 0.05%~2%, ferrous stability 0.05%~ 2%, demulsifier 0.05%~2%, corrosion inhibiter 0.05%~5%, antiacid slag agent 0.001%~2%, friction reducer 0.01%~ 0.5%, surplus is water；
Wherein hydrochloric acid is according to pure hydrogen chloride quality meter；
Described cleanup additive is betaine type amphoteric surfactant, quaternary ammonium salt cationic type surfactant, carboxylic acid type anionic Any one in surfactant and perfluoro capryl polyethenoxy ether class nonionic surfactant or any several mixing with any ratio Compound；
Described expansion-resisting agent is dimethyl diallyl ammonium chloride, PDDA, potassium chloride and ammonium chloride In any one or any several mixtures with any ratio；
Described ferrous stability is citric acid, nitrilotriacetic acid, sodium ascorbate, nitrilotriacetic acid trisodium, divinyl three Any one in triamine pentaacetic acid sodium or any several mixtures with any ratio；
Described demulsifier be butyl glycol ether, butyl, in triethylene glycol butyl ether in any one or it is any Several mixtures with any ratio；
Described corrosion inhibiter is in aldehyde ketone amine polycondensation species corrosion inhibiter, quaternized pyridinium salt corrosion inhibiter, imidazoline corrosion inhibitor Any one or any several mixtures with any ratio；
Described antiacid slag agent is DBSA or neopelex or the mixture of both；
Described friction reducer be anionic acrylamido copolymer emulsion, cationic acrylamido copolymer emulsion and Any one in amphoteric ion type acrylamido copolymer emulsion or any several mixtures with any ratio.
2. a kind of inexpensive multifunctional acid liquid system, it is characterised in that component is as follows by mass percentage：Hydrochloric acid 10%~20%, Cleanup additive 0.003%~0.1%, expansion-resisting agent 0.1%~0.5%, ferrous stability 0.1%~0.6%, demulsifier 0.1% ~1%, corrosion inhibiter 0.1%~1%, antiacid slag agent 0.001%~0.5%, friction reducer 0.02%~0.1%, surplus is water；Its Middle hydrochloric acid is according to pure hydrogen chloride quality meter.
3. a kind of inexpensive multifunctional acid liquid system, it is characterised in that component is as follows by mass percentage：A kind of more work(of low cost Energy acid fluid system, component is as follows by mass percentage：Hydrochloric acid (in terms of pure hydrogen chloride) 15%~20%, cleanup additive 0.005%~ 0.01%, expansion-resisting agent 0.2%~0.3%, ferrous stability 0.2%~0.3%, demulsifier 0.3%~0.5%, corrosion inhibiter 0.2%~0.3%, antiacid slag agent 0.005%~0.015%, friction reducer 0.03%~0.05%, surplus is water；Wherein hydrochloric acid It is according to pure hydrogen chloride quality meter.
4. the inexpensive multifunctional acid liquid system as described in claim 1 or 2 or 3, it is characterised in that：Described corrosion inhibiter and synergy Agent is used cooperatively, and described synergist is any one in alkynol, antimony oxide, KI and KBr or any several With the mixture of any ratio.
5. inexpensive multifunctional acid liquid system as claimed in claim 4, it is characterised in that：The quality of the synergist accounts for described low The 0.02%~0.15% of cost multifunctional acid liquid system quality.
CN201711106852.9A 2017-11-10 2017-11-10 Inexpensive multifunctional acid liquid system Pending CN107892910A (en)

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CN108913110A (en) * 2018-06-22 2018-11-30 钦州学院 A kind of modified drag reduction method of LOW PERMEABILITY RESERVOIR rock layer surface
CN108949137A (en) * 2018-07-21 2018-12-07 东营市宝泽能源科技有限公司 A kind of low frictional resistance acid
CN109294549A (en) * 2018-08-30 2019-02-01 赵晴晴 A kind of high temperature oil field acidification corrosion inhibitor and preparation method
CN109294550A (en) * 2018-09-26 2019-02-01 中国石油天然气股份有限公司 A kind of main acid and preparation method thereof for the compound acid fracturing of sandstone reservoir
CN109777389A (en) * 2019-03-04 2019-05-21 北京国海能源技术研究院 A kind of MH acid system and preparation method thereof suitable for reservoir blockages relieving acidification
CN109772104A (en) * 2019-02-20 2019-05-21 中国海洋石油集团有限公司 A kind of pickling H2S SCAVENGER and its application method
CN110359053A (en) * 2019-08-21 2019-10-22 甘肃泰升化工科技有限公司 A kind of compound Imidazoline Quatemary-ammonium-salt Corrosion Inhibitor and preparation method thereof
CN110511735A (en) * 2019-09-12 2019-11-29 西安石油大学 High-viscosity strong-corrosion acid liquor system for tight oil reservoir
CN115418210A (en) * 2022-07-29 2022-12-02 扬州润达油田化学剂有限公司 Preparation and application of acid residue resistant cleanup additive for multi-acid acidification

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CN107216867A (en) * 2017-06-14 2017-09-29 陕西延长石油(集团)有限责任公司研究院 A kind of low viscous drop resistance slippery water acid solution for Carbonate Reservoir

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CN105086989A (en) * 2014-05-19 2015-11-25 中国石油化工股份有限公司 Shale gas reservoir pre-fracture composite acid solution, preparation method and application thereof
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CN105950129A (en) * 2016-05-11 2016-09-21 中国石油天然气股份有限公司 Methanesulfonic acid-ammonium hydrogen fluoride acid liquid system and preparation method and application thereof
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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108913110A (en) * 2018-06-22 2018-11-30 钦州学院 A kind of modified drag reduction method of LOW PERMEABILITY RESERVOIR rock layer surface
CN108913110B (en) * 2018-06-22 2020-11-10 钦州学院 Low-permeability reservoir rock stratum surface modification drag reduction method
CN108949137A (en) * 2018-07-21 2018-12-07 东营市宝泽能源科技有限公司 A kind of low frictional resistance acid
CN109294549A (en) * 2018-08-30 2019-02-01 赵晴晴 A kind of high temperature oil field acidification corrosion inhibitor and preparation method
CN109294550B (en) * 2018-09-26 2021-06-01 中国石油天然气股份有限公司 Main acid for sandstone reservoir composite acid fracturing and preparation method thereof
CN109294550A (en) * 2018-09-26 2019-02-01 中国石油天然气股份有限公司 A kind of main acid and preparation method thereof for the compound acid fracturing of sandstone reservoir
CN109772104A (en) * 2019-02-20 2019-05-21 中国海洋石油集团有限公司 A kind of pickling H2S SCAVENGER and its application method
CN109772104B (en) * 2019-02-20 2021-07-20 中国海洋石油集团有限公司 Hydrogen sulfide absorbent for acid washing and use method thereof
CN109777389A (en) * 2019-03-04 2019-05-21 北京国海能源技术研究院 A kind of MH acid system and preparation method thereof suitable for reservoir blockages relieving acidification
CN110359053A (en) * 2019-08-21 2019-10-22 甘肃泰升化工科技有限公司 A kind of compound Imidazoline Quatemary-ammonium-salt Corrosion Inhibitor and preparation method thereof
CN110511735B (en) * 2019-09-12 2021-05-07 西安石油大学 High-viscosity strong-corrosion acid liquor system for tight oil reservoir
CN110511735A (en) * 2019-09-12 2019-11-29 西安石油大学 High-viscosity strong-corrosion acid liquor system for tight oil reservoir
CN115418210A (en) * 2022-07-29 2022-12-02 扬州润达油田化学剂有限公司 Preparation and application of acid residue resistant cleanup additive for multi-acid acidification

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