CN102504784A - Descaling blocking remover for oil-water wells - Google Patents
Descaling blocking remover for oil-water wells Download PDFInfo
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- CN102504784A CN102504784A CN2011103543222A CN201110354322A CN102504784A CN 102504784 A CN102504784 A CN 102504784A CN 2011103543222 A CN2011103543222 A CN 2011103543222A CN 201110354322 A CN201110354322 A CN 201110354322A CN 102504784 A CN102504784 A CN 102504784A
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Abstract
The invention discloses descaling blocking remover for oil-water wells, which is characterized by comprising the following components by weight percentage: acid agent 30 to 50 percent, surfactant 5 to 10 percent, complexant 1 to 4 percent, organic solvent 1 to 5 percent, enzyme preparation 0.1 to 1 percent, and water in balancing amount. The novel descaling blocking remover for the oil-water wells aims to overcome the defects in the traditional method, can quickly corrode and dissolve blockage to improve permeability, can effectively shorten construction time and has a remarkable yield-increasing effect.
Description
Technical field
The invention belongs to petrochemical complex and use the chemical article technical field, be specifically related to a kind of oil and water well descaling and blockage relieving liquid.
Background technology
In the process of oil-field development; Because the rising of reservoir pressure, temperature, that injects water and outside fluid does not match the influence of factors such as the managing gathering of bacterial metabolism; Cause inorganic salt, paste obstructions such as compound, biological clay, polymkeric substance, make production capacity can not get bringing into play effectively.Especially in starting from, the oil field of back development stage, profit is further complicated, the pit shaft situation is relatively poor, above-mentioned obstruction is serious day by day.Therefore, the unblocking agent that is used for oil well should use widely, and the kind of unblocking agent is also varied, but traditional well stimulation and block releasing technique are relatively poor to the flexibility of this variation, and effect is undesirable.
Summary of the invention
To the deficiency that exists in the above-mentioned prior art, the invention provides a kind of novel oil and water well descaling and blockage relieving liquid, to solve the defective of traditional method, corrosion fast, dissolving tamper improve rate of permeation, can effectively shorten the engineering time, and effect of increasing production is obvious.
The technical scheme that the present invention adopted is:
A kind of oil and water well descaling and blockage relieving liquid is characterized in that each components based on weight percentage is: compound sour 30 ~ 50%, tensio-active agent 5 ~ 10%, complexing agent 1 ~ 4%, organic solvent 1 ~ 5%, zymin 0.1 ~ 1%, water surplus.
Said compound acid is one or more in hydrochloric acid, hydrofluoric acid, Hydrocerol A, the thionamic acid; Said tensio-active agent is one or more in polyoxyethylene nonylphenol, castor oil polyoxyethylene ether, alkyl poly glucoside, the ethylenediamine tetraacetic methene sodium phosphate; Said complexing agent is a Fe stabilizer; Said zymin is an enzyme.
Said each components based on weight percentage of compound acid is: hydrochloric acid 10 ~ 20%, hydrofluoric acid 5 ~ 8%, Hydrocerol A 1 ~ 5%, thionamic acid 1 ~ 5%.
Each components based on weight percentage of said tensio-active agent is: polyoxyethylene nonylphenol 2 ~ 6%, castor oil polyoxyethylene ether 3 ~ 8%.
Said complexing agent is by weight percentage: Fe stabilizer 1 ~ 4%
Said organic solvent is by weight percentage: ETHYLE ACETATE 1 ~ 5%.
Said zymin is by weight percentage: enzyme 0.1 ~ 1%.
Stirring after above-mentioned each component is miscible at normal temperatures gets final product, and is equipped with high-low pressure medicament ejector head, sends into the shaft bottom behind the connection oil pipe and injects unblocking agent, can remove obstruction fast, shortens the engineering time.
The beneficial effect that the present invention brings is:
1) the present invention disposes simply, and is easy to use, shortens the engineering time, reduces the cost;
Tampers such as 2) the present invention's corrosion fast, dissolve inorganic salts, iron cpd, foundry loam, various polymkeric substance and grease;
3) the present invention can improve water quality, and the formation once more that effectively delays to stop up increases the bottom rate of permeation, improves crude oil fluidity, reaches the purpose that improves oil recovery factor;
4) the present invention is little to stratum and equipment nocuity, and de-plugging is thorough.
Embodiment:
The invention is further illustrated by the following examples, but the present invention is not limited to this.
Embodiment 1
Hydrochloric acid 10%, hydrofluoric acid 5%, Hydrocerol A 1%, thionamic acid 1%, polyoxyethylene nonylphenol 2%, castor oil polyoxyethylene ether 3%, Fe stabilizer 1%, ETHYLE ACETATE 1%, enzyme 0.1%, water surplus.
Embodiment 2
Hydrochloric acid 20%, hydrofluoric acid 8%, Hydrocerol A 5%, thionamic acid 5%, polyoxyethylene nonylphenol 6%, castor oil polyoxyethylene ether 8%, Fe stabilizer 4%, ETHYLE ACETATE 5%, enzyme 1%, water surplus.
Embodiment 3
Hydrochloric acid 15%, hydrofluoric acid 6%, Hydrocerol A 4%, thionamic acid 3%, polyoxyethylene nonylphenol 4%, castor oil polyoxyethylene ether 6%, Fe stabilizer 2%, ETHYLE ACETATE 3%, enzyme 0.5%, water surplus.
Embodiment 4
With the oil well is example, adopts prescription among the embodiment 1 ~ 3, stirs after miscible at normal temperatures, sends into the shaft bottom after connecting oil pipe through shower nozzle, injects unblocking agent, removes the obstruction of clapping performance, can shorten the engineering time fast.
This EE two factories of recovering the oil in long celebrating oil field.
The experiment pound sign is 45N125,49N468 and 38N206.
。
Claims (7)
1. oil and water well descaling and blockage relieving liquid is characterized in that each components based on weight percentage is: compound sour 30 ~ 50%, tensio-active agent 5 ~ 10%, complexing agent 1 ~ 4%, organic solvent 1 ~ 5%, zymin 0.1 ~ 1%, water surplus.
2. a kind of oil and water well descaling and blockage relieving liquid according to claim 1 is characterized in that: said compound acid is one or more in hydrochloric acid, hydrofluoric acid, Hydrocerol A, the thionamic acid; Said tensio-active agent is one or more in polyoxyethylene nonylphenol, castor oil polyoxyethylene ether, alkyl poly glucoside, the ethylenediamine tetraacetic methene sodium phosphate; Said complexing agent is a Fe stabilizer; Said zymin is an enzyme.
3. a kind of oil and water well descaling and blockage relieving liquid according to claim 2 is characterized in that: said each components based on weight percentage of compound acid is: hydrochloric acid 10 ~ 20%, hydrofluoric acid 5 ~ 8%, Hydrocerol A 1 ~ 5%, thionamic acid 1 ~ 5%.
4. a kind of oil and water well descaling and blockage relieving liquid according to claim 2, it is characterized in that: each components based on weight percentage of said tensio-active agent is: polyoxyethylene nonylphenol 2 ~ 6%, castor oil polyoxyethylene ether 3 ~ 8%.
5. a kind of oil and water well descaling and blockage relieving liquid according to claim 2, it is characterized in that: said complexing agent is by weight percentage: Fe stabilizer 1 ~ 4%.
6. a kind of oil and water well descaling and blockage relieving liquid according to claim 2, it is characterized in that: said organic solvent is by weight percentage: ETHYLE ACETATE 1 ~ 5%.
7. a kind of oil and water well descaling and blockage relieving liquid according to claim 2, it is characterized in that: said zymin is by weight percentage: enzyme 0.1 ~ 1%.
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CN2011103543222A CN102504784A (en) | 2011-11-10 | 2011-11-10 | Descaling blocking remover for oil-water wells |
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CN2011103543222A CN102504784A (en) | 2011-11-10 | 2011-11-10 | Descaling blocking remover for oil-water wells |
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Cited By (22)
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CN103666425A (en) * | 2012-09-26 | 2014-03-26 | 中国石油天然气股份有限公司 | Blocking remover for corrosion sulfate composite scale and blocking removing method |
CN104046346A (en) * | 2013-03-13 | 2014-09-17 | 中国石油天然气股份有限公司 | Oil field water injection well descaling agent and preparation method thereof |
CN105062449A (en) * | 2015-08-10 | 2015-11-18 | 李佳芯 | Compound ion fluorinated alkyl sodium sulfate polymer degradation agent and preparation method and application thereof |
CN106147734A (en) * | 2016-07-14 | 2016-11-23 | 东营盛世石油科技有限责任公司 | A kind of green chelating increasing agent and its preparation method and application |
CN106147736A (en) * | 2016-07-14 | 2016-11-23 | 东营盛世石油科技有限责任公司 | A kind of oil field wellbore cleanout and the de-plugging agent of stratum scale removal and preparation thereof and application |
CN106190074A (en) * | 2016-07-14 | 2016-12-07 | 东营盛世石油科技有限责任公司 | The cleaning de-plugging agent of a kind of environmental protection and preparation method |
CN106281279A (en) * | 2016-07-14 | 2017-01-04 | 东营盛世石油科技有限责任公司 | A kind of degradable cleaning de-plugging agent and preparation method thereof |
CN106398673A (en) * | 2016-08-26 | 2017-02-15 | 大连百奥泰科技有限公司 | Biological enzyme blocking remover used for oil and gas fields, and applications thereof |
CN106957640A (en) * | 2017-05-19 | 2017-07-18 | 天津亿利科能源科技发展股份有限公司 | It is a kind of to increase the neutral composite drug that oil reservoir formation permeability carries out crude oil volume increase |
CN107418541A (en) * | 2017-09-04 | 2017-12-01 | 中国石油集团渤海钻探工程有限公司 | It is a kind of to be used to remove descaling and blockage relieving liquid for boring Completion Operations blocking and preparation method thereof |
CN108203580A (en) * | 2016-12-20 | 2018-06-26 | 中国石油化工股份有限公司 | A kind of method using Gemini surface active agent increasing injection |
CN108373911A (en) * | 2018-04-18 | 2018-08-07 | 河北峻极化工科技有限公司 | Blockages relieving fluid and preparation method thereof is chelated applied to middle and high infiltration sandstone reservoir |
CN108517204A (en) * | 2018-04-11 | 2018-09-11 | 扬州润达油田化学剂有限公司 | A kind of three-in-one acidification blocking remover and its application process for de-plugging of well |
CN108822819A (en) * | 2018-06-14 | 2018-11-16 | 兰州凯宏中原石油科技有限公司 | A kind of super low percolation oilfield oil-water well combined removing plug by acid liquid |
CN108865092A (en) * | 2018-05-21 | 2018-11-23 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Water injection well unblocking and injection increasing sustained release chelated acid and preparation method and blockage -removing and stimulation |
CN108929666A (en) * | 2018-06-25 | 2018-12-04 | 西南石油大学 | A kind of sour gas well efficient blockage removing agent |
CN110066649A (en) * | 2018-01-23 | 2019-07-30 | 陕西一诺油气工程技术服务有限公司 | The preparation of a kind of compound organic deblocking agent and in low permeability oil field application |
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2011
- 2011-11-10 CN CN2011103543222A patent/CN102504784A/en active Pending
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CN105062449A (en) * | 2015-08-10 | 2015-11-18 | 李佳芯 | Compound ion fluorinated alkyl sodium sulfate polymer degradation agent and preparation method and application thereof |
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CN108203580A (en) * | 2016-12-20 | 2018-06-26 | 中国石油化工股份有限公司 | A kind of method using Gemini surface active agent increasing injection |
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CN107418541A (en) * | 2017-09-04 | 2017-12-01 | 中国石油集团渤海钻探工程有限公司 | It is a kind of to be used to remove descaling and blockage relieving liquid for boring Completion Operations blocking and preparation method thereof |
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CN108929666A (en) * | 2018-06-25 | 2018-12-04 | 西南石油大学 | A kind of sour gas well efficient blockage removing agent |
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Application publication date: 20120620 |