CN109971444A - Biological enzymolysis blocking agent suitable for oil gas field - Google Patents
Biological enzymolysis blocking agent suitable for oil gas field Download PDFInfo
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- CN109971444A CN109971444A CN201910282930.3A CN201910282930A CN109971444A CN 109971444 A CN109971444 A CN 109971444A CN 201910282930 A CN201910282930 A CN 201910282930A CN 109971444 A CN109971444 A CN 109971444A
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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
- C09K8/52—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
Abstract
The present invention relates to a kind of biological enzymolysis blocking agents suitable for oil gas field, and composition by weight percentage includes complexing agent 1 to 60%；Acid 1 to 40%；Corrosion inhibiter 1 to 20%；Bleeding agent 1 to 10%；Clay stabilizer 1 to 30%；PH adjusting agent 1 to 20%；Biological enzyme 0.01% to 10%；Surplus is water；Corrosion inhibiter is that one of imidazoline corrosion inhibitor, thiocarbamide, sodium nitrate, potassium fluoride, sodium gluconate or two kinds or more mix；Bleeding agent is that one of lauryl sodium sulfate, ether sulfate, alkyl-glucoside, fatty alcohol polyoxyethylene ether or two kinds or more mix；Clay stabilizer is that one of potassium chloride, ammonium chloride, sodium chloride or two kinds or more mix.De-plugging agent acid dosage is few as a result, environmentally friendly, to the nonirritant injury of construction personnel.Extemporaneous preparation is simple, and need to only be diluted with water into design concentration can be used.Oil reservoir can be effectively protected in agent high comprehensive performance, reduce the secondary injury of oil reservoir.
Description
Technical field
The present invention relates to a kind of de-plugging agent more particularly to a kind of biological enzymolysis blocking agents suitable for oil gas field.
Background technique
Formation blockage is the generally existing phenomenon of oil gas field, and drilling well, well cementation, complete well, the various measures such as pressure break and water filling are all
It is possible that damaging to stratum, lead to the generation of blocking.It will lead to water note after blocking not adopt into, oil gas, even
The generation of phenomena such as dried-up well eventually leads to serious economic loss.
Blocking is mainly by cementing the well in drilling well, pressure break, is caused in the operation process such as acidification using improper measures.Operation process
Phenomena such as middle generation formation variation, the original hole in stratum are impaired or exotic blocks stratum throat, causes in-place permeability to decline,
Generate clogging.It is broadly divided into mud particle in nature from tamper, clay swell, secondary mineral precipitating, organic deposition is stifled, nothing
Machine dirt is stifled, emulsion plugging, water lock, wettability reversal, and injection fluid takes particles holography, fine migration in stratum, clay mineral acid
It expands and crushes caused by quick water-sensitive, bacterial action is shaked out.These above-mentioned situations can be solved by de-plugging.
The block releasing technique of oil gas field is now widely used for as acidification block releasing technique.There is shortcomings for the technology, apply
Work is inconvenient；Equipment and pipeline are caused to corrode；Secondary pollution is brought to oil reservoir, the acid of high concentration can destroy the cement of sandstone,
It causes oil well seriously to shake out, new blocking is carried out to chronostratigraphic zone；The corrosion of petroleum pipeline is caused when the row of returning；Remaining acid meeting in crude oil
Electric dehydration station is impacted；Due to its strong acidity, serious destruction will cause to ground vegetation.
It is a kind of suitable for oil gas field to found in view of the above shortcomings, the designer, is actively subject to research and innovation
Biological enzymolysis blocking agent makes it with more the utility value in industry.
Summary of the invention
In order to solve the above technical problems, the object of the present invention is to provide a kind of biological enzymolysis blocking agents suitable for oil gas field.
Biological enzymolysis blocking agent suitable for oil gas field of the invention, in which: composition by weight percentage includes network
Mixture 1 to 60%；Acid 1 to 40%；Corrosion inhibiter 1 to 20%；Bleeding agent 1 to 10%；Clay stabilizer 1 to 30%；PH adjusting agent 1
To 20%；Biological enzyme 0.01% to 10%；Surplus is water；The corrosion inhibiter is imidazoline corrosion inhibitor, thiocarbamide, sodium nitrate, fluorine
Change one of potassium, sodium gluconate or two kinds or more mix；The bleeding agent be lauryl sodium sulfate, ether sulfate,
One of alkyl-glucoside, fatty alcohol polyoxyethylene ether or two kinds or more mix；The clay stabilizer is potassium chloride, chlorine
Change one of ammonium, sodium chloride or two kinds or more mix.
Further, the above-mentioned biological enzymolysis blocking agent suitable for oil gas field, wherein the complexing agent is ethylenediamine tetramethyl
Pitch sodium phosphate, diethylene triamine pentamethylene phosphonic salt, sodium acetate, sodium citrate salt, citric acid sylvite, citric acid ammonium salt, second two
One of amine tetrem acid sodium-salt or two kinds or more mix；Preferred complexing agent is ethylenediamine tetraacetic methene sodium phosphate, divinyl three
One of five methylenephosphonic acid salt of amine and ammonium citrate or two kinds or more.
Further, the above-mentioned biological enzymolysis blocking agent suitable for oil gas field, wherein the acid is hydrochloric acid, lactic acid, second
One of alkyd, citric acid, acetic acid, hydrofluoric acid or two kinds or more mix；Preferred acid is in lactic acid, citric acid and acetic acid
It is one or two or more kinds of.
Further, the above-mentioned biological enzymolysis blocking agent suitable for oil gas field, wherein it is raw also to compound 0.01% to 15%
Object enzyme；The biological enzyme is that one of mannonase cellulase, Xanthan lyase, lipase or two kinds or more are mixed
It closes.
Still further, the above-mentioned biological enzymolysis blocking agent suitable for oil gas field, wherein also compound 1 to 10% pH tune
Agent is saved, the pH adjusting agent is sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, ammonium hydroxide or ammonia, diethanol amine, three ethyl alcohol
Or mixtures thereof one of amine；The pH to 1 to 12 of de-plugging agent is adjusted, preferably pH is 5.
According to the above aspect of the present invention, the present invention has at least the following advantages:
1, de-plugging agent acid dosage is few, environmentally friendly, to the nonirritant injury of construction personnel.
2, extemporaneous preparation is simple, and need to only be diluted with water into design concentration can be used.
3, oil reservoir can be effectively protected in agent high comprehensive performance, reduce the secondary injury of oil reservoir, and does not corrode underground
Equipment and pipeline.
4, using biological enzyme resistant to high temperature, it can tolerate formation temperature, biocatalysis function can be played under the conditions of high-temperature stratum
Can, release the formation blockage as caused by biopolymer；New gap and runner are established, gas stream permeability is restored and increase,
Excite the oil-producing gas ability of oil/gas well.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, with presently preferred embodiments of the present invention, detailed description is as follows below.
Specific embodiment
With reference to embodiment, the embodiment of the present invention is furthur described in detail.Following embodiment is used for
Illustrate the present invention, but is not intended to limit the scope of the invention.
Suitable for the biological enzymolysis blocking agent of oil gas field, unusual place is: composition by weight percentage
Including complexing agent 1 to 60%；Acid 1 to 40%；Corrosion inhibiter 1 to 20%；Bleeding agent 1 to 10%；Clay stabilizer 1 to 30%；pH
Regulator 1 to 20%；Biological enzyme 0.01% to 10%；Surplus is water.
From the point of view of a preferable embodiment of the invention, the corrosion inhibiter that the present invention uses is imidazoline corrosion inhibitor, sulphur
One of urea, sodium nitrate, potassium fluoride, sodium gluconate or two kinds or more mix.Meanwhile in order to possess preferably infiltration effect
Fruit, bleeding agent be one of lauryl sodium sulfate, ether sulfate, alkyl-glucoside, fatty alcohol polyoxyethylene ether or
Two kinds or more mix.Clay stabilizer is that one of potassium chloride, ammonium chloride, sodium chloride or two kinds or more mix.
Furthermore, the complexing agent that the present invention uses is ethylenediamine tetraacetic methene sodium phosphate, five methene phosphine of diethylenetriamine
One of hydrochlorate, sodium acetate, sodium citrate salt, citric acid sylvite, citric acid ammonium salt, disodium edta or two kinds with
Upper mixing.From the point of view of actual implementation, preferred complexing agent is ethylenediamine tetraacetic methene sodium phosphate, diethylene triamine pentamethylene phosphonic
One of salt and ammonium citrate or two kinds or more.
Meanwhile acid is that one of hydrochloric acid, lactic acid, glycolic, citric acid, acetic acid, hydrofluoric acid or two kinds or more mix.It is excellent
The acid of choosing is one of lactic acid, citric acid and acetic acid or two kinds or more.
Furthermore, also compounding 0.01% to 15% biological enzyme to possess better plugging removal effect；Biological enzyme is
One of mannonase cellulase, Xanthan lyase, lipase or two kinds or more mix.Also, also compounding 1 to
10% pH adjusting agent, pH adjusting agent be sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, ammonium hydroxide or ammonia, diethanol amine,
Or mixtures thereof one of triethanolamine.The pH to 1 to 12 of de-plugging agent is adjusted, preferably pH is 5.
Working principle of the present invention is as follows:
Embodiment one
Suitable for the biological enzymolysis blocking agent of oil gas field, unusual place is: composition by weight percentage
Including complexing agent 1%；Acid 1%；Corrosion inhibiter 1%；Bleeding agent 1%；Clay stabilizer 1%；PH adjusting agent 1%；Biological enzyme
0.01%；Surplus is water.
The corrosion inhibiter that the present invention uses mixes for imidazoline corrosion inhibitor, thiocarbamide.Meanwhile in order to possess preferably infiltration effect
Fruit, bleeding agent are lauryl sodium sulfate, ether sulfate, alkyl-glucoside de mixing.Clay stabilizer is potassium chloride, chlorine
Change the mixing of ammonium.
Furthermore, the complexing agent that the present invention uses is ethylenediamine tetraacetic methene sodium phosphate, five methene phosphine of diethylenetriamine
The mixing of hydrochlorate.Complexing agent is the mixing of ethylenediamine tetraacetic methene sodium phosphate, diethylene triamine pentamethylene phosphonic salt and ammonium citrate.
Meanwhile acid is the mixing of hydrochloric acid, lactic acid.Also compound 0.01 biological enzyme；Biological enzyme is mannonase cellulose
One of enzyme, Xanthan lyase, lipase or two kinds or more mix.Also, the pH adjusting agent of also compounding 1%, pH are adjusted
Agent is the mixture of sodium hydroxide, potassium hydroxide.Adjust the pH to 2 of de-plugging agent.
Embodiment two
Suitable for the biological enzymolysis blocking agent of oil gas field, it is characterized in that: composition by weight percentage includes being complexed
Agent 60%；Acid 40%；Corrosion inhibiter 20%；Bleeding agent 10%；Clay stabilizer 30%；PH adjusting agent 20%；Biological enzyme 10%；It is remaining
Amount is water.
From the point of view of a preferable embodiment of the invention, the corrosion inhibiter that the present invention uses is potassium fluoride, sodium gluconate
One of or two kinds or more mix.Meanwhile in order to possess preferable osmotic effect, bleeding agent is alkyl-glucoside, fat
One of alcohol polyoxyethylene ether or two kinds or more mix.Clay stabilizer be one of ammonium chloride, sodium chloride or two kinds with
Upper mixing.
Furthermore, the complexing agent that the present invention uses is sodium citrate salt, citric acid sylvite, citric acid ammonium salt, second two
One of amine tetrem acid sodium-salt or two kinds or more mix.From the point of view of actual implementation, preferred complexing agent is diethylenetriamine
One of five methylenephosphonic acid salt and ammonium citrate or two kinds or more.
Meanwhile acid is that one of citric acid, acetic acid, hydrofluoric acid or two kinds or more mix.In order to possess better de-plugging
Effect also compounds 15% biological enzyme；Biological enzyme is that one of Xanthan lyase, lipase or two kinds or more mix.Also,
The also pH adjusting agent of compounding 10%, pH adjusting agent are one of ammonium hydroxide or ammonia, diethanol amine, triethanolamine or its mixing
Object.Adjust the pH to 10 of de-plugging agent.
Embodiment three
Suitable for the biological enzymolysis blocking agent of oil gas field, it is characterized in that: composition by weight percentage includes being complexed
Agent 30%；Acid 30%；Corrosion inhibiter 15%；Bleeding agent 6%；Clay stabilizer 20%；PH adjusting agent 18%；Biological enzyme 6%；Surplus
For water.
From the point of view of a preferable embodiment of the invention, the corrosion inhibiter that the present invention uses is potassium fluoride, sodium gluconate
One of or two kinds or more mix.Meanwhile in order to possess preferable osmotic effect, bleeding agent is alkyl-glucoside, fat
One of alcohol polyoxyethylene ether or two kinds or more mix.Clay stabilizer be one of ammonium chloride, sodium chloride or two kinds with
Upper mixing.
Furthermore, the complexing agent that the present invention uses is sodium citrate salt, citric acid sylvite, citric acid ammonium salt, second two
One of amine tetrem acid sodium-salt or two kinds or more mix.From the point of view of actual implementation, preferred complexing agent is diethylenetriamine
One of five methylenephosphonic acid salt and ammonium citrate or two kinds or more.
Meanwhile acid is that one of citric acid, acetic acid, hydrofluoric acid or two kinds or more mix.In order to possess better de-plugging
Effect also compounds 10% biological enzyme；Biological enzyme is that one of Xanthan lyase, lipase or two kinds or more mix.Also,
The also pH adjusting agent of compounding 8%, pH adjusting agent are or mixtures thereof one of ammonium hydroxide or ammonia, diethanol amine, triethanolamine.
Adjust the pH to 10 of de-plugging agent.
It can be seen that after applying the present invention by above-mentioned character express, gather around and have the following advantages:
1, de-plugging agent acid dosage is few, environmentally friendly, to the nonirritant injury of construction personnel.
2, extemporaneous preparation is simple, and need to only be diluted with water into design concentration can be used.
3, oil reservoir can be effectively protected in agent high comprehensive performance, reduce the secondary injury of oil reservoir, and does not corrode underground
Equipment and pipeline.
4, using biological enzyme resistant to high temperature, it can tolerate formation temperature, biocatalysis function can be played under the conditions of high-temperature stratum
Can, release the formation blockage as caused by biopolymer；New gap and runner are established, gas stream permeability is restored and increase,
Excite the oil-producing gas ability of oil/gas well.
The above is only a preferred embodiment of the present invention, it is not intended to restrict the invention, it is noted that for this skill
For the those of ordinary skill in art field, without departing from the technical principles of the invention, can also make it is several improvement and
Modification, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (5)
1. being suitable for the biological enzymolysis blocking agent of oil gas field, it is characterised in that: composition by weight percentage includes,
Complexing agent 1 to 60%；
Acid 1 to 40%；
Corrosion inhibiter 1 to 20%；
Bleeding agent 1 to 10%；
Clay stabilizer 1 to 30%；
PH adjusting agent 1 to 20%；
Biological enzyme 0.01% to 10%；
Surplus is water；
The corrosion inhibiter be one of imidazoline corrosion inhibitor, thiocarbamide, sodium nitrate, potassium fluoride, sodium gluconate or two kinds with
Upper mixing；
The bleeding agent is lauryl sodium sulfate, ether sulfate, alkyl-glucoside, one in fatty alcohol polyoxyethylene ether
It plants or two kinds or more mixes；
The clay stabilizer is that one of potassium chloride, ammonium chloride, sodium chloride or two kinds or more mix.
2. the biological enzymolysis blocking agent according to claim 1 suitable for oil gas field, it is characterised in that: the complexing agent is second
Four methene sodium phosphate of diamines, diethylene triamine pentamethylene phosphonic salt, sodium acetate, sodium citrate salt, citric acid sylvite, ammonium citrate
One of salt, disodium edta or two kinds or more mix；Preferred complexing agent is ethylenediamine tetraacetic methene sodium phosphate, two
One of five methylenephosphonic acid salt of ethylene triamine and ammonium citrate or two kinds or more.
3. the biological enzymolysis blocking agent according to claim 1 suitable for oil gas field, it is characterised in that: it is described acid be hydrochloric acid,
One of lactic acid, glycolic, citric acid, acetic acid, hydrofluoric acid or two kinds or more mix；Preferred acid be lactic acid, citric acid and
One of acetic acid or two kinds or more.
4. the biological enzymolysis blocking agent according to claim 1 suitable for oil gas field, it is characterised in that: also compound 0.01% to
15% biological enzyme；The biological enzyme is one of mannonase cellulase, Xanthan lyase, lipase or two kinds
The above mixing.
5. the biological enzymolysis blocking agent according to claim 1 suitable for oil gas field, it is characterised in that: also compound 1 to 10%
PH adjusting agent, the pH adjusting agent be sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, ammonium hydroxide or ammonia, diethanol amine,
Or mixtures thereof one of triethanolamine；The pH to 1 to 12 of de-plugging agent is adjusted, preferably pH is 5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910282930.3A CN109971444A (en) | 2019-04-10 | 2019-04-10 | Biological enzymolysis blocking agent suitable for oil gas field |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439516A (en) * | 2019-06-24 | 2019-11-12 | 大庆井升伟业油田技术服务有限公司 | One kind being suitable for Ternary composite drive well and exempts from outlet de-plugging unfreezing integration working solution and technique |
| CN112410008A (en) * | 2020-12-07 | 2021-02-26 | 西安长庆化工集团有限公司 | Biological enzyme treating agent for oil field and preparation method and application thereof |
| CN112778991A (en) * | 2021-01-08 | 2021-05-11 | 中国石油天然气集团公司 | Biological enzyme composite blocking remover and preparation method thereof |
| CN113025294A (en) * | 2021-03-26 | 2021-06-25 | 大庆井升伟业油田技术服务有限公司 | Plugging-removing injection-increasing agent suitable for chemical flooding sewage reinjection well and process |
| CN113652216A (en) * | 2021-08-17 | 2021-11-16 | 海域泰和(山东)能源科技有限公司 | Biological shearing agent for improving oil extraction efficiency of low-permeability oil reservoir and preparation method and application thereof |
| CN117447977A (en) * | 2023-12-18 | 2024-01-26 | 东营市百扬石油科技有限责任公司 | Preparation method and application of blocking remover containing biological enzyme |
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| CN113025294A (en) * | 2021-03-26 | 2021-06-25 | 大庆井升伟业油田技术服务有限公司 | Plugging-removing injection-increasing agent suitable for chemical flooding sewage reinjection well and process |
| CN113652216A (en) * | 2021-08-17 | 2021-11-16 | 海域泰和(山东)能源科技有限公司 | Biological shearing agent for improving oil extraction efficiency of low-permeability oil reservoir and preparation method and application thereof |
| CN113652216B (en) * | 2021-08-17 | 2023-03-28 | 海域泰和(山东)能源科技有限公司 | Biological shearing agent for improving oil extraction efficiency of low-permeability oil reservoir and preparation method and application thereof |
| CN117447977A (en) * | 2023-12-18 | 2024-01-26 | 东营市百扬石油科技有限责任公司 | Preparation method and application of blocking remover containing biological enzyme |
| CN117447977B (en) * | 2023-12-18 | 2024-02-23 | 东营市百扬石油科技有限责任公司 | Preparation method and application of blocking remover containing biological enzyme |
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