CN103923634B - A kind of microemulsion mutual solvent for oil well acidation - Google Patents
A kind of microemulsion mutual solvent for oil well acidation Download PDFInfo
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- CN103923634B CN103923634B CN201410190758.6A CN201410190758A CN103923634B CN 103923634 B CN103923634 B CN 103923634B CN 201410190758 A CN201410190758 A CN 201410190758A CN 103923634 B CN103923634 B CN 103923634B
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- mutual solvent
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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
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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
- C09K8/602—Compositions for stimulating production by acting on the underground formation containing surfactants
- C09K8/604—Polymeric surfactants
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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
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/885—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
Abstract
The invention provides a kind of microemulsion mutual solvent for oil well acidation, be made up of the component of following mass percent: sorbitan fatty acid ester 8 ~ 12%, alkylol amide 6 ~ 10%, polyethenoxy ether class tensio-active agent 14 ~ 22%, zwitterionics 10 ~ 20%, low-carbon alcohol 6 ~ 18% and water 30% ~ 45%, wherein said polyethenoxy ether class tensio-active agent is selected from fatty alcohol-polyoxyethylene ether, a kind of in alkylphenol polyoxyethylene and sorbitan fatty acid ester Soxylat A 25-7, described zwitterionics is betaine type amphoteric ionic surface active agent or imidazoline type zwitterionics.Microemulsion mutual solvent of the present invention, all can keep homogeneous transparent from room temperature to 90 DEG C, and only containing a small amount of low-carbon alcohol, flash-point, higher than 40 DEG C, can not burn or explode, and can meet the requirement that oilfield safety is produced, microemulsion mutual solvent preparation technology of the present invention is simple, and raw material is easy to get, with low cost.
Description
Technical field
The present invention relates to a kind of chemical agent for acidification of oil field, in particular for the microemulsion mutual solvent of oil well acidation.
Background technology
The external dependence degree of China's oil and Sweet natural gas is increasing, and the exploitation of China's oil-gas field generally enters the middle and later periods, needs more and more to adopt acidification, with the corrosion such as hydrochloric acid, hydrofluoric acid rock stratum, increases the flow capacity of oil gas, reaches the object of volume increase.For improving acidizing effect, often need mutual solvent be added, both can dissolving acid, again can dissolving oil.Current mutual solvent is be made up of organic solvent substantially, there is the shortcoming that flash-point is low, inflammable and explosive, and use cost is high.
Summary of the invention
For above-mentioned technical problem, the object of the present invention is to provide a kind of microemulsion mutual solvent for oil well acidation.Microemulsion, refer to the transparent or semitransparent dispersion system be made up of water, oil, tensio-active agent etc., the size of disperse phase particle, below 0.1 micron, is generally Nano grade.Under appropriate proportioning, can all form transparent thermodynamic stable system with acid and oil.Consider that the subsurface temperature of oil well is higher, this microemulsion system must keep stable in a larger temperature range, general requirement its between normal temperature to 90 DEG C, all can keep homogeneous transparent, this has higher requirement to this microemulsion system.
Technical scheme of the present invention is:
A kind of microemulsion mutual solvent for oil well acidation, be made up of the component of following mass percent: sorbitan fatty acid ester 8 ~ 12%, alkylol amide 6 ~ 10%, polyethenoxy ether class tensio-active agent 14 ~ 22%, zwitterionics 10 ~ 20%, low-carbon alcohol 6 ~ 18% and water 30% ~ 45%, wherein said polyethenoxy ether class tensio-active agent is selected from fatty alcohol-polyoxyethylene ether, a kind of in alkylphenol polyoxyethylene and sorbitan fatty acid ester Soxylat A 25-7, described zwitterionics is betaine type amphoteric ionic surface active agent or imidazoline type zwitterionics.
The present invention is used for the microemulsion mutual solvent of oil well acidation, wherein be made up of the component of following mass percent: sorbitan fatty acid ester 10 ~ 12%, alkylol amide 8 ~ 10%, polyethenoxy ether class tensio-active agent 15 ~ 20%, zwitterionics 12 ~ 17%, low-carbon alcohol 8 ~ 14% and water 37% ~ 40%.
The present invention is used for the microemulsion mutual solvent of oil well acidation, wherein said betaine type amphoteric ionic surface active agent is selected from alkyl betaine, alkylamide propyl-betaine and alkyl hydroxy sultaine a kind of, and described imidazoline type zwitterionics is alkyl imidazoline.
The present invention is used for the microemulsion mutual solvent of oil well acidation, wherein said alkyl betaine is empgen BB, described alkylamide propyl-betaine is lauroylamidopropyl betaine, described alkyl hydroxy sultaine is dodecyl hydroxyl sulfo betaine, and described alkyl imidazoline is lauryl imidazoline.
The present invention is used for the microemulsion mutual solvent of oil well acidation, and wherein said sorbitan fatty acid ester is selected from anhydrous sorbitol laurate or sorbitan monooleate.
The present invention is used for the microemulsion mutual solvent of oil well acidation, and wherein said alkylol amide is selected from oleic acid diethyl amide or lauric acid diethyl amide.
The present invention is used for the microemulsion mutual solvent of oil well acidation, wherein said fatty alcohol-polyoxyethylene ether is Dodecyl Polyoxyethylene Ether, described alkylphenol polyoxyethylene is polyoxyethylene nonylphenol ether, and described sorbitan fatty acid ester Soxylat A 25-7 is Sorbitan polyoxyethylenated alcohol laurate.
The present invention is used for the microemulsion mutual solvent of oil well acidation, and wherein said low-carbon alcohol is selected from ethanol, Virahol and propyl carbinol a kind of.
The present invention is used for the microemulsion mutual solvent of oil well acidation, formulated in proportion primarily of sorbitan fatty acid ester, alkylol amide, polyethenoxy ether class tensio-active agent, zwitterionics, low-carbon (LC) alcohol and water, microemulsion mutual solvent of the present invention all can keep homogeneous transparent from room temperature to 90 DEG C, and microemulsion mutual solvent of the present invention is only containing a small amount of low-carbon alcohol, flash-point is higher than 40 DEG C, can not burn or explode, the requirement that oilfield safety is produced can be met, microemulsion mutual solvent preparation technology of the present invention is simple, raw material is easy to get, with low cost.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described:
Embodiment 1. 1 kinds is for the microemulsion mutual solvent of oil well acidation, be made up of the component of following mass percent: anhydrous sorbitol laurate 10%, Dodecyl Polyoxyethylene Ether 22%, oleic acid diethyl amide 8%, lauroylamidopropyl betaine 12%, ethanol 8% and water 40%.
The preparation method that the present embodiment is used for the microemulsion mutual solvent of oil well acidation is: by above-mentioned mass percent by anhydrous sorbitol laurate 10%, Dodecyl Polyoxyethylene Ether 22%, oleic acid diethyl amide 8%, lauroylamidopropyl betaine 12%, ethanol 8% and water 40% join in container successively at ambient temperature and are uniformly mixed, and can obtain homogeneous transparent faint yellow microemulsion mutual solvent product.
Embodiment 2. 1 kinds is for the microemulsion mutual solvent of oil well acidation, be made up of the component of following mass percent: sorbitan monooleate 12%, Sorbitan polyoxyethylenated alcohol laurate 20%, oleic acid diethyl amide 10%, empgen BB 11%, Virahol 10% and water 37%.
The preparation method that the present embodiment is used for the microemulsion mutual solvent of oil well acidation is: prepare raw material by proportioning, at ambient temperature by sorbitan monooleate, Sorbitan polyoxyethylenated alcohol laurate, oleic acid diethyl amide, empgen BB, isopropyl alcohol and water joins in container successively and is uniformly mixed, and can obtain homogeneous transparent faint yellow microemulsion mutual solvent product.
Embodiment 3. 1 kinds is for the microemulsion mutual solvent of oil well acidation, be made up of the component of following mass percent: sorbitan monooleate 11%, polyoxyethylene nonylphenol ether 21%, oleic acid diethyl amide 9%, lauryl imidazoline 10%, propyl carbinol 9% and water 40%.
The present embodiment is used for the preparation method of the microemulsion mutual solvent of oil well acidation: prepare raw material by proportioning, at ambient temperature by sorbitan monooleate, polyoxyethylene nonylphenol ether, oleic acid diethyl amide, lauryl imidazoline, propyl carbinol and water join in container successively and are uniformly mixed, and can obtain homogeneous transparent faint yellow microemulsion mutual solvent product.
Embodiment 4. 1 kinds is for the microemulsion mutual solvent of oil well acidation, be made up of the component of following mass percent: anhydrous sorbitol laurate 8%, Dodecyl Polyoxyethylene Ether 15%, lauric acid diethyl amide 8%, dodecyl hydroxyl sulfo betaine 17%, ethanol 14% and water 38%.
The present embodiment is used for the preparation method of the microemulsion mutual solvent of oil well acidation: prepare raw material by proportioning, at ambient temperature by anhydrous sorbitol laurate, Dodecyl Polyoxyethylene Ether, lauric acid diethyl amide, dodecyl hydroxyl sulfo betaine, second alcohol and water joins in container successively and is uniformly mixed, and can obtain homogeneous transparent faint yellow microemulsion mutual solvent product.
Embodiment 5. 1 kinds is for the microemulsion mutual solvent of oil well acidation, be made up of the component of following mass percent: anhydrous sorbitol laurate 9%, Sorbitan polyoxyethylenated alcohol laurate 14%, lauric acid diethyl amide 6%, dodecyl hydroxyl sulfo betaine 20%, ethanol 6% and water 45%.
The present embodiment is used for the preparation method of the microemulsion mutual solvent of oil well acidation: prepare raw material by proportioning, at ambient temperature by anhydrous sorbitol laurate, Sorbitan polyoxyethylenated alcohol laurate, lauric acid diethyl amide, dodecyl hydroxyl sulfo betaine, second alcohol and water joins in container successively and is uniformly mixed, and can obtain homogeneous transparent faint yellow microemulsion mutual solvent product.
Embodiment 6. 1 kinds is for the microemulsion mutual solvent of oil well acidation, be made up of the component of following mass percent: anhydrous sorbitol laurate 9%, polyoxyethylene nonylphenol ether 18%, oleic acid diethyl amide 10%, lauryl imidazoline 15%, ethanol 18% and water 30%.
The present embodiment is used for the preparation method of the microemulsion mutual solvent of oil well acidation: prepare raw material by proportioning, at ambient temperature by anhydrous sorbitol laurate, polyoxyethylene nonylphenol ether, oleic acid diethyl amide, lauryl imidazoline, second alcohol and water joins in container successively and is uniformly mixed, and can obtain homogeneous transparent faint yellow microemulsion mutual solvent product.
Embodiment 7. embodiment of the present invention product microemulsion mutual solvent performance evaluation:
(1) measure the flash-point of embodiment of the present invention product microemulsion mutual solvent by GB/T261, measurement result is in table 1.
(2) embodiment of the present invention product microemulsion mutual solvent mutual solubility performances evaluation method in oil field is: take 40 grams of mutual solvents, add 5 milliliters of hydrochloric acid (concentration is 30%) and 5 milliliters of diesel oil, whether be placed in 90 DEG C of water bath with thermostatic control constant temperature 4h, observing mixed solution has layering and the phenomenon such as precipitation, muddiness.
Table 1 embodiment product microemulsion mutual solvent performance evaluation table
| Sequence number | Formula | Flash-point (DEG C) | Mutual solubility evaluation result |
| 1 | Embodiment 1 | 52 | Keep transparent |
| 2 | Embodiment 2 | 49 | Keep transparent |
| 3 | Embodiment 3 | 53 | Keep transparent |
| 4 | Embodiment 4 | 48 | Keep transparent |
| 5 | Embodiment 5 | 54 | Keep transparent |
| 6 | Embodiment 6 | 43 | Keep transparent |
Table 1 Evaluation results shows, embodiment of the present invention product microemulsion mutual solvent all can keep homogeneous transparent from room temperature to 90 DEG C, and flash-point is higher than 40 DEG C, can not burn or explode, and can meet the requirement that oilfield safety is produced.
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (7)
1. the microemulsion mutual solvent for oil well acidation, it is characterized in that, be made up of the component of following mass percent: sorbitan fatty acid ester 8 ~ 12%, alkylol amide 6 ~ 10%, polyethenoxy ether class tensio-active agent 14 ~ 22%, zwitterionics 10 ~ 20%, low-carbon alcohol 6 ~ 18% and water 30% ~ 45%, wherein said polyethenoxy ether class tensio-active agent is selected from fatty alcohol-polyoxyethylene ether, a kind of in alkylphenol polyoxyethylene and sorbitan fatty acid ester Soxylat A 25-7, described zwitterionics is betaine type amphoteric ionic surface active agent or imidazoline type zwitterionics, described alkylol amide is selected from oleic acid diethyl amide or lauric acid diethyl amide.
2. according to claim 1 for the microemulsion mutual solvent of oil well acidation, it is characterized in that, be made up of the component of following mass percent: sorbitan fatty acid ester 10 ~ 12%, alkylol amide 8 ~ 10%, polyethenoxy ether class tensio-active agent 15 ~ 20%, zwitterionics 12 ~ 17%, low-carbon alcohol 8 ~ 14% and water 37% ~ 40%.
3. according to claim 1 for the microemulsion mutual solvent of oil well acidation, it is characterized in that: described betaine type amphoteric ionic surface active agent is selected from alkyl betaine, alkylamide propyl-betaine and alkyl hydroxy sultaine a kind of, and described imidazoline type zwitterionics is alkyl imidazoline.
4. according to claim 3 for the microemulsion mutual solvent of oil well acidation, it is characterized in that: described alkyl betaine is empgen BB, described alkylamide propyl-betaine is lauroylamidopropyl betaine, described alkyl hydroxy sultaine is dodecyl hydroxyl sulfo betaine, and described alkyl imidazoline is lauryl imidazoline.
5. according to claim 1 or 2 for the microemulsion mutual solvent of oil well acidation, it is characterized in that: described sorbitan fatty acid ester is selected from anhydrous sorbitol laurate or sorbitan monooleate.
6. according to claim 1 for the microemulsion mutual solvent of oil well acidation, it is characterized in that: described fatty alcohol-polyoxyethylene ether is Dodecyl Polyoxyethylene Ether, described alkylphenol polyoxyethylene is polyoxyethylene nonylphenol ether, and described sorbitan fatty acid ester Soxylat A 25-7 is Sorbitan polyoxyethylenated alcohol laurate.
7. according to claim 1 or 2 for the microemulsion mutual solvent of oil well acidation, it is characterized in that: described low-carbon alcohol to be selected from ethanol, Virahol and propyl carbinol a kind of.
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| CN201410190758.6A CN103923634B (en) | 2014-05-07 | 2014-05-07 | A kind of microemulsion mutual solvent for oil well acidation |
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| CN104745154A (en) * | 2015-04-08 | 2015-07-01 | 广汉市福客科技有限公司 | High-temperature-resistant degradable fatty acid derivative type integral emulsifier and preparation method thereof |
| CN105062433A (en) * | 2015-07-17 | 2015-11-18 | 山东大学 | Micro-emulsion applicable to reservoir damage removal and preparation method of micro-emulsion |
| CN109666473A (en) * | 2017-10-17 | 2019-04-23 | 中国石油化工股份有限公司 | Surfactant binary built flooding method |
| CN109666474B (en) * | 2017-10-17 | 2021-10-01 | 中国石油化工股份有限公司 | Surfactant binary compound system with ultralow oil-water interfacial tension |
| CN108300528A (en) * | 2018-02-09 | 2018-07-20 | 张可池 | A kind of heavy-oil emulsifying agent and preparation method thereof |
| CN109762543A (en) * | 2019-02-20 | 2019-05-17 | 中国石油大学(华东) | A kind of heat-resistant salt-resistant is from Tackified emulsion work-in-progress control diversion agent and preparation method thereof |
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| CN101633837A (en) * | 2009-06-10 | 2010-01-27 | 山东东方华龙工贸集团有限公司 | Polymer flooding oil-water separation agent and preparation method thereof |
| CN101809115A (en) * | 2007-07-03 | 2010-08-18 | 贝克休斯公司 | Single phase microemulsions and in situ microemulsions for cleaning formation damage |
| CN102076809A (en) * | 2008-06-26 | 2011-05-25 | 贝克休斯公司 | Method for changing wettability of rock formations |
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| US8871695B2 (en) * | 2007-04-25 | 2014-10-28 | Baker Hughes Incorporated | In situ microemulsions used as spacer fluids |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101809115A (en) * | 2007-07-03 | 2010-08-18 | 贝克休斯公司 | Single phase microemulsions and in situ microemulsions for cleaning formation damage |
| CN102076809A (en) * | 2008-06-26 | 2011-05-25 | 贝克休斯公司 | Method for changing wettability of rock formations |
| CN101633837A (en) * | 2009-06-10 | 2010-01-27 | 山东东方华龙工贸集团有限公司 | Polymer flooding oil-water separation agent and preparation method thereof |
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