CN100366702C - High temperature proof acid-in-oil emulsion in low friction resistance - Google Patents
High temperature proof acid-in-oil emulsion in low friction resistance Download PDFInfo
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- CN100366702C CN100366702C CNB2005100449295A CN200510044929A CN100366702C CN 100366702 C CN100366702 C CN 100366702C CN B2005100449295 A CNB2005100449295 A CN B2005100449295A CN 200510044929 A CN200510044929 A CN 200510044929A CN 100366702 C CN100366702 C CN 100366702C
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- acid
- oil
- high temperature
- friction resistance
- milk sap
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Abstract
The present invention provides a high-temperature resisting acid-in-oil emulsion with low friction resistance, which is composed of the five components according to the proportion: 20% to 40% or 20% of the No. 0 diesel oil, 55% to 80% of the hydrochloric acid of which the concentration is from 15 to 28%, 0.5% to 1.5% of the monoglycolamide oleate phosphate, 0.2% to 0.7% of the petroleum sulfonate and 0.1% to 0.3% of the polymethyl methacrylate. The sum of the components is 100% in the high-temperature resisting acid-in-oil emulsion with low friction resistance. The emulsion supplied by the present invention can be applied to the acidification of a stratum of which the oil layer temperature is less than 210 DEG C, and the friction resistance of the formed emulsified acid is similar to that of viscous acid.
Description
Technical field:
The present invention relates to a kind of chemical agent that is used for acidification of oil field, especially high temperature resistance, the sour milk sap of low frictional resistance oil bag.
Background technology:
Emulsified acid is with acid and oily emulsification and a kind of slow acid solution that makes with suitable emulsifying agent.It both can be mixed with oil/acid type milk sap, also can be mixed with acid/oil type milk sap.What the oil field was commonly used is acid/oil type milk sap.The oil that emulsified acid is used can be crude oil, gasoline, kerosene, diesel oil and aromatic hydrocarbons etc., and acid solution is generally hydrochloric acid or mud acid.
The external patent of the relevant emulsified acid of report the earliest is USP 1922,154, its objective is that alleviating acid corrodes telescopic.Knight proposition in 1967 prepares as emulsifying agent with alkyl alcohol sulfuric ester and Witco 1298 Soft Acid and is used for slow emulsified acid, Fast in 1972 proposes to prepare emulsified acid with a kind of amine salt of Witco 1298 Soft Acid as emulsifying agent, Crowe had prepared the sour milk sap of oily bag with alkylsulphonic acid and alkyl benzene sulphonate (ABS) in 1973, and had proved emulsified acid may command acid liquid loss and obtained darker acid penetration.Two companies of Dowell and Shell Petroleum have released low viscous acid oil emulsion respectively at 1974 and 1975.So far, emulsified acid basically forms as a kind of retarded acid system with deep penetration effect.
Begin emulsified acid from the eighties in 20th century and enter Rapid development stage, successively on the basis of alkyl sulfuric ester, alkylsulphonic acid, formed alkylamine, alkyl phosphate, polyxyethylated alcohol (phenol) ether, alkylamide, cationic emulsifier and amphoterics etc. with the research of emulsifying agent.The fast development of emulsifying agent has promoted the application of emulsified acid, but emulsified acid also exists emulsified acid poor stability and the high two large problems of frictional resistance under hot conditions in using at present.
Summary of the invention:
The objective of the invention is to develop high temperature resistance, the sour milk sap of low frictional resistance oil bag.
The objective of the invention is to realize by following prescription.High temperature resistance, the sour milk sap of low frictional resistance oil bag are made of No. 0 diesel oil, 15%～28% hydrochloric acid, oleic acid single ethanol amide phosphoric acid ester, mahogany acid and 5 kinds of components of polymethylmethacrylate, the mass content of each component is respectively diesel oil No. 0: 15%～28% hydrochloric acid soln 20%～40%: oleic acid single ethanol amide phosphoric acid ester 55%～80%: mahogany acid 0.5%～1.5%: polymethylmethacrylate 0.2%～0.7%: 0.1%～0.3%, and each composition sum is 100% in high temperature resistance, the sour milk sap of low frictional resistance oil bag.
The acting as of main component in high temperature resistance, the sour milk sap of low frictional resistance oil bag:
(1) No. 0 diesel oil
No. 0 diesel oil is that high temperature resistance, low frictional resistance oil wrap one of main component of sour milk sap, and its effect provides the oil phase (external phase) of the sour milk sap of oil bag.
(2) 15%～28% hydrochloric acid
15%～28% hydrochloric acid is one of main component of high temperature resistance, the sour milk sap of low frictional resistance oil bag, and its effect provides the water (disperse phase) of the sour milk sap of oil bag.
(3) oleic acid single ethanol amide phosphoric acid ester
Oleic acid single ethanol amide phosphoric acid ester is one of high temperature acidified main component of wrapping sour emulsifying agent with oil, and structural formula is:
Oleic acid single ethanol amide phosphoric acid ester has good solubility in diesel oil, it mainly acts on is to reduce sour oily interfacial tension, promotes the formation and the true emulsion of milk sap.
(2) mahogany acid
Mahogany acid is one of high temperature acidified main component of wrapping sour emulsifying agent with oil, and structural formula is:
RAr-SO
3H
Mahogany acid has good solubility in diesel oil, it mainly acts on is to reduce sour oily interfacial tension, promotes the formation and the true emulsion of milk sap.
(3) polymethylmethacrylate
Polymethylmethacrylate is one of high temperature acidified main component of wrapping sour emulsifying agent with oil, and structural formula is:
The main effect of polymethylmethacrylate is the viscosity that increases diesel oil, wraps at oil and plays true emulsion in the sour milk sap and reduce the milk sap frictional resistance.
Embodiment:
Describe composition of the present invention and preparation process and performance perameter in detail below in conjunction with embodiment.
(1) main raw material(s) performance requriements
Oleic acid single ethanol amide phosphoric acid ester effective content is greater than 96%;
The mahogany acid effective content is greater than 90%;
The polymethylmethacrylate effective content is greater than 98%.
(2) high temperature resistance, the sour milk sap of low frictional resistance oil bag prepare example and performance perameter
The configuration of oil phase:
To the 1m that has started
3Add No. 0 diesel oil of 300kg in the reactor, be warming up to 85 ℃, add 2kg polymethylmethacrylate powder while stirring, stirring and dissolving 2h adds 10kg oleic acid single ethanol amide phosphoric acid ester and 5kg mahogany acid then while stirring, and cooling is standby behind the stirring 30min.
The configuration of acid solution:
At 1m
3In the enamel reaction still 450kg31% concentrated hydrochloric acid being added water 250kg, to be diluted to 20% concentration standby.
The emulsified acid preparation:
With the oil phase for preparing and acid solution with proportioning pump respectively through the threeway injecting mixer, the emulsified acid after mixing tank emulsification enters sour storage tank, the emulsified acid that is stored in the acid jar constantly circulates with big discharge capacity impeller pump, the maintenance emulsified acid is in flow state all the time.Be exactly high temperature resistance of the present invention, the sour milk sap of low frictional resistance oil bag.The performance perameter of embodiment product sees Table 1, and the emulsified acid systems heat resistance of table 1 explanation the present invention preparation is good, and the coefficient of friction resistance is starkly lower than conventional emulsified acid, and is suitable with gelled acid.
The performance perameter of table 1 embodiment product
| Emulsified acid 1h tells water volume (ml) | The coefficient of friction resistance (kPa/m, 90 ℃) of emulsified acid in 3 oil pipes | Slow rate (%) | |||||
| 90℃ | 120℃ | 150℃ | 210℃ | 3.0m 3/min | 5.0m 3/min | 7.0m 3/min | |
| 0 | 0.2 | 0.6 | 1.2 | 3.3 | 5.4 | 7.6 | 93 |
(3) high temperature acidified working conditions with the sour emulsifying agent of oil bag
Provided by the present inventionly high temperature acidifiedly be with the sour emulsifying agent working conditions of oil bag:
Applicable temperature: 0 ℃～210 ℃;
Be suitable for oil reservoir: limestone and sandstone.
Claims (1)
1. a high temperature resistance, low frictional resistance oil wrap sour milk sap, it is characterized in that constituting by No. 0 diesel oil, 15%～28% hydrochloric acid, oleic acid single ethanol amide phosphoric acid ester, mahogany acid and 5 kinds of components of polymethylmethacrylate, the mass content of each component is respectively diesel oil No. 0: 15%～28% hydrochloric acid soln 20%～40%: oleic acid single ethanol amide phosphoric acid ester 55%～80%: mahogany acid 0.5%～1.5%: polymethylmethacrylate 0.2%～0.7%: 0.1%～0.3%, and each composition sum is 100% in high temperature resistance, the sour milk sap of low frictional resistance oil bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100449295A CN100366702C (en) | 2005-10-18 | 2005-10-18 | High temperature proof acid-in-oil emulsion in low friction resistance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100449295A CN100366702C (en) | 2005-10-18 | 2005-10-18 | High temperature proof acid-in-oil emulsion in low friction resistance |
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| Publication Number | Publication Date |
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| CN1760313A CN1760313A (en) | 2006-04-19 |
| CN100366702C true CN100366702C (en) | 2008-02-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101531891B (en) * | 2009-04-03 | 2011-04-27 | 西南石油大学 | Multifunctional nano-viscosity reduction profile control agent |
Families Citing this family (8)
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|---|---|---|---|---|
| CN103788938B (en) * | 2012-11-02 | 2017-02-08 | 中国石油化工股份有限公司 | Retarded acid for low-permeability sandstone reservoir acidification |
| CN104109527B (en) * | 2013-10-18 | 2017-03-22 | 中国石油化工股份有限公司 | Microemulsified acid solution and preparation method thereof |
| CN104629711A (en) * | 2013-11-08 | 2015-05-20 | 中国石油天然气集团公司 | Slow-speed low-friction acid solution system for acid fracturing |
| CN104629714A (en) * | 2013-11-15 | 2015-05-20 | 中国石油天然气股份有限公司 | Formula and preparation method of high-temperature emulsified acid |
| CN104194767A (en) * | 2014-08-26 | 2014-12-10 | 中国石油集团渤海钻探工程有限公司 | High-temperature-resisting emulsified acid liquid |
| CN104592969B (en) * | 2015-02-17 | 2017-10-20 | 中国石油集团渤海钻探工程有限公司 | Multiple emulsification acid fluid system |
| CN106520098A (en) * | 2015-09-10 | 2017-03-22 | 中国石油化工股份有限公司 | Acidic stuck freeing solution for drilling and preparation method thereof |
| CN109135716A (en) * | 2018-08-22 | 2019-01-04 | 中国石油天然气股份有限公司 | Thickening acid, mixed acid system and method for reducing friction resistance of emulsified acid |
Citations (4)
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|---|---|---|---|---|
| GB1429349A (en) * | 1973-04-12 | 1976-03-24 | Dow Chemical Co | Acidizing composition |
| CN1100130A (en) * | 1993-09-09 | 1995-03-15 | 吉林省油田管理局钻采工艺研究院 | Sensitive oil reservoir acidification treatment fluid |
| RU2236576C1 (en) * | 2003-08-25 | 2004-09-20 | Закрытое акционерное общество "Газтехнология" | Hydrophobic emulsion for treating carbonate formation |
| CN1621485A (en) * | 2003-11-28 | 2005-06-01 | 大港油田集团有限责任公司 | Lower damage acidification system for high temperature carbonate reservoir |
-
2005
- 2005-10-18 CN CNB2005100449295A patent/CN100366702C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1429349A (en) * | 1973-04-12 | 1976-03-24 | Dow Chemical Co | Acidizing composition |
| CN1100130A (en) * | 1993-09-09 | 1995-03-15 | 吉林省油田管理局钻采工艺研究院 | Sensitive oil reservoir acidification treatment fluid |
| RU2236576C1 (en) * | 2003-08-25 | 2004-09-20 | Закрытое акционерное общество "Газтехнология" | Hydrophobic emulsion for treating carbonate formation |
| CN1621485A (en) * | 2003-11-28 | 2005-06-01 | 大港油田集团有限责任公司 | Lower damage acidification system for high temperature carbonate reservoir |
Non-Patent Citations (4)
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| "乳化酸配方及其工艺技术的研究与应用". 石永忠.石油与天然气化工，第4卷第25期. 1996 * |
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| "高浓度乳化酸体系研究与应用". 席建勇.新疆石油学院学报，第3卷第15期. 2003 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101531891B (en) * | 2009-04-03 | 2011-04-27 | 西南石油大学 | Multifunctional nano-viscosity reduction profile control agent |
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| CN1760313A (en) | 2006-04-19 |
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