CN1204680A - High temp. chemical viscosity reducing agent for crude oil - Google Patents
High temp. chemical viscosity reducing agent for crude oil Download PDFInfo
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- CN1204680A CN1204680A CN 97105954 CN97105954A CN1204680A CN 1204680 A CN1204680 A CN 1204680A CN 97105954 CN97105954 CN 97105954 CN 97105954 A CN97105954 A CN 97105954A CN 1204680 A CN1204680 A CN 1204680A
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Abstract
A high-temp chemical viscosity reducer for crude oil is prepared from sodium dodecylbenzenesulfonate (29-45 wt.%), sodium oleate (5-16), alkylphenol ethoxylates (30-40) and alkaline assitant (10-20). Its process for reducing viscosity of crude oil includes mixing its 0.5-0.9% aqueous solution with crude oil in weight ratio of 3 : 7, heating them in enclosed steel sylinder at 300 deg.C for 48 hr, and cooling to room temp. to obtain 90% of viscosity-reducing rate. Its advantages are high resistance to high temp (300 deg.C), salt, alkali and hard water, broad spectrum, low cost and no environmental pollution.
Description
The present invention relates to a kind of composition that reduces viscosity of thickened oil, more specifically to a kind of composition that reduces viscosity of thickened oil by emulsification.
The heavy oil reserves of now having verified China Liaohe Oil Field, oil field, triumph arc east etc. reaches several ten million tons, almost can not exploit these viscous crude with ordinary method, adopting chemical agent viscosity reduction method is one of RECENT DEVELOPMENTS viscous oil recovery new technology of getting up, has less investment, cost is low, the efficient height, advantage such as easy to use.But existing many viscosity-depression agents only are used for viscosity reduction under the normal temperature, when meeting stratum high-temperature, or because of the milk sap of viscosity-depression agent decomposition or viscosity-depression agent and crude oil formation causes viscosity-depression agent to lose efficacy easily transition, do not reach the requirement of oil recovery.
The object of the present invention is to provide a kind of novel crude oil pyrochemistry viscosity-depression agent, it can remedy the above-mentioned deficiency of existing viscosity-depression agent.
Viscosity-depression agent of the present invention is characterized in that being made up of Sodium dodecylbenzene sulfonate, alkylphenol polyoxyethylene, sodium oleate and base agent, and their weight percentage is respectively 29～45,30～40,5～16 and 10～20.
300 ℃ of high temperature of viscosity-depression agent ability of the present invention, salt tolerant, alkali and hard water, suitable viscous crude kind is wide, and viscosity reducing effect is good, and is cheap, the no three wastes, is suitable for producing in batches, produces and uses all very convenient.
Below by embodiment the present invention is described.
Embodiment 1 takes by weighing Sodium dodecylbenzene sulfonate 2.1 grams, OP-10 (belonging to the alkylphenol polyoxyethylene tensio-active agent) 1.8 grams, sodium oleate 0.4 gram, base agent 0.7 gram, is viscosity-depression agent of the present invention after stirring.This is a kind of mashed prod.During actual the use with its aqueous solution of 5～9 ‰, after promptly in this mashed prod, adding entry to 1000 and restraining, stir again, dissolve fully, it and viscosity 10 * 10
4The Liaohe Oil Field viscous crude of mPaS adds in the withstand voltage resistant to elevated temperatures airtight steel cylinder together by 3: 7 weight ratio, is heated to 300 ℃ in retort furnace, keeps being chilled to room temperature after 48 hours, and recording viscosity number is 20mPaS, and viscosity break ratio is 99.98%.
Embodiment 2 takes by weighing Sodium dodecylbenzene sulfonate 3.3 grams, TX-10 (also belonging to the alkylphenol polyoxyethylene tensio-active agent) 3.3 grams, sodium oleate 0.7 gram, base agent 0.9 gram, after stirring, add 1000 gram water dilutions, again after stirring again, dissolving fully, is it and viscosity that the viscous crude in the oil field, triumph arc east of 70000mPaS mixes by 3: 7 weight ratio, repeat the operation of embodiment 1, survey its viscosity and be about 20mPS, viscosity break ratio is 99.97%.
Claims (1)
1. a crude oil pyrochemistry viscosity-depression agent is characterized in that being made up of Sodium dodecylbenzene sulfonate, alkylphenol polyoxyethylene, sodium oleate and base agent, and their weight percentage is respectively 29～45,30～40,5～16 and 10～20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97105954A CN1091133C (en) | 1997-07-05 | 1997-07-05 | High temp. chemical viscosity reducing agent for crude oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97105954A CN1091133C (en) | 1997-07-05 | 1997-07-05 | High temp. chemical viscosity reducing agent for crude oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1204680A true CN1204680A (en) | 1999-01-13 |
| CN1091133C CN1091133C (en) | 2002-09-18 |
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ID=5168240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97105954A Expired - Fee Related CN1091133C (en) | 1997-07-05 | 1997-07-05 | High temp. chemical viscosity reducing agent for crude oil |
Country Status (1)
| Country | Link |
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| CN (1) | CN1091133C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1297625C (en) * | 2004-05-08 | 2007-01-31 | 刘玉勤 | Chemical adjuvant for heavy crude oil extraction and its uses |
| CN100436564C (en) * | 2005-12-22 | 2008-11-26 | 新疆三精德润科技有限公司 | Temperature-resistant viscosity-reducing agent for boring fluid |
| CN101092558B (en) * | 2007-07-20 | 2011-06-22 | 于毅 | Viscosity reducting, de-waxing, deoiling auxiliary agent in use for extracting petroleum, and preparation method |
| CN102618245A (en) * | 2012-03-07 | 2012-08-01 | 董其宏 | Novel emulsified viscosity reduction agent |
| CN111205843A (en) * | 2019-06-18 | 2020-05-29 | 中国石油大学(北京) | Thick oil viscosity reducer, preparation method and use method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1037727A (en) * | 1988-05-16 | 1989-12-06 | 辛勇 | Pour point depressant for crude oil |
| CN1025680C (en) * | 1992-04-03 | 1994-08-17 | 山东大学 | Viscosity decreasing ayent for high-consistency crude oil |
| CN1093099A (en) * | 1994-03-25 | 1994-10-05 | 辽河石油勘探局钻采工艺研究院 | Viscosity depressant for high-viscosity crude oil and preparation thereof, using method |
-
1997
- 1997-07-05 CN CN97105954A patent/CN1091133C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1297625C (en) * | 2004-05-08 | 2007-01-31 | 刘玉勤 | Chemical adjuvant for heavy crude oil extraction and its uses |
| CN100436564C (en) * | 2005-12-22 | 2008-11-26 | 新疆三精德润科技有限公司 | Temperature-resistant viscosity-reducing agent for boring fluid |
| CN101092558B (en) * | 2007-07-20 | 2011-06-22 | 于毅 | Viscosity reducting, de-waxing, deoiling auxiliary agent in use for extracting petroleum, and preparation method |
| CN102618245A (en) * | 2012-03-07 | 2012-08-01 | 董其宏 | Novel emulsified viscosity reduction agent |
| CN111205843A (en) * | 2019-06-18 | 2020-05-29 | 中国石油大学(北京) | Thick oil viscosity reducer, preparation method and use method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1091133C (en) | 2002-09-18 |
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