CN102399577A - Chemical settling dehydration method for thick oil transition zone ageing oil - Google Patents
Chemical settling dehydration method for thick oil transition zone ageing oil Download PDFInfo
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- CN102399577A CN102399577A CN2011102959033A CN201110295903A CN102399577A CN 102399577 A CN102399577 A CN 102399577A CN 2011102959033 A CN2011102959033 A CN 2011102959033A CN 201110295903 A CN201110295903 A CN 201110295903A CN 102399577 A CN102399577 A CN 102399577A
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Abstract
The invention relates to the technical field of thick oil ageing oil, in particular to a chemical settling dehydration method for thick oil transition zone ageing oil. The method comprises the following steps of: (1) preparing a novel emulsion breaker; (2) preparing an additive; and (3) performing settling dehydration: preheating the ageing oil to the temperature of between 75 and 85 DEG C, adding 300 to 400 mg/L of novel emulsion breaker and 0.5 to 1.2 percent of additive into the ageing oil, fully mixing, settling for 8 to 12 hours, extracting the upper middle dehydrated oil sample, and measuring the water content of the purified oil. By the method, the transition zone ageing oil generated in thick oil production is dehydrated, and the water content of the dehydrated and purified transition zone ageing oil meets the requirement of less than 5 percent. The method overcomes the defect of vicious circle because the water is easily deteriorated and the deteriorated water is recovered by a sewage oil recovery system during operation in the conventional method.
Description
Technical field:
The present invention relates to a kind of viscous crude ageing oil technical field, particularly a kind of viscous crude transitional zone ageing oil thermo-chemical setting dihydration method.
Background technology:
The ageing oil treatment system is all had in the big oil field of ageing oil intractability in western countries, and treatment process is generally high temperature dehydration+flash-evaporation dehydration.Ageing oil after the processing gets into the processed oil system.High for asphalt content, the chemical treatment difficulty big and do not have contaminated crude oil, adopts that to pave the way after the nature weathering be the approach that ageing oil is used.
At home; The ageing oil phenomenon in oil field just produced in processes such as crude production, collection be defeated in recent years; Be to follow the progressively exploitation of DP technology and the adding of various organic medicaments to form, ageing oil phenomenon that domestic researchist reports the earliest and treatment process beginning are shown in the eighties of last century the nineties.The Oilfield using high temperature circulation that has constantly reclaims non-oil in water emulsion wherein, reduces the volume of ageing oil; The Oilfield using that has is with methods such as ageing oil natural subsidence in hold-up vessel concentrate, but the final puzzlement that all can't break away from ageing oil, and these methods only limit to the lower place of output.The oil field that also has turns back to the production separation system with ageing oil, and a part of ageing oil wherein can get into production separation water system, makes water quality deterioration.Water quality after the deterioration is regained by the sewage oil recovery system, returns the sewage slurry tank again and causes vicious cycle.
Summary of the invention:
The technical problem that the present invention will solve provides a kind of viscous crude transitional zone ageing oil thermo-chemical setting dihydration method; This method has realized the transitional zone ageing oil that produces in the viscous crude production is carried out processed, makes the transitional zone ageing oil take off after oil water ratio simultaneously and satisfies the requirement less than 5%.Overcome existing method and when operation, be prone to make water quality deterioration, the water quality after the deterioration is regained by the sewage oil recovery system, returns the deficiency that the sewage slurry tank causes vicious cycle again.
The technical scheme that the present invention taked is: a kind of viscous crude transitional zone ageing oil thermo-chemical setting dihydration method, and the step of this method is following:
(1) prepares novel emulsion splitter: be initiator with the Ucar 35; With the propylene oxide addition reaction, generate Ucar 35 polypropylene ether intermediate product earlier, and then and reacting ethylene oxide; Generate Ucar 35 polyethers polyether type demulsifying agent; With the Ucar 35 polyethers is raw material, adopts vinylformic acid and maleic anhydride nitration mixture to carry out esterification, and reaction product is novel emulsion splitter; Its molecular formula is:
(2) preparation additive: the mass ratio of each moity of additive is: low-molecular polypropylene acid amides: polyquaternium: RH-893: HEDP=1: 1～5: 1～2: 1～2;
(3) deposition dehydrating: ageing oil is preheated to 75 ℃～85 ℃, in ageing oil, adds novel emulsion splitter 300mg/L～400mg/L, additive 0.5%～1.2%, thorough mixing, sedimentation 8hr～12hr extracts middle and upper part dehydration oil sample, measures water cut in purified.
The invention has the beneficial effects as follows: the present invention has been owing to adopted emulsion splitter has been carried out modification, and the synthesizing new emulsion splitter makes novel emulsion splitter have higher wetting, infiltration, broken viscous crude W/O milk sap ability; Owing to prepared additive, made additive have the ability of broken O/W and complicated milk sap; Owing to adopted the mode that in ageing oil, adds emulsion splitter, additive, thereby had advantage simple to operate, that treatment effect good, flexibility good, water cut in purified is low, oil content of wastewater is low, flow process is short, equipment is few.
Embodiment:
A kind of viscous crude transitional zone ageing oil thermo-chemical setting dihydration method, the step of this method is following:
(1) prepares novel emulsion splitter: be initiator with the Ucar 35; With the propylene oxide addition reaction, generate Ucar 35 polypropylene ether intermediate product earlier, and then and reacting ethylene oxide; Generate Ucar 35 polyethers polyether type demulsifying agent; With the Ucar 35 polyethers is raw material, adopts vinylformic acid and maleic anhydride nitration mixture to carry out esterification, and reaction product is novel emulsion splitter; Its molecular formula is:
(2) preparation additive: the mass ratio of each moity of additive is: low-molecular polypropylene acid amides: polyquaternium: RH-893: HEDP=1: 1～5: 1～2: 1～2;
(3) deposition dehydrating: ageing oil is preheated to 75 ℃～85 ℃; In ageing oil, add novel emulsion splitter 400mg/L, additive 1.2%, thorough mixing, sedimentation 8hr～12hr; Extract middle and upper part dehydration oil sample; Measure water cut in purified, water cut in purified can reach≤and 5%, deviate from oil content of wastewater≤2000mg/L.
It is understandable that; More than about specific descriptions of the present invention; Only be used to the present invention is described and be not to be subject to the described technical scheme of the embodiment of the invention; Those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the present invention, to reach identical technique effect; As long as satisfy the use needs, all within protection scope of the present invention.
Claims (1)
1. viscous crude transitional zone ageing oil thermo-chemical setting dihydration method, it is characterized in that: the step of this method is following:
(1) prepares novel emulsion splitter: be initiator with the Ucar 35; With the propylene oxide addition reaction, generate Ucar 35 polypropylene ether intermediate product earlier, and then and reacting ethylene oxide; Generate Ucar 35 polyethers polyether type demulsifying agent; With the Ucar 35 polyethers is raw material, adopts vinylformic acid and maleic anhydride nitration mixture to carry out esterification, and reaction product is novel emulsion splitter; Its molecular formula is:
(2) preparation additive: the mass ratio of each moity of additive is: low-molecular polypropylene acid amides: polyquaternium: RH-893: HEDP=1: 1～5: 1～2: 1～2;
(3) deposition dehydrating: ageing oil is preheated to 75 ℃～85 ℃, in ageing oil, adds novel emulsion splitter 300mg/L～400mg/L, additive 0.5%～1.2%, thorough mixing, sedimentation 8hr～12hr extracts middle and upper part dehydration oil sample, measures water cut in purified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011102959033A CN102399577A (en) | 2011-09-28 | 2011-09-28 | Chemical settling dehydration method for thick oil transition zone ageing oil |
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| CN2011102959033A CN102399577A (en) | 2011-09-28 | 2011-09-28 | Chemical settling dehydration method for thick oil transition zone ageing oil |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103666541A (en) * | 2013-12-03 | 2014-03-26 | 沃太能源南通有限公司 | Crude oil deemulsifier and preparation method thereof |
| CN103666542A (en) * | 2013-12-10 | 2014-03-26 | 天津亿利科能源科技发展股份有限公司 | Ageing oil demulsifier and preparation method thereof |
| CN104194822A (en) * | 2014-09-04 | 2014-12-10 | 中国海洋石油总公司 | Cross-linked nonionic polyether crude oil demulsifier and preparation method thereof |
| CN105800733A (en) * | 2016-03-22 | 2016-07-27 | 武汉理工大学 | Inorganic and organic compound demulsifying agent and preparation and application method thereof |
| CN111662745A (en) * | 2020-04-28 | 2020-09-15 | 德仕能源科技集团股份有限公司 | Sulfonate demulsifier for crude oil three-recovery produced liquid and preparation method thereof |
| CN111717960A (en) * | 2019-03-22 | 2020-09-29 | 中国石油天然气股份有限公司 | Oily sewage compound type reverse demulsifier and application thereof |
| CN116333779A (en) * | 2021-12-22 | 2023-06-27 | 中国石油化工股份有限公司 | Thickened oil dehydration method and dehydration system |
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| US5661220A (en) * | 1993-08-10 | 1997-08-26 | Basf Aktiengesellschaft | Reaction products of olefinically unsaturated carboxylic acids and polyetherols and their use as demulsifiers for crude oil emulsions |
| CN1223896A (en) * | 1998-01-21 | 1999-07-28 | 辽河石油勘探局勘察设计研究院 | Crude de-emulsifier and its preparing process |
| CN101352667A (en) * | 2007-07-26 | 2009-01-28 | 中国石油化工股份有限公司 | Demulsifying agent and preparation method and use thereof |
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- 2011-09-28 CN CN2011102959033A patent/CN102399577A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5661220A (en) * | 1993-08-10 | 1997-08-26 | Basf Aktiengesellschaft | Reaction products of olefinically unsaturated carboxylic acids and polyetherols and their use as demulsifiers for crude oil emulsions |
| CN1223896A (en) * | 1998-01-21 | 1999-07-28 | 辽河石油勘探局勘察设计研究院 | Crude de-emulsifier and its preparing process |
| CN101352667A (en) * | 2007-07-26 | 2009-01-28 | 中国石油化工股份有限公司 | Demulsifying agent and preparation method and use thereof |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103666541A (en) * | 2013-12-03 | 2014-03-26 | 沃太能源南通有限公司 | Crude oil deemulsifier and preparation method thereof |
| CN103666541B (en) * | 2013-12-03 | 2015-09-30 | 北京易斯普罗石油工程技术有限公司 | A kind of crude oil demulsifier and preparation method thereof |
| CN103666542A (en) * | 2013-12-10 | 2014-03-26 | 天津亿利科能源科技发展股份有限公司 | Ageing oil demulsifier and preparation method thereof |
| CN103666542B (en) * | 2013-12-10 | 2015-09-16 | 天津亿利科能源科技发展股份有限公司 | A kind of ageing oil emulsion splitter and preparation method thereof |
| CN104194822A (en) * | 2014-09-04 | 2014-12-10 | 中国海洋石油总公司 | Cross-linked nonionic polyether crude oil demulsifier and preparation method thereof |
| CN104194822B (en) * | 2014-09-04 | 2015-11-18 | 中国海洋石油总公司 | A kind of cross-linking type nonionic polyoxyalkylene crude oil demulsifier and preparation method thereof |
| CN105800733A (en) * | 2016-03-22 | 2016-07-27 | 武汉理工大学 | Inorganic and organic compound demulsifying agent and preparation and application method thereof |
| CN111717960A (en) * | 2019-03-22 | 2020-09-29 | 中国石油天然气股份有限公司 | Oily sewage compound type reverse demulsifier and application thereof |
| CN111717960B (en) * | 2019-03-22 | 2022-06-03 | 中国石油天然气股份有限公司 | Oily sewage compound type reverse demulsifier and application thereof |
| CN111662745A (en) * | 2020-04-28 | 2020-09-15 | 德仕能源科技集团股份有限公司 | Sulfonate demulsifier for crude oil three-recovery produced liquid and preparation method thereof |
| CN116333779A (en) * | 2021-12-22 | 2023-06-27 | 中国石油化工股份有限公司 | Thickened oil dehydration method and dehydration system |
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Application publication date: 20120404 |