CN105154045A - Viscous crude oil emulsion phase inversion profile modifying water plugging agent - Google Patents
Viscous crude oil emulsion phase inversion profile modifying water plugging agent Download PDFInfo
- Publication number
- CN105154045A CN105154045A CN201510535437.XA CN201510535437A CN105154045A CN 105154045 A CN105154045 A CN 105154045A CN 201510535437 A CN201510535437 A CN 201510535437A CN 105154045 A CN105154045 A CN 105154045A
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- China
- Prior art keywords
- water
- agent
- viscous crude
- oil
- phase inversion
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Classifications
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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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
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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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/5045—Compositions based on water or polar solvents containing inorganic compounds
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
- E21B33/138—Plastering the borehole wall; Injecting into the formation
Abstract
The invention relates to a viscous crude oil emulsion phase inversion profile modifying water plugging agent and belongs to the field of oilfield chemistry. The viscous crude oil emulsion phase inversion profile modifying water plugging agent is characterized by comprising, by mass, 50 parts of active viscous crude oil, 30 parts of water, 10 parts of limestone powder, 0.5-0.7 part of emulgator, 2-7 parts of phase inversion agent and 0.3-0.7 part of stabilizer. The viscous crude oil harmless to the oil reservoir is taken as a main profile modifying water plugging material and is prepared into water-in-oil type emulsion low in viscosity before being injected into the bottom layer, and the oil-in-water type viscous crude oil emulsion is changed into the water-in-oil type emulsion high in viscosity by the aid of temperature of the stratum and the added phase inversion agent after being injected into the stratum. Since the water plugging agent is added with the stabilizer and limestone flour, the water-in-oil type emulsion entering the stratum is more stable and high in viscosity, and good water-plugging effect on the rock stratum with large gaps is achieved.
Description
Technical field
The present invention relates to a kind of viscous oil emulsion phase-inversion profile control water blockoff agent, belong to field of oilfield chemistry.
Background technology
Viscous crude, as the plugging agent that can reclaim use, as profile-controlling and plugging agent, has the advantage not injuring oil reservoir.In prior art, viscous crude is used as profile-controlling and plugging agent and mainly contains two kinds of mode: Yi Zhongshi, use water-in-oil type emulsifier, added in viscous crude, when injecting stratum and running into water, viscous crude and water and milk can be changed into Water in Oil emulsion, utilize its high viscosity to carry out water blockoff.This kind of method limits to some extent to thick oil viscosity, if viscosity is excessive, it can be made to be difficult to inject stratum.Another kind method is, is first prepared into oil-in-water-type water blockoff, again breakdown of emulsion occurs after injecting stratum, and rely on viscous crude oneself viscosity to carry out water blockoff, its weak point is that water plugging effect is bad.
There is a kind of viscous oil emulsion phase-inversion profile control water blockoff agent in prior art, is by developing a kind of phase inversion agent, is the oil-in-water emulsion that viscosity is lower when injecting, and becomes water-in-oil-type high viscosity milk sap after injecting stratum.But after this kind of method injects stratum, the Water in Oil emulsion less stable of formation, injects the viscosity not high enough rock stratum water plugging effect to large gap when stratum forms the milk sap of water-in-oil-type bad.
Summary of the invention
In order to solve the technical problem mentioned in background technology, the invention provides a kind of novel viscous oil emulsion phase-inversion profile control water blockoff agent, utilize the high temperature in oil well, make the oil-in-water emulsion on injection stratum better can become Water in Oil emulsion with the phase inversion agent added, and, there is good stability, improve viscosity, better to the rock stratum water plugging effect in large gap.
The technical solution that the present invention specifically adopts is:
A kind of viscous oil emulsion phase-inversion profile control water blockoff agent, its raw materials comprises the raw materials such as viscous crude, water, emulsifying agent, phase inversion agent and stablizer.
Concrete proportioning raw materials (mass parts) is:
Active viscous crude 50, water 30, limestone powder 10, emulsifying agent 0.5-0.7, phase inversion agent 2-7 and stablizer 0.3-0.7.
Wherein, emulsifying agent is made up of non-ionic surfactant mixtures such as OP series, TWEEN Series, sodium oleate, valent metal ion soap class emulsifying agent and sulfonate, carboxylate salt, vitriol.Preferred formula is: mixed by the raw material of following weight per-cent: OP-21,30wt% tween-80 of 40wt%, the sodium oleate of 20wt%, the sodium hydroxide of 5wt%, 5wt% carboxylic acid sodium.
Phase inversion agent is made up of the mixture of oil-soluble Surfactant OP series, calcium oleate, high volence metal ion soap class emulsifying agent.Preferred formula is: mixed by the raw material of following weight per-cent: OP-4,10wt% calcium oleate of 80wt%, the calcium hydroxide of 10wt%.
Stablizer is one in asphalt powder, coal dust, wilkinite or its any mixture, and preferred formula is: the wilkinite of 70wt% and 30wt% asphalt powder.。
The preparation method of viscous oil emulsion phase-inversion profile control water blockoff agent is: the water be first viscous crude and the temperature of 100 degrees centigrade by temperature being 70 degrees centigrade mixes by proportioning, adds limestone powder.
Add the emulsifying agent prepared and carry out emulsification, obtain emulsion oil-in-water, in production emulsion oil-in-water, add phase inversion agent composition and stablizer.
Advantage of the present invention is: the petroleum emulsion being first mixed with oil-in-water-type, oil-in-water emulsion viscosity lower one just notes stratum, Water in Oil emulsion is become by the effect oil-in-water emulsion of phase inversion agent and formation temperature after injecting stratum, improve the viscosity of milk sap, can profile control and water plugging be carried out; The stability of milk sap is increased by adding particulate solid powder; By adding limestone powder, when forming Water in Oil emulsion in the earth formation, limestone powder is fully encased by viscous crude, increased viscosity, better to the rock stratum water plugging effect in large gap.
Embodiment
Be further detailed below in conjunction with specific embodiment
Embodiment 1
The raw material (mass parts) that a kind of viscous oil emulsion phase-inversion profile control water blockoff agent adopts is: active viscous crude 50, water 30, limestone powder 10, emulsifying agent 0.5, phase inversion agent 4 and stablizer 0.5.
Emulsifying agent is: OP-21,30wt% tween-80 of 40wt%, the sodium oleate of 20wt%, the sodium hydroxide of 5wt%, 5wt% carboxylic acid sodium.
Phase inversion agent is: OP-4,10wt% calcium oleate of 80wt%, the calcium hydroxide of 10wt%.
Stablizer is: the wilkinite of 70wt% and 30wt% asphalt powder.
Preparation method: the water be first viscous crude and the temperature of 100 degrees centigrade by temperature being 70 degrees centigrade mixes by proportioning.
Add the emulsifying agent prepared and carry out emulsification, obtain emulsion oil-in-water, in production emulsion oil-in-water, add phase inversion agent composition and stablizer.
Claims (4)
1. a viscous oil emulsion phase-inversion profile control water blockoff agent, is characterized in that, comprises the raw material by following proportion by weight: active viscous crude 50, water 30, limestone powder 10, emulsifying agent 0.5-0.7, phase inversion agent 2-7 and stablizer 0.3-0.7.
2. viscous oil emulsion phase-inversion profile control water blockoff agent according to claim 1, it is characterized in that, described emulsifying agent is mixed by the raw material of following weight per-cent: OP-21,30wt% tween-80 of 40wt%, the sodium oleate of 20wt%, the sodium hydroxide of 5wt%, 5wt% carboxylic acid sodium.
3. viscous oil emulsion phase-inversion profile control water blockoff agent according to claim 1, is characterized in that, described phase inversion agent is mixed by the raw material of following weight per-cent: OP-4,10wt% calcium oleate of 80wt%, the calcium hydroxide of 10wt%.
4. viscous oil emulsion phase-inversion profile control water blockoff agent according to claim 1, is characterized in that, described stablizer is mixed by the raw material of following weight per-cent: the wilkinite of 70wt% and 30wt% asphalt powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510535437.XA CN105154045A (en) | 2015-08-27 | 2015-08-27 | Viscous crude oil emulsion phase inversion profile modifying water plugging agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510535437.XA CN105154045A (en) | 2015-08-27 | 2015-08-27 | Viscous crude oil emulsion phase inversion profile modifying water plugging agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105154045A true CN105154045A (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510535437.XA Pending CN105154045A (en) | 2015-08-27 | 2015-08-27 | Viscous crude oil emulsion phase inversion profile modifying water plugging agent |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106433589A (en) * | 2016-09-19 | 2017-02-22 | 中国石油化工股份有限公司 | Emulsion for water plugging of horizontal well and preparation method of emulsion |
| CN106497531A (en) * | 2016-10-20 | 2017-03-15 | 烟台智本知识产权运营管理有限公司 | A kind of water plugging of horizontal well oil-in-water emulsion and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1395024A (en) * | 2002-08-19 | 2003-02-05 | 石油大学(华东) | Viscous oil emulsion phase-inversion profile control water blockoff |
| WO2008024147A1 (en) * | 2006-08-23 | 2008-02-28 | Exxonmobil Upstream Research Company | Composition and method for using waxy oil-external emulsions to modify reservoir permeability profiles |
| CN103965848A (en) * | 2014-04-29 | 2014-08-06 | 中国石油大学(华东) | Composite profile control agent and preparation method thereof |
| CN104212422A (en) * | 2014-08-08 | 2014-12-17 | 左青山 | Heavy oil low cost modified clay-type water shutoff agent and usage method thereof |
-
2015
- 2015-08-27 CN CN201510535437.XA patent/CN105154045A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1395024A (en) * | 2002-08-19 | 2003-02-05 | 石油大学(华东) | Viscous oil emulsion phase-inversion profile control water blockoff |
| WO2008024147A1 (en) * | 2006-08-23 | 2008-02-28 | Exxonmobil Upstream Research Company | Composition and method for using waxy oil-external emulsions to modify reservoir permeability profiles |
| CN103965848A (en) * | 2014-04-29 | 2014-08-06 | 中国石油大学(华东) | Composite profile control agent and preparation method thereof |
| CN104212422A (en) * | 2014-08-08 | 2014-12-17 | 左青山 | Heavy oil low cost modified clay-type water shutoff agent and usage method thereof |
Non-Patent Citations (1)
| Title |
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| 李萍等: "SG1-GD活性稠油调剖剂的现场应用", 《钻采工艺》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106433589A (en) * | 2016-09-19 | 2017-02-22 | 中国石油化工股份有限公司 | Emulsion for water plugging of horizontal well and preparation method of emulsion |
| CN106497531A (en) * | 2016-10-20 | 2017-03-15 | 烟台智本知识产权运营管理有限公司 | A kind of water plugging of horizontal well oil-in-water emulsion and preparation method thereof |
| CN106497531B (en) * | 2016-10-20 | 2020-03-24 | 烟台智本知识产权运营管理有限公司 | Oil-in-water emulsion for water plugging of horizontal well and preparation method thereof |
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Application publication date: 20151216 |