CN103497751A - High-efficiency air foam oil displacement system - Google Patents
High-efficiency air foam oil displacement system Download PDFInfo
- Publication number
- CN103497751A CN103497751A CN201310476967.2A CN201310476967A CN103497751A CN 103497751 A CN103497751 A CN 103497751A CN 201310476967 A CN201310476967 A CN 201310476967A CN 103497751 A CN103497751 A CN 103497751A
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- CN
- China
- Prior art keywords
- glycine
- air foam
- trimethyl
- oil
- displacement system
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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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
Abstract
The invention provides a high-efficiency air foam oil displacement system. The high-efficiency air foam oil displacement system is characterized in that the high-efficiency air foam oil displacement system is prepared by return water of oilfields, and is prepared by the following raw materials in percent by mass: 0.12% of perfluorocarbon 101005 foaming agents, 0.08% of dodecyl phosphate hydroxypropyl betaine, 0.1% of surfactant BS betaine, and the balance partially hydrolyzed polyacrylamide. The oil displacement system has excellent adaptation on high-salinity and high-oil sewage returned from the oilfields, is high in compatibility, high in salt tolerance and excellent in foaming characteristic and stability; a displacement section can be effectively adjusted; interfacial tension is reduced; swept volume is increased; and recovery efficiency of the oilfields is improved.
Description
Technical field
The present invention relates to can be used for improving the air foam flooding system of oil recovery rate, particularly a kind of highly effective air foam flooding system that is applicable to hyposmosis, high salinity oil field.
Background technology
Often there is reservoir contradiction in oilfield development process, as crack, the contour existence of oozing passage of macropore cause the poor permeability distance between reservoir inside or reservoir larger.Waterflooding is that domestic and international oil field is commonly used and effective a kind of production technique, to improving oil recovery rate, plays vital effect.But due to the existence of above-mentioned reservoir heterogeneity, cause the sweep efficiency of conventional water drive often lower, affect the water flooding effect.And air foam flooding shaft is the high speed seepage channels such as shutoff crack, macropore, improve mobility ratio, enlarge swept volume, improve the effective measure of oil recovery factor.But for hyposmosis, high salinity oil field, the performance of air foam flooding system is had higher requirement, especially its whipability, stability and salt tolerance and oil-proofness etc., therefore need over-all properties to show good flooding system formula.
Summary of the invention
The purpose of this invention is to provide a kind of highly effective air foam flooding system that is applicable to hyposmosis, high salinity oil field transfer drive raising recovery ratio (is called for short: YCQP-1).This flooding system has extraordinary adaptability to the high salinity of oil field re-injection, high oily(waste)water, and compatibleness is good, and saline-alkaline tolerance is strong, whipability and stability are superior, can effectively adjust the displacement section, reduce interfacial tension, enlarge swept volume, improve oil recovery rate.
For achieving the above object, the technical solution used in the present invention is as follows: a kind of highly effective air foam flooding system, it is characterized in that: formulated by oil field recharged waste water, wherein by following mass percent preparation: fluorine carbon 101005 pore forming materials 0.12%, dodecyl hydroxypropyl phosphoric acid ester trimethyl-glycine 0.08%, surfactant B S trimethyl-glycine 0.1%, remain as partially hydrolyzed polyacrylamide.
Described dodecyl hydroxypropyl phosphoric acid ester trimethyl-glycine mass concentration is 45%; Surfactant B S trimethyl-glycine mass concentration is 30%, and the partially hydrolyzed polyacrylamide mass concentration is 1500mg/L.
The relative molecular mass of described partially hydrolyzed polyacrylamide is 1600 * 10
4, solid content is 90.2%.
In this flooding system process for preparation, to fluorine carbon 101005 pore forming materials, the priority addition sequence of dodecyl hydroxypropyl phosphoric acid ester trimethyl-glycine and surfactant B S trimethyl-glycine does not require.
The composite mechanism of this foam flooding system: oil saturation is on No. 101005(2, fluorine carbon) the lathering property impact little, but can affect larger on its foam stability; On the contrary, oil saturation can affect not quite the foam stability of dodecyl hydroxypropyl phosphoric acid ester trimethyl-glycine, and larger on its whipability impact, therefore the two is carried out to composite whipability and the foam stability that can guarantee flooding system.Simultaneously, add partially hydrolyzed polyacrylamide, the viscosity that can increase system increases film thickness and the film elasticity of foam, further to increase the stability of foam.Add the BS trimethyl-glycine can effectively reduce interface tension force, further improve oil displacement efficiency.
Advantage of the present invention and beneficial effect are: 1, compatibleness is good, and salt resistance is strong, and the high salinity sewage of oil field re-injection is had to good adaptability; 2, oil-proofness is good, and under oil saturation 30% condition, the foam aggregative index can reach 5462 when vapour-liquid ratio 3:1; 3, interfacial tension is low, and oil water interfacial tension can reach 3.83 * 10
-2mN/m; 4, can effectively improve disadvantageous mobility ratio and channelling phenomenon, improve sweep efficiency, the simulation in parallel of indoor two pipe improves recovery ratio more than 15%.5, it is abundant that pore forming material is manufactured raw material, and the supply source of goods is extensive, can industrial applications.
Below by embodiment, technical scheme of the present invention is described in further detail, but not as a limitation of the invention.
Embodiment
Embodiment 1
The present invention realizes in the following ways:
Under 30 ℃ of conditions, with the Yanchang Oilfield sewage filtered, partially hydrolyzed polyacrylamide HPAM dispersion, dissolving are mixed with to the solution 100mL that mass concentration is 1500mg/L, then add No. 101005(2, the fluorine carbon that mass percent is 0.12%) pore forming material, add the dodecyl hydroxypropyl phosphoric acid ester trimethyl-glycine that mass percent is 0.08%, add the BS trimethyl-glycine that mass percent is 0.1%.
Finally in the compound system aqueous solution, add 30mL oil field dewatered oil to simulate the oil reservoir displacement condition that in the oil reservoir hole, residual oil saturation is 30%.Above-mentioned air foam system performance is tested and shown, this system has good compatibleness, and the foam aggregative index can reach 5462 when vapour-liquid ratio 3:1, and oil water interfacial tension reaches 3.83 * 10
-2mN/m.
No. 101005(2, the fluorine carbon by name of commodity wherein) pore forming material can directly be bought in Shanghai Ying Zheng company; The mass concentration of dodecyl hydroxypropyl phosphoric acid ester trimethyl-glycine is 45%, can directly buy in Shanghai Nuo Song company; The mass concentration of surfactant B S trimethyl-glycine is 30%, can be reached by market; Partially hydrolyzed polyacrylamide (HPAM) is derived from Daqing Refinery company and produces, and its relative molecular mass is 1600 * 10
4, solid content is 90.2%.
Embodiment 2
The present invention realizes in the following ways:
Under 30 ℃ of conditions, with the Yanchang Oilfield sewage filtered, partially hydrolyzed polyacrylamide HPAM dispersion, dissolving are mixed with to the solution 100mL that mass concentration is 1500mg/L, then add the dodecyl hydroxypropyl phosphoric acid ester trimethyl-glycine that mass percent is 0.08%, add No. 101005(2, the fluorine carbon that mass percent is 0.12%) pore forming material, refer to numbering No. 2, add the BS trimethyl-glycine that mass percent is 0.1%.
Finally in the compound system aqueous solution, add 30mL oil field dewatered oil to simulate the oil reservoir displacement condition that in the oil reservoir hole, residual oil saturation is 30%.Above-mentioned air foam system performance is tested and shown, this system has good compatibleness, and the foam aggregative index can reach 5462 when vapour-liquid ratio 3:1, and oil water interfacial tension reaches 3.83 * 10
-2mN/m.
Above-mentioned chemical reagent is directly enough from market.
In implementation procedure of the present invention, No. 101005(2, fluorine carbon) pore forming material, the priority addition sequence of dodecyl hydroxypropyl phosphoric acid ester trimethyl-glycine and BS trimethyl-glycine is little to the performance impact of this flooding system, and the process for preparation that adds of random order is all category of the present invention.The foregoing is only most preferred embodiment of the present invention, be not limited to the present invention, all similar replacements of doing within the spirit and principles in the present invention, within all should being included in protection scope of the present invention.
This foam flooding system oil displacement efficiency: experimental study different core permeabilities (300,500 * 10
-3μ m
2) height infiltration rock core and rate of permeation be 10 * 10
-3μ m
2flow in low permeability core form respectively the oil displacement efficiency of two pipe parallel models along with different foam injection rate (0.1,0.2,0.3,0.4PV).
Experiment condition:
Oil for experiment: Simulation of Crude Oil, in the time of 30 ℃, viscosity is 2.6mPas;
Experimental water: simulation oil field stratum sewage, salinity 28000mg/L;
Adopt the highly effective air foam flooding system of embodiment 1;
Foamed gas: air;
Model: two pipes rock core post in parallel, size: 2.5 * 10cm; High permeability rock core: 300,500 * 10
-3μ m
2, Low Permeable Cores: 10 * 10
-3μ m
2.
Displacement of reservoir oil result:
It is 300 * 10 that height oozes the pipe rate of permeation
-3μ m
2rock core in parallel in, while injecting the foam of 0.3PV, hypotonic pipe recovery ratio improvement value is 15.04%; It is 500 * 10 that height oozes the pipe rate of permeation
-3μ m
2in rock core in parallel, while injecting the foam of 0.4PV, hypotonic pipe recovery ratio improvement value is 15.55%, can produce a desired effect.It should be noted that, the large oil reservoir for interlayer difference, or for the oil reservoir that has high permeability, (rate of permeation is greater than 1000 * 10
-3μ m
2), annotating foam needs to take before further profile control measure, adjusts assignment of traffic, makes injection liquid can enter the low permeability pay displacement of reservoir oil, to reach desirable oil displacement efficiency.The effect of embodiment 2 is consistent with embodiment 1, the best results of embodiment 1.
The part that the present embodiment does not describe in detail and english abbreviation belong to the common practise of the industry, can search on the net, here not narration one by one.
Claims (4)
1. a highly effective air foam flooding system, it is characterized in that: formulated by oil field recharged waste water, wherein by following mass percent preparation: fluorine carbon 101005 pore forming materials 0.12%, dodecyl hydroxypropyl phosphoric acid ester trimethyl-glycine 0.08%, surfactant B S trimethyl-glycine 0.1%, remain as partially hydrolyzed polyacrylamide.
2. a kind of highly effective air foam flooding system according to claim 1, it is characterized in that: described dodecyl hydroxypropyl phosphoric acid ester trimethyl-glycine mass concentration is 45%; Surfactant B S trimethyl-glycine mass concentration is 30%, and the partially hydrolyzed polyacrylamide mass concentration is 1500mg/L.
3. a kind of highly effective air foam flooding system according to claim 1, it is characterized in that: the relative molecular mass of described partially hydrolyzed polyacrylamide is 1600 * 10
4, solid content is 90.2%.
4. a kind of highly effective air foam flooding system according to claim 1, it is characterized in that: in this flooding system process for preparation, to fluorine carbon 101005 pore forming materials, the priority addition sequence of dodecyl hydroxypropyl phosphoric acid ester trimethyl-glycine and surfactant B S trimethyl-glycine does not require.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310476967.2A CN103497751A (en) | 2013-10-12 | 2013-10-12 | High-efficiency air foam oil displacement system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310476967.2A CN103497751A (en) | 2013-10-12 | 2013-10-12 | High-efficiency air foam oil displacement system |
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| CN103497751A true CN103497751A (en) | 2014-01-08 |
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|---|---|---|---|
| CN201310476967.2A Pending CN103497751A (en) | 2013-10-12 | 2013-10-12 | High-efficiency air foam oil displacement system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103980873A (en) * | 2014-06-04 | 2014-08-13 | 中国地质大学（北京） | Three-phase foam complex oil flooding system and application thereof |
| CN106281284A (en) * | 2015-06-08 | 2017-01-04 | 中国石油化工股份有限公司 | A kind of foam flooding foaming agent and preparation method thereof |
| CN106609136A (en) * | 2015-10-26 | 2017-05-03 | 中国石油化工股份有限公司 | Fluorocarbon surfactant oil-displacing system, and preparation method thereof |
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| US6439308B1 (en) * | 1998-04-06 | 2002-08-27 | Da Qing Petroleum Administration Bureau | Foam drive method |
| CN1651545A (en) * | 2005-01-07 | 2005-08-10 | 中国石化胜利油田有限公司地质科学研究院 | Method of raising oil deposil erude petroleum recovery ratio |
| CN102140338A (en) * | 2011-01-04 | 2011-08-03 | 中国石油大学(华东) | Fluorocarbon surfactant binary composite foam flooding system |
| CN102516974A (en) * | 2011-12-12 | 2012-06-27 | 中国石油天然气股份有限公司 | Foam profile control agent applicable to oil field in-depth profile control |
| US20120186810A1 (en) * | 2010-12-23 | 2012-07-26 | Manilal Dahanayake | Method for mobility control in oil-bearing carbonate formations |
-
2013
- 2013-10-12 CN CN201310476967.2A patent/CN103497751A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
| US6439308B1 (en) * | 1998-04-06 | 2002-08-27 | Da Qing Petroleum Administration Bureau | Foam drive method |
| CN1651545A (en) * | 2005-01-07 | 2005-08-10 | 中国石化胜利油田有限公司地质科学研究院 | Method of raising oil deposil erude petroleum recovery ratio |
| US20120186810A1 (en) * | 2010-12-23 | 2012-07-26 | Manilal Dahanayake | Method for mobility control in oil-bearing carbonate formations |
| CN102140338A (en) * | 2011-01-04 | 2011-08-03 | 中国石油大学(华东) | Fluorocarbon surfactant binary composite foam flooding system |
| CN102516974A (en) * | 2011-12-12 | 2012-06-27 | 中国石油天然气股份有限公司 | Foam profile control agent applicable to oil field in-depth profile control |
Non-Patent Citations (2)
| Title |
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| 冯晗: "耐油起泡剂筛选及驱油性能评价", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103980873A (en) * | 2014-06-04 | 2014-08-13 | 中国地质大学（北京） | Three-phase foam complex oil flooding system and application thereof |
| CN103980873B (en) * | 2014-06-04 | 2016-11-09 | 中国地质大学（北京） | A kind of three-phase froth composite oil-displacing system and application thereof |
| CN106281284A (en) * | 2015-06-08 | 2017-01-04 | 中国石油化工股份有限公司 | A kind of foam flooding foaming agent and preparation method thereof |
| CN106281284B (en) * | 2015-06-08 | 2018-12-21 | 中国石油化工股份有限公司 | A kind of foam flooding foaming agent and preparation method thereof |
| CN106609136A (en) * | 2015-10-26 | 2017-05-03 | 中国石油化工股份有限公司 | Fluorocarbon surfactant oil-displacing system, and preparation method thereof |
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Application publication date: 20140108 |