CN104962272A - Foaming agent for tertiary oil recovery and preparation method thereof - Google Patents
Foaming agent for tertiary oil recovery and preparation method thereof Download PDFInfo
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- CN104962272A CN104962272A CN201510317417.5A CN201510317417A CN104962272A CN 104962272 A CN104962272 A CN 104962272A CN 201510317417 A CN201510317417 A CN 201510317417A CN 104962272 A CN104962272 A CN 104962272A
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- oil recovery
- whipping agent
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- tertiary oil
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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
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- Oil, Petroleum & Natural Gas (AREA)
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Abstract
The invention provides a foaming agent for tertiary oil recovery and a preparation method thereof. The foaming agent includes: 30-60% of N-dodecyl-N, N-dimethylglycine; 10-40% of sodium alpha-olefin sulfonate (AOS); 10-40% of carboxymethyl cellulose; and 10-60% of water. The preparation method includes: adding the N-dodecyl-N, N-dimethylglycine and sodium alpha-olefin sulfonate (AOS) involved in the formula into a reaction kettle, conducting stirring and simultaneously adding part of water and sodium carboxymethyl cellulose into the reaction kettle, and performing dissolving, when all components in the reaction kettle are dissloved, adding the remaining amount of water into the reaction kettle, and stirring the mixture evenly to obtain a finished product of foaming agent. The foaming system provided by the invention can well reduce the surface tension under different mineralization degrees, and can lower the interfacial tension of crude oil to 0.5*10<-2>mN/m. Also after 3 months of storage at 80DEG C, the viscosity retention rate is more than 90%, and the foaming agent has very good stability.
Description
Technical field
The present invention relates to technical field of oilfield chemistry, particularly a kind of whipping agent for tertiary oil recovery and preparation method thereof.
Background technology
Whipping agent, also known as foaming agent, makes the material of object material pore-forming exactly, and it can be divided into chemical foaming agent and pneumatogen and tensio-active agent three major types.Chemical foaming agent is that those can discharge the gas such as carbonic acid gas and nitrogen after thermal degradation, and forms the compound of pore in polymkeric substance composition; Pneumatogen is exactly the change that foam pore is the physical aspect by a certain material, is namely formed by the dissolving of the expansion of pressurized gas, the volatilization of liquid or solid; Whipping agent all has higher surfactivity, effectively can reduce the surface tension of liquid, and surrounds air in the electric double layer arrangement of liquid film surface, forms bubble, then forms foam by single isolated bubbles.
Oil production process can be divided into primary oil recovery, secondary oil recovery and tertiary oil recovery.Once all recovered the oil by physical method with secondary oil recovery, its recovery ratio can reach 30% ~ 40%, but has also remained most of crude oil in first and second stratum of recovering the oil.The main oilfield (as grand celebration, triumph, the Liaohe River etc.) of China has entered secondary oil recovery later stage in succession, and in order to improve the recovery ratio in existing oil field, tertiary oil recovery technology obtains increasingly extensive application.Tertiary oil recovery technology can be summarized as four kinds of different types: mixed phase drives, thermal recovery, microorganism drive, chemical flooding.Although external thermal recovery and gas drive are recovered the oil and are entered industrial applications, and achieve good effect.But with regard to Oil Reservoir Types and the state of the art of China, chemical flooding remains the main attack technology that oil recovery is improved in China oil field.Chemical flooding comprises polymer flooding, alkali drives, surfactant flooding, binary combination flooding, ternary composite driving, foam flooding etc.In the research improving oil recovery, foam flooding is more and more subject to people's attention with the seepage characteristic of its uniqueness and Oil Displacing Capacity, foam flooding can improve sweep efficiency significantly, oil displacement efficiency can be improved again, can improve recovery ratio 10 ~ 25% in the ordinary course of things, therefore it is a kind of more rising tertiary oil recovery method.
At present, because foam flooding can realize the remarkable enhancing to tertiary oil recovery rate, whipping agent is more and more widely used, but substantially there is no relevant report for high temperature high salt tolerance foam flooding system, make the mal-condition for high temperature and high salt, substantially not used for the foaming agent of tertiary oil recovery.
Summary of the invention
For current whipping agent Problems existing, the invention provides a kind of whipping agent for tertiary oil recovery, this whipping agent is mainly for the whipping agent of the tertiary oil recovery displacement of reservoir oil for high temperature high salt tolerance.
The technical solution adopted in the present invention is in order to achieve the above object:
For a whipping agent for tertiary oil recovery, it is characterized in that, the mass percent that each component feeds intake as described below,
Be preferably:
The method preparing above-mentioned whipping agent comprises the following steps:
(1) the dodecyl-dimethyl amine second lactone in formula and alpha-olefin sodium sulfonate (AOS) are joined in reactor, add part water and carboxymethyl cellulose while stirring in reactor, dissolved.
(2) heated and stirred, after each component dissolves in question response still, joins in reactor by the water of residual content, stirs and obtain whipping agent finished product.
Compared with prior art, beneficial effect of the present invention is whipping agent of the present invention: belong to pseudoplastic fluid due to aerated fluid and have good visco-elasticity; Under different salinity, foam system all can reduce surface tension preferably, and the interfacial tension lowering of crude oil can be made to 0.5*10
-2mN/m; Simultaneously at high salt concentration, the composite membrane defining certain high strength between tensio-active agent and polymkeric substance, thus substantially increase the stability of foam; After depositing 3 months at 80 DEG C, viscosity conservation rate more than 90%, and still can reduce the interfacial tension of crude oil effectively, and foam system has satisfactory stability.
Embodiment
Following Application Example is described further invention.
Embodiment 1: a kind of whipping agent for tertiary oil recovery, the charging capacity of raw material is:
Dodecyl-dimethyl amine second lactone 40Kg; Alpha-olefin sodium sulfonate (AOS) 20Kg;
Carboxymethyl cellulose 20Kg; Water 20Kg.
The method preparing above-mentioned whipping agent comprises the following steps:
(1) the 40Kg dodecyl-dimethyl amine second lactone in formula and 20Kg alpha-olefin sodium sulfonate (AOS) are joined in reactor, add 10Kg water and 20Kg carboxymethyl cellulose while stirring in reactor, dissolved.
(2) heated and stirred, after each component dissolves in question response still, joins in reactor by residue 10Kg water, stirs and obtain whipping agent finished product.
Embodiment 2: a kind of whipping agent for tertiary oil recovery, the charging capacity of raw material is:
Dodecyl-dimethyl amine second lactone 50Kg; Alpha-olefin sodium sulfonate (AOS) 15Kg;
Carboxymethyl cellulose 15Kg; Water 20Kg.
The method preparing above-mentioned whipping agent comprises the following steps:
(1) the 50Kg dodecyl-dimethyl amine second lactone in formula and 15Kg alpha-olefin sodium sulfonate (AOS) are joined in reactor, add 10Kg water and 15Kg carboxymethyl cellulose while stirring in reactor, dissolved.
(2) heated and stirred, after each component dissolves in question response still, joins in reactor by residue 10Kg water, stirs and obtain whipping agent finished product.
Embodiment 3: a kind of whipping agent for tertiary oil recovery, the charging capacity of raw material is:
Dodecyl-dimethyl amine second lactone 50Kg; Alpha-olefin sodium sulfonate (AOS) 20Kg;
Carboxymethyl cellulose 20Kg; Water 10Kg.
The method preparing above-mentioned whipping agent comprises the following steps:
(1) the 50Kg dodecyl-dimethyl amine second lactone in formula and 20Kg alpha-olefin sodium sulfonate (AOS) are joined in reactor, add 5Kg water and 20Kg carboxymethyl cellulose while stirring in reactor, dissolved.
(2) heated and stirred, after each component dissolves in question response still, joins in reactor by residue 5Kg water, stirs and obtain whipping agent finished product.
Embodiment 4: a kind of whipping agent for tertiary oil recovery, the charging capacity of raw material is:
Dodecyl-dimethyl amine second lactone 30Kg; Alpha-olefin sodium sulfonate (AOS) 30Kg;
Carboxymethyl cellulose 30Kg; Water 10Kg.
The method preparing above-mentioned whipping agent comprises the following steps:
(1) the 30Kg dodecyl-dimethyl amine second lactone in formula and 30Kg alpha-olefin sodium sulfonate (AOS) are joined in reactor, add 5Kg water and 30Kg carboxymethyl cellulose while stirring in reactor, dissolved.
(2) heated and stirred, after each component dissolves in question response still, joins in reactor by residue 5Kg water, stirs and obtain whipping agent finished product.
Embodiment 5: a kind of whipping agent for tertiary oil recovery, the charging capacity of raw material is:
Dodecyl-dimethyl amine second lactone 35Kg; Alpha-olefin sodium sulfonate (AOS) 25Kg;
Carboxymethyl cellulose 25Kg; Water 15Kg.
The method preparing above-mentioned whipping agent comprises the following steps:
(1) the 35Kg dodecyl-dimethyl amine second lactone in formula and 25Kg alpha-olefin sodium sulfonate (AOS) are joined in reactor, add 10Kg water and 25Kg carboxymethyl cellulose while stirring in reactor, dissolved.
(2) heated and stirred, after each component dissolves in question response still, joins in reactor by residue 5Kg water, stirs and obtain whipping agent finished product.
Embodiment 6: a kind of whipping agent for tertiary oil recovery, the charging capacity of raw material is:
Dodecyl-dimethyl amine second lactone 30Kg; Alpha-olefin sodium sulfonate (AOS) 25Kg;
Carboxymethyl cellulose 25Kg; Water 20Kg.
The method preparing above-mentioned whipping agent comprises the following steps:
(1) the 30Kg dodecyl-dimethyl amine second lactone in formula and 25Kg alpha-olefin sodium sulfonate (AOS) are joined in reactor, add 10Kg water and 25Kg carboxymethyl cellulose while stirring in reactor, dissolved.
(2) heated and stirred, after each component dissolves in question response still, joins in reactor by residue 10Kg water, stirs and obtain whipping agent finished product.
The moiety of the whipping agent of above-described embodiment is utilized to do tension force foam compound system shop experiment to Tianjin Dagang Oilfield, its result is: foaming volume is 353 ~ 374mL for (Roche method), transformation period is 60 ~ 78min, and the anti-sodium chloride salt ability of foam system reaches 22x10
4mg/L, the anti-calcium chloride salt ability of foam system reaches 7x10
3mg/L, anti-mixing salt (sodium-chlor and the calcium chloride) ability of foam system reaches 23.5x10
4mg/L; Simultaneously high temperature 80 degree, foam system is put into anti-salt and is not substantially declined, and foam system retention of viscosity is more than 90% simultaneously.
The above is only preferred embodiment of the present invention, not does any pro forma restriction to technical scheme of the present invention.Every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong in the scope of technical scheme of the present invention.
Claims (4)
1. for a whipping agent for tertiary oil recovery, it is characterized in that, the mass percent that each component feeds intake is:
2. a kind of whipping agent for tertiary oil recovery according to claim 1, it is characterized in that, the mass percent that each component feeds intake is:
3. a kind of whipping agent for tertiary oil recovery according to claim 1, it is characterized in that, the mass percent that each component feeds intake is:
4. for a preparation method for the whipping agent of tertiary oil recovery, it is characterized in that, said method comprising the steps of:
(1) the dodecyl-dimethyl amine second lactone in formula and alpha-olefin sodium sulfonate (AOS) are joined in reactor, add part water and Xylo-Mucine while stirring in reactor, dissolved;
(2) heated and stirred, after each component dissolves in question response still, joins in reactor by the water of residual content, stirs and obtain whipping agent finished product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510317417.5A CN104962272A (en) | 2015-06-10 | 2015-06-10 | Foaming agent for tertiary oil recovery and preparation method thereof |
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| CN201510317417.5A CN104962272A (en) | 2015-06-10 | 2015-06-10 | Foaming agent for tertiary oil recovery and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107603583A (en) * | 2017-10-25 | 2018-01-19 | 成都凯米拉科技有限公司 | A kind of high temperature resistant gas well liquid salt resistance foam discharging agent |
| CN107674666A (en) * | 2017-10-25 | 2018-02-09 | 成都凯米拉科技有限公司 | The preparation technology of heat and salinity tolerance foam discharging agent |
| CN110343515A (en) * | 2018-04-03 | 2019-10-18 | 中国石油化工股份有限公司 | Like salt oil displacement agent and combinations thereof and the application in the displacement of reservoir oil of stratum |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086389A (en) * | 2010-12-31 | 2011-06-08 | 上海大学 | Temperature-resistant salt-resistant composite foam oil displacement agent for tertiary oil recovery and preparation method thereof |
| CN102796498A (en) * | 2012-08-28 | 2012-11-28 | 西南石油大学 | Foam drilling fluid |
| CN104265252A (en) * | 2014-08-19 | 2015-01-07 | 中国石油天然气股份有限公司 | Displacement developing method for artificial foamed oil of heavy oil reservoir |
-
2015
- 2015-06-10 CN CN201510317417.5A patent/CN104962272A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086389A (en) * | 2010-12-31 | 2011-06-08 | 上海大学 | Temperature-resistant salt-resistant composite foam oil displacement agent for tertiary oil recovery and preparation method thereof |
| CN102796498A (en) * | 2012-08-28 | 2012-11-28 | 西南石油大学 | Foam drilling fluid |
| CN104265252A (en) * | 2014-08-19 | 2015-01-07 | 中国石油天然气股份有限公司 | Displacement developing method for artificial foamed oil of heavy oil reservoir |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107603583A (en) * | 2017-10-25 | 2018-01-19 | 成都凯米拉科技有限公司 | A kind of high temperature resistant gas well liquid salt resistance foam discharging agent |
| CN107674666A (en) * | 2017-10-25 | 2018-02-09 | 成都凯米拉科技有限公司 | The preparation technology of heat and salinity tolerance foam discharging agent |
| CN110343515A (en) * | 2018-04-03 | 2019-10-18 | 中国石油化工股份有限公司 | Like salt oil displacement agent and combinations thereof and the application in the displacement of reservoir oil of stratum |
| CN110343515B (en) * | 2018-04-03 | 2022-04-12 | 中国石油化工股份有限公司 | Salt-loving oil-displacing agent, composition thereof and application thereof in stratum oil displacement |
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Application publication date: 20151007 |
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