CN105419764A - High-temperature-resistant and high-salinity-resistant furfural extract oil sulphonate system and preparation method thereof - Google Patents
High-temperature-resistant and high-salinity-resistant furfural extract oil sulphonate system and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a high-temperature-resistant and high-salinity-resistant furfural extract oil sulphonate system and a preparation method thereof. The preparation method comprises the following two steps: (1) adding furfural extract oil and 1,2-dichloroethane in a reaction vessel, heating up, starting stirring, dropwise adding concentrated sulfuric acid slowly, dropwise adding a sodium hydroxide solution slowly to neutralize after the concentrated sulfuric acid is added dropwise, carrying out rotary evaporation to remove the 1,2-dichloroethane, drying, adding isopropanol and petroleum ether to carry out extraction, removing unreacted raw materials, evaporating to be dry, removing salt with absolute ethyl alcohol, and evaporating to be dry so as to obtain furfural extract oil sulphonate; and (2) adding the furfural extract oil sulphonate, cetrimonium chloride or dodecyl acid diethanolamide and water in the reaction vessel, and heating up and stirring for 30 minutes to obtain the high-temperature-resistant and high-salinity-resistant furfural extract oil sulphonate system. The furfural extract oil sulphonate system for tertiary oil recovery can reduce tension of an oil-water interface to be ultra-low (below 1*10-2 mN/m) under the conditions of high temperature, high salinity and zero alkali, oil recovery efficiency is improved by above 16.4%, and the high-temperature-resistant and high-salinity-resistant furfural extract oil sulphonate system has a good application prospect in a high-temperature and high-salinity oil reservoir.
Description
Technical field
The present invention relates to a kind of resisting high temperature, high salt furfural extract oil sulfonate systems alone and preparation method thereof.
Background technology
In oil-field development, even if optimal reservoir again, traditional primary oil recovery (utilizing the natural energy of reservoir) and secondary oil recovery (water filling or gas injection etc.) can only the 40%-60% of extraction prime stratum crude oil reserve; If formation condition is undesirable, once with after secondary oil recovery the original oil in place of 80% is even also had to remain in underground.The tertiary oil recovery technology used now, namely exploits by physics or chemical process.Kinds of surfactants both at home and abroad for tertiary oil recovery is a lot, and is that the sulfonated petro-leum of Material synthesis is widely used in tertiary oil recovery with fraction oil of petroleum.But for high temperature, high salinity reservoir, sulfonated petro-leum etc. are poor with the compatibleness on stratum, cannot reach ultra low interfacial tension, and then cannot improve recovery ratio.Meanwhile, current most of flooding system all contains alkali, and formation injury is larger.Therefore, for high temperature, high salinity reservoir, the surface active agent for tertiary oil recovery developing applicable this kind of reservoir condition is significant.
For high temperature, high salinity reservoir, present people mainly adopt and are connected in same molecular structure by good for temperature tolerance anionic group and the good non-ionic group of salt tolerance, can reach heat-resistant salt-resistant effect simultaneously.But due to the complex manufacturing of such anionic and nonionic tensio-active agent, be not suitable for scale operation.Therefore, be badly in need of, for the honest and clean surface active agent for tertiary oil recovery of high temperature, the high salinity reservoir property developed favorable rates, meeting the needs of oilfield exploitation.
Summary of the invention
The present invention relates to a kind of resisting high temperature, high salt furfural extract oil sulfonate systems alone and preparation method thereof.
Main technical schemes of the present invention: resisting high temperature, high salt furfural extract oil sulfonate systems alone, it is characterized in that each constituent mass per-cent is as follows: furfural extract oil sulfonate 10%-50%, palmityl trimethyl ammonium chloride or lauric acid diethyl amide 10%-40%, all the other are water.
Wherein: the raw material (by mass percentage) preparing furfural extract oil sulfonate is: the sodium hydroxide solution 10%-20% of furfural extract oil 10%-30%, vitriol oil 5%-15%, 1,2-ethylene dichloride 40%-70%, 25% mass concentration.
Described furfural extract oil aromatic hydrocarbon content >=45%.
Described furfural extract oil sulfonate systems alone.Its preparation process is divided into following two steps:
(1), the preparation of furfural extract oil sulfonate
Furfural extract oil and 1 is added in reaction vessel, 2-ethylene dichloride, start stirring, be warming up to 40 DEG C-60 DEG C, the slow dropping vitriol oil, controls to drip off for 1 hour, continues reaction 1 hour, last slowly dropping mass concentration is the sodium hydroxide solution of 25%, and in reaction process, the strict temperature of reaction that controls is no more than 70 DEG C.Purify: by the furfural extract oil sulfonate neutralized, revolve and steam removing 1,2-ethylene dichloride, to complete drying, then add Virahol and sherwood oil (volume ratio 1:1) extraction, removing unreacting material, evaporate to dryness.Use dehydrated alcohol desalination again, evaporate to dryness obtains furfural extract oil sulfonate.
(2), the preparation of resisting high temperature, high salt furfural extract oil sulfonate systems alone
Add furfural extract oil sulfonate and palmityl trimethyl ammonium chloride or lauric acid diethyl amide in the reactor, then add water, be warming up to 30-60 DEG C, stir 30 minutes, both resisting high temperature, high salt furfural extract oil sulfonate systems alone.
System of the present invention, has the performances such as excellent high temperature resistant, resistance to high salt, oil water interfacial tension can be reduced to ultralow, and improve recovery ratio more than 16.4%, have a good application prospect.
Embodiment
Embodiment 1:
Furfural extract oil is added in reaction vessels, 1,2-ethylene dichloride, as solvent, stirs, is slowly warming up to 45 DEG C, drip the vitriol oil, control temperature of reaction and be no more than 60 DEG C, react 1 hour, last slowly dropping mass concentration is the sodium hydroxide solution of 25%, obtaining thick furfural extract oil sulfonate, obtaining furfural extract oil sulfonate through revolving the steps such as steaming, Virahol and sherwood oil (volume ratio 1:1) extraction, dehydrated alcohol desalination.Separately get reactor, add 25g furfural extract oil sulfonate, 25g palmityl trimethyl ammonium chloride, 50g water, slowly heat up stirring, is warming up to 45 DEG C, continues stirring 0.5 hour, obtain resisting high temperature, high salt furfural extract oil sulfonate systems alone.Sampling is mixed with the solution of 0.03%, and the interfacial tension recording itself and certain crude oil reaches 1.6 × 10
-3mN/m.Through simulated experiment, this single dose oil displacement surfactant displacement of reservoir oil improves 17.2% than waterflood recovery efficiency factor.
Embodiment 2:
Furfural extract oil is added in reaction vessels, 1,2-ethylene dichloride, as solvent, stirs, slowly be warming up to 60 DEG C, drip the vitriol oil, control temperature of reaction and be no more than 70 DEG C, react 1 hour, last slowly dropping mass concentration is the sodium hydroxide solution of 25%, being neutralized to pH value is 9-10, obtains thick furfural extract oil sulfonate, obtains furfural extract oil sulfonate through revolving the steps such as steaming, Virahol and sherwood oil (volume ratio 1:1) extraction, dehydrated alcohol desalination.Separately get reactor, add 10g furfural extract oil sulfonate, 15g palmityl trimethyl ammonium chloride, 75g water, slowly heat up stirring, is warming up to 45 DEG C, continues stirring 0.5 hour, obtain resisting high temperature, high salt furfural extract oil sulfonate systems alone.Sampling is mixed with the solution of 0.05%, and the interfacial tension recording itself and certain crude oil reaches 2.4 × 10
-3mN/m.Through simulated experiment, this single dose oil displacement surfactant displacement of reservoir oil improves 16.4% than waterflood recovery efficiency factor.
Embodiment 3:
Furfural extract oil is added in reaction vessels, 1,2-ethylene dichloride, as solvent, stirs, slowly be warming up to 50 DEG C, drip the vitriol oil, control temperature of reaction and be no more than 70 DEG C, react 1 hour, last slowly dropping mass concentration is the sodium hydroxide solution of 25%, being neutralized to pH value is 9-10, obtains thick furfural extract oil sulfonate, obtains furfural extract oil sulfonate through revolving the steps such as steaming, Virahol and sherwood oil (volume ratio 1:1) extraction, dehydrated alcohol desalination.Separately get reactor, add 25g furfural extract oil sulfonate, 25g lauric acid diethyl amide, 50g water, slowly heat up stirring, is warming up to 45 DEG C, continues stirring 0.5 hour, obtain resisting high temperature, high salt furfural extract oil sulfonate systems alone.Sampling is mixed with the solution of 0.03%, and the interfacial tension recording itself and certain crude oil reaches 2.6 × 10
-3mN/m.Through simulated experiment, this single dose oil displacement surfactant displacement of reservoir oil improves 18.1% than waterflood recovery efficiency factor.
Embodiment 4:
Furfural extract oil is added in reaction vessels, 1,2-ethylene dichloride, as solvent, stirs, slowly be warming up to 45 DEG C, drip the vitriol oil, control temperature of reaction and be no more than 60 DEG C, react 1 hour, last slowly dropping mass concentration is the sodium hydroxide solution of 25%, being neutralized to pH value is 9-10, obtains thick furfural extract oil sulfonate, obtains furfural extract oil sulfonate through revolving the steps such as steaming, Virahol and sherwood oil (volume ratio 1:1) extraction, dehydrated alcohol desalination.Separately get reactor, add 20g furfural extract oil sulfonate, 10g lauric acid diethyl amide, 70g water, slowly heat up stirring, is warming up to 45 DEG C, continues stirring 0.5 hour, obtain resisting high temperature, high salt furfural extract oil sulfonate systems alone.Sampling is mixed with the solution of 0.05%, and the interfacial tension recording itself and certain crude oil reaches 3.1 × 10
-3mN/m.Through simulated experiment, this single dose oil displacement surfactant displacement of reservoir oil improves 16.5% than waterflood recovery efficiency factor.
Claims (4)
1. a resisting high temperature, high salt furfural extract oil sulfonate systems alone, is characterized in that: each compositions in weight percentage is: furfural extract oil sulfonate 10%-50%, palmityl trimethyl ammonium chloride or lauric acid diethyl amide 10%-40%, and all the other are water.
2. furfural extract oil sulfonate systems alone as claimed in claim 1, is characterized in that: aromaticity content >=45% in furfural extract oil.
3. the preparation method of furfural extract oil sulfonate systems alone as claimed in claim 1, it is characterized in that its preparation process is divided into following two steps: (1), the preparation of furfural extract oil sulfonate: add furfural extract oil and 1 in reaction vessel, 2-ethylene dichloride, heat up, start stirring, the slow dropping vitriol oil, wait to drip, slow dropping sodium hydroxide solution neutralization, in N-process, control temperature is no more than 70 DEG C, revolve and steam removing 1, 2-ethylene dichloride, to complete drying, add Virahol and petroleum ether extraction again, removing unreacting material, evaporate to dryness, use dehydrated alcohol desalination again, evaporate to dryness obtains furfural extract oil sulfonate, (2), the preparation of resisting high temperature, high salt furfural extract oil sulfonate systems alone: add furfural extract oil sulfonate and palmityl trimethyl ammonium chloride or lauric acid diethyl amide in the reactor, add water again, intensification stirring 30 minutes, both obtained resisting high temperature, high salt furfural extract oil sulfonate systems alone.
4. furfural extract oil sulfonate systems alone as claimed in claim 3, it is characterized in that the raw material (by mass percentage) preparing furfural extract oil sulfonate is: the sodium hydroxide solution 10%-20% of furfural extract oil 10%-30%, vitriol oil 5%-15%, 1,2-ethylene dichloride 40%-70%, 25% mass concentration.
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| CN107298971A (en) * | 2016-04-14 | 2017-10-27 | 中国石油化工股份有限公司 | A kind of high temperature resistant heavy alkylbenzene sulfonate system and preparation method thereof |
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Address after: Liuhe District of Nanjing City, Jiangsu province 210048 geguan Road No. 699 Patentee after: China Petroleum & Chemical Corp. Patentee after: SINOPEC NANJING CHEMICAL RESEARCH INSTITUTE Co.,Ltd. Address before: Liuhe District of Nanjing City, Jiangsu province 210048 geguan Road No. 699 Patentee before: China Petroleum & Chemical Corp. Patentee before: Nanhua Group Research Institute |
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