CN103091206A - Method for testing influence of dosage of thick oil emulsifying viscosity reducer on viscosity reducing effect - Google Patents
Method for testing influence of dosage of thick oil emulsifying viscosity reducer on viscosity reducing effect Download PDFInfo
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- CN103091206A CN103091206A CN 201110373979 CN201110373979A CN103091206A CN 103091206 A CN103091206 A CN 103091206A CN 201110373979 CN201110373979 CN 201110373979 CN 201110373979 A CN201110373979 A CN 201110373979A CN 103091206 A CN103091206 A CN 103091206A
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Abstract
The invention discloses a method for testing an influence of the dosage of a thick oil emulsifying viscosity reducer on a viscosity reducing effect. The method comprises the steps of: (a) preparing the thick oil emulsifying viscosity reducer for later use; (b) preparing a thick oil emulsifying viscosity reducer solution; (c) mixing the thick oil with distilled water by a certain ratio to obtain a mixture and testing the viscosity of the mixture in a certain temperature; and (d) adding the thick oil emulsifying viscosity reducer solution, testing the influence of the dosage of the thick oil emulsifying viscosity reducer on the viscosity reducing effect and then obtaining the influence of the dosage on the viscosity reducing effect. By virtue of the method, the influence of the dosage of the thick oil emulsifying viscosity reducer on the viscosity reducing effect can be rapidly tested with high testing accuracy and simple testing steps, additionally the testing cost is reduced greatly, and a theoretical basis is provided for the use of the thick oil emulsifying viscosity reducer.
Description
Technical field
The present invention relates to a kind of emulsifying and viscosity-reducing agent for condensed oil dosage to the method for testing of viscosity reducing effect impact.
Background technology
Along with Gong the utilization of conventional oil reduces day by day, heavy oil is becoming the next century mankind's important energy source.Through the effort of more than 20 years, global heavy oil industry had than conventional oil speed of development faster, and the annual production of viscous crude, tar sand rises to nearly hundred million tons by 2,000 ten thousand tons, and its importance receives people's concern day by day.The difficulty of heavy crude reservoir exploitation is mainly manifested in two aspects: the viscosity of viscous crude is high on the one hand, and the filtrational resistance of viscous crude in oil reservoir is large, makes viscous crude not flow into the shaft bottom from oil reservoir; Even on the other hand under reservoir condition, viscous crude can flow into the shaft bottom, but in the process of vertical lifting, impact due to viscous crude factor such as degassed and radiating and cooling in pit shaft, make the viscosity of viscous crude further increase, have a strong impact on the normal operation of the mobile and oil well production equipment of resident fluid in pit shaft.
According to the interrelated data statistics, explored heavy oil resource mainly concentrates on the states such as Venezuela, USSR (Union of Soviet Socialist Republics), the U.S. and Canada in the world at present.The Orinoco heavy oil belt of Venezuela northeast is examined geologic reserve and is reached more than 3,000 hundred million tons.Half of U.S.'s heavy oil resource is distributed in Gary Fu Niya, nearly 40,000,000,000 tons of geologic reserve, remaining half be distributed in the continent, middle part.Canadian heavy oil resource mainly is distributed in four major sedimentary mineral reserve such as Athabasca, cold air lake, dimension Pascal and this river of Alberta, nearly 1,500 hundred million tons of geologic reserve.The heavy oil resource of USSR (Union of Soviet Socialist Republics) mainly is distributed in more than 200 hundred million tons of the Ba Sainuofuyue in West Siberia basin, comprises that also there is extremely abundant viscous crude resource in other country of China.Total geologic reserve of these heavy oil resources adds up more than 6,000 hundred million tons, and in the world conventional oil verify 3,600 hundred million tons of geologic reserve, its workable reserve is only 90,000,000,000 tons.
The viscous crude stock number that China has found is also very abundant, and existing more than 20 of the viscous crude field of discovery is distributed in the areas such as the Liaohe River, triumph, Xinjiang, huge port, Jilin, more than estimating that Chinese heavy petroleum asphalt stock number can reach 300 * 108t.China's viscous crude (highly viscous oil, viscosity is more than 0.1Pas) resource distribution is very wide, and geologic reserve reaches 164 * 108t, and wherein the land viscous crude accounts for more than 20% of oil total resources.The outstanding characteristics of viscous crude are that bituminous matter, gum level are higher.Colloid, the heavy oil production that asphalt content is higher account for 7% of viscous crude total production.
Connect the area in Daqing oil field, Henan, Inner Mongol two in recent years and found important heavy crude reservoir; Also find the viscous crude resource in areas such as Jianghan Oil-field, little, the Northwest Sichuan of peace.Heavy crude reservoir geologic reserve explored and that control has surpassed national common thin oil reserves, estimates also to have from now on new growth.
In the proven reserves of CNPC, common heavy oil accounts for 74.7%, and special viscous crude accounts for 14.4%, and super viscous crude accounts for 10.9%.
Countries in the world mainly rely on traditional thermal methods to the exploitation of high viscosity heavy oil at present, i.e. steam stimulation and steam flood.The supporting technology that China's great majority adopt steam stimulation and pit shaft to mix thin oil is recovered the oil.This method not only consumes a large amount of fuel, but also consumes a large amount of thin oils, thereby has increased widely cost for oil production.Have bibliographical information can use the Emulsifying heavy crude producing, this method is that water phase surfactant mixture is annotated the down-hole, makes full-bodied viscous crude change low viscous water external emulsion extraction into.Reducing viscosity by emulsifying is high due to its viscosity break ratio, cost is low, easy operating, and at home and abroad all there is use in the oil field at present.But the emulsifying pour depressor that uses at present only possesses single heatproof or anti-rock salt performance, namely heatproof again the emulsifying pour depressor of anti-rock salt research and development also seldom.
Emulsifying and viscosity-reducing agent for condensed oil is in the process of using, and the large young pathbreaker of its dosage directly has influence on the viscosity reducing effect to viscous crude, how to determine a suitable emulsifying and viscosity-reducing agent for condensed oil dosage, and the viscosity reduction that emulsifying and viscosity-reducing agent for condensed oil is applied to viscous crude seems very crucial.
Summary of the invention
The object of the invention is to overcome the shortcoming and defect of above-mentioned prior art, the method of testing of a kind of emulsifying and viscosity-reducing agent for condensed oil dosage on the viscosity reducing effect impact is provided, this method of testing can be made the emulsifying and viscosity-reducing agent for condensed oil dosage to the impact of viscosity reducing effect by Quick Measuring, measuring accuracy is high, testing procedure is simple, greatly reduce testing cost, for the use of emulsifying and viscosity-reducing agent for condensed oil provides theoretical foundation.
Purpose of the present invention is achieved through the following technical solutions: the method for testing of emulsifying and viscosity-reducing agent for condensed oil dosage on the viscosity reducing effect impact comprises the following steps:
(a) the preparation emulsifying and viscosity-reducing agent for condensed oil is standby;
(b) preparation emulsifying and viscosity-reducing agent for condensed oil solution;
(c) viscous crude is mixed according to a certain percentage with distilled water, and measure at a certain temperature its viscosity;
(d) add emulsifying and viscosity-reducing agent for condensed oil solution, investigate the emulsifying and viscosity-reducing agent for condensed oil dosage to the impact of reducing thick oil viscosity effect, thereby draw dosage to the impact of viscosity reducing effect.
Described step (a) comprising:
(a1) condensation reaction of OPEO and formaldehyde;
(a2) sulfonating reaction of co-condensation polymer and the concentrated sulphuric acid;
(a3) neutralization makes emulsifying and viscosity-reducing agent for condensed oil at last.
Described step (a1) comprises the following steps:
(a11) at first, add OPEO in reaction vessel, be warming up to uniform temperature;
(a12) then, add catalyzer, slowly drip formaldehyde, reaction a period of time.
In described step (c), viscous crude mixes according to 7: 3 with distilled water.
In described step (c), measuring temperature is 50 ℃.
In sum, the invention has the beneficial effects as follows: can Quick Measuring make the emulsifying and viscosity-reducing agent for condensed oil dosage to the impact of viscosity reducing effect, measuring accuracy is high, and testing procedure is simple, greatly reduces testing cost, for the use of emulsifying and viscosity-reducing agent for condensed oil provides theoretical foundation.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited only to this.
Embodiment:
The method of testing of the emulsifying and viscosity-reducing agent for condensed oil dosage that the present embodiment relates on the viscosity reducing effect impact comprises the following steps:
(a) the preparation emulsifying and viscosity-reducing agent for condensed oil is standby;
(b) preparation emulsifying and viscosity-reducing agent for condensed oil solution;
(c) viscous crude is mixed according to a certain percentage with distilled water, and measure at a certain temperature its viscosity;
(d) add emulsifying and viscosity-reducing agent for condensed oil solution, investigate the emulsifying and viscosity-reducing agent for condensed oil dosage to the impact of reducing thick oil viscosity effect, thereby draw dosage to the impact of viscosity reducing effect.
Described step (a) comprising:
(a1) condensation reaction of OPEO and formaldehyde;
(a2) sulfonating reaction of co-condensation polymer and the concentrated sulphuric acid;
(a3) neutralization makes emulsifying and viscosity-reducing agent for condensed oil at last.
Described step (a1) comprises the following steps:
(a11) at first, add OPEO in reaction vessel, be warming up to uniform temperature;
(a12) then, add catalyzer, slowly drip formaldehyde, reaction a period of time.
In described step (c), viscous crude mixes according to 7: 3 with distilled water.
In described step (c), measuring temperature is 50 ℃.
As shown in the table by the result that said method records:
As seen from the above table: along with the increase of emulsifying and viscosity-reducing agent for condensed oil dosage, also along with increase, when dosage only was 0.2wt%, viscosity break ratio can reach 92.1%, illustrated that the emulsifying and viscosity-reducing agent for condensed oil viscosity reducing effect is remarkable to the viscosity break ratio of viscous crude; 24h deposition dehydrating rate reduces (54%～28%) along with the increase of emulsifying and viscosity-reducing agent for condensed oil content, water-oil emulsion stability strengthens.
The above is only preferred embodiment of the present invention, is not the present invention is done any pro forma restriction, and every foundation technical spirit of the present invention, any simple modification, equivalent variations that above embodiment is done are within all falling into protection scope of the present invention.
Claims (5)
1. the method for testing of emulsifying and viscosity-reducing agent for condensed oil dosage on the viscosity reducing effect impact, is characterized in that, comprises the following steps:
(a) the preparation emulsifying and viscosity-reducing agent for condensed oil is standby;
(b) preparation emulsifying and viscosity-reducing agent for condensed oil solution;
(c) viscous crude is mixed according to a certain percentage with distilled water, and measure at a certain temperature its viscosity;
(d) add emulsifying and viscosity-reducing agent for condensed oil solution, investigate the emulsifying and viscosity-reducing agent for condensed oil dosage to the impact of reducing thick oil viscosity effect, thereby draw dosage to the impact of viscosity reducing effect.
2. the method for testing of emulsifying and viscosity-reducing agent for condensed oil dosage according to claim 1 on the viscosity reducing effect impact, is characterized in that, described step (a) comprising:
(a1) condensation reaction of OPEO and formaldehyde;
(a2) sulfonating reaction of co-condensation polymer and the concentrated sulphuric acid;
(a3) neutralization makes emulsifying and viscosity-reducing agent for condensed oil at last.
3. the method for testing of emulsifying and viscosity-reducing agent for condensed oil dosage according to claim 2 on the viscosity reducing effect impact, is characterized in that, described step (a1) comprises the following steps:
(a11) at first, add OPEO in reaction vessel, be warming up to uniform temperature;
(a12) then, add catalyzer, slowly drip formaldehyde, reaction a period of time.
4. the method for testing of emulsifying and viscosity-reducing agent for condensed oil dosage according to claim 1 on the viscosity reducing effect impact, is characterized in that, in described step (c), viscous crude mixes according to 7: 3 with distilled water.
5. the method for testing of emulsifying and viscosity-reducing agent for condensed oil dosage according to claim 1 on the viscosity reducing effect impact, is characterized in that, in described step (c), measuring temperature is 50 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110373979 CN103091206A (en) | 2011-11-07 | 2011-11-07 | Method for testing influence of dosage of thick oil emulsifying viscosity reducer on viscosity reducing effect |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110373979 CN103091206A (en) | 2011-11-07 | 2011-11-07 | Method for testing influence of dosage of thick oil emulsifying viscosity reducer on viscosity reducing effect |
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| CN103091206A true CN103091206A (en) | 2013-05-08 |
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| CN 201110373979 Pending CN103091206A (en) | 2011-11-07 | 2011-11-07 | Method for testing influence of dosage of thick oil emulsifying viscosity reducer on viscosity reducing effect |
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Application publication date: 20130508 |