Method for testing influence of dosage of thick oil emulsifying viscosity reducer on viscosity reducing effect

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 [0001] The invention relates to a test method for the influence of the added amount of a viscous oil emulsifying agent on the viscosity-reducing effect. Background technique [0002] As the availability of conventional oil is decreasing day by day, heavy oil is becoming an important energy source for mankind in the next century. After more than 20 years of hard work, the global heavy oil industry has developed faster than conventional oil. The annual output of heavy oil and tar sands has increased from 20 million tons to nearly 100 million tons, and its importance has attracted increasing attention. The difficulty of heavy oil reservoir development is mainly manifested in two aspects: on the one hand, the viscosity of heavy oil is high, and the seepage resistance of heavy oil in the oil layer is large, so that the heavy oil cannot flow from the reservoir to the bottom of the well; on the other hand, even in the reservoir Under certain conditions, the heavy o...

AI Technical Summary

Problems solved by technology

However, the currently used emulsifying viscosity reducers only have a single temperature-resistant or mineral-salt-resistant performance, that is, the research and development of temperature-resistant and mineral-salt-resistant emulsified viscosity reducers is still rare.

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