Low-temperature Closed Extraction Technology of Light Hydrocarbons and Its Application in Evaluation of Shale Oil Resource

Abstract

Abstract: It is difficult to extract and condense light hydrocarbons from shale rock owing to their volatility. Organic reagent should be improved so that light hydrocarbons can be extracted and condensed under the low-temperature and closed environment. The soxhlet apparatus and conventional chloroform extraction technology is improved while the experiment technology of rock low-temperature evaporation, condensation, extraction and chromatographic fractionation using chlorofluoromethane as extraction agent is perfected. As a result, the acquired C7+ light hydrocarbon reaches the related technical standards. The evolution relationship for light hydrocarbon correction of chloroform bitumen "A"extracted from the lower Es3 and upper Es4 shale rock in Dongying depression is established by means of the above-stated technology, thus completing quantitative evaluation of the remaining hydrocarbon in shale oil in this area. The low-temperature closed extraction technology not only helps improve acquisition rate of light hydrocarbons from rock but also plays an active role in non-conventional shale oil and gas exploration under high evolution stage.

CLC Number:

Wang Juan. Low-temperature Closed Extraction Technology of Light Hydrocarbons and Its Application in Evaluation of Shale Oil Resource[J]. China Petroleum Exploration, 2015, 20(3): 58-63.

References

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