«Proceedings of Gubkin University»

Aspects of interaction of solvents with different polarity and components of organic matter of Bazhenov formation rocks

UDC: 622.276.4:622.276.6
DOI: 10.33285/2073-9028-2023-2(311)-143-155

Authors:

¹ National University of Oil and Gas “Gubkin University”, Moscow, Russian Federation

Keywords: Bazhenov formation, kerogen, bitumoid, extraction, organic solvents, solvent’s polarity, oil recovery, reservoir properties, rock composition

Annotation:

One of the unique characteristics of Bazhenov formation is the presence of organic content in rocks composition, represented by kerogen, bitumoid and oil. These occur as rock-forming components and inclusions at different forms and state in the pore space. The review of scientific and technical literature indicates complexity and strong differentiation of rock structure, reservoir composition due to organic components presence, and, therefore, the impossibility of using traditional methods for oil recovery. An advanced technology for Bazhenov formation is use of organic solvents which increases the mobility of soluble organic components and their desorption from rock surface. The paper presents an analysis of the studies of extraction of rocks organic part by organic solvents with different polarity. It is established that the solvent structure affects the composition of extracted organic components. According to different publications, it is necessary to use solvents with different polarity, which promote more complete extraction of hydrocarbon components. The expediency of developing process fluids based on organic solvents for influencing the mineral matrix of rocks and the components of organic matter is shown.

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