1887

Abstract

Summary

The proportion of shale oil in different occurrence states is closely associated with its fluidity. This paper establishes a quantitative evaluation model for shale oil in different occurrence states, serving as an effective tool for basin-level assessment of resource abundance. The pore characterization experiment and molecular dynamics simulation are combined. The specific surface area is used as a link to apply the microscopic molecular dynamics simulation adsorption results to the macroscopic geological conditions. As maturity progresses, the content of kerogen swelling oil decreases due to the reduction in kerogen mass. Simultaneously, the content of kerogen adsorbed oil and mineral adsorbed oil increase. In the advanced stage of maturity, the compaction process leads to a decline in both organic and inorganic pore connectivity, resulting in a continuous decrease in the volumes of free oil within these pores. The proportion of free oil is used as the mobility coefficient. The product of the movable coefficient, pyrolysis parameter S1, TOC, rock density, and source rock thickness is used as the contour map of the movable resource intensity. The dessert of movable shale oil content is mainly concentrated in the middle of the Dan terrace and Qijiagulong sag.

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/content/papers/10.3997/2214-4609.202335026
2023-11-27
2025-12-09
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References

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