Exploration potential planar partitioning method and device for lacustrine facies shale oil

Abstract

The invention provides an exploration potential planar partitioning method and device for lacustrine facies shale oil. The exploration potential planar partitioning method comprises the steps that thecontent of hydrocarbon generation components in a target shale oil formation, the hydrocarbon yield of the hydrocarbon generation components at all evolution stages, the organic matter abundance, crude oil density, shale porosity and shale invalid porosity of the target shale oil formation, the age of deposition of oil groups in the target shale oil formation and structure contour data, corresponding to the age of deposition, of the target shale oil formation are obtained; the oil production volume of shale in unit mass is calculated; maturity partitions of the target shale oil formation aredetermined; the diagenesis index, the horizontal stress index and the vertical stress index are calculated; then the cumulative structure complexity index is calculated; structure partitions of the target shale oil formation are determined; and exploration potential planar partitions of the target shale oil formation are determined according to the maturity partitions and the structure partitions.According to the exploration potential planar partitioning method, the exploration potential evaluating precision of the lacustrine facies shale oil is improved, and an evaluation result is closer tothe underground real state.

Description

technical field

[0001] The invention relates to the technical field of petroleum exploration, in particular to a method and a device for subdividing the exploration potential plane of lacustrine shale oil. Background technique

[0002] Shale oil is an important type of unconventional oil and gas resources. It is the oil resources contained in shale-dominated shale formations, including oil in shale pores and fractures, and clastic rocks or carbonate rocks. Petroleum in adjacent and interlayer layers. In recent years, major breakthroughs have been made in several continental shale oil blocks, showing good industrial prospects. Among them, the continental lake basin has the characteristics of complex structure, diverse depositional environment, complex shale composition, rapid lithology change, and diverse organic matter components.

[0003] Shale is a source rock with certain storage performance, and has the characteristics of source-reservoir integration. The generated oil...

Images