Rock Mechanical Characteristics and Fracturing Suggestions of Shale Oil Reservoir

Songliao basin is rich in shale oil resources. However, there is little research on the mechanical characteristics and development technology of shallow shale oil reservoir. Through the study and analysis of the density distribution and rock mechanical characteristics of 13 groups of core samples from 4 wells in the shallow shale oil reservoir in Songliao Basin, it is found that the shallow shale oil reservoir in the basin has low density and belongs to the soft shale with general compaction in mechanics. High density interlayer exists locally. High elasticity in shale and strong brittleness. Large Poisson’s ratio in shale and strong deformation capacity. The strength is grade D and belongs to low strength rock. Good shearing property. According to the test core formation, the fracturing analysis and suggestions are put forward, that is, the development of oil shale horizontal well has certain advantages, and the segmented fracturing technology of horizontal well is the key to the successful development of shallow shale oil. The clear water fracturing fluid or slippery hydraulic fracturing fluid should be selected, and the optimization and performance evaluation of other main agents are completed.