Numerical simulation of fracture propagation in the whole well stage of multi-cluster fracturing of horizontal wells in shale oil reservoirs:a case study of Shahejie Formation in Jiyang Depression
The quantity of Paleogene shale oil resource in Jiyang Depression is 4.05 billion tons,showing good exploration and development prospects.However,the shale oil reservoir has deep burial,complex structure and strong heterogeneity,and the law of hydraulic fracturing fracture propagation in shale oil reservoir is not clear.To accurately predict the hydraulic fracturing fracture propagation morpgology,a fluid-solid coupling model of fracture propagation based on dimensionless approximate solution was established.According to the geological engineering characteristics of shale oil reservoir in Jiyang Depression,the fracture propagation of a typical shale oil horizontal well was simulated,and the microseismic and tracer monitoring results were compared with the simulated results.The results showed that the overall trend of the simulated fracture length is basically the same as that of the microseismic fracture length.The similarity between simulation results and tracer monitoring results are higher than that of microseismic monitoring results.Especially in some well sections,the tracer results and microseismic results are highly consistent with simulated results.The study can provide guidance for the fracturing method design of shale oil reservoir in Jiyang Depression.
NETL
NSTL
万方数据
