Exploration and Practice of Volume Fracturing Technology of Shale Oil in Dagang Oilfield

Based on the geological characteristics of shale oil in Kong 2 Member Cangdong Sag, Dagang Oilfield, and a large number core experiments numerical simulations, displacement single-stage liquid volume fracturing construction were simulated optimized; stratigraphic stratified mixed shale, reverse mixing mode is adopted, that is, gel used for rock-breaking seam, then low-concentration low-damage fluid system to form complex seam net. Finally, high-conductivity-producing area near well formed by addition sand gel, forming personalized horizontal well-cut technology Oilfield. The application this shows output stable after dense cutting fracturing, industrial development can be realized. Microseismic electric field monitoring confirmed formation network cracks, achieved significant yield-increasing effects, providing reference efficient exploration China's continental oil.