Optimization and application of differentiated stimulation method for deep sandstone reservoirs
The deep sandstone and gravel reservoir Has a complex internal structure,with a dense reservoir and strong Heterogeneity.During the Hydraulic fracturing process,there are complex fracture extension phenomena such as twisting around gravel,passing through gravel,etc.The conventional sand injection Hydraulic fracturing Has poor production effect.For the difficulties in Hydraulic fracturing of the deep sandstone and gravel reservoir in Zhanggu12 block,such as the development of faults,complex rock types,and large differences in physical properties,through the optimization of differential combination of fracture network reservoir modification technology for different well areas,combined with the supporting technologies of composite plugging,pulse injection,and efficient placement of proppants,on-site tests were conducted and good results were achieved,providing a good reference for the efficient development of deep sandstone and gravel reservoirs on land.