Transporting and sealing capacity of fault belt and its controlling on reservoir

According to the inner structure as well as the sealing and transporting capacity of fault belt,it has been concluded that fissures generate well in the upper block of fault belt in petroliferous basin.Well-developed fissures are favorable for petroleum vertical migration and help reservoir form in the upper block.In the lower block of fault belt,fissures do not generate.Horizontal sealing works well and screens petroleum so as to form reservoir.It explains why screened oil pools are widespread in the lower block of antithetic fault and why petroleum leaks in the upper block of consequent fault.