Characteristics of Cretaceous reservoir formation in KZ block of Tahe Oilfield
The Cretaceous pass-through wells in KZ block show good production capacity and have certain development potential.However,at present,the potential demonstration of reservoir improvement measures based on single well logging data is lacking of systematic research.Through structural description,fine stra-tigraphic correlation,reservoir distribution characteristics and oil and gas distribution,the results show that the Cretaceous system in KZ block mainly develops faulted-nose traps,"reverse"faults are more likely to form fault-blocked oil and gas reservoirs,micro-amplitude structure controls oil and gas accumulation,and oil and gas reservoir formation modes are isolated fault-controlled,vertical and lateral transport.