Characterization of reservoir units in the third member of Shahejie Formation of Wanzhuang area,Langgu Sag,North China
To address the low level of exploration and development and the immature understanding of reser-voir unit elements of the third member of Shahejie Formation(Ess3)in Wanzhuang area of Langgu Sag,so as to pro-mote the evaluation of hydrocarbon reservoirs and production establishment,a comprehensive method of combining logging interpretation conclusion data,oil test and production dynamics data was adopted for studying the reservoir units in detail.By organizing the distribution and structural characteristics of sandy bodies and analyzing the con-nectivity among individual reservoir unit,the boundaries of the reservoir units were redefined and the favorable de-velopmental units of hydrocarbon reservoirs were clarified.The research results indicate that the study area can be vertically divided into 12 sets of unit systems.Among them,the reservoir units of the lower series of Es32 are mainly developed in blocks T12,Q56,T47,and Q87.Reservoir units mainly concentrate in block T12.There are more reservoir units in upper Es33,while there are less in lower Es33.Generally,the reservoir units of each block are still primarily controlled by structures,with faults playing a significant role in shielding.In addition,the coopera-tion of channel sand bodies and faults can also form many structural-lithologic traps,which are favorable locations for the formation of reservoirs.
Es3reservoir unitLanggu Sagsand body distributionWanzhuang area
万方数据
维普
