Reservoir development and entrapment mechanisms for the basal Zubair Formation in Kuwait

The paper presents the reservoir sandstone development associated with the Late Valanginian sequence boundary. Both conventional and unconventional entrapment occurs. The conventional entrapment envisages the presence of top seal and a four way closure structure. Unconventional entrapment can take place where sealing facies impinge against a paleohigh providing vertical as well as lateral seal. The play is assessed at local scale for development and regional scale for exploration purposes. For the former geophysical attributes are used to determine the reservoir distribution. For regional analysis paleodrainage pathways are determined to figure out the possible loci for sandbody development.