model-restricting technique is to evaluate carbonate reservoirs with rich micro-scanner and acoustic imaging logging data which is able to provide visual images of vugs in the reservoir after deep laterolog calibration.

The organic reef and bank facies, widely developed in Middle Ordovician Yijianfang Formation in Tahe oilfield , are characterized by point reefs and banks within the caronate platforms, and the reservoir spaces are mainly of microfissures and secondary dissolution pores.