Paper: M.C. Watson, Texas Tech University

The Levelland and Slaughter fields combined have produced over 1.6 billion bbls from 6000 wells and currently produce 6% of the oil in Texas. Most of the field is under water and CO2 flood operations. This paper investigates reservoir and petrophysical characteristics of various areas in the Levelland Slaughter field in order to assess relation to performance of secondary and tertiary recovery. The benefits would be to use this relationship to identify depositional environment/facies and relate them to flood performance. In areas where no flood has been installed, the relationships developed herein could assist in the ability to predict flood recovery and the method of development. The first objective was to divide the field into areas of like depositional environments. Once subdivided, relationships between petrophysical properties and secondary recovery rates are developed utilizing Lucia's rock fabric classification and production plot methods demonstrated by Reza Fassihi of BP.