Cyclic Production Scheme to improve reservoir performance

Abstract

This thesis presents a new production scheme to produce high water cut wells from mature oil fields called Cyclic Production Scheme. This scheme is applied as a first field trail in the world in one of Saudi Aramco mature oil fields. The field trial under Cyclic Production Scheme is illustrated thoroughly in this paper. A conceptual simulation model using ECLIPSE is built to assess reservoir performance under the Cyclic Production Scheme. Three simulation models are considered: Homogenous, Layered and Heterogeneous. The simulation results show commonly the advantages of Cyclic Production Scheme over regular production as follows: (1) Significant reduction in cumulative water production up to 50%. (2) Slight improvement in cumulative oil production up to 5%. (3) Slight reduction in cumulative water injection up to 6%. (4) Small increase in average reservoir pressure by about 70 psi.