Paper: A Discussion of Cities Service Oil Companys Cummins C DW San Andres Waterflood

A discussion of the Cummin CD&W San Andres waterflood project in Ector County, Texas is presented. This waterflood, operated by Cities Service Oil Company, began in 1961 with a pilot consisting of four water injection wells and one oil well. The project has been expanded to twenty-eight injection wells and twenty-five oil wells based on the results of the pilot project. Secondary oil recovery to date exceeds 800,000 barrels. The success of the project has been attributed to close spacing of water injection wells and relatively low water injection rates.