The Fullerton Clearfork field, Andrews County, Texas, was discovered in 1942 and waterflooding was initiated in 1956. Field development continues through infill drilling, injection conversions, and add-pay workovers. Recent reservoir management efforts in the Fullerton Clearfork Unit have concentrated on improving workover and drill well economics, and optimizing waterflood performance. This paper discusses techniques that have been developed to identify potential thief zones, improve perforation selection in workovers and drill wells, balance waterflood patterns, and optimize location selection for new drill wells. The flood balancing techniques described in this paper have been implemented in a test area and results from this test will be discussed. Results from recent workovers, conversions, and drill well programs will also be discussed.

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