Paper: Produced Water Treatment System Willard Unit, Wasson San Andres Field, Yoakum County, Texas

One major problem frequently encountered in waterflood projects is the poor quality of produced water used for reinjection. One of the main factors usually cited for poor water quality is a high solids content. Another common problem with produced water is excessive carryover from the treating facilities , which can result in a significant loss of revenue. The produced water treatment system used at the Willard Unit near Denver City, Texas, has been successful in obtaining a good quality injection water. This paper discusses the Willard Unit treatment system and in particular emphasizes the design and operation of the dissolved gas flotation cell presently in use for oil skimming and solids removal.