南桑山油田 アスファルテン析出の生産障害とその対策

Abstract

The Minami Kuwayama field, one of the largest oil fields in Japan, began production in 2003. Severe asphaltene problems have been experienced in all wells, in both the reservoir and production tubing, and at the surface facilities. We have been operating this field for over 10 years and learned that we could sustain the productivity through the use of chemicals and the control of production rates. This article provides our experience and major findings.