oa Foam Pilot Evaluations for the Snorre Field, Part 1: Project and Laboratory Results

The Snorre Field, operated by Saga Petroleum a.s., has been developed based on water flooding as the primary recovery mechanism. The field was put on stream in August 1992. In February 1994 a WAG pilot project involving two injection wells and three production wells was started in the Staffjord Formation of the Snorre Field. Extensive evaluations of the project plans and predictions showed that early gas breakthrough may be a potential problem. As a result of this, the use of foam for gas mobility control, fluid diversion, and blocking to reduce GOR in production wells has been included in the project plans as a means of improving the WAG process. A foam pilot test in a producer is scheduled for 1995. This test will be a first step for scaling laboratory data to field conditions, i.e. to investigate the selected surfactant's ability to generate and sustain a stable faam in-site.