Production Temporarily Halted at Cliff Head Field

Roc Oil reported production was halted at its Cliff Head oil field February 17, following advice from BP that it had identified organic chloride in Cliff Head crude delivered to the BP refinery. Roc stated that the organic chloride may relate to batch chemical treatments being undertaken as part of the current Cliff Head 12 well workover program.

The operator has since conducted a flushing program to clear the system of any potential residual organic chlorides. No environmental incidents or losses of containment have been reported because of this activity. Regulatory authorities were informed of the temporary shutdown. Prior to the suspension, Cliff Head was producing about 3,000 bopd because of the workover activity. The Cliff Head oil field is located in Commonwealth exploration permit WA-286-P, approximately 11 kilometers off the western Australian coastline in 52 feet (16 meters) of water. Serving as operator of the license is Roc Oil, holding a 37.5% interest, other partners in the permit include AWE (57.5%); Itochu (5%).

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