Primeline Briefs on Exploration Well in East China Sea

The LS 35-3-1 exploration well in Block 25/34 was at a measured depth of 9,183 feet (2,799 meters), 285 feet (87 meters) above the planned total depth of 9,469 feet (2,886 meters) on May 3, 2010. The planned total depth should be reached in the next day or so after penetrating the third target zone. The operator, Primeline, reported that the upper two of the three target zones were penetrated; sandstones were encountered in both targets but oil and gas wasn't observed during drilling operations. Intermediate electric log tests were performed but showed no evidence of producible hydrocarbons in the first target zone. Electric logging, and if warranted, drill stem testing will be required to determine whether there are producible hydrocarbons in place. Block 25/34 comprises an area of 1.7 million acres (7,006 square kilometers) in the East China Sea, about 68 miles (110 kilometers) offshore in water depths of 246 to 312 feet (75 to 95 meters). Primeline serves as the operator of the block.

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