Primeline Energy commenced exploratory drilling on the LS35-3-1 well, located on Block 25/34 in the East China Sea. On April 9, 2010, the COSL 942 jackup arrived on location for preparatory work, and the well spudded four days later. Drilling of the well should take up to 20 days, followed by logging and required testing. Primeline is implementing a step-out drilling campaign as part of its rolling exploration and development strategy, and the spudding of well LS35-3-1 is part of this operation. The exploratory well is located roughly 9 miles (15 kilometers) southwest of the Lishui 36-1 gas field and if a discovery is made, it will benefit from the infrastructure that will be built on the Lishui 36-1 field.
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).
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