Llano, located about 200 miles southwest of New Orleans in approximately 2,600 feet of water, is producing about 10,500 barrels of oil and 26 million cubic feet of gas per day from one well, through a subsea system tied back 11.5 miles to Shell’s Auger tension leg platform (TLP). Dedicated production capacity at Auger is 25,000 barrels of oil and 75 million cubic feet of gas per day. A second well is planned to be on production later this month. The subsea system consists of two wells tied back to Auger via a pipe-in-pipe looped flow line. Llano is SEPCo’s second project to utilize 15,000 pounds per square inch (psi) subsea equipment. Total development costs were approximately $215 million, including modifications to the Auger TLP. The project was completed on time and within the allocated budget. “This is the fifth subsea system that we have tied back to Auger,” said Gaurdie Banister, technical director for Shell EP Americas. “This tieback allows the Llano owners to efficiently leverage Shell’s existing infrastructure for their mutual benefit. Auger is Shell’s most mature TLP--having just passed its tenth year of production-- and remains a key infrastructure point for developments in the area, maximizing value for both host and satellite owners.” Shell, the operator, holds 27.5 percent interest in the field. Amerada Hess owns 50 percent and ExxonMobil has the remaining 22.5 percent.
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