ON BEHALF of its operating partners Amerada Hess and ExxonMobil, Shell announced on 17 May that production has begun from the Llano field in Garden Banks Blocks 385 and 386 in the Gulf of Mexico.
The field, located about 320km SW of New Orleans in approximately 850m of water, is producing about 10,500brl/d of oil and 26m cuft/d from one well, through a subsea system tied back 18.5km to Shell’s Auger tension-leg platform (TLP). Dedicated production capacity at Auger is 25,000brl/d of oil and 75m. cuft/d of gas. A second well is planned to be on production shortly.
The subsea system consists of two wells tied back to Auger via a pipe-in-pipe looped flow line. Llano is Shell’s second project to use 105-MPa subsea equipment. Total development costs are put at approximately $215 million, including modifications to the Auger TLP, and Shell reports that the project was completed on time and within the allocated budget.
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