Hart’s E&P: Slimline ESP Boosts Production Rates Deeper In The Well

For unconventional oil and gas producers looking to lower drilling costs, optimize completion designs and improve wellbore stability, a popular solution is to merely drill smaller diameter wells. However, the money saved in well construction often comes at a price during production—namely, space limitations in the well prevent most conventional artificial lift technologies from being installed at the desired depth. As production rates drop, conventional lift systems must be installed higher in the well than the operator would prefer. This results in greater lifting costs, sub-optimal production rates and lower ultimate recovery from the reservoir. This was the challenge facing an operator producing from the Wasatch Formation of the Uinta Basin. The operator set a 5-in. 18-lb liner at a total vertical depth (TVD) of 2,103 m (6,900 ft) in a 7-in. 4,724-m (15,500- ft) cased vertical well. To take advantage of the thick source rock, the operator installed a completion with a vertically perforated zone from…

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