Tight-radius ESP system installed in severely deviated well

A Baker Hughes CENesis Curve™ tight-radius electrical submersible pumping (ESP) system installed in an Oklahoma well passed through a 21°/100 ft (30 m) deviation at 5945 ft (1812 m) true vertical depth. This successful installation enabled the operator to deploy an ESP system as originally planned without incurring any additional drilling costs.

Alternative solution preferred to redrilling the well or switching to a less effective method of artificial lift

The operator had drilled a new well and planned to use an ESP system as the preferred artificial lift method. However, during drilling, the well path got off track, leaving the operator with a well with a 21°/100 ft dog leg severity (DLS). The traditional ESP system, which the operator planned to install to maximise production from the well, was unable to pass through the severe build-up rates.

“Faced with either redrilling the well or switching to a less effective method of artificial lift, the operator chose an alternative solution from Baker Hughes – our CENesis Curve tight-radius system,” says Cristian von Zedtwitz, Unconventional Segment Manager for Baker Hughes artificial lift systems.

“This innovative solution for deviated wells uses patented boltless connections between the ESP system components. Unlike traditional bolted flanges, the connection design allows the equipment string to reliably pass through build-up rates up to 25°/100 ft. to be set deeper in the well, closer to the producing zone. Daily production from the well was 400 bpd of oil – meeting the operator’s projected production target.”

Adapted from press release by Cecilia Rehn


Published on 20/04/2015

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