In the Permian Basin, one operator was experiencing frequent alarms and daily shutdowns on ESP wells due to elevated motor temperatures and undercurrent. By combining graybeard field experience with proprietary Variable Speed Drive (VSD) controls, Valiant was able to help the operator avoid these interruptions and increase system uptime.
An operator was experiencing multiple alarms and daily shutdowns across 10 wells in the Lower Spraberry formation of the Permian Basin. Transient gas production in these wells was causing elevated motor temperatures and undercurrent, triggering multiple alarms on a daily basis and resulting in repetitive shutdowns and restarts of the electric submersible pump (ESP) system installed. The previous artificial lift provider’s variable speed drives (VSDs) were not programmed to recognize or adapt to gas-locking conditions, resulting in mechanically stressful equipment cycling, frequent interruptions and lost production during periods where the system was turned off. Over time, frequent starts and stops will deteriorate the insulation on an ESP’s power cable and motor winding, cause excessive wear on internal components, and diminish ESP system run time. Therefore, the operator’s frequent shutdowns were not only causing production setbacks but also would have contributed to failures, further jeopardizing the profitability of the wells.
To increase uptime and mitigate the operator’s losses, Valiant installed ESP systems designed with 400 series pumps and vortex gas separators above a 456 series motor controlled by Valiant’s Pulse® Variable Speed Drive. Every Pulse VSD is programmed with proprietary gas-lock mitigation controls, which automatically reduces motor speed to allow gas slugs to work through the pump without shutting down for improved ESP run time and performance. Valiant’s VSD technicians diagnosed the cause of the operator’s ongoing problem and provided a solution: Pulse™ drives for all 10 wells, programmed to ride out the transient conditions and ensure uninterrupted operation. After resolving the issue, the operator was able to maintain asset profitability and Valiant was awarded ten new wells in the Permian.