The Progressing Cavity Pump (PCP) applications continue to expand from heavy and medium into light oil applications. The benefits include lower capital cost, less visual impact, smaller footprint and decreased operational costs primarily as a result of the high mechanical efficiency of a PCP. The difference between premature failure and long-term success can be minimized by following best practices and lessons learnt from 20 years of experience evaluating thousands of wells. Light oil usually has a high percentage of Mono-Aromatics of which the most common are Benzene, Toluene, and Xylene (BTX). The molecular structure of BTX enable it to attack or attach onto the elastomer, causing aggressive swelling and softening. Light oil is usually found at deeper, warmer reservoirs causing the BTX to be more active and aggressive while also reducing the mechanical strength of the elastomer. H2S and CO2 can also be associated with light oil and have adverse effects on the elastomer. This paper will discuss how to gather important data, sort information, select equipment and provide operational guidelines to improve the overall success of PCP’s in light oil.

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