Affiliation:
1. National University of Engineering of Peru, Peru
2. Polytechnic University of Madrid, Spain
Abstract
There is a growing number of oil production wells in the world that use rod pump units as an extraction system. In fact, this lifting method is become the preferred one for unconventional wells that are producing at the late-stage period, yet with still attractive rates of a few hundred bopd. Dynamometry basically consists of the visual interpretation of the shape of the load graph based on the position of the piston of the subsoil pump. This task is carried out by an operator and his experience is used for the correct interpretation that can be contrasted. With additional tests, diagnosis becomes very important because it allows optimizing production by adjusting rest and production times, reducing operation and maintenance costs, avoiding failures and unscheduled stops, but many times there are not enough trained personnel for interpretation. In this context, dynamometry has been refined both in the acquisition and in the interpretation of dynamometric records.