Análisis Técnico Económico Para Mejorar El Arranque De Las Bombas Electrosumergibles Después De Un Trabajo De Reacondicionamiento

Abstract

The wells of the mature fields with their depleted reservoirs have low reservoir pressures after carrying out a workover on them and for certain conditions, must be filled with control fluid before the installing the electrical submersible equipment. This situation generates multiple starts in the electrical submergible equipment due to the increase of the motor operating temperature during the time of the control fluid displacement. In this project the economic technical analysis of a method to displace control fluid in which an amount of external fluid is calculated and pumped into the well to move the fluid was developed, preventing overheating of the motor during startup, and reducing possible damage to the equipment. To develop the work, suitable wells were selected to implement the proposed method, requiring analysis of the history of the wells that presented problems in the start-up the electrical submergible equipment after a workover. Also a qualitative comparison of the fluids that could be feasible to displace the control fluid was made considering the advantages and disadvantages with nitrogen as the most convenient. With the previous results, a comparison of the costs involved in applying the displacement method was developed, accompanied by a risk analysis of the operation and the equipment, if the method had not been implemented in the wells of this case study. With the results it was possible to determine that the displacements with nitrogen for the start of the electric submersible equipment is feasible under certain considerations.