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International Journal of Petroleum and Geoscience Engineering
IJPGE 2015, 3(2), 116-124
Improving Reservoir Recovery Factor Using Enhanced Electrical Submersible Pump Design: a Case Study
a Reservoir studies and development research Division, Research Institute of Petroleum Industry
b Tehran Energy Consultant (TEC)
c Research Institute of Petroleum Industry (RIPI)
ABSTRACT
Production from an offshore oil field – named as X – would be under natural depletion mechanism according to development plan of 25 years from 4 horizontal wells. Natural production plateau time of X oil field will be 6 years, so in order to preserve production plateau of the filed longer, it should be added some source of energy to the wells to compensate pressure drop within the wellbores. One of the practical methods is using artificial lift and for this purpose Electrical Submersible Pump (ESP) is designed for each of 4 horizontal well in this reservoir. In this paper all pump features and its designing parameters will be presented. To accomplish the sensitivity analysis on design variables, it needs to make the Inflow Performance Relationship (IPR) model, and outflow model is combined with the inflow model to get a solution point on the rate and bottom-hole pressure of the wells. Finally, different values of design variables are applied to the model to investigate the possible variations of the production also its impact on reservoir recovery factor. As a result, reservoir recovery factor increases to 8.91 and 11.66 percentages in scenarios of production with different type of ESPs in wells, in front of 6.6% recovery in natural depletion.