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Improving esps performance using sand control and downhole chemicaltreatment: Cases studies in the permian basin

Abstract:

This successful application of complementary systems helped to extend the runlife of the wells until theESP needs to be resized to match the reservoir inflow capacity. The sand and chemical challenges need to beapproached by gathering data starting from expected fluid production (Oil, Water, Gas), hydraulic fracturingdesign (frac sand size), and CWA (Complete Water Analysis). This paper proposes a new method to dealwith sand and chemical problems in the ESPs. The solution includes three steps: Isolation method, sandcontrol system, and down-hole chemical treatment. The isolation method primarily isolates the pump intakeusing cup packers, mechanical packers, or shroud. The sand control system considers static and dynamicprinciples whose length, open area, and separation efficiency depend on the particle size distribution, wellcompletion, and fluid potential. Finally, the down-hole chemical treatment micro-encapsulates the originalchemical components used on the surface and allows their installation and controlled dispersion down-holebelow the sand control system. This paper includes the guidelines and simulations required to design thecomplete solution.