INVERTED ELECTRICAL PUMP COMPLETION TO MAINTAIN FLUID SEGREGATION AND ENSURE MOTOR COOLING IN DUAL-STREAM WELL

An electrical submersible pump (ESP) 36 completion installed in casing 12 perforated for water disposal 14 and production 16 is disclosed. A packer 90 separates the disposal zone 94 and the production zone 92. An inverted ESP 36 assembly is located inside of a canister 70. The ESP 36 and canister 70 are lowered on a tubing string 24 into the casing 12. The canister 70 has a downwardly extending canister extension flow-directing member 82 that communicates with water in the casing 12 and which passes through the disposal zone 94. Water is pumped down the canister extension member 82 into the disposal zone 94 and formation. Well fluids are drawn up the extension from the production zone 92. Various configurations are disclosed to facilitate flowing well fluids, e.g., oil-rich mixture or water, past the motor 30 for cooling the motor of the inverted ESP 36 while maintaining fluid segregation. The completion is particularly suited for production wells wherein the oil and water have a strong tendency to naturally segregate-within the wellbore.