Optimization and application of high-flow-rate heavy-oil electric submersible pumps in the Tahe Oilfield

doi:10.3969/j.issn.1006-6535.2026.02.017

Abstract

Abstract: With the promotion and application of flow potential regulation technology in the Tahe Oilfield,high-flow-rate heavy-oil electric submersible pumps have exhibited high failure rates such as motor lead cable burnout and protector failure.To address these issues,a three-dimensional temperature-field finite element simulation method was applied.By optimizing the topology of permanent magnet motors and the heat-dissipation structure of motor heads,heat accumulation was reduced and temperature resistance of motor lead cables was improved.Through physical isolation design and labyrinth flow-path design,and leveraging the high density and strong stability of heavy-oil isolation fluids,a heavy-oil protector with a dynamic“liquid piston”was designed to achieve physical isolation between heavy oil and the capsule chamber,thus avoiding protector capsule failure caused by direct contact with heavy oil.Through optimization of the motor and protector designs,the adaptability of high-flow-rate heavy-oil electric submersible pumps to flow potential regulation technology was improved,providing technical support for promoting this technology in the Tahe Oilfield.

Key words: electric submersible pump, permanent magnet motor, flow potential regulation technology, heavy oil, Tahe Oilfield

CLC Number:

TE964

SONG Zhengcong, HAN Guoqing, XIE Xiang. Optimization and application of high-flow-rate heavy-oil electric submersible pumps in the Tahe Oilfield[J]. Special Oil & Gas Reservoirs, 2026, 33(2): 151-158.

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