Study and Application of Packer Y-tool in Dual-ESP Wells

doi:10.3969/j.issn.1006-6535.2022.03.022

Abstract

Abstract: A new packer Y-tool was developed to address the problem of ineffective fluid internal circulation due to the lost circulation at the check valve of the dual electric submersible pump (dual-ESP) in offshore oilfields. The Y-tool was designed with packer sleeve and packer sleeve locking mechanism to prevent the ineffective internal circulation of fluid in the well, ensuring the normal production of the ESP wells and reducing the workover operation caused by the lost circulation at the ESP check valve. The method was applied 15 wells in the field, with 100% efficiency rate, effectively improving the production rate of oil wells and reducing operation cost. The technology can promote the application of dual electric submersible pump in the oil recovery of offshore oilfields, with great economic and social benefits.

Key words: dual-ESP, check valve, lost circulation, packer Y-tool, packer sleeve

CLC Number:

TE355.5

Yu Zhigang, Zhang Dezheng, Hu Zhenchao, Mu Yongwei, Yang Bo, Ma Yaling. Study and Application of Packer Y-tool in Dual-ESP Wells[J]. Special Oil & Gas Reservoirs, 2022, 29(3): 150-155.

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