Special Oil & Gas Reservoirs >

2022 , Vol. 29 >Issue 3: 150 - 155

DOI: https://doi.org/10.3969/j.issn.1006-6535.2022.03.022

Drilling & Production Engineering

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

  • Yu Zhigang ,
  • Zhang Dezheng ,
  • Hu Zhenchao ,
  • Mu Yongwei ,
  • Yang Bo ,
  • Ma Yaling
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  • 1. CNOOC Zhanjiang Branch, Zhanjiang, Guangdong 524057, China;
    2. Beijing Goldwell Technology Development Co., Ltd., Beijing 100020, China

Received date: 2021-06-09

  Revised date: 2022-03-10

  Online published: 2023-01-09

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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

Cite this article

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 . DOI: 10.3969/j.issn.1006-6535.2022.03.022

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