Study and Application of Fishing Electric Submersible Pump Technology Without Workover Rig

doi:10.3969/j.issn.1006-6535.2021.03.024

Abstract

Abstract: In response to the challenges of high well workover costs, difficult resource coordination, slow resumption of production and high impact on production in workover operations of offshore marginal oilfield, a study was conducted on fishing electric submersible pump technology without workover rig. With the design and development of key tools such as electrical wet joint system, retracting cylinder system and suspension system, this technology achieves the purpose of replacing the electric submersible pump by steel wire (cable) fishing tool, and no workover rig is required in workover operation, greatly reducing the cost, shorten the shutdown time of oil wells, and improving the production rate. The field application demonstrated that this technology was well-developed and reliable, reducing the operating cost per well by about 70%. This technology may improve the development benefits of offshore marginal oilfields and win wider application range.

Key words: operation without workover rig, fishing electric pump, ESP, offshore oilfield, marginal oilfield

CLC Number:

TE358

Yu Zhigang, Song Lizhi, Fan Yuanhong, Yu Dong, Dong Jiayong, Zhou Chongke. Study and Application of Fishing Electric Submersible Pump Technology Without Workover Rig[J]. Special Oil & Gas Reservoirs, 2021, 28(3): 157-161.

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