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January 27, 2021

CNOOC set to install semi-submersible platform at Lingshui 17-2 gas field

China National Offshore Oil Corporation (CNOOC) is set to install and commission the world’s first 100,000t deepwater semi-submersible production and storage platform at the Lingshui 17-2 gas field development project offshore China.

By Umesh Ellichipuram

China National Offshore Oil Corporation (CNOOC) is set to install and commission the world’s first 100,000t deepwater semi-submersible production and storage platform at the Lingshui 17-2 gas field development project offshore China.

Built to ABS Class, the semi-submersible platform has a maximum oil storage capacity of nearly 20,000m³ of condensate for ship-to-ship offloading.

ABS global offshore senior vice-president Matt Tremblay said: “We are delighted to be able to support this important project.

“As the world’s leading offshore Classification organization, ABS’ extensive experience means we are uniquely well placed to support delivery of a project of such scale, complexity and significance to the Chinese offshore industry.”

Located in water depths of 1,500m in the South China Sea, the Lingshui 17-2 field is situated in the northern part of the Qiongdongnan Basin in the western continental shelf (WCS) of the northern South China Sea and is approximately 150km south of Hainan Island in the South China Sea.

The field comprises eight separate gas reservoirs, each with between one and four gas layers with an average thickness of 293.3m.

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Additionally, the field’s subsea production system consists of 11 horizontal subsea trees, four manifolds, topside and subsea control system and a vertical tie-in connection system.

In 2019, Cargotec unit MacGregor was selected to supply the riser pull-in system for the deepwater floating production unit (FPU) located in the Lingshui 17-2 gas field.

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