Beibu Gulf, WZ10-3W

Asset overview - Beibu Gulf WZ10-3W Development

Beibu Gulf, offshore China
Development area 18km2


Roc Oil (Bohai) Company

JV partners and interests

WZ10-3W Development & Production

WZ10-3W Exploration & Appraisal 
CNOOC Limited 40% -
Roc Oil (Bohai) Company 35% 58.3%
Smart Oil Investment Limited 25% 41.7%

The project is nearing development final investment decision.


ROC signed a Petroleum Contract with CNOOC on 3 July 2018 to develop the Weizhou 10-3W oil field.  ROC has a paying interest of 58.3% until FID is reached.

The Petroleum Contract included exploration block 22/04, from which ROC withdrew in November 2022.

Following data purchases in 2018, subsurface studies progressed, and the subsurface program passed CNOOC Limited experts' review in August 2019.  An optimised subsurface program was accepted by CCLZ Experts in 1Q 2021. Following reviews with CCLZ Experts and CNOOC Experts in 2021, the development feasibility study was approved in May 2022.

The project completed the basic design phase in 2023. Following reviews with CNOOC China Limited Zhanjiang (CCLZ) Experts and CNOOC Experts, an overall development plan was prepared. Work is in progress towards a final investment decision in 1H 2024.