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CNOOC hits oil pay at second Beibu wildcat offshore China

13th October 2014

Drilling has been completed on the second of the two exploration well programme in the CNOOC-led Beibu Gulf Block 22/12, according to joint-venture partner Roc Oil

CNOOC hits oil pay at second Beibu wildcat offshore China
Wireline evaluation logging programmes (MDT pressuring/sampling, NMR and rotary sidewall coring) have been run and confirmed the oil pay in T42 reservoir has favourable reservoir porosities in the region of 31 per cent and oil properties of approximately 29 deg API

The current exploration well (WZ12-10-2) discovered oil in the Jiaowei (T42) formation with a high porosity net oil pay of around 11-metres TVD (total vertical depth). The WZ12-10-2 well was drilled to a total depth of 1,590-metres measured depth (MD)/1382-metres true vertical depth subsea (TVDSS), where the basement granite has been confirmed, as prognosed.

"I am very pleased with the back to back exploration success in the current Beibu exploration campaign,” said Alan Linn, Roc Oil chief executive officer.

“The new reservoirs will help in extending the longevity of the Beibu Gulf project and support the future integration of WZ12-8 East development. These discoveries are a result of the very productive joint venture collaboration and cooperation with our partners CNOOC-Zhanjiang (CLZ), Horizon and OAL. The positive results we have been able to report during this programme are a direct result of successful team work."

Wireline evaluation logging programmes (MDT pressuring/sampling, NMR and rotary sidewall coring) have been run and confirmed the oil pay in T42 reservoir has favourable reservoir porosities in the region of 31 per cent and oil properties of approximately 29 deg API.

The well was plugged and abandoned on 12 October 2014 and the rig HYSY 935 will be released shortly. As at the date of this second supplementary target’s statement, 2014 Beibu exploration drilling programme has been successfully completed with no safety or environmental incidents.

The WZ12-10-2 well is located 1.6 kilometres east northeast of the existing WZ12-8W Platform. Further work will now be undertaken to evaluate both the extent of the structure and reserves, and assess the most effective route for integrating these additional oil resources into the existing Beibu project.

 

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