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Roc Discovers Oil, Offshore China

30/09/2014 by


Roc Oil (China) Company, a wholly owned subsidiary of Roc Oil Company Limited , advised drilling was completed on the first of two exploration wells in the Beibu Gulf Block 22/12. The WZ12-10-1 well has discovered oil pay in the Jiaowei (T42) formation, while no oil pay was interpreted in the Weizhou formation.

The WZ12-10-1 well was drilled to a total depth of 1406m MD/1373m TVDSS, where the Basement granite has been intersected. The well discovered oil in the very top of the Jiaowei (T42) formation over an interval of 5.5m, with a high porosity net oil pay of 4.2m. A sidetrack (WZ12-10-1Sa) was then drilledwith 340m eastern step out to a total depth of 1265m MD/1105m TVDSS to prove up the updip T42 reservoir and confirmed oil in the very top of the Jiaowei (T42) formation with a thicker net oil pay of 5.5m.

The well is located 4.7km northeast of the existing WZ12-8W Platform and approximately 2.7km west of the WZ12-8E discovery wells. Wireline evaluation logging program (NMR, MDT Pressuring and Sampling) has been run, which confirmed the oil pay in T42 reservoir. The well was plugged and abandoned on 27 September 2014.

This discovery will be evaluated on how best to integrate it into the Beibu Project. Rig HYSY 935 will be moved to the WZ12-10-2 exploration location to drill the second and final well in this program. Mr Alan Linn, Chief Executive Officer stated "This oil discovery adds potentially valuable incremental oil to the Beibu project. The location of the oil discovery allows ROC and the joint venture to evaluate alternative development scenarios, particularly integration with the Beibu WZ12-8E oil discovery".

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