Since 2002 ROC has drilled six exploration wells in the Block, the first of which, Wei 6-12-1, was a small but potentially commercial oil discovery. In 2006, Wei 6-12S-1 made a potentially significant oil discovery. Four appraisal wells have also been drilled in the Block. In 2006, Wei 6-12S-1 drilled approximately 95m of net hydrocarbon pay, mainly oil, with good reservoir characteristics. Testing of three separate zones resulted in a total collective stabilised flow rate of 5,750 BOPD. An appraisal sidetrack, drilled and cored close to the discovery well, displayed similar reservoir quality to the discovery well. A second sidetrack well was drilled, designed to intersect all the reservoir intervals seen in the upper part of the original discovery well downdip from that well. The well intersected 16m net oil pay over four sands, two of which were not present in the discovery well. There are six undeveloped oil accumulations in the Block: Wei 12-8 East, Wei 12-8 West, Wei 12-2, Wei 12-3, Wei 6-12 and Wei 6-12 South. |
On 27 September 2008, CNOOC confirmed that the Wei 6-12, Wei 6-12S and Wei 12-8 Oil Fields have been declared development areas. Work is in progress on the preparation of an Overall Development Plan for the Wei 12-8 West, Wei 6-12 South and Wei 6-12 oil fields, planned to be submitted in 4Q 2008 or early 2009 for Chinese Government approval. |