Coastal Confirms Net Pay at Buan Ban Appraisal

Coastal Energy announced the results of two wells drilled at the Bua Ban North B field, offshore Thailand.

The Bua Ban North B-08 well was drilled to a total depth of 5,900 feet TVD and encountered 92 feet of net pay with 28 percent porosity and 25 percent water saturation in the Miocene interval. The B-08 well was drilled on the easternmost fault block of the field and successfully appraised the discovery made by the B-03 well. As a result of the B-08 drilling, the lowest known oil was moved 140 feet lower in this fault block.

The B-07 well was drilled as a water injection well and to establish the oil water contact in the field. The B-07 encountered the oil water contact at 3,824 feet, which was in line with the prognosis based upon previous drilling results. Pressure and log data from the B-08 well indicate that the oil water contact may be deeper on the eastern side of the field.

Randy Bartley, Chief Executive Officer of Coastal Energy, commented, "The results of the B-07 and B-08 wells serve as further confirmation of the Miocene trend in the Songkhla basin. Updated mapping based on drilling results indicates that the structural closure at Bua Ban North B is approximately 2,800 acres in size. The positive appraisal of the eastern fault block has major implications for the extension of this field as it has significantly increased the prospectivity along the major eastern Miocene fault which extends over three kilometers between Bua Ban North A & B.

"The drilling rig is going to mobilize to the Songkhla H prospect next, which is a commitment well outside of the two established production areas on G5/43. We will proceed with the installation of the mobile offshore production unit to begin production at Bua Ban North B once the rig is off location."


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