Offshore staff
LONDON – Coro Energy has issued an update on resource estimates for the Mako gas field in the Duyung PSC in the West Natuna basin, offshore Indonesia, in which the company has a 15% interest.
Operator Conrad Petroleum prepared the estimate following a successful appraisal drilling campaign in 4Q 2019, in which the Tambak-1 and Tambak-2 wells confirmed the presence of good-quality reservoir sandstones with a common gas water contact across the Mako structure.
Conrad assesses the 1C (contingent) resource at 323 bcf of recoverable raw gas, an increase of 76% on the pre-appraisal estimate of 184 bcf in the previous Gaffney Cline and Associates (GCA) review.
Revised development scenarios are under review that could lead to plateau production of 150 MMcf/d, much higher than the previously modeled 44 MMcf/d.
Conrad has also engaged GCA to update its assessment of the Mako field, although the report will take longer to complete than planned due to current movement and travel restrictions affecting all parties involved.
Mako is a shallow structural closure extending over 350 sq km (135 sq mi). The reservoir is a Pliocene-age sandstone, with a gas-water contact at 391 m (1,283 ft) TVDSS.
The field is close to the West Natuna pipeline system so gas from the field could be marketed to buyers in Indonesia and in Singapore: a Heads-of-Agreement is already in place with one gas buyer in Singapore.
04/14/2020
