Brunei

A group led by Tap Energy (Borneo) Pty. Ltd. is drilling the Markisa-1 exploratory well on Block M onshore Brunei 30 km south of giant Seria oil field.

Sept. 27, 2010

2 min read

By OGJ editors
HOUSTON, Sept. 27 – A group led by Tap Energy (Borneo) Pty. Ltd. is drilling the Markisa-1 exploratory well on Block M onshore Brunei 30 km south of giant Seria oil field.

The first well on the block, Mawar-1, was cased to total depth and suspended for tests (OGJ Online, Sept. 14, 2010).

The Markisa prospect was identified on 3D seismic data shot by the joint venture in 2009. The prospect is a separate undrilled fault compartment identified in the greater Belait anticline. Given Belait trend drilling history, the Markisa-1 well is considered to be low-to- moderate risk.

Markisa-1 is being drilled as a deviated well to test a sandstone reservoir that produced oil in the 1920s and early 1930s in an adjacent fault block. The well will also evaluate several secondary targets in the Miocene Belait formation and is expected to intersect the main Belait thrust fault. The well is designed to a total depth of 1,335 m.

The partners in Brunei Block M and in the Markisa-1 well are Tap Energy 39%, KOV Borneo Ltd. 36%, China Sino Oil Co. Ltd. 21%, and Jana Corp. Sdn. Bhd. 4%. KOV Borneo Limited is an indirect wholly-owned subsidiary of Kulczyk Oil Ventures Ltd., Calgary.

Kulczyk Oil Brunei Ltd., another indirect subsidiary of Kulczyk Oil, has a 40% interest in Block L north of Block M. The first well on Block L, Lukut-1, was drilled and suspended in mid-June pending tests by a service rig. A second Block L well, Lempuyang-1, commenced drilling operations on July 15 and is still drilling.