Significant Hydrocarbon Accumulation in Deep Overpressured Play of Baram Delta, Malaysia - A Breakthrough

Two recent HPHT wells have successfully tested the deep seated overpressured play in the Baram Delta with significant discoveries of gas and condensate at depths of more than 4500m below mudline. These breakthrough findings are a major achievement for the exploration activities in the Baram Delta. The well recorded the highest reservoir pressure to date in Malaysia, approximately 14,000 psi with temperature of 152 deg C at TD. Total of 200m nett gas sand are penetrated with all gas bearing reservoirs filled to the structural spill (average of 650m of vertical gas column), the longest proven gas column ever drilled in the Sarawak province, Malaysia. The structure which was filled to spill is primarily, but not exclusively attributed to an excellent lateral seal of a growth fault system. This is further enhanced with the deposition of foreset shales on the hanging wall of the fault. Overpressure conditions have also significantly enhanced the porosity preservation. Understanding the play type behavior remains the critical challenge particularly in evaluating the structuration, trap integrity, and the seal capacity.