Petroleum Resource Exploration
8 PETRONAS
General Geology
LETRONI
PETROLEUM RESOURCE EXPLORATION
PM320 is situated on the Northwest flank of Straits of Malacca and
constitutes a shelfal extension on the North Sumatra Basin (NSB).
NSB comprises of Tertiary sediments over pre-Tertiary
metasedimentary complex.
NSB is a part of the hydrocarbon-rich series of Tertiary back-arc
basin chain of the Sunda Island arc.
✰ NSB was formed during the early tertiary (Eocene - Oligocene) as a
series of alternating N-S trending structural highs (horst) and deeps
(grabens).
NSB consist of Tertiary sediments overlying pre-Tertiary sedimentary
complex.
✰ PM320 Basement consists of predominantly Pre-Tertiary carbonates
(Tampur Formation).
Basement occurs at about 2000m in the half grabens and in the
west and rises gently towards the east and northeast.View entire presentation