FASIES PENGENDAPAN PINGGIRAN SUB CEKUNGAN AMAN SELATAN PADA KELOMPOK PEMATANG BERDASARKAN DATA SEISMIK dan DATA SUMUR DI DAERAH RA CEKUNGAN SUMATERA TENGAH
Abstract
ABSTRACT
The
geograficlly research are located in
onshore of Central Sumatera Basin regencies that constitute a potential and
productive basin and included into operation area of PT. Chevron Indonesia as
Contract Production Sharing with Pertamina.
Main
structure in this field is normal fault with direction northwest until
southwest. Source rock in this field in Pematang Formation with Lower Red Bed
and Brownshale member.
RA
field have a information source rock ar four well but just two well have
information. In this field have log infomation from four well can a contruction
for this final exam finished.
The
research started with analyze and interpretation core for determination
depositional environment. And then the other analysis is interpretation well log
for determination facies from trend curve gamma ray. After knowing all the of
the facies ini this field, those were then correlated subsurface from seismic
and log analysis for have frame subsurface condition with wider lateral
distribution and then for to know teh sedimentation direction.
There
are two electrofacies from research object, first is fluvial channel with
cylindrical shape of log curve, and second with bell shape of log curve. Final
result seismic interpretation a termination
direction reflect is west and then interpretaion directional
depositional from east and finish in west.
Description
Keywords
first, is fluvial channel with, cylindrical shape