| dc.description.abstract | Deep marine sandstone deposit is one of favorable hydrocarbon reservoir in Norwe-
gian Basin. However, it remains not being fully understood due to its variation in
term of sedimentation process, distribution, and reservoir quality. Plenty of subma-
rine fans system models were built as solutions to capture better insight regarding
those challenges. However, the models are general version of real life example, thus
it needs to be adjusted for each deep marine system. This study took place in
southern Loppa High area where some of deep marine deposit reservoir were drilled
and struck numerous failures, even though petroleum system is working on other
plays in nearby areas. Possible causing factor is particular geological setting related
to multiple uplift processes occurred in drainage source area of Loppa High. The
goals of this study is to understand how deep marine deposit, in the form of sub-
marine fans, growth in such distinctive geological setting. The result will be used
in building submarine fans system model which later helps us conceive hydrocarbon
prospectivity in the surrounding deep marine system.
In building the model, each of component dening the submarine fans need to be de-
scribed one at a time. Straightforward and visible components including geometry,
lateral distribution, formation thickness until accumulation location of the fans are
some of the examples. Meanwhile, Any other components derived from combination
of seismic and well data analysis, are paleo depositional environment, source condi-
tion, type of sediment transportation system, basin paleomorpholgy, slope gradient,
number of feeder system, sedimentation mechanism, number of feeder system, and
natural shape when the submarine fans was deposited initially. Combining all of
available components, it is plausible to create new submarine fans model system
particularly for Southeastern Loppa High area.
The result is model where most of the characteristics resemble closely to sand -
rich submarine fans, with some notable variation in several aspects. Multiple feeder
system which conceptually related to slope apron and no direct lateral continuation
between the end of conduit exit mouth and proximal fans body, are the signicant
variation which can be found on the model. Signicant founding comes from present
morphology of the fans, which is tilting toward updip direction. This current con-
dition accommodate seal failure to develop and increase the risk of hydrocarbon
prospectivity. | |
