Seabed Logging Modeling Using Comsol Multiphysic Software: Effect of Hydrocarbon Geometry to the EM Wave

Among the many techniques used for hydrocarbon, Sea Bed Logging (SBL) is a
technique from marine controlled-source electromagnetic (CSEM) sounding, which can
be used to detect and characterize hydrocarbon bearing reservoirs in deep water areas.
Compared to other techniques such as seismic methods, SBL can be considered as better
in term of cost, effectiveness and environmental friendly. Yet, the real seabed logging
still need large capital since the equipments and the process to put receivers and
collecting them will consume large amount of money. Researchers need to spend much
more time on finding various type of crude oil to do seabed logging survey. Hence, the
objective of this project is to create SBL simulator such that it will be more realistic and
close to the actual condition. At the same time, it is to test whether Comsol Multiphysics
software is able to display the result of SBL simulation. The project is started with a
literature survey on seabed logging and related items from relevant sources such as
books and journals. Then, familiarization with the main software which is Comsol
Multiphysics and survey on the related formulations for seabed logging will be carried
out. The problem is solved and the result is plotted in a graph. From the experiment
done, it is shown that the existence of hydrocarbon will results a high intensity of
electrical field and also that the higher the depth of hydrocarbon is, the lower the
intensity will be. Other results show the effect on shape and thickness of hydrocarbon as
well as the frequency and current of transmitter used.