ANTENNA DESIGN FOR DEEP HYDROCARBON TARGET IN SHALLOW WATER EXPLORATION

Nowadays a control source electromagnetic method is used for offshore
hydrocarbon exploration. Hydrocarbon detection in Sea Bed Logging (SBL) is a very
challenging task for shallow water-deep target reservoirs. Electromagnetic field
response of an antenna cannot be able to detect shallow water-deep target due to the
air waves effect in seabed logging environment. This work premise deals with a new
antenna design for shallow water-deep target hydrocarbon exploration. A new curved
antenna was designed by using computer simulation technology software (CST). CST
software was used to detect deep target hydrocarbon between I OOOm to 5000m
underneath seabed. The model area was assigned as ( 40x40 km) to replicate the real
seabed environment with various target depths. Magnitude verses offset with change
of frequencies, and change of curvature (h= R, h <R) of antenna comparisons for
different target depths were done in this model.