Seismic reflection techniques are the most widely used geophysical technique in hydrocarbon exploration. They are used to map the subsurface distribution of stratigraphy and its structure which can be used to delineate potential hydrocarbon accumulations.
Gravity and magnetic are also used considerable frequency in oil and gas exploration. These can be used to determine the geometry and depth of covered geological structures including uplifts, subsiding basins, faults, folds, igneous intrusions and salt dome due to their unique density and magnetic susceptibility signatures compared to the surrounding rocks.
Gravity and magnetic data are also used for monitoring project. CSAMT and Magnetotelluric (MT) can provide pseudo-direct detection of hydrocarbons by detecting resistivity changes. It can also help and complement seismic data.
