Electromagnetic geophysics, borehole geophysics, numerical simulation, inverse theory, reservoir description, 3-D reflection seismology, rock physics, fluid flow in rocks, machine learning and data science. Current Research Projects: -Formation evaluation -Borehole geophysics -Well logging -Numerical simulation -Signal and image processing -Inverse theory -Electromagnetic theory -Interpretation and inversion of 3D seismic data -Integrated reservoir characterization -Permanent sensors -Deep-sensing borehole geophysical measurements