Publications

Magnetotelluric usually called as a passive method this is because this method only receive magnetic signal to image the resistivity structure of the earth (Vozoff, 1991, Jiracek et.al, 1995). Using magnetic and electric sensor to produce subsurface resistivity value, the imaging of the basin configuration and structure usually became the main target for the MT reading. This methodology use two electric channel and 3 magnetic channels to measured the earth natural electric (E) and magnetic (H) field. The frequency ranges are between 0.0001 kHz up to 1 kHz. Apparent resistivity {Pxy = 0.2*T [Ex / Hy]2} is the key of MT interpretation. The skin depth provided by equivalent of [d» 503 ÖP/f] with this measurement the information of deep could be gain. The resistivity of a hydrocarbon-bearing formation will be 20 to 300 times greater than the waterbearing formation. This could help although not 100% accurate. The other advantages, rather with seismic these resistivity method could penetrate the high density rock (such as limestone or salt dome) than in same case of seismic become blur. An interpreted reservoir could be track down by the 2D model in which commonly used to define the structure and basin configuration or even more to know the spreading of indicated reservoir, cap rock, and source rock. 3D Model gave the whole view laterally of the spreading of stratigraphy, tectonic structure, and also basin configuration. Several examples taking placed in across the world.