SURFACE EXPLORATION TECHNIQUES
GEO- ELECTRICAL RESISTIVITY SURVEY
Vertical Electrical Soundings (VES) with Schlumberger configuration are conducted in order to delineate groundwater potential aquifer zones. Vertical Electrical Soundings (VES) at site are observed to study the subsurface lithology.
The results of the investigations obtained by using electrical resistivity software are presented in tabulated form, indicating the interpreted thickness and resistivity of the subsurface layers
MULTI-ELECTRODE ELECTRICAL RESISTIVITY (TOMOGRAPHY)
Multi-Electrode Electrical Resistivity (MER) provides rapid, non-invasive, and cost effective geophysical mapping over any type of terrain. MER system employs 32 to 256 electrodes attached to a cable. On land, the electrodes are coupled to the ground using 24-inch stainless steel spikes. Several different methods (Wenner or Schlumberger or diploe diploe) are used to collect electrical data. MER technique is used for the following purposes:
- 2D and 3D imaging for various purpose
The seismic survey can explain subsurface discontinuities, layering, and probable rocks/structures. It is suitable for the investigation of coal, oil and gas, groundwater, and massive metallic deposits. A 3D seismic survey outlines the basin configuration and resource estimate. Exploration seismograph is used for following seismic survey.
- Reflection survey
- Refraction survey
- Downhole survey
- Cross hole survey