Resistivity modeling

ELECTRODE ARRAYS Pole – pole Pole - dipole Dipole - dipole Wenner Schlumberger ELECTRODE ARRAYS

Data plotting

CHOICE OF THE “BEST” ARRAY Depends on: type of structure to be mapped sensitivity of the resistivity meter background noise level Things to be considered: depth of investigation sensitivity of the array to vertical and horizontal structures horizontal data coverage signal strength.

SURVEY SETUP

3-D MESH

Block model

Wenner Pole-pole Dipole - dipole Pole-dipole Block model response

Pole-pole array sensitivity

Pole-dipole array sensitivity

Dipole-dipole array sensitivity

Wenner array sensitivity

Schlumberger array sensitivity

Near Surface Layer

Near Surface Layer – Response, Plan View

Near Surface Layer – Response, Pseudosection

Vertical Contact

Vertical Contact - Response, Plain View

Vertical Contact – Response, Pseudosection

Buried Vertical Contact

Buried Vertical Contact – Response, Plan View

Buried Vertical Contact – Response, Pseudosection

Vertical Contact with Overburden

Vertical Contact with Overburden – Response, Plan View

Vertical Contact with Overburden – Response, Pseudosection

3D Prism

3D Prism – Response, Plan View

3D Prism – Response, Pseudosection