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Resistivity Modeling for Subsurface Mapping: Array Selection Criteria & Survey Setup

Learn about resistivity modeling techniques, array sensitivity considerations, and survey setup for subsurface mapping. Explore various electrode arrays, data plotting methods, and factors affecting array selection. Understand how to optimize array sensitivity based on the type of structure, depth of investigation, and signal strength.

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Resistivity Modeling for Subsurface Mapping: Array Selection Criteria & Survey Setup

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  1. Resistivity modeling

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

  3. Data plotting

  4. 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.

  5. SURVEY SETUP

  6. 3-D MESH

  7. Block model

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

  9. Pole-pole array sensitivity

  10. Pole-dipole array sensitivity

  11. Dipole-dipole array sensitivity

  12. Wenner array sensitivity

  13. Schlumberger array sensitivity

  14. Near Surface Layer

  15. Near Surface Layer – Response, Plan View

  16. Near Surface Layer – Response, Pseudosection

  17. Vertical Contact

  18. Vertical Contact - Response, Plain View

  19. Vertical Contact – Response, Pseudosection

  20. Buried Vertical Contact

  21. Buried Vertical Contact – Response, Plan View

  22. Buried Vertical Contact – Response, Pseudosection

  23. Vertical Contact with Overburden

  24. Vertical Contact with Overburden – Response, Plan View

  25. Vertical Contact with Overburden – Response, Pseudosection

  26. 3D Prism

  27. 3D Prism – Response, Plan View

  28. 3D Prism – Response, Pseudosection

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