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Resistivity modeling

Resistivity modeling. Pole - dipole. Pole – pole. 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:

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Resistivity modeling

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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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