The Processes Involved in The Acquisition, Processing and Interpretation of Geophysical Data for Borehole Drilling in North Central Basement Terrains of Nigeria with Case Study in (F.C.T.)

• Author(s): Offiaukwu Kenneth Chinonso
• Paper ID: 1703465
• Page: 162-167
• Published Date: 26-05-2022
• Published In: Iconic Research And Engineering Journals
• Publisher: IRE Journals
• e-ISSN: 2456-8880
• Volume/Issue: Volume 5 Issue 11 May-2022

Abstract

This paper presents elaborates on the methods involved in the acquisition, processing and interpretation of borehole geophysical data in Abuja (F. C. T) and its environs. The F.C.T is almost predominantly underlain by high grade metamorphism and igneous rocks of Precambrian age. The aim of the work is to delineate the subsurface geoelecteric sequence and its parameters, Identify the weathered or aquifer unit and determining the extent and Determining the depth of the borehole and the lithological sequence. Based on the field mapping and acquisition of resistivity data using the Omega resistivity meter otherwise known as the Terrameter,processing of the resistivity data using software such as IP2win or Interpex and interpretation, the depth to the fractured aquifer was determined to be between 50m to 70m. The geophysical survey was conducted using the electrical resistivity methodand the schlumberger array was employed for VES to a total AB/2 separation of 100m and MN/2 of 5m. Recorded resistivity values are converted to apparent resistivity using standard conversion factors. The apparent resistivity values in this area range between 50 and 1000. The apparent resistivity curve types corresponding to the area are the K and H curve typeswhich may suggest deepor shallow aquifers respectively.

Keywords

Aquiclude 3, Aquifuge 3, Current electrode 5, Hydrological cycle 2, Potential electrodes 5, Terrameter 1.

Citations

IRE Journals:
Offiaukwu Kenneth Chinonso "The Processes Involved in The Acquisition, Processing and Interpretation of Geophysical Data for Borehole Drilling in North Central Basement Terrains of Nigeria with Case Study in (F.C.T.)" Iconic Research And Engineering Journals Volume 5 Issue 11 2022 Page 162-167

IEEE:
Offiaukwu Kenneth Chinonso "The Processes Involved in The Acquisition, Processing and Interpretation of Geophysical Data for Borehole Drilling in North Central Basement Terrains of Nigeria with Case Study in (F.C.T.)" Iconic Research And Engineering Journals, 5(11)