INVESTIGATION OF FRESH WATER AQUIFER DELINEATION USING INTEGRATED GEOPHYSICAL METHODS AT LA SIEN WATER PRODUCTION FACTORY ALONG AZIKIWE ROAD, PORT HARCOURT, NIGERIA.  

Authors

  • Ibim, D.F Department of Physics, Ignatius Ajuru University of Education, Port Harcourt, Nigeria
  • Amaechi, B.U. Department of Geology, Rivers State University, Nkpolu, Nigeria

Keywords:

Resistivity, downhole logs, vertical electrical sounding, groundwater, borehole drilling

Abstract

An integrated geophysical investigation for freshwater aquifer delineation was carried out along Azikiwe road opposite BUA factories in Port Harcourt, Rivers State. The study integrates the electrical, well drilling and downhole logs for the delineation of freshwater aquifer for potable drinking water production and supply. Drill samples using rotary rig were collected for correlation with the log data. Electrical downhole log using ABEM SAS 200 log was used for the spontaneous and normal resistivity logs, to determine the appropriate position of the sand screen. Log results perfectly correlated with the earth resistivity measurements. The vertical electrical survey (VES) employed using Schlumberger array is an effective, quick, reliable, and economic means of obtaining details about the electrical characteristics of the subsurface. The pre-drilling investigation is aimed at furnishing information on the nature and thickness of different subsurface layers in order to assess the potability of the aquifer for water production and supply. The results obtained in this work show that apparent resistivities of the formation vary with certain aquifer characteristics. The topsoil is mainly made up of sandy materials with different degrees of compaction and saturation. The sub soil indicates varying degrees of resistance which increase with the spread. The drill depth of 70 m, resistivity of 324 ohm-meter and thickness of 42.1m were recommended

Downloads

Published

2024-07-08

How to Cite

Ibim, D.F, & Amaechi, B.U. (2024). INVESTIGATION OF FRESH WATER AQUIFER DELINEATION USING INTEGRATED GEOPHYSICAL METHODS AT LA SIEN WATER PRODUCTION FACTORY ALONG AZIKIWE ROAD, PORT HARCOURT, NIGERIA.  . BW Academic Journal, 1(2), 44–55. Retrieved from https://bwjournal.org/index.php/bsjournal/article/view/2087