Effect of Shaliness on Water Saturation Estimation: Case Study of TN Field Niger Delta

  • Abbey CHukwuemeka Patrick 1Department of Petroleum Chemistry and Physics, School of Arts and Science, American University of Nigeria Yola
  • Orenuga Israel Abayomi
  • Okpogo Emele Uduma Geosciences Department, University of Lagos

Abstract

This study was carried out to estimate the effect of shaliness on water saturation from TN field of Niger Delta. The conventional Archie and the Shaly-sand water saturation models was used in the evaluation of wells. Two sand bodies (Sand 01 and 02) were mapped with thicknesses range from 76.8ft to 119.3ft across the three wells for Sand 01 and 187.5 to 339.9ft across wells TN_1 and TN_4 for Sand 02. The cross plot of the effective porosity (φe) versus volume of shale (Vsh) show a decrease in the effective porosity with an increase in shale volume. This reveals a laminated shale pattern across the reservoir sands. The estimations from the conventional method and the Shaly-sand models of Simandoux and Indonesia show a clear disparity due to the shaliness of the reservoirs, suggestive of over estimation of water saturation of the reservoirs by the conventional model due to the presence of shaliness.

Published
Mar 28, 2018
How to Cite
PATRICK, Abbey CHukwuemeka; ABAYOMI, Orenuga Israel; UDUMA, Okpogo Emele. Effect of Shaliness on Water Saturation Estimation: Case Study of TN Field Niger Delta. Iraqi Journal of Science, [S.l.], p. 510-519, mar. 2018. ISSN 2312-1637. Available at: <http://scbaghdad.edu.iq/eijs/index.php/eijs/article/view/256>. Date accessed: 24 sep. 2018.
Section
Geology