Volume 3, Issue 2, December 2019, Page: 46-59
Suitability of Some Nigerian Barites in Drilling Fluid Formulations
Ugochukwu Ilozurike Duru, Department of Petroleum Engineering, Federal University of Technology, Owerri, Nigeria
Anthony Kerunwa, Department of Petroleum Engineering, Federal University of Technology, Owerri, Nigeria
Ifeanyi Omeokwe, Department of Petroleum Engineering, Federal University of Technology, Owerri, Nigeria
Nnaemeka Uwaezuoke, Department of Petroleum Engineering, Federal University of Technology, Owerri, Nigeria
Boniface Obah, Department of Petroleum Engineering, Federal University of Technology, Owerri, Nigeria
Received: Sep. 10, 2019;       Accepted: Oct. 11, 2019;       Published: Oct. 24, 2019
DOI: 10.11648/j.pse.20190302.13      View  545      Downloads  72
Abstract
In order to counter-balance the formation pressure, the drilling mud is weighted up using a chemical additive, usually Barite. The usability of locally sourced Nigerian Barites on the major types of drilling fluids in conventional conditions is presented. Water-Based mud, Oil-Based mud and Synthetic-Based mud formulations with locally sourced Barite were tested according to the American Petroleum Institute recommended practices. Hole cleaning capabilities of the formulations by the use of Cutting Carrying Index (CCI) and Cutting Concentration (CC) as indicators showed that Osina, Gabu and Obubra Nigerian Barites are suitable for use as drilling fluid additives; with Cutting Carrying Index in the range of 23.27 to 120.54 for Water-Based mud, 0.89 to 3.98 for Oil-Based mud and 0.45 to 1.13 for Synthetic-Based mud. The Cutting Concentration of average of 4.15 vol. % at 355gpm and 300ft/hr ROP for Water-Based mud, Oil-Based mud and Synthetic-Based mud, with MAXROP of 364ft/hr under the same conditions was recorded. Moreso, laminar flow regime in the annulus was predicted for all the mud types under the same conditions and temperatures specified, based on a MATLAB programme developed to perform the computation. Cutting Carrying Index for water based mud decreased from ambient, 120°F, 180°F to 240°F compared with API mud used as control sample.
Keywords
Cutting Carrying Index, Cutting Concentration, Barite, High-Pressure-High-Temperature, Mud Formulations
To cite this article
Ugochukwu Ilozurike Duru, Anthony Kerunwa, Ifeanyi Omeokwe, Nnaemeka Uwaezuoke, Boniface Obah, Suitability of Some Nigerian Barites in Drilling Fluid Formulations, Petroleum Science and Engineering. Vol. 3, No. 2, 2019, pp. 46-59. doi: 10.11648/j.pse.20190302.13
Copyright
Copyright © 2019 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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