Effect of Temperature on Scale Formation Around the Wellbore and Hole Cleanup for Reconditioned Drilling Mud

Seteyeobot, Ifeanyi and Orodu, O. D. and Enaworu, E. and Olawole, K.P. (2017) Effect of Temperature on Scale Formation Around the Wellbore and Hole Cleanup for Reconditioned Drilling Mud. International Journal of Applied Engineering Research, 12 (2). pp. 172-178. ISSN 0973-4562

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Abstract

Oil based muds are very complex fluids composed from water, oil, organophilic clays and various additives. Their very good filtration and lubricating properties make their use beneficial in numerous drilling operations. Formation and deposition of scale in wellbore and porous media due to extensive use of oil based mud for drilling at different pressures and temperature is a problem that results in production decline. A variety of models are presently being used in the oil industry for predictiong scaling tendency and scale precipitation inside the wellbore and immediate wellbore region. Some of the precipitated BaSO4 scale escapes through the pore spaces to render havoc to flow in the production string. This research is an experimental study that presents a Solution [X] (based on experimental analysis) for effective wellbore and open hole clean up of a producing well drilled with Oil Based Mud at different temperatures, especially at offshore locations where seawater is mostly encountered. Results from this study shows that cleanup using referred Solution [X] at low temperatures yields high success cleanup rate of BaSO4 scale precipitation as well as when used at high temperature regardless of the effect of temperature change on solubility of BaSO4 scale.

Item Type:	Article
Subjects:	T Technology > TN Mining engineering. Metallurgy T Technology > TP Chemical technology
Divisions:	Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User:	Mr. Efeoghene Enaworu
Date Deposited:	06 Sep 2017 10:34
Last Modified:	09 Apr 2019 13:15
URI:	http://eprints.covenantuniversity.edu.ng/id/eprint/9103

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