Volume IX Issue XII

01

Prediction of Scale Formation in Crude Oil Production along the Well-Bore As A Result of Incompatible Waters

Madu, Clement O, Fadayini, N.A. Folami and S.K. Bello · December 2020 · pp. 01-06

:Formation and deposition of scale in porous media due to extensive use of seawater for oil displacement and pressure maintenance is a problem that results in production decline and loss of billions of dollars to the petroleum industry yearly. A variety of models are presently being used in the oil industry for predicting scaling tendency and average scale precipitation inside the reservoir. In this work, the prediction of scale formation was done by developing a computer program using Excel, and reservoir parameters data were imputed into the programmed models to obtain results which were used in plotting graph to analyse what happen along the wellbore during production as a result of injection of seawater which is likely to pose scaling threat to the wellbore at any time interval. Findings from the results and graphs obtained proved that the major threat to scale formation along the well bore (sulphate scale precisely) is pressure drop across the skin, the skin factor and the pore volume of water injected with respect to the amount of the sulphate scale precipitated.

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