51316-7635-A Kinetic Study of Barium Sulphate Formation with the Presence of Scale Inhibitor in a Flow System

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Product Number: 51316-7635-SG

ISBN: 7635 2016 CP

Author: ogbemi Bukuaghangin

Publication Date: 2016

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The formation of barium sulphate is a persistent problem affecting the oil and gas industry. Due to its high insolubility and resistance to chemical/mechanical treatment it is difficult to remove when formed. Barium sulphate formation could be predicted using thermodynamic models; nevertheless it is imperative to understand the kinetics of barium sulphate in order to predict more accurately the rate at which these scales are being formed and to identify the correct remediation technique. Several researches have been conducted on the kinetics of barium sulphate both in bulk precipitation and on surface deposition; however these studies were often conducted in a closed system (e.g. bulk jar test) and measurement were taken off-line. In this study an experimental technique has been designed to study both kinetics processes in-situ in an open system and measurement were taken in real time.This work presents a kinetic study of barium sulphate with the absence and presence of scale inhibitors (diethylene triamine penta methylene phosphonic Acid (DETMP) and poly-phosphino carboxylic acid (PPCA)) on bulk precipitation and surface deposition. In the study turbidity probe was used to follow the bulk precipitation whereas surface deposition was assessed by analysing image taken of the stainless steel sample at different time intervals.