51313-02659-Development of Test Methods and Inhibitors for Halite Deposition in Oilfield Water Treatment

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Product Number: 51313-02659-SG

ISBN: 02659 2013 CP

Author: Kimberley Ho

Publication Date: 2013

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Halite scale is one of exotic deposition experienced in the oilfield especially for HTHP wells with low water cut. The inhibition of halite formed in oilfield is notoriously difficult. High concentration of inhibitors always provided limited inhibition performance. In addition it is extremely difficult to test the halite formation and inhibition in the laboratory.

Static jar testing is the major test method used in oilfield scale industry to evaluate the performance of halite inhibitors. It provides some information about halite inhibition but not representative for the dynamic field conditions and with very limited understanding of the mechanism of halite inhibition especially for halite inhibitors with dispersive effects. Unlike the traditional static jar test a newly developed MeOH driven static jar test methodology using an ultra-sonic technique and a dynamic efficiency loop method have been developed to evaluate the halite deposition under both static and dynamic conditions. They provide effective and quick ways to evaluate the performance of halite inhibitors.

Several halite inhibitors have been developed and tested under both static and dynamic conditions. Combining the test results from these two newly developed methods the mechanisms of halite inhibition can be addressed especially for the dispersive halite inhibitors.
A field application case history demonstrating the successful implementation of a recently developed halite inhibitor using these novel test methods will also be presented. The cost analysis of the successful field treatment will be provided.

This paper will present a comprehensive study of halite formation and inhibition including halite prediction development of test methods performance evaluation procedure inhibition mechanism and field application.