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02497 REPRODUCIBILITY IN ROTATING CYLINDER AUTOCLAVE TESTING OF CORROSION INHIBITORS

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Product Number: 51300-02497-SG
ISBN: 02497 2002 CP
Author: G. Ruschau, D. Blumer, and G. Harris
Industry: Oil and Gas Production
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A rotating cylinder autoclave test has been used to screen corrosion inhibitors for field testing. A number of seemingly insignificant variables have been found which can greatly affect the measured corrosion rate in the test which can affect the relative ranking of the inhibitors evaluated in the test. These variables include the brine stability, rotation smoothness, CO2 pressure, coupon metallurgy, test duration, and selected inhibitor dosage. Other variables were noted in the course of the work and their effects on results quantified. The reproducibility of the test method has been significantly improved by elimination of each variable in a systematic manner. Keywords: Inhibitor, rotating cylinder autoclave, CO2 corrosion
A rotating cylinder autoclave test has been used to screen corrosion inhibitors for field testing. A number of seemingly insignificant variables have been found which can greatly affect the measured corrosion rate in the test which can affect the relative ranking of the inhibitors evaluated in the test. These variables include the brine stability, rotation smoothness, CO2 pressure, coupon metallurgy, test duration, and selected inhibitor dosage. Other variables were noted in the course of the work and their effects on results quantified. The reproducibility of the test method has been significantly improved by elimination of each variable in a systematic manner. Keywords: Inhibitor, rotating cylinder autoclave, CO2 corrosion
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02276 WHY CORROSION INHIBITORS DO NOT PERFORM WELL IN SOME MULTIPHASE CONDITIONS: A MECHANISTIC STUDY

Product Number: 51300-02276-SG
ISBN: 02276 2002 CP
Author: Hongbin Wang, Hongwei Wang, Hua Shi, Cheolho Kang, and Paul W. Jepson
Publication Date: 2002
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Results of inhibitor performance at slug flow in a 101.6 mm inner diameter horizontal pipeline. Electrochemical Impedance Spectroscopy (EIS) and scanning electrom microscope (SEM) techniques are used to reveal that the strong bubble impact, high shear stress and turbulent intensity are the reasons for a poor performance of inhibitor.
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02299 CO2 Corrosion of L-80 Steel in Simulated Oil Well Conditions

Product Number: 51300-02299-SG
ISBN: 02299 2002 CP
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02274 EFFECTIVENESS OF CORROSION INHIBITORS IN RETARDING PROPAGATION OF LOCALISED CORROSION

Product Number: 51300-02274-SG
ISBN: 02274 2002 CP
Author: A. Turnbull, D. Coleman, A.J. Griffiths, P.E. Francis, and L. Orkney
Publication Date: 2002
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In many service applications excursions in solution chemistry, temporary loss of inhibitor, or transient increases in temperature may give rise to localised corrosion. To test the return of inhibition when the loss is remedied, the use of an artificial pit has been investigated using simulations of cooling water and of of oil production formation water.
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