Standard: NACE 1D182

WHEEL TEST METHOD USED FOR EVALUATION OF FILM-PERSISTENT CORROSION INHIBITORS FOR OILFIELD APPLICATIONS

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Scope:

Introduction

The test method presented herein (the so-called "wheel test"1,2,3) is versatile in that it has often been adjusted to test a variety of inhibitors and has been performed on various test specimens. Its versatility has also enabled modifications to specific test variables, such as temperature, film life, surface conditions, concentration of corrosive agents, and oil-to-water ratios. With respect to its versatility, the test is similar to other tests with the same general intent. The low level of reproducibility of test results is considered by some to offset the advantages of its versatility. Reproducibility problems seem to be encountered when the test is performed by more than one technician. A single technician appears to be more likely to reproduce his/her own results on a regular basis. This report describes the wheel test and discusses the various conditions in which it has been used. The wheel test is a dynamic test performed by placing fluids (oil, water, and inhibitor) in a 200-mL beverage bottle with a metal test specimen, purging with a corrosive gas, and capping the bottle. The bottle generally has then been agitated for a period of time by securing it to the circumference of a "wheel" and rotating the wheel. After agitation, the test specimens have been transferred to another bottle containing no inhibitor (only corrosive fluids) and agitated for a longer period of time. At the end of this time, the metal test specimen has been removed and cleaned and the mass loss has been measured.

Techniques used in each step of the test procedure are described.

Organization: NACE International
Document Number: nace 1d182
Publish Date: 2005-01-01
Page Count: 4
Available Languages: EN
DOD Adopted: NO
ANSI Approved: NO
Most Recent Revision: YES
Current Version: YES
Status: Active

This Standard References

Showing 2 of 2.

NACE 1D166

Standards That Reference This Standard

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