Corrosion engineers in the oil and gas producing industry are often charged with the responsibility of evaluating and controlling the quality of injection waters. Unfortunately, much of the data available is inadequate, misleading. or difficult to interpret. This standard has been prepared by NACE Task Group T-1C-12, a component of Unit

Committee T-1 Con Detection of Corrosion in Oilfield Equipment, and is issued by NACE under the auspices of Group Committee T-1 on Corrosion Control in Petroleum Production to provide standard test methods for use in evaluating water quality for injection waters.

 1.1 This standard describes two test methods for evaluating water quality for subsurface injection: Procedure A-Rate vs Cumulative Volume (for water quality monitoring) and Procedure B-Suspended Solids Test (for diagnosis or monitoring). The methods are intended to provide standardized water quality in the petroleum production industry. The test methods describe the apparatus required, test conditions, test procedures, reporting procedures, and supplementary tests. Interpretation of the results is beyond the scope of this standard. The bibliography will supply a source of interpretation methods.

1.2 The injection behavior of subsurface formations varies widely, and interpretation of the results of water quality tests is empirical. Application of the results obtained by these tests, therefore, will be strongly influenced by the requirements of each subsurface injection project. This standard provides procedures for monitoring water quality routinely to ensure that it meets previously determined empirical water quality requirements and supplies standard quantitative methods for use in diagnosing water quality problems and determining water quality for subsurface injection projects.

1.3 This standard is applicable only when precautions are observed to ensure that the sample is representative of the water in the system of interest. It is not the purpose of this standard to imply that the results or their interpretation may be arbitrarily applied to other water injection projects.

Historical Document 1984