NIGOGA - The Norwegian Industry Guide to Organic Geochemical Analyses.
Edition 4.0, 30 May 2000.
Published by Norsk Hydro, Statoil, Geolab Nor, SINTEF Petroleum Research and the Norwegian Petroleum Directorate
NIGOGA is an electronic document containing guidelines for the performance and reporting of organic geochemical analyses of well samples (rocks and fluids) as applied in the Norwegian petroleum industry. Its intention is to improve standardisation and comparability of the analytical results and their presentation.
NIGOGA is an industry guide and not an official regulation or norm, but the Norwegian Petroleum Directorate recommends its use.
NIGOGA consists of an Analysis Guide and a Reporting Guide.
The Analysis Guide describes the following aspects of each type of analysis :
Minimum requirements
Recommendations, information
The Reporting Guide contains general guidelines for reporting and digital data transfer.
NIGOGA puts, where possible, more emphasis on the specification of the result (quality) than on the description of the analytical procedures. Where possible, it recommends, and sometimes requires, the use of the Norwegian Geochemical Standard (NGS) samples as a reference and sets acceptance criteria for selected test parameters. These criteria are largely based on the results from an intercalibration project, carried out in 1994 - 1997 by the Norwegian Petroleum Directorate (NPD). Thirty two laboratories from Europe, USA and Australia participated in this project. More information about the availability of NGS samples and results of the intercalibration is given in the NGS Newsletters (NPD 1998).
The NIGOGA document (Adobe PDF format, 1.6 Mb) can be downloaded free of charge. It can be read using the freely available Adobe Acrobat Reader 4.0 or a more recent version. (Acrobat Reader 3.0 may cause minor formatting problems.)
For statistical puroses, we kindly ask you to fill in the form below before you access the NIGOGA. The information provided will not commit you or your employer as we will use this information exclusively for the purpose of creating statistical summaries (numbers and types of institutions by country, number of visits, etc.). These summaries may be made available to the public. Names, affiliations and e-mail addresses will be accessible only to the committee that updates the NIGOGA, and will not be made available to third parties.