2.3.4.1. Correcting raw data

Raw data from the analysis should be corrected before evaluation, interpretation and reporting to the end user. Examples of corrections are:

• Correction for background radiation;

• Correction for radioactive decay;

• Corrections for chemical yields and counting efficiency;

• Conversion to concentration units required by the end-user (tritium units (for tritium labelled tracers only), Bq/L, Bq/g, etc.).

2.3.4.2. Data availability

Analytical results should preferably be compiled in a database system that is accessible by the end user at any time.

2.3.4.3. Recording data

Data should be compiled continuously along the timeline as soon as a new analysis has been performed and presented in tables with a clear identification of

the reservoir and the well label in the table heading. Data may, in addition, be presented in the graphs or curves (production profiles for instance) for easier evaluation and interpretation (improved perception).

2.3.4.4. Reporting

Various types of report may be required:

• Report of the experimental activity describing the whole process up to, and including, tracer injection;

• Brief reporting (e. g. by email) upon completion of the analysis of each received batch of samples;

• Final report upon completion of the whole project which presents the full range of data and summarizes the major findings which can be extracted by a simple qualitative evaluation of the data before any quantitative interpretation.