wells it is critical
to invasion of oil or water based drilling fluids during
drilling activities must be discounted during formation
fluid analysis. The Tracerco Core Invasion Measurement
technique is used to determine the level of drilling fluid
invasion into formation samples. Prior to the start of
drilling operations through a zone of interest, a specialist
oil or water compatible chemical tracer is added to
the mud system providing a constant concentration of
tracer throughout the drilling mud system.
For Core Invasion Measurement, as drilling progress a series of mud samples are taken at specific drilling depths. Interpretation of the mud sample and core fluid tracer concentration analysis provides:
In addition, contamination of bottom hole samples can be measured using the same technique.
A customer needed to measure the degree of fluid invasion during formation core drilling activities in order to accurately assess the amount of original oil in place.