Schlumberger

Evaluating and Monitoring Reservoirs Behind Casing 

Evaluating and Monitoring Reservoirs Behind Casing
Publication: Oilfield Review
Volume: 15
Issue: 2
Publication Date: 06/01/2003

Advanced formation-evaluation services accurately determine porosity, lithology, shale content, fluid saturations and pressure, and recover formation-fluid samples in cased holes. Innovative tool designs and processing software make formation evaluation behind casing a viable option to evaluate bypassed zones, intervals that must be cased before openhole logs are run, and the effects of time on producing zones. This article examines how exploration and production companies cost-effectively deploy novel cased hole services in difficult operating environments.