Abstract

Periodic reservoir surveillance in terms of saturation monitoring and movement of fluid contacts owing to prolonged production is of paramount importance for keeping alive any mature field. Apart from drilling new wells, another way out to maintain sustained production may be optimizing the production from old wells. Tapping the bypassed oil and monitoring the movement of OWC in time lapse are required to get sustained oil production from old wells. One of the available methods to estimate the present day oil saturation behind casing is Cased hole formation resistivity measurement.