“We have worked with 3esi-Enersight over the past 6 years to help manage our portfolio of operated and non-operated offshore fields. In that time, we have found 3esi to be responsive to our requirements, and the software to be robust and reliable. Building up the database of actual expenditures and …

“In the past, much as we took the greatest care in the analysis of prospect volumetrics and risk, we didn’t have any appropriate means by which we could check the consistency of our assessments, or the absence of bias. RAPT™ (Risk Analysis and Portfolio Tracking Software), has provided Tullow with …