English to Portuguese Tech/Engineering Petroleum Eng/Sci

This is part of a Field Development­ Plan presented by a Swiss Company

- Net pay and cutoff analysis

There have been many different approaches to quantifying cutoffs, with no single method emerging as the definitive basis for delineating net pay yet it is imperative that cutoffs are fit for purpose (Worthington and Cosentino, 2003)

Chevron Texaco proposed in 1998 a NTG cutoff at 10% effective net sand porosity (ELAN analysis) considering the same porosities range from 15 to 22% in the various intervals tested by DST.