Petrophysical analysis by its very nature is a highly visual process. When you see a problem in a logplot or histogram, it makes sense that you would want to make a correction right there. PowerLog makes it easy for you to do just that. All changes are immediately reflected everywhere the affected data appears.

When viewing a logplot, for example, you may see a need to make a depth shift. All you need to do is select editing mode and make your adjustment. This is very fast and completely logical.

Normalization is another change that is easily made through either the crossplot or histogram. For example, if the calibration was off in one well, you can fix it with a bulk shift or gain and offset. PowerLog petrophysics software supports dual interval display during multi-well editing—you simply identify a soft interval and a hard interval and use them to calibrate the entire log. PowerLog can even auto-normalize if you have a series of wells that require the same fix.

As a final example, the Synthetic Curve Generator allows you to predict curves in wells where data is missing and to automate bad-data editing. For a curve that has problems, select a good section and PowerLog uses linear regression analysis to fix the problem. PowerLog outputs the equations, which you can cut and paste into a MathPack if you want. The Synthetic Curve Generator can also be used for facies classification.

Advanced interpretation capabilities let you calculate clay volume, porosity, lithology and water saturation with a variety of simple and complex lithology and shaly sand modules. PowerLog also provides environmental corrections from all of the major logging companies including Schlumberger, Halliburton, Baker Atlas, and Sperry-Sun.