PfEFFER-java Web Site

(Petrofacies Evaluation of Formations for Engineering Reservoirs)

PfEFFER-java will replace PfEFFER Pro which is a practical tool for the real-time, interactive log analysis. "Spreadsheet" database and graphic features allow both rapid interaction and comparative evaluation of multiple interpretations or best case/worst case extremes. In addition, multiple zones are easily managed. This Applet is an interactive web application that allows the user to search & load data from the user's PC or from the Kansas Geological Survey (KGS) database & file server.

Note: PfEFFER-java has the appearance of an Excel Workbook. This present model does not allow modification of the raw data in the cells of the "Spreadsheet". Although the "Spreadsheet" data can be saved, this web app will rebuild the "Spreadsheet" from the original raw log data and parameters selected by the user. The PfEFFER sessions will be saved as a Log ASCII Standard (LAS) version 3.0 file. PfEFFER Pro will not be able to recover data from this file.


  Main Page(this page)
  DescriptionPfEFFER-java Description
  AppletJava Application accessible from the browser.
  HelpHelp with PfEFFER-java Web Application Dialogs.

Developing software takes time and effort. If you like our web tools and would like to help support future versions, please consider making a donation! Donations of all sizes are appreciated.

We accept checks payable to the Kansas Geological Survey (KGS). Checks must be in US$ and drawn on a U.S. bank.

Kansas Geological Survey
1930 Constant Ave.
Lawrence, KS
66047-3726 USA
To assist administration please add "Pf-java" in the "For" section of the check.
You may contact us
by e-mail at
by phone 785-864-2100
by fax 785-864-5317

Author: John R. Victorine

The URL for this page is