Modeling the Sonic and Density Response From Regression
Since CEC is not readily available in most wells, this approach was not terribly practical. However, by recognizing other work that related CEC to gamma ray log response, the equation becomes:
similar equation for density is:
These models are decidedly not simple and a great deal of calibration is required to make them work. Practitioners should refer to the original paper for details of the method. In addition, a sophisticated multiple linear regression program is required.
- Multiple Regression Editing
examples are contained in the original paper and are well worth
reviewing. See "Automatic editing of travel time and density
logs", Patchett,J.G.; CWLS Trans, 1991.
Page Views ---- Since 01 Jan 2015
Copyright 2023 by Accessible Petrophysics Ltd.
CPH Logo, "CPH", "CPH Gold Member", "CPH Platinum Member", "Crain's Rules", "Meta/Log", "Computer-Ready-Math", "Petro/Fusion Scripts" are Trademarks of the Author