The following is a list of computer codes that have been distributed in recent years or will be released in the near future. We will continuously improve these codes, and incorporate users’ suggestions in the improved versions.
| File Name | Release Date (Approximate) | Description |
|---|---|---|
| TCR98 | Q1 1998 |
Forward simulation of through-casing resistivity sensor based on generalized transmission line model; non-uniform, finite-length casing. |
| INVDIP2 | Q2 1997 |
Computes automatic inversion of induction logs in dipping beds, where borehole and invasion effects are ignored. The software is applicable to logs obtained in formations with dip angle ranging from 0 to 85 degrees. The induction tools may be ILM, ILD, 6FF40, or 6FF28. By a simple modification of a subroutine, this software can cover any other induction tool as long as its coil configuration and operating frequency are known. Up to 4 inverted resistivity profiles can be obtained. |
| SNDFWD | Q2 1994 |
Simulates electromagnetic wave propagation in time-domain due to an electric current pulse in 2D infinite formations. The transmitter is assumed to be of electric current type and is oriented in the z direction in cylindrical coordinates. Formations are assumed to be azimuthally symmetric. No variation in the f direction is assumed. The z component of the electric field in the time domain, can be computed at any receiver location. Two-dimensional transmission-line matrix (TLM) method in the cylindrical coordinates is used in the simulation. |
| EMFWD | Q3 1992 |
Computes electromagnetic wave propagation between a transmitting coil and one or more receiving coils either in the same or in a separate borehole. The earth formation is assumed to have symmetry in the azimuthal direction. The transmitter current may either be a pulse or a cosinusoidal wave with a fixed frequency. The 2D transmission-lime matrix (TLM) method is used to calculate the signal detected by a receiver. |