The vast majority of the logs used are small-scale SP/GR resistivity. The Regional grid (R Series) is composed of NW-SE SW-NE trending cross-sections and is the largest

The remaining cross-sections using small-scale logs are lumped into the Miscellaneous (M Series). Most of these are another grid of N-S E-W oriented cross-sections located in the eastern part of the area covered by the R Series. The M Series also contains many shorter cross sections that were constructed for smaller-scale projects - the most prominent in the Glenn Pool area.

The cross-sections using large scale Porosity logs (P Series) are located mostly in Nowata, Craig and Rogers Counties.