Isopach maps of the 3-finger dolomite and M1A-M2 intervals show that both intervals vary in thickness by less than 4 ft throughout most of the Hutchinson study area.

Subtle localized thinning (by 3-5 ft) of the M1A-M2 isopach occurs at DDV #64, which may by linked in some way to the July 2001 venting of gas from the M1A interval in this well.

Last updated June 2004