Contains open hole drillstem test raw field data, contractors' results and reservoir engineers' interpretation reports for the Patchawarra Formation (Upper production zone) and Tirrawarra Sandstone (Lower production zone) gas reservoir modified isochronal gas production tests and reservoir pressure build-up surveys conducted over the periods 12 September - 4 October and 19- 25 September 1988 respectively, plus PVT study reports relating to fluid samples taken in the above tests, in addition to contractors' tabulated vitrinite reflectance and organic petrological data, results of annual flowing and static wellbore pressure/temperature gradient surveys, results of separate reservoir pressure build-up surveys run over both gas reservoirs in December 1989, September 1990, October 1991 and May 1993, and results of liquids evaluation tests (LET) conducted over the Lower zone in November 1990 and over the Upper zone in March 1992.