AIM:The Tooroopie Seismic Survey was designed to address three main concepts:1. To further detail existing features and to mature sites for further exploration wells;2. To extend good regional coverage into areas of sparse or earlier poor data with the object of investigating known structural and stratigraphic leads and developing possible leads in these areas;3. To provide good data ties between uncontrolled areas and existing wells as part of a framework for future surveys.Specific seismic programmes were tailored for each of 9 areas to satisfy these aims. In particular the investigation of the separation between the Moomba and Big Lake fields involved the acquisition of an experimental 24-fold reflection seismic line, 75-JAR, to test the usefulness of high-effort data for porosity determinations and direct hydrocarbon detection.METHODS: Survey dates: 22/4/75 - 17/11/75. Energy source: Vibroseis. CDP coverage: 1200% (except line 75-JAR which is 2400%). Recording mode: 24 channel digital - DFS 111 recorder. SP/VP interval: 75-150 metres, group interval: 75-150 metres (3 different spread geometries were used, depending on line location - see final report for exact description).63 new lines totalling 1 115 line km of 12-fold reflection seismic data were acquired in the Gidgealpa, Moomba North Dome, Moomba Southwest, Daralingie, Bulyeroo, Kirby, Burke-Dullingari, Kidman and Toolachee-Mulga areas.RESULTS:The increase in structural and stratigraphic information from within the prospective Permian section has matured some drilling sites, and has enabled existing structural leads to be more fully investigated. In addition, new structural and combination structural/stratigraphic leads have been defined in areas of known hydrocarbon potential.