Regulations 34, 35 and 36 under the Energy Resources Act 2000 require that geophysical progress, operations and interpretation reports must be furnished to the Minister by the holder of a petroleum or geothermal licence on a periodic basis. Regulation 34 requires geophysical progress reports to include information on activities undertaken, location of campsites, status of processing or reprocessing, and a specific report on any reportable incident that has occurred during the reporting period. Regulation 35 requires that a geophysical operations report be submitted. A broad listing of the information required is included in the regulation. Regulation 36 requires that an interpretation report be provided. The report must include according to good industry practice the following: an evaluation of the data; interpretation of horizons and structural mapping; discussion of interpretation methods employed; discussion on leads and prospects; and maps of key horizons. This guideline has been prepared to facilitate the submission of geophysical reports and to indicate what is to be included to meet the requirements of the regulations mentioned above. Submission of reports should not be confused with submission of geophysical data which is the subject of regulation 37 and for which a separate guideline is available. Geophysical data in this context is essentially the information recorded in the field or subsequently processed.