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OtwaySPAN Multi-Client 2D Marine Seismic Survey

Activity type Seismic survey
Activity subtypes
Submitted by GX Technology Corporation
Submission date 18 December, 2014
Subtype New
Decision date 04 June, 2015
RMS ID 3024
Status Finalised
Outcome Accepted
Link to previously accepted EP

Mr Graeme Eastwood
Project Solutions Director – Asia Pacific
ION Geophysical Corp.
Level 3, 267 St Georges Terrace
Telephone: + 61 8 9211 6143

Location map (click to enlarge)
Location map - Activity: OtwaySPAN Multi-Client 2D Marine Seismic Survey (refer to description)

The total survey line length will be up to ~11,000 km covering an area of ~665,000 km2 (Figure 2-1). The survey area lies entirely in Commonwealth waters adjacent to South Australia (SA), Victoria (VIC) and Tasmania (TAS) states. Data acquisition will occur along predefined sail lines within the survey area; the exact positioning of the sail lines is yet to be determined, but are unlikely to be placed less than 25 km apart with the majority spaced at greater distances. Indicative sail lines are shown in Figure 2-1 although these may change as the survey schedule is finalised. All sail lines will occur within the survey area boundary and will not enter State waters (even where the survey area may overlap with State waters, for example King Island and Deal Island).
During the proposed activities, a survey vessel will traverse the pre-determined sail lines within the survey area at a speed of approximately 8-9 km/hr. As the vessel travels along the sail lines a series of sound pulses (approximately every 20 seconds) will be directed down through the water column and seabed. The sound is attenuated and reflected at geological boundaries and the reflected signals are detected using sensitive pressure and velocity sensors arranged along a streamer towed behind the survey vessel. The reflected sound is then processed to provide information about the structure and composition of geological formations below the seabed in an attempt to identify potential hydrocarbon reservoirs.
The proposed operational area spans over a wide range of environments between 30 to 6,000 m water depths both on and off the continental shelf, in canyons and on large flat sandy bottoms.
ION proposes to conduct 2D seismic data acquisition activities within a defined survey area in Commonwealth waters (OtwaySPAN) within the data acquisition season of November to May over a three year time period, commencing in Q4 2015, at the earliest.
Note:  This information has been extracted from the EP Summary. Please refer to the attached EP Summary for more information.

Other Details
Locations Gippsland, Otway, South Australia, Tasmania
Commonwealth waters adjacent to South Australia , Tasmania , VIC
Titles (or other instruments)
Current Documents (Finalised)
EP Document

Location map