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Velseis prides itself on its ability to design specialised acquisition services to suit any situation, with extensive experience in conventional 3D and 2D reflection, as well as multi-component, heli-portable and shallow marine. Our extensive design experience in oil-and-gas and coal seismology provides the
technical background for emerging diversification into new-industry sectors, including critical hard-rock minerals, carbon sequestration, and waste engineering.

For Vibroseis surveys, we can offer three options. The highly manoeuvrable Envirovibe (Peak Force 15,000 lbs) is ideal for shallow to intermediate targets and well suited for environmentally sensitive areas. Similarly, the INOVA Univib (Peak Force 26,000 lbs) has a small footprint with environmental advantages. For surveys requiring significant ground force, we provide the INOVA AHV-IV Renegade. With a Peak Force of 80,000 lbs, these are the largest Vibroseis sources available in Australia, with engineering features optimised for broadband recording.

Offset and azimuth diagramAcquisition parameters for 3D reflection surveys are designed to provide optimum imaging at target depth, subject to economic constraints. Shot and receiver lines are positioned so as to minimise the acquisition footprint. In staged surveys, special attention is given to ensure smooth merge zones.

We are able to produce a comprehensive 3D design or advise appropriate parameters for 2D surveys in consultation with the client. The proposed design parameters are based on the depth to target(s), the energy source to be employed, and a range of logistical and economic considerations. Industry-standard design software is used for production design, with in-house software used for specialised projects (e.g. converted-wave). Our survey design provides the basis for project planning, including quotation for the project.

Seismic design map