Marine

Selecting the seismic technology, survey type and acquisition parameters to characterize your reservoir requires a multi-million-dollar decision. There are an infinite number of combinations of acquisition styles and parameters, resulting in survey costs that vary by more than an order of magnitude. For example, an exploration multi-client 3D can cost less than $5,000/km2, while a development OBN survey have traditionally cost in the order $100,000/km2 (although that cost is trending down).

In between these two technologies is a plethora of options, including MAZ, WAZ, TopSeis, PentaSource, Coil, 3D DAS VSP, GeoStreamer, NOAR and Sercel MS. Most seismic contractors specialise on one type of acquisition (either towed streamer or OBN) and have “proprietary” techniques that they insist will be the most-effective solution (e.g. GeoStreamer, Penta-source, TopSeis, Coil, Sparse OBN, 3D DAS VSP). In contrast, PHASE GEO offers impartial advice, free of contractor bias.

Each reservoir has a unique set of issues that warrant a detailed survey design (e.g. structural complexity, shallow heterogeneity, water depth, AVO characteristics, access issues). PHASE GEO performs analysis and modelling to determine the appropriate technology, survey type and sampling required to deliver fit-for-purpose data.

Marine seismic survey design services include:

• Legacy data review
• Survey modelling (OMNI or MESA)
• Ray-tracing
• Data processing tests
• AVO modelling
• Finite Difference Synthetics
• Comparisons of synthetics to real data
• Supplemental information recommendations
• Pre-survey parameter tests and analysis
• Field trial design and analysis

Contact Jon at PHASE GEO to create a bespoke marine survey (jon@phasegeo.com).