Understanding many of the factors that go into designing and costing 3-D marine streamer survey. There is no unique survey geometry which meets the geologic requirements in all areas. In addition to design criteria, factors such as available equipment, timing, currents and tides, physical obstructions, and environmental concerns also impact the survey design and cost. In this course the fundamental technical criteria of survey design are balanced with both operational and commercial considerations to enable the participants to design cost effective surveys which satisfy the explorationist’s needs. This course will also provide managers the necessary knowledge to develop simple time-motion studies and relate them to estimating survey costs.
Duration
Two Days
Who Should Attend?
Geoscientists, engineers and/or managers who have a basic understanding of the principles of land or marine 2-D seismic exploration and wish to expand that knowledge into the acquisition and costing of 3-D surveys in a blue water (streamer) marine environment. Deepwater nodal surveys will also be discussed.
Outline
- Introduction
- Why 3D?
- Historical overview
- Project timeline
- Geophysical parameter selection
- Spatial sampling calculations using:
- Dips (using both straight and curved rays)
- Diffraction energy
- Bin size
- Stratigraphic objectives
- Migration aperture calculations using:
- Dips (using both straight and curved rays)
- Diffraction energy
- Fresnel Zone
- DMO/Pre-Stack Migration aperture
- Other acquisition attributes
- Fold
- Azimuth considerations
- Blended acquisition
- Spatial sampling calculations using:
- Parameter Selection Exercise
- Survey design and equipment selection
- Streamer acquisition
- Ocean Bottom Node acquisition
- Combination of streamer and OBN
- Economic considerations
- Time-Motion Exercise
- Bidding the job
- Permitting
- Health, Safety, and the Environment
- Positioning
- Field work and quality control
- Questions/discussion/review
