Basic Proposition
- Satellite surveying has improved to a level where it may be used as an alternative to ground surveying or airborne LiDAR for onshore oil and gas projects.
- Satellite surveying is useful for detecting and correcting gross survey errors.
- Uncertainty in surveying causes delays at many phases of oil and gas projects. A study of a typical onshore project shows that higher accuracy surveying earlier in the project greatly reduces delays.
Agenda
- Introduction to Satellite surveying
- Validating accuracy
- Real world examples
- Evaluating the value of surveying
Four key technical components enabling elevation mapping from space
- High resolution stereo satellite photos
- Graphics Processing Units (GPUs)
- Adaptation of seismic processing systems
- Oil Sands surveying - Characterize the satellites and optimize the process
PhotoSat Algorithms
- Based on Seismic algorithms
- Achieve 4x better accuracy when compared to conventional photogrammetric algorithms
- No image warping
- Can assess accuracy compared to ground control
- Consistent throughout the area
- “Experience database” can be incorporated
- Ft McMurray and other projects have allowed us to identify systematic errors.
- Ideal for GPU processing
- 20x better throughput
- Allows iteration during QC
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