The traditional approach to 4D design and planning is a powerful tool in understanding the likely results of any particular scenario. Design through simulation brings the acquisition strategy into the equation. The process runs through a complete acquisition simulating each line based on the acquisition strategy, these can include:
- Continuous shooting
- Waiting for optimal feather matching
- Waiting for feather matching to within a set limit (e.g. match to within 3 degrees)
Outputs from this process include:
- Acquisition statistics for each scenario, survey duration, turning time, waiting time
- Realistic repeatability maps
- Expected feather matching
- Used to calibrate technology options, spreads, etc to set an expectations for given acquisition strategies
This method of survey design provides a more realistic and detailed view of the key project metrics. The technique can be applied to all forms of acquisition including standard single vessel 4D, dual vessel 4D, undershooting, OBC, nodes, etc.