20.9 Anti-collision Scanning and Reporting

Recommended practice is to observe the following rules when scanning wells for collision risk against a subject well;

1. On first pass, scan all wells in the field.
2. Be sure to pick up all the potential hazard wells.
3. Be sure to include plugged and abandoned wells, appraisal wells, wells drilled by other operators and wells drilled by other directional drilling companies.
4. Scan all wells to all depths at a close interval (30 ft or 10 m).
5. Document that you have checked with the client and they have verified that your database contains the same number of wells located in the same locations as their database.
6. Check that the hazard wells highlighted present no surprises to the client.
7. Thereafter scan reports may be done filtering on separation factor equal or larger than 4.0.