Is vertical migration assumed?
We initially assume that vertical migration is occurring and that the horizontal offset is less than +/- 7%. So, for a deposit at 5000 ft., we would expect the “cone” for vertical migration for a specific point to be approximately 100 yds. radius. We also expect that the geologists working the area will be aware of potential fault or other subsurface structures that might cause an abnormal side slippage of the gas migration path.