Subsurface permeability is a measure of how well liquids flow through below-ground rocks and soils. It is a key parameter that determines subsurface flow and transport processes in watersheds. However ...

Flood discharge and stream scour studies at pipeline mountain stream crossings alone cannot adequately protect a pipeline where other, more-hazardous processes are possible. Studies have shown that ...

Oil field operators can use several practical equations for calculating flow rates of natural gas through venturi gas-lift valves. For critical flow, this analysis derived such equations from a ...