Hydraulic Gradient 3 : The quotient obtained by dividing the difference in pressure between any two points along a line of flow by the distance between the points of measured pressure. (Bul 10C)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}