Infiltration 5 : The flow of a fluid into a substance through pores or small openings. Commonly used in hydrology to denote the flow of water into soil material. (Bul D11)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}