Peptized Clay 2 : A clay to which an agent has been added to increase its initial yield. For example, soda ash is frequently added to calcium montmorillonite clay. (Bul D11)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}