Mudding Up 2 : Process of mixing drilling fluid additives to achieve some desired purpose not possible with the former fluid which usually has been water, air, or gas. (Bul D11)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}