Mud Acid 2 : An inexact term, usually meaning a mixture of hydrochloric (HCl) and hydrofluoric acid (HF), HCL/HF. HF will dissolve some silicates and some of the components of drilling mud
George E. King Engineering, 5000 Oilfield Terms: A Glossary of Petroleum Engineering Terms, Abbreviations and Acronyms, US 2010. http://gekengineering.com/Downloads/Free_Downloads /Glossary_of_Petroleum_Engineering_Terms_25_August _2010.pdf, (Oil - Amer) {593}