Hydraulic Well Workover : A snubbing job in which the well is workover without killing the well with fluid. Usually accomplished by multiple barriers that seal on the tubulars
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}