Overflush : The fluid that is pumped after the last reactive or active part of a stimulation to displace the stimulation down to (displacement) or into (overflush) the formation
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}