Swabbing 2 : Planned lifting of well fluids to the surface using a piston-like device installed on a wireline. Swabbing may inadvertently occur due to piston action as pipe or assemblies are pulled from the well. (RP 54)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}