Fish 4 : Any object left in the wellbore during drilling or workover operations that must be recovered before work can proceed. v: To recover an object (fish) left in a wellbore during drilling or workover. (WLOP)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}