Gunk 1 : (n). Production Testing. Debris, dirt, paraffin, oil, mill scale and rust removed from a pipeline when a scraper or a pig is used for cleaning purposes. See: pigging
Schlumberger Ltd. (The World's Leading Supplier Of Technology, Integrated Project Management And Information Solutions to Customers Working in The Oil and Gas Industry Worldwide), Schlumberger Oilfield Glossary Cedex, France 2014. http://www.glossary.oilfield.slb.com/en/Terms/sym/ a.aspx, (Ergo - Brit) {766}