(n.) Production Testing. A tubular placed at the bottom of the subsurface sucker-rod pump and inside the gas anchor to drive the formation fluid with little or no gas into the pump. See: Gas Anchor
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}