(n.) Drilling. Outside or outer diameter. Casing and tubing are commonly described in terms of inside diameter (ID) and outside diameter. Ant: inside diameter. Alt. form: outside diameter
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}