ConocoPhillips, Tesco Corp., and Schlumberger Ltd. successfully tested rotary-steerable casing drilling in South Texas, combining directional drilling technology with casing drilling. "Each of these ...
A project in which existing 7-in. liners were tied back to surface then cemented stopped casing leaks in the Sarir and Messla oil fields in Libya. Many wells operated by Arabian Gulf Oil Co (AGOCO) in ...