CARROLLTON, Texas--(BUSINESS WIRE)--Varel International, a leading manufacturer of drill bits and a global supplier to the drilling industry, announces the development of the CaseBit™ advanced casing ...

Conoco Inc., Houston and Tesco Corp., Calgary, commercialized the Casing-Drilling process by signing a multiyear, multiwell contract, which they say is their first for Casing-Drilling services. The ...

ConocoPhillips, Tesco Corp., and Schlumberger Ltd. successfully tested rotary-steerable casing drilling in South Texas, combining directional drilling technology with casing drilling. ConocoPhillips, ...

Through the marshes of southern Louisiana 14 months ago, an oil-drilling rig was towed into position and a 20-in. drill casing firmly planted in the muck. Fort Worth Oil Drillers Sid Richardson and ...

WASHINGTON — Several days before the explosion on the Deepwater Horizon oil rig, BP officials chose, partly for financial reasons, to use a type of casing for the well that the company knew was the ...

WASHINGTON Internal documents from BP show that there were serious problems and safety concerns with the Deepwater Horizon rig far earlier than those the company described to Congress last week. The ...