This is the metadata section. Skip to content viewer section. In this paper, the process of crack propagation is investigated using the extended finite element method at the mesoscale to study the ...

A drill bit is what actually cuts into the rock when drilling an oil or gas well. Located at the tip of the drillstring, below the drill collar and the drill pipe, the drill bit is a rotating ...

New, automated closed-loop steering devices are significantly reducing deviations from ideal wellpath in horizontal wells. These devices immediately counteract deviations from the planned path through ...

Used to rotate the drill string during the drilling process, the top drive is a motor that is suspended from the derrick, or mast, of the rig. These power swivels boast at least 1,000 horsepower that ...

EnCana Corp. had a new rig built for reverse-circulation airlift drilling to prevent lost-circulation through thick, fractured, vuggy basalts. Encana was faced with drilling Miocene basalt sections as ...