Lincoln has been producing flexible composite drill pipe for short-radius, horizontal drilling since 1991. Its nominal 2.375 inch /60.3 mm (OD), 30 ft/9m long pipe shaft is filament wound with 12K ...

The fundamental arrangement when drilling an oil well involves an outer casing and an inner drillpipe with a drillbit on its end, each continuously extending as the well drives ahead. This allows ...

The study of drill pipe failure analysis and fatigue testing is critical in understanding the mechanisms behind fracture and degradation in drilling operations. Research in this field integrates ...

HOUSTON — To hear the people at Baker Hughes tell it, a drill string — length after length of narrow pipe that can extend for miles into the earth — is far from a rigid assembly of high-strength steel ...