A frame drilling rig

As mechanization made the hunt for hydrocarbons more ef-ficient, it had a direct efect on land rig design. The first land rigs were. . As industry stepped out beyond the reach of land-based piers, platform rigs were installed on large steel “jackets”, the bottom-supported frames supporting the rig substruc-ture,. . Industry’s improved understanding of accessing tight-per-meability formations, especially shale rock, has also impact-ed rig design. In today’s. . Older versions of the tender-assist type platform rigs uti-lized a moored barge alongside the platform, with a ramp that led from the barge to. [pdf]