Patent ID: 8869900
Filing Date: 2014-10-28
Classification: E21B,F16L

Abstract:
1. An offshore drilling riser apparatus for use in offshore drilling for oil or other fossil fuels, the offshore drilling riser apparatus comprising: a plurality of offshore metal drilling riser sections coupled serially end-to-end, wherein each of the offshore metal drilling riser sections, prior to being coupled to another offshore metal drilling riser section, comprises: an offshore metal drilling riser section tube haying a first end and a second end; a first metal riser flange that is mechanically joined to the first end of the offshore metal drilling riser section tube, forming a first mechanical joining; a second metal riser flange that is mechanically joined to the second end of the offshore metal drilling riser section tube, forming a second mechanical joining; and wherein the offshore drilling riser apparatus is capable of withstanding dynamic loads exerted by an offshore drilling rig and a body of water in which the offshore drilling riser apparatus is suspended, based on: