METHOD AND APPARATUS FOR CONNECTING DRILLING RISER STRINGS AND COMPOSITIONS THEREOF

摘要

A riser apparatus for use in offshore drilling for oil or other fossil fuels, the riser apparatus comprising: a plurality of riser sections coupled serially end-to-end, wherein each of the riser sections comprises: a tube having a first end and a second end; a first flanged that is mechanically joined to the first end of the tube; a second flanged that is mechanically joined to the second end of the tube; wherein the tube is constructed of an aluminum alloy; and wherein the flanges are constructed of the aluminum alloy; and wherein the riser apparatus has a length of approximately 1,500 meters or greater. PCT/USO8/61801 08-07-2008 REPLACEMENT SHEET WO 2008/134650 PCT/US2008/061801 SUBSTITUTE SHEET (RULE 26)