METHOD AND APPARATUS TO CONTROL FLUID FLOW FROM SUBSEA WELLS

摘要

The present invention is directed to methods and apparatus to construct subsea wells with redundant parallel fluid flow control systems to allow new methods to stop subsea blow outs. More specifically, this invention provides methods and apparatus to construct subsea wells with a plurality of redundant parallel paths allowing for the first time drill pipe and other intervention conduits, wire line, and fluids to be deployed below a damaged drilling riser and or a damaged blow out preventer through a separate blow out preventer and riser system presented in this invention.

主权项

1. A method for the construction of a subsea well fluid control system, comprising:
connecting a distal end of a subsea multi-path apparatus to a subsea well wherein the subsea multi-path apparatus comprises at least two separate proximal ends converging to said common distal end of a subsea wellhead; connecting a first subsea closure apparatus above a first proximal end of said subsea multipath apparatus, wherein the first subsea closure apparatus comprises a blow out preventer system, wherein said blow out preventer system comprises at least one of an annular bag, a shear ram, and a pipe ram; connecting a second subsea closure apparatus above a second proximal end of said subsea multipath apparatus, wherein the second subsea closure apparatus comprises a blow out preventer system; connecting a distal end of at least one riser conduit above said subsea closure apparatus wherein said at least one riser conduit has the proximal end at or near the surface of the sea; and forming a sealed hydraulic conduit from at or near the surface into the subsea wellhead by hydraulically sealing connections of said fluid control system including said subsea wellhead, subsea multi-path apparatus, at least one subsea closure apparatus, and at least one riser conduit.