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Undersjøisk brønnavslutningsarrangement og fremgangsmÕte for Õ avslutte en undersjøisk brønn
Undersjøisk brønnavslutningsarrangement og fremgangsmÕte for Õ avslutte en undersjøisk brønn
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机译:封闭海底井的安排和终止海底井的程序
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摘要
A slimbore marine riser (124) and BOP (120) are provided for a subsea completion system which includes a tubing spool (TS10) secured to a wellhead at the sea floor (106). The tubing spool has an internal landing profile for a reduced diameter tubing hanger (th12) which is arranged and dimensioned to pass through the bore of the riser and BOP at the end of a landing string (LS). The tubing hanger, designed to be sealingly positioned in the tubing spool landing profile, has a production bore and a relatively large multiplicity of electric (E) and hydraulic (H) passages which terminate at a top end of the hanger with vertically extending electric and hydraulic couplers. A passage (A12) is provided through the body of the tubing spool which provides communication from above the tubing hanger to the well annulus below the hanger. A remotely controllable valve (V12) is placed in the annulus bypass passage.
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