| 摘要 |
A vertical subsea tree (21) is operated by a subsea control module (47) supplied with hydraulic and electric power from the surface via umbilical 45. Landing sub (27) connects to and is run into the vertical subsea tree (21) through riser (23). The landing sub (27) engages mating penetrations (41) on an upper portion of the master valve block (33) of the vertical subsea tree (21) to supply flow passages (37) extending from the penetrations (41) and through the master valve block (33)to the subsea control module (47) on the exterior of the tree. The subsea control module (47) is then operated through the landing sub umbilical (45) to control operation of the vertical subsea tree (21).
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