F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
F16L 1/26 (2006.01)
Patent
CA 2369366
A diverless process of tapping a pressurized subsea pipeline (12) without removing the pipeline from service. The process includes the steps of lowering and landing a measurement tool (30) onto the pipeline in order to check ovality and straightness of the pipeline. Pipe lift frames (36, 38) are lowered and landed onto the pipeline spaced from a chosen location. The pipeline is lifted by hydraulic actuators or mechanical screws on the lift frames. A hot tap machine and accompanying orientation frame are lowered from the surface and landed on the pipeline between the pipe lift frames. A fitting clamp is secured to the pipeline. A hot tap machine (60) is lowered onto the hot tap fitting and orientation frame(62). The pipeline is then tapped with the hot tap machine.
Procédé sans plongeur de branchement d'un pipeline (12) sous-marin sous pression sans mettre le pipeline hors service. Le procédé comprend les étapes consistant à faire descendre et poser un outil de mesure (30) sur le pipeline afin de contrôler l'ovalité et la rectitude du pipeline. Des cadres de levage (36, 38) de conduite sont abaissés et posés sur le pipeline de manière espacée d'un point choisi. Le pipeline est soulevé par des actionneurs hydrauliques ou des vis mécaniques sur des cadres de levage. Une machine de prise directe et un cadre d'orientation concomitant sont descendus depuis la surface et posés sur le pipeline entre les cadres de levage de la conduite. Un positionneur de montage est fixé au pipeline. Une machine (60) de prise directe est descendue jusque sur le cadre (62) de montage et d'orientation de prise directe. Le pipeline est ensuite branché à la machine de prise directe.
Cross Donald W.
Decker Larry
Exley Gern D.
Hicks David J.
Mccoy Richard W.
Smart & Biggar
Williams Field Services Gulf Coast Company L.p.
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