Tensioning arrangement for a subsea wellhead assembly

Tensioning arrangement for a subsea wellhead assembly

A pre-tensioning arrangement for inner and outer elongate concentric members (10, 12) comprises a load member (19) which is axially moveable in an actuating direction relative to the inner member (10) and has an outer surface which tapers in said actuating direction, a laterally expansible ring (21)...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: EMMERSON ROBERT
Format: Patent
Sprache:eng
Schlagworte:
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Beschreibung
Zusammenfassung:A pre-tensioning arrangement for inner and outer elongate concentric members (10, 12) comprises a load member (19) which is axially moveable in an actuating direction relative to the inner member (10) and has an outer surface which tapers in said actuating direction, a laterally expansible ring (21) which is engaged by said load member (19) in an inclined engagement zone during the actuating movement, and an engagement zone between the laterally expansible ring (21) and the outer member (12), said engagement zones providing a mechanical advantage between the movement of the load member and movement of the outer member (12).