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contributor authorP. F. Ansquer
contributor authorS. A. Antalovsky
date accessioned2017-05-08T23:15:18Z
date available2017-05-08T23:15:18Z
date copyrightJune, 1983
date issued1983
identifier issn0195-0738
identifier otherJERTD2-26390#201_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/96969
description abstractThe stability of jack-up rigs with spud-cans, particularly during the jacking-up and preloading operations, has always been critical in soft soil conditions. In the offshore areas opened to prospection in Cameroon, unconsolidated clays and silts are frequent, and therefore the need to conduct these critical operations with maximum safety is of utmost importance. The monitoring of soil reactions at the spud-cans and of structural loads at the jack-houses enabled jacking operations to be conducted safely, in an area where other rigs previously encountered severe difficulties (capsizing). Data recorded by instrumentation have shown that leg maneuvering with soil penetrations of up 40 m (131 ft) may induce dangerous overloads to the structure. The continuous monitoring and control of soil reaction forces and structural loads during drilling ensured the safety of the rig. For jacking-down, the monitoring of the loads was necesary to control the structural stresses induced by the legs pulling out. To the authors’ knowledge, no similar measurements have been reported in the past.
publisherThe American Society of Mechanical Engineers (ASME)
titleRig Jacking on Soft Soil Foundations: Improvements in Safety and Speed by Monitoring Leg Loads
typeJournal Paper
journal volume105
journal issue2
journal titleJournal of Energy Resources Technology
identifier doi10.1115/1.3230903
journal fristpage201
journal lastpage204
identifier eissn1528-8994
keywordsSafety
keywordsStress
keywordsSoil
keywordsJack-up drilling rigs
keywordsJacks (Lifting equipment)
keywordsOcean engineering
keywordsInstrumentation
keywordsDrilling
keywordsForce
keywordsStability AND Measurement
treeJournal of Energy Resources Technology:;1983:;volume( 105 ):;issue: 002
contenttypeFulltext


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