... management complex reservoir artificial intelligence fatigue life crack size api 17tr8 fcgr curve fatigue analysis requirement geometry fatigue failure frequency fatigue screening test data load histogram offshore technology conference fracture mechanic Continued Challenge...

... allocation resulting in low acoustic fatigue life. Most of the AIV-related failures can be attributed to high cycle fatigue failures at the geometrical discontinuities in the pipework. Small-bore discontinuities on the main header tend to display lower acoustic fatigue resistance than large diameter...

... by different operations, such as hydraulic fracturing. The objective of this study is to diagnose the fatigue behavior that caused by cyclic changing of pressure and temperature during different well operations. The main scope of the study is based on the fatigue failure cases in previous literature laboratory...

... Abstract Casing pipe or joint fatigue failure could happen either during drilling in rough offshore operations or production due to alternating temperatures and cyclic loading of pressure or during stimulation, specifically, multistage hydraulic fracturing, due to temperature differentials...

... and commercially efficient solutions especially when high temperatures and pressures are involved. However, in terms of fatigue, SCRs are very sensitive to environmental loading. The procedure for fatigue analysis is essentially deterministic. This paper concentrates on the probability of fatigue failure...

... inspection frequency ndt inspection inspection programme risk management risk assessment offshore technology conference upstream oil & gas module otc 18912 fatigue failure event tree risk and uncertainty assessment consequence topside structure fpso structural component...

... shedding on corrugations of the innermost layer of the flexible riser carcass. These pressure pulsations can be sufficiently extreme to cause vibration induced piping fatigue failures, for example to small-bore connections on both topside and subsea piping. The problem has been seen to occur for gas flow...

... at operational dynamic and static pressures with a gas flow of natural gas. This methodology was used to test a replica of the Flow Termination Assembly currently deployed sub-sea on Schiehallion. The work showed that a fatigue failure was indeed possible, but the necessarily unfavourable condition had...

... & gas fatigue failure probabilistic inspection planning otc 10848 subsea system prediction reliability level failure probability inspection planning detection probability reliability Copyright 1999, Offshore Technology Conference This paper was prepared for presentation at the 1999...

..., fish bite. Perhaps the most important factor affecting their life, however, is "fatigue". Fatigue failure has been defined as "the failure of a structure by repeat loading". This definition embraces failures due to creep, hysteretic, structural realignment and abrasion in cycling as well as failures...

... to cracking and spalling. Repeated cycling into high compressive ranges causes a substantial increase in creep, reducing the effective prestress. Confining reinforcement resists lateral deformation and delays compressive fatigue failure. Cycling into the tensile range a large number of times can produce...

... should contain conspicuous acknowledgment of where and by whom the paper 15 presented. Abstract A technique for prediction of fatigue failure of the tubular joints commonly found in offshore structures is described. The method is based upon fracture mechanics principles and crack growth data. A com...

... fatigue loading, tapered gusset plate joints in which diametrically opposite regions of the web member section are restrained fail at a lower number of load cycles than non-tapered gusset plate joints. Fatigue failure has been defined as the number of alternating load cycles at which a fatigue crack...

..., TOTO II, was terminated after 4t years service in Nov., 1966. The moor's premature failure was caused by axial corrosion fatigue of two 1i-in.- diameter wire rope risers. 1,2 Examination of a wire rope that fails in service frequently reveals the cause to be fatigue failure of individual wires...

... ABSTRACT The fatigue of welded tubular joints, as found in offshore structures, is explored by developing a qualitative model of fatigue behavior. The model is then used, along with basic concepts from fracture mechanics, to develop an analytical model for the prediction of fatigue failure...