... JIP is to investigate methodologies for assessing remaining fatigue life of the corroded mooring chain used for floating production systems. The JIP scope includes fatigue testing in labs and finite element analysis (FEA) of corroded chain samples retrieved from six floating production facilities...

... and dynamic applications, combining high pressure high temperature conditions with ultra-deep water environmental loads. Many qualification tests are described, including burst tests, pressure cycling tests and bending fatigue test with angle and tension variations representative of conditions encountered...

... embrittlement, so as to ensure their suitability for those offshore opportunities. subsea system grain size metallic material suitability mpa mooring system sea water new grade mechanical test high strength steel synthetic sea water fatigue test offshore technology conference synthetic sea...

... subjected to high levels of applied strain. A Joint Industry Project (JIP), funded by Petrobras, BG Group, Saipem, Tenaris, Technip, Cladtek and HMC, was run by TWI Ltd and INTECSEA to investigate and generate data on CRA lined pipe. The JIP included full scale resonance fatigue testing, allowing...

... understand the OPB mooring chain fatigue mechanism and propose some mooring chain fatigue design recommendations. This paper summarizes the various test programs that were implemented within the more than 6 years long project, including full scale fatigue tests on chains, a quasi static OPB stiffness...

... and components and then a detailed two phase evaluation of the test insert. Fatigue testing was completed June 14, 2012. The results and conclusions of this testing provide insight into the expected behavior of polyester mooring ropes and potential testing problems. Microscopic inspections using SEM were done...

... for bend fatigue of fibre rope exists. In the SIRIUS JIP, cyclic bend over sheave fatigue tests were performed within normal industry range of safety factors. The bend fatigue tests show a slightly better fatigue life for the engineered fibre ropes tested at higher safety factors when compared to multi...

... of smaller diameters (Gibson 1980, Potts & Chaplin 1990, Müller 1961) but very little experience was documented on ropes over 90mm diameter. Further investigations showed that no such test facility was available to perform bending fatigue tests on large diameter ropes of 109 mm. Based on these findings...

... on the FPSO. application installation floating production system upstream oil & gas ool hose trelline tm hose trelleborg pipe diameter mooring system fpso un-bonded flexible pipe trelline tm requirement flange pressure drop fatigue test steel pipe resistance subsea system...

... connections for tubing/casing which were developed to stand cyclic loads and reach an extended number of cycles under such conditions. The development process of an integral connection for casing sizes targetting very demanding applications comprised Finite Element Analysis (FEA) and Full Scale Fatigue Test...

... of the production risers design. Today the production prototypes of such risers are being tested [3]. otc 16185 upstream oil & gas alloy flange service line strength riser tensile test technology conference coupling riser section drilling riser fabrication aluminum alloy fatigue test...

... stiffener well control internal pressure drilling equipment requirement annular pressure drilling fatigue test offshore technology conference coupling decompression flexible pipe application upstream oil & gas stiffness OTC 15167 Improvement of bonded flexible pipes acc. to new API...

... of the fatigue test were evaluated. History of Use In the spring of 1999 Unocal Indonesia began planning an eight to ten well deepwater exploration drilling program in 1,676 m to 1,981 m water depths offshore East Kalimantan in the Makassar Strait. At that time Unocal's surface stack drilling capability from...

... and 2 million cycles. Under sinusoidal and stochastic loading conditions, both mean load and strain amplitude is shown to affect modulus. Equations allowing these variables to be quantified are presented. During high cycle fatigue testing, for a given mean load/load range combination, modulus has been...

... collapse, axial tension, burst and dynamic bending fatigue tests. The philosophies and methodologies used in the qualification process are discussed and compared with the requirements and guidelines in the most recent standards for flexible pipe, namely API Spec 17J [I] and API RP 17B [2]. Introduction...

... Abstract The paper will present the results of the joint industry study into the fatigue resistance of large diameter anchor chain', and discuss the interpretation of the results. The study represents the largest body of well documented corrosion fatigue tests on a variety of different chain...

... between the external metal-to-metal seal and the external torque shoulder, radial thread interference, and high resistance to fatigue was developed, Finite element analyses and fullscale static, sealability, and fatigue tests verified that the connector satisfied all design requirements. The full-scale...

... be introduced through the brace: axial tension, in-plane-bending, and out-of-plane-bending. offshore technology conference equation otc 7798 offshore tubular joint research center stress range tubular joint design line lawrence thicknesseffect weld toe subsea system fatigue test floating...

... of the study are given in 1. While optimized repair weldingparameters were used in the present study and the fatigue tests were carriedout in air, the effect of weld imperfections as well as of corrosive seawaterenvironment will be included in further stages of the project. weld block program test...

... in the light of premature service failure of these joints on some structures. The paper examines the alternative approach against current methods and presents data on fatigue test performance to support the case for S-N curve classification to class F per UK Guidance Notes. INTRODUCTION The requirement...