... erosion rate maximum erosion rate straight pipe erosion test asia government flexible pipe particle size rate distribution highest erosion rate thickness loss upstream oil & gas china government bend pipe thickness carcass coupon pipe particle sand particle size position...

... ABSTRACT The structure of unbonded flexible pipe is complicated that the characteristic of bending behavior is not clear. Based on the flexible pipe simplified to a spiral wire and cylindrical structure, a three-dimensional finite element model is developed with interaction between layers...

... upstream oil & gas china government pitch length analytical method united states government europe government equation torsion helix coil stiffness curve length asia government helix flexible pipe tensile load contact stiffness calculate helical structure twisting helical...

... are presented and deployed to verify the numerical results. The research results show the application condition of the analytical expressions and benefit the cable/umbilical/flexible pipe designers. INTRODUCTION Helical wires have played a key role in flexible structures such as flexible pipes, umbilicals...

... steel, stainless steel, etc. Nowadays, Resource development moves to the deep sea from the shallows gradually, and the weight of the flexible pipe has increased following the deepened of oil and gas exploitation, so comes with the broader size of the platform. Traditional steel is with deficiencies like...

... ABSTRACT Ultrasonic-based particle measurement is developing rapidly, but no research has been conducted on the measurement of ore particles inside multilayer flexible pipes. In this paper, based on theoretical analysis and simulation, the measurement of ore particles inside multilayer...

... upstream oil & gas piping design lateral displacement flexible pipe engineering piping simulation displacement pipe section proceedings ovalization cross section interaction american petroleum institute internal pressure gay neto midstream oil & gas offshore pipeline...

... ABSTRACT The carcass layer of flexible pipe adopts the structural form of interlocking wrap, which leads to its inner surface not being smooth and having gaps. The fluid transported at high speed in the pipe may contain sand or solid impurities. These impurities will impact the gap between...

... ABSTRACT In deep-water applications of flexible pipes, particular attention needs to be paid to the birdcaging failure, which occurs more likely when the outer layers are damaged. This paper presents a FE model for the birdcaging analysis of a flexible pipe with damage on the outer layers...

... ABSTRACT The present paper addresses the stresses developing, inside the End-Fitting (EF), on the tensile armour wires of a metal based unbonded flexible pipe under axial tensile operational loads. To this end, a bidimensional finite element model that estimates the stress state of tensile...

... FRPM (Fiberglass Reinforced Plastic Mortar) pipelines with a large-diameter to examine the changes of the deformations of pipes and the earth pressure distribution due to the sheet pile extraction. Yoshimura et al. (1997) conducted centrifuge tests for single buried flexible pipes to investigate...

... ABSTRACT We developed a new method of reducing tsunami damage on the coastal structures such as petroleum industrial complexes and energy storage tanks by the use of long flexible cylindrical pipes. From the previous experiments, we observed that our flexible pipes could reduce the tsunami...

... ABSTRACT Several model tests related to two flexible pipes in tandem and side-byside were performed. It was found that the response of the downstream pipe attributed to the interference of vortex induced vibration (VIV) is dependent on the reduced velocity of the upstream cylinder, as well...

... ABSTRACT Flexible pipes, which can be divided into bonded and unbonded types, have been applied in the oil industry for years. An unbonded structure, the so-called flexible steel pipe, can drastically hoist the resistance of the pipe to pressure, tension and torsion and in the meanwhile, could...

... monitoring upstream oil & gas tracer casing design valve enhanced recovery testing system flexible pipe scp detection wellbore wellhead production string diagnostic testing helium tracer concentration test system production control production logging Diagnostic Testing of Gas Wells...

... Research on Thermal and Pressure Cycle Influence of Flexible Pipes Yuanchao Yin1, Qingzhen Lu2,3, Lidong Wang1, Jia Zhang2, Qianjin Yue2,3 1 Department of Engineering Mechanics, Dalian University of Technology Dalian, Liaoning Province, China 2 School of Ocean Science and Technology, Dalian...

..., the sensitivity analysis is also carried out to examine the influence of various design parameters, such as critical curvature, slip stiffness and etc. The purpose of this research is to tentatively propose new assessment procedures to standardize the dynamic response analysis of flexible pipes in offshore...

... ABSTRACT Metallic strips flexible pipe has been favored in the offshore pipelines engineering for its good corrosion resistance, high strength, easy installation etc. This new composite pipe can be regarded as promising alternative for submarine pipelines. In this paper, the cross-sectional...

... with abandonment in-place. A specifically engineered thixotropic gel solution was used to displace seawater from around the breach location mitigating the rate of carbon steel corrosion due to contact with oxygenated seawater. INTRODUCTION Flexible pipe technology has been utilized in the offshore oil and gas...

... fatigue tests conducted on tensile armor wires on non-pitted and pre-pitted specimens, in air and sea water. This work is expected to influence the fatigue test design and qualification, and engineering criticality assessments of flexible risers. KEY WORDS: Flexible pipe risers; accelerated pitting...