... ABSTRACT A precise prediction of seabed stability involving the fluid-pipe-soil interaction can lead to significant cost reductions by optimising design. Unlike previous investigations, a three-dimensional numerical model for the wave-induced soil response around an offshore pipeline...

... ABSTRACT With the increase of human activities at sea, it is inevitable that anchors drop into the water due to operating errors, which may lead to failure of pipelines and cause economic damage and environmental pollution. Previous methods of related analysis are mostly based on the DNV-RP...

... ABSTRACT Previous studies on the lateral instability of the pipeline seldom paid attention to the detailed breakout process at the pipe-soil interface, where the sliding and the rolling mechanism could be coexistent and competitive. In this study, a series of experiments on the steady flow...

... ABSTRACT The on-bottom stability of a submarine pipeline is a flow-pipe-soil coupling problem. For the integrated pipe-soil system under the action of steady current, two correlated instability modes could be involved, i.e., the lateral-instability of the pipeline and the tunnel-erosion...

... ABSTRACT The impact of dropped objects and trawl board on submarine pipelines are simulated by a non-explicit finite element method. The new method works in three mechanics. The impact process is simulated by adjusting the material properties. The damage of the pipeline is solved using Cowper...

... Dynamic Response of Pipeline in Touchdown Zone under complicated loadings Yun-yun Dai, Jing Zhou State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology. Dalian, Liaoning, China ABSTRACT The touchdown zone (TDZ) is the most important part of the steel catenary...

... Abstract This paper introduces the Shenzhen-Hong Kong submarine pipeline of West to East Gas Pipeline II Project. In specific environmental conditions and submarine pipeline's situation, we carried on the risk identification for pipeline suspending, drop anchor impacting and ship aground...

... 0.002 W/cm2. This effect represents practical interest in decreasing extreme starting loads on pumps of technological pipelines especially in polar or pre-polar winter conditions. The result may be also important for crude mineral oil pipeline transportation from polar and pre-polar fields. KEY WORDS...

... of the underground gas storages. The storage facilities quantity is going to be decrease with opening new areas of gas pipelines and development of existing pipe systems "Ukhta - Torzhok", "NTR - Torzhok" and "Sakhalin - Khabarovsk - Vladivostok". At the present time there are works on finding the optimal locations...

... ABSTRACT: When tides flow over the ocean floor, they exert dynamic pressure on the porous seabed, and consequently result in oscillatory pore pressure and seepage in the seabed. Stability of the large-diameter pipelines under construction immersed in the seabed may be influenced by the excess...

... pipeline (Bambuliak and Frantsen, 2009). It is important to provide interactions between the gas companies by working out of logistical schemes of LNG transportation. Definition of optimum technical parameters of bulk carriers and other 188 Proceedings of the Ninth (2010) ISOPE Pacific/Asia Offshore...

... the authors are looking at the environmental risks of oil transport activity in the Russian Federation s Far East offshore regions. The ecological risks which emerge during the functioning of the pipeline system and oil trans-shipping terminal are presented. A modeling of oil spills spreading are suggested...

... by a pipeline to an onshore receiving terminal; Concept 3 considers offshore facilities connected by a pipeline to existing infrastructure located in the surrounding area. Based upon the same oil and gas reserves and production profiles, the three concepts were compared in terms of investment cost and economic...

... platforms has once again attracted the industry attention. It has been used in recent large oil field development in West Africa. This combined system has many advantages in developing China oil & gas fields in shelf area. For the areas lack of infrastructure, such as pipelines, this approach provides...

... ABSTRACT: Ocean-current-induced pipeline stability on sandy seabed was simulated physically in a flow flume. The process of pipeline losing onbottom stability in currents was recorded and analyzed. Experimental data show that, for a pipeline directly laid on sandy seabed, there exists a linear...

... sensor acoustic wave method detection corrosion midstream oil & gas pipeline stabilization submarine pipeline leak platform development mode pipe wall oilfield submarine pipeline hui sun corrosion protection offshore pipeline upstream oil & gas metal loss oil field...

... ABSTRACT: The theoretical analysis and the statement of problem of optimization of a spatial orientation of the subsea pipeline route taking into account the magnitude of its burial depth and a bottom configuration on the basis of probabilistic approach from the point of view of a mathematical...

... a 12 kIn plpelme and Is then comlngled and piped to shore along a 19 kIn, 324mm diameter pipeline. 5 FigureS. Perch and Dolphin monotowers prior to load-out Subsea Completions The development of the Seahorse and Tarwhlne fields Is another break from Bass Stcilt's tradltlonal marmed platforms. Economic...

... ABSTRACT: Development of offshore oil and gas fields involved the necessity of installation of multiple underwater pipelines to transport oil and natural gas. In the past intensive research has been conducted in the USSR into various theoretical and practical aspects of the marine pipe line...

... of underwater oil and gas pipelines in a certain soil to ensure their safety and reliability. To determine the conditions of formation and characteristics of grounded ice hummock, complex investigations of ice regime elements have been carried out recently in the area of perspective oil and gas deposits...