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Experimental and Numerical study of Multiphase Flow phenomena and Models in Oil&Gas Industry

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petroleum 2019年第2期5卷 113-113页

作者： Alessandro Terenzi Barbara Marchetti Mariella Leporini pietro poesio Jianjun Liu saipem spA Fano PU Italy

Multiphase flows,including gas-liquid,gas-solid,liquid-liquid,liquid-solid,and solid-liquid-liquid flows,exist in many fields such as petroleum,power,chemical,food,biomedical,metallurgical,nuclear,and hydraulic *** the Oil&Gas industry,they play a key role due to its presence in many phases of oil and gas’production and transportation and,especially as fields become more economically marginal,there is growing demand to model and predict the detailed thermo-fluid dynamic behavior of those flows and the phenomena that they *** on phase distribution and heat or mass transfer are fundamental to give insight into the complicated principle and the application prospect.

关键词： insight transportation Multiphase

sand transport in multiphase flow mixtures in a horizontal pipeline:An experimental investigation

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petroleum 2019年第2期5卷 161-170页

作者： Mariella Leporini Barbara Marchetti Francesco Corvaro Giuseppe di Giovine Fabio polonara Alessandro Terenzi Universita politecnica delle Marche AnconaItaly Universita Telematica eCampus Italy Construction Technologies Institute National Research Council(CNR)San Giuliano MilaneseMilanItaly saipem spA Italy

An inherent problem with both oil and natural gas production is the deposition of sand particles in pipeline,which could lead to problems such as excessive pressure drops,equipment failure,pipeline erosion,and production *** characterization of sand particles transport and sedimentation in different flow systems such as sandemultiphase mixtures is vital to predict the sand transport velocity and entrainment processes in oil and gas transportation ***,it seems that no model exists able to accurately characterize the sand transport and deposition in multiphase *** fact,in the last decade several researchers tried to extend the modeling of liquid-solid flow to gas-liquid-solid flow,but no significant results have been obtained,especially in slug flow condition due to the complexity of the *** order to develop and validate a mathematical model properly formulated for the calculation of the sand critical deposition velocity in gas-liquid flow,more and more experimental data are *** paper presents a preliminary experimental study of three phase flows(air-water-sand)inside a horizontal pipe and the application of the sand-liquid models present in *** observations were made during the experimental study from which several conclusions were *** sand flow regimes were established by physical observation and data analysis:fully dispersed solid flow,moving dunes and stationary *** critical deposition velocities were determined at different sand *** was concluded that sand transport characteristics and the critical deposition velocity are strongly dependent on the gas-liquid flow regime and on sand concentration.

关键词： sand transport Multiphase flow Minimum transport condition Deposition Experimental investigation Oil and gas

site Characterization Data Model and GIs-based Tools for Offshore Engineering projects

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Hydro science & Marine Engineering 2022年第1期4卷 16-26页

作者： Matteo Mattioli Matteo Valenti pettino Andrea Foresi Diego Guidi saipem spA Fano Via Toniolo 161032Italy

Offshore engineering projects require the management of a huge amount of heterogeneous georeferenced data-among others metocean,geophysical,geotechnical,and environmental,which need a Data Model,data visualization and data analytics features on a common geographic basis.A Digital Data platform(DDp)has been developed on a GIs ambient with the aim to speed up the engineering design process(*** of routine operations),and also prevent misalignment of the data originating from different sources from Owner to suppliers and any potential loss of *** proposed GIs architecture is composed by two main components:i)the Data Model geodatabase,and ii)the GIs-Model Toolbar *** proposed development represents a step forward on the definition of a common specification and dictionary for offshore project execution overcoming the current bottlenecking and inefficiency on the design phases between the project owner and the engineering *** paper illustrates“what”and“how”,and in particular:i)the geodatabase and Data Model framework,ii)the required parameters to be organized and stored for offshore engineering design,and iii)the widgets implementation(***-based tools).Its application on a case study project with practical examples is presented.

关键词： GIs Metocean&geophysical database Digital data platform

关于m-项及三维船舶在波浪中运动的一种数值计算方法(英文)

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船舶力学 2012年第9期16卷 971-979页

作者：谢楠 Dracos VAssALOs saipem Ltd. Surrey KT3 6JJ U.K University of strathclyde Glasgow G4 0LZ U.K

文章提出一种基于Rankine源分布的三维船舶运动数值计算方法。该方法可求解定常及非定常的船舶兴波势流场。自由表面条件利用迭模解进行线性化,而物面条件中包含了m-项。由于m-项是定常速度势的物面二阶导数,数值计算有一定困难。文中... 详细信息

文章提出一种基于Rankine源分布的三维船舶运动数值计算方法。该方法可求解定常及非定常的船舶兴波势流场。自由表面条件利用迭模解进行线性化,而物面条件中包含了m-项。由于m-项是定常速度势的物面二阶导数,数值计算有一定困难。文中使用一种直接数值差分方法计算m-项。文中也提出一种满足远方辐射条件的数值差分方法。船舶的下沉和纵倾则通过迭代求解稳态兴波问题获得,从而确定船舶在有航速时的湿表面再进行耐波性计算。该方法的计算与现有模型试验进行了比较,结果令人满意。

关键词：船舶耐波性三维 Rankine源面源法数值计算