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检索条件"机构=Shell Projects and Technology"

共 129 条记录，以下是111-120 订阅

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Towards a sustainable energy future: Realities and opportunities

Towards a sustainable energy future: Realities and opportuni...

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作者： Armstrong, Lynda Shell Projects and Technology Shell International Kessler Park 1 2280 GS Rijswijk Netherlands

My purpose in this paper is threefold. First, I would like to examine why the world needs us to produce more energy. Second, I will look at the range of energy sources available for a sustainable future. A number of myths have grown up around the various energy sources and their relative contribution to addressing the global energy challenge: I will seek to dispel some of those. Third, I want to highlight what I see as an urgent need: For more informed decision making and more action in this complex area. © 2011 The Royal Society.

关键词： Decision making

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Experiments and modelling for the control of riser instabilities with gas lift

Experiments and modelling for the control of riser instabili...

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作者： Seim, J.E. Van Beusekom, V.L. Henkes, R.A.W.M. Nydal, O.J. Norske Shell Norway Shell Projects and Technology Netherlands Delft University of Technology Netherlands NTNU Norway

ISBN: (纸本)9781855981256

Three slug types were found in the new lab experiments carried out in a 2'' flowline-riser system with 477 litre volume operating at ambient pressure: severe slugging of type I (which has a liquid slug length larger than the riser height), severe slugging of type II (having a liquid slug length smaller than the riser height), and small scale slugs initiated in the flowline that prevent the severe slugging cycle. Slug predictions with the OLGA model are in good agreement with the experiments, as well as with other experiments for similar, but smaller, configurations described in the literature. The model also agrees with the severe slugging cycle of the Gannet system in the North Sea. The lab experiments show that gas lift mitigates the type I slugging cycle, but it does not fully remove it. Experiments for gas lift with the type II severe slugging cycle show that the cycle is removed if the superficial lift gas velocity is above 0.75 m/s. No effect of gas lift is found for the experiments where the severe slugging cycle was absent anyhow due to hydrodynamic slugging in the flowline. The OLGA predictions for the effect of gas lift for the three slug types are in reasonable agreement with the lab experiments. Particularly the experiments and simulations show that gas lift is not very effective for slug control. © BHR Group 2011.

关键词： Gases

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Biofuels in the Transport Sector

Biofuels in the Transport Sector

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第五届中国工业生物技术发展高峰论坛

作者： Lionel Clarke Team Leader Biodomain Biomass and Open Innovation Shell Projects and Technology Innovation

Global and local market challenges, including greater energy security and the need for effective responses to climate change, are stimulating interest and demand for biofuels *** are a practical solution for reducing carbon emissions now and in coming decades, due to their compatibility with existing supply chains, liquid storage and handling infrastructures and vehicle *** already provide 3% of the world' s transport energy *** demand continues to grow in future due to rising populations, biofuels provide one of a range of portfolio options that will be adopted in different countries.

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Characterization of dodecane-surfactant-brine emulsions using THz imaging

Characterization of dodecane-surfactant-brine emulsions usin...

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作者： Nickel, Daniel V. Laib, Jonathan P. Mittleman, Daniel M. Navarrete, Reinaldo C. Pearce, Jeremy Tortorici, Paul Rice University Department of Electrical and Computer Engineering MS 366 Houston TX 77005 United States Shell Projects and Technology Downstream 3333 Hwy 6 South Houston TX 77082 United States

We investigate the feasibility of using terahertz imaging to quantify the relative dodecane (C12H26) content and long-term stability of dodecane-surfactant-brine emulsions of varying salinity for their use in surfacta... 详细信息

ISBN: (纸本)9781557529107

关键词： Surface active agents

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Characterization of dodecane-surfactant-brine emulsions using THz imaging

Characterization of dodecane-surfactant-brine emulsions usin...

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Conference on Lasers and Electro-Optics (CLEO)

作者： Daniel V. Nickel Jonathan P. Laib Daniel M. Mittleman Reinaldo C. Navarrete Jeremy Pearce Paul Tortorici Department of Electrical and Computer Engineering Rice University Houston TX USA Shell Projects and Technology Downstream Houston TX USA

We investigate the feasibility of using terahertz imaging to quantify the relative dodecane (C 12 H 26 ) content and long-term stability of dodecane-surfactant-brine emulsions of varying salinity for their use in surf... 详细信息

ISBN: (纸本)9781557529107

We investigate the feasibility of using terahertz imaging to quantify the relative dodecane (C 12 H 26 ) content and long-term stability of dodecane-surfactant-brine emulsions of varying salinity for their use in surfactant-enhanced oil recovery.

关键词： Frequency measurement Reservoirs USA Councils Spectroscopy Optical imaging Chemistry

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Ethanol SCC research on PWHT effects and threshold stress determination

Ethanol SCC research on PWHT effects and threshold stress de...

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作者： Venkatesh, Anand Chambers, Brian Kane, Russell D. Edmondson, Jim Honeywell Corrosion Solutions 11201 Greens Crossing Blvd Houston TX 77066 United States iCorrosion LLC 2318 Huldy Street Houston TX 77019 United States Street Shell Projects and Technology Houston TX 77252 United States

Recently a laboratory testing program was completed that covers an important and yet unexplored area of ethanol stress corrosion cracking (eSCC) of steel equipment in ethanol distribution and blending facilities. This program aimed at generating new data on the effects of post weld heat treatment (PWHT) on eSCC and also attempted to determine the threshold stresses required for eSCC. These two topics are related as the effectiveness of PWHT is based on lowering of the levels of welding-induced residual stresses in the fabricated piece to less than the threshold stress of SCC. Therefore, these two tasks will help identify acceptable guidelines for PWHT and increase confidence in field practices, thereby (a) reducing the risk of future SCC failures, and (b) providing better definition of PWHT time and temperature parameters appropriate for eSCC. The paper describes in detail the various testing methodologies and the important findings of this research program. © 2011 by NACE International.

关键词： Stress corrosion cracking

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Fluid-structure interaction simulations of a pipeline span exposed to sea bottom currents

Fluid-structure interaction simulations of a pipeline span e...

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作者： Pontaza, Juan P. Menon, Raghu G. Swanson, Richard C. Jhingran, Vikas Hill, Mike Kopp, Frans Hoffman, Joe Shell Projects and Technology United States

ISBN: (纸本)9781617384264

The paper is concerned with the numerical simulation of fluid-structure interaction (FSI) of a pipeline span exposed to sea bottom currents. The pipeline lies on the seabed at one end and departs the seabed to attach to a PLET (pipeline end termination) at the other end. The suspended span in-between is referred to as a 'free span'. When exposed to sea bottom currents the free span may experience vortex-induced vibrations (VIV), which may cause fatigue damage to the pipeline. The length of the suspended span is 95 ft, and the gap to diameter ratio varies along the length from 0.0 at the seabed touch point to approximately 2.0 at the PLET. The sea bottom current at a reduced velocity of 3.2 is an extreme event for this span. The VIV response of the pipe span is predicted by coupling a three-dimensional viscous incompressible Navier-Stokes solver with a beam finite element solver. Parameters such as turbulence in the flow, proximity of the seabed, pipe sagging due to submerged weight, and pipe-soil interaction, are all accounted for in the FSI simulation. The motivation for such a considerable simulation effort is to gain insight into VIV of pipe spans in proximity of the seabed, and in the long-term to manifest this insight in a set of design guidelines for free spanning pipelines. Design guidelines for free spans are typically based on VIV amplitude and frequency responses for isolated pipes, with little regard to effects of seabed proximity. This may result in overly conservative designs and/or expensive span remediation recommendations, when in reality no span remediation is required. Copyright 2010, Offshore technology Conference.

关键词： Fluid structure interaction

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5D interpolation of seismic data with a least-squares fourier inversion

5D interpolation of seismic data with a least-squares fourie...

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作者： Jin, S. Shell Projects and Technology United Kingdom

ISBN: (纸本)9781617386671

I developed a new robust 5D inlerpolalion melhod for seismic data regularization with a preconditioned least-squares inversion. Based on the assumption of linearity, the preconditioner is derived from the amplitude spectra automatically predicted from the regularized low frequency data. It plays a key role in the stabilization of the inversion and de-alsasing of the data. The method is efficient because it uses Nonuniform fast Fourier transform. A field data example demonstrates how it performs when applied to highly irregular data. © 2010, European Association of Geoscientists and Engineers.

关键词： Fast Fourier transforms

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Measuring, reporting, and mitigating CO2: An oil industry perspective

Measuring, reporting, and mitigating CO2: An oil industry pe...

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2010 AIChE Spring Meeting and 6th Global Congress on Process Safety, 10AIChE

作者： Powell, Joseph B. Iyer, Mahesh V. Chemical Engineering Shell Projects and Technology Houston TX United States Shell Projects and Technology Houston TX United States

shell has been working to reduce CO2 emissions in six ways, i.e., by using energy more efficiently in their operations, reducing Energy/GDP;by building their capability in CO2 carbon capture and storage, which impacts...

ISBN: (纸本)9780816910649

shell has been working to reduce CO₂ emissions in six ways, i.e., by using energy more efficiently in their operations, reducing Energy/GDP;by building their capability in CO₂ carbon capture and storage, which impacts the fraction of carbon captured;Continuous investment in R&D to deliver breakthrough technologies that will increase efficiency and reduce emissions across value chains;development of lower CO₂ sources of energy;providing products and services that help customers to use less energy and emit less CO₂;and continuous work with governments, industry, and non-governmental organizations and advocating the need for more effective CO₂ regulations. shell has also invested substantially in alternative energy and CO₂ solutions over the last 5 yr. This includes a new natural gas-fired combined heat and power unit at the Pernis refinery that has cut greenhouse gas emissions by 500,000 ton/yr. shell's R&D efforts in new biofuels technology as well as hydrogen provides the key enablers to reduce carbon footprint on a well-to-wheel basis in the transportation energy value chain, especially for lignocellulosic feedstocks. This is an abstract of a paper presented at the AIChE 2010 Spring National Meeting (San Antonio, TX 3/21-25/2010).

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Remote operations at shell - A case history from the giant NAM groningen gas field in the Netherlands

Remote operations at shell - A case history from the giant N...

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SPE/DGS Saudi Arabia Section Technical Symposium and Exhibition 2010

作者： Douwes, Brugt Van Meijeren, Wim Shell Projects and Technology Germany Shell Upstream International United Kingdom

ISBN: (纸本)9781555638481

In the last two decades shell has been working to simplify and automate field operations processes and sub-processes in its assets throughout the world. This is driven by the need to develop competitive and cost-efficient technical solutions that increase safety and reliability of operations, especially in remote and/or harsh environments. Remotely starting up and shutting down certain pieces of equipment was already standard practice in the industry since decades, introduced in gas fired furnaces, heaters, and boilers. Nowadays, automation has extended to sensitive equipment and complete processing units. This paper looks at the level of automation and degree of remote operations achieved in the operation of the giant NAM Groningen Gas Field, in the north of The Netherlands. NAM is a joint venture between shell and Exxon, operated by shell. After an extensive redevelopment project, with the addition of compressors, more than 300 wells, previously distributed over more than 25 locally operated production facilities, are now linked up and operated remotely from one central control room by two operators. The production facilities are now normally unmanned, and only visited for repairs and/or scheduled maintenance. NAM Groningen demonstrates a technically advanced solution that minimizes HSE and risk exposure, standardizes operations, and reduces resources required to manage one of the largest gas fields in all of Europe. Using some of the most advanced technologies available in the industry, shell has applied such a high degree of automation to NAM's Groningen gas field, that each of the production facilities can be ramped up from zero flow to some 25 million Nm3/d in only one hour - All remotely. Copyright © 2010, Society of Petroleum Engineers.

关键词： Automation

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