... of hydrogen pipelines. Using a currently operational pure hydrogen pipeline the accuracies of different equations of state will be investigated. These equations will then be compared against different hydrogen blends and hydrogen synthetic fuels to determine their suitability. The benefits of the real-time...

..., the thermodynamic equilibrium conditions for various gas mixtures are gathered from the literature. This is done to maintain the accuracy with the real-time conditions that could encounter in the pipelines. These data points are used for the development of a statistical model. This model is validated...

... information heating value gas composition consumer accuracy midstream oil & gas transmission system pipeline composition psig 1914 configuration liquified natural gas giannato psig 1914 simulation interest group allocation model gas monetization © Copyright 2019, PSIG, Inc. This paper...

... design time step derivative richard myer psig 1923 piping simulation midstream oil & gas local extrapolation psig 1923 pipe equation approximation compressor amplification factor backward difference single pipe pipe example accuracy oscillation output pressure © Copyright 2019...

... Abstract Pipeline simulation always brings up the question of which mesh (or "knot spacing") to use. More mesh points mean improved accuracy, but also slower simulation. In addition, if the spatial mesh isn't chosen appropriately for the time step (which may itself be changing), the model can...

... different portions of the risk spectrum but no single technology will mitigate all of the risk as illustrated in Figure 1. reliability decision tree pressure wave detection leak detection methodology accuracy sensitivity upstream oil & gas leak detection technology psig 1502 artificial...

... differential equations of hyperbolic type is conducted. The appropriateness of the schemes with respect to accuracy, programming effort, flexibility of the incorporation of nonpipe elements is evaluated. The main goal of the analysis is to choose the most effective scheme for transient simulation of large...

... on certain parameters. In this paper, artificial neural networks (ANN) are used to predict future hourly natural gas loads with up to 95% accuracy. The ANN model is trained based on multiple parameters, for example, gas load historical pattern, weather pattern, calendar effect, etc. for different seasonal...

... production monitoring production control pressure curve mathematical modeling air emission reservoir surveillance psig 1302 discharge accuracy climate change pressure drop detection equation disturbance leak detection system chemical spill Copyright 2013, Pi peline Simulati on Interest Gr...

... Time Transient Model Statistical analysis Negative pressure wave and Fiber Optics. After a comparison of these technologies, the following performance figures will be addressed: Minimum leak detectable Detection time Leak location accuracy False alarm rate. To achieve...

... available code demonstrated to be able to predict pressure drop and temperature development with high accuracy. Viscosity is considerably less important but starts to influence frictional pressure drop at lower Reynolds number Correct prediction of viscosity will be more important in transient...

... Notification of off-specification deliveries A comparison of some of the characteristics and typical settings of the new PMS and the previous system are presented to add understanding of how these benefits arise. To illustrate how the required accuracy of the PMS can be achieved without any subsea...

... pipeline and a few wrong turns in the decision making process can end up being very costly. It is easy to say " I want a leak detection system capable of detecting a ten gallon spill in less than a minute, locating it within an accuracy of 10 feet ". It might even be possible to install a system that can...

... ABSTRACT: GASSCO transports approximately 100 billion standard cubic meters (3.5 10·MMSCF) of Norwegian natural gas to the European market through nearly 8000km (5000 miles) of large diameter high-pressure subsea pipelines each year. The two key accuracy requirements of the pipeline network...

... in-flows and out-flows, this model provides explicit formulas to understand qualitatively, and to quantify the multiple phenomena at stake. Intensive comparisons with the commercial software SIMONE1 proved the accuracy of this approach. INTRODUCTION GRTgaz develops, maintains and operates the main part...

... temperature along the pipeline depends on the accuracy of the assumed ambient temperature and the estimated heat transfer. This paper mainly focuses on heat transfer modeling, and how this affects the estimated gas temperature. The importance of a correct total heat transfer coefficient for different...

... estimation consensus flow pipeline downstream pressure production logging accuracy equation eef flow rate upstream oil & gas pressure drop PSIG 0911 State Estimation in Online Models Jason P. Modisette, ATMOS International Copyright 2009, Pipeline Simulation Interest Group This paper...

..., maximum speed, and power available have been satisfied, other information can be determined: – Compressor speed – Compressor efficiency, can the operating point be moved to a higher efficiency? – Surge margin – Discharge temperature – Gas turbine fuel consumption MODELING ACCURACY...

... ABSTRACT "Fast is fine, but accuracy is everything." Xenophon (BC 431 - 350) "You can't always get what you want … but if you try sometimes you just might find you get what you need" Mick Jagger (1943 -) The Model Imperfect On a simple level accuracy is well understood: the closer...

.... The quality of data available to the forecasting tool as well the utilization of that data within the tool plays a key role in the level of accuracy of the forecast. As such, if necessary data is unavailable, of poor quality or used inappropriately then the accuracy of the forecast is adversely affected...