A Comparison Between PSRK and GERG-2004 Equation of State for Simulation of Non-Isothermal Compressible Natural Gases Mixed with Hydrogen in Pipelines / Porównanie równań stanu opracowanych według metody PSRK oraz GERG-2004 wykorzystanych do symulacji zachowania ściśliwych mieszanin gazu ziemnego i wodoru w rurociągach, w warunkach przepływów nie-izotermicznych

2013 ◽  
Vol 58 (2) ◽  
pp. 579-590
Author(s):  
Frits E. Uilhoorn
Keyword(s):  
Equation Of State ◽  
Natural Gas ◽  
Gas Flow ◽  
Transient Flow ◽  
Equations Of State ◽  
Group Contribution Method ◽  
Flow Conditions ◽  
Fluid Approximation ◽  
Natural Gases

In this work, the GERG-2004 equation of state based on a multi-fluid approximation explicit in the reduced Helmholtz energy is compared with the predictive Soave-Redlich-Kwong group contribution method. In the analysis, both equations of state are compared by simulating a non-isothermal transient flow of natural gas and mixed hydrogen-natural gas in pipelines. Besides the flow conditions also linepack-energy and energy consumption of the compressor station are computed. The gas flow is described by a set of partial differential equations resulting from the conservation of mass, momentum and energy. A pipeline section of the Yamal-Europe gas pipeline on Polish territory has been selected for the case study.

Sensitivity of natural gas flow measurement to AGA8 or GERG2008 equation of state utilization

2018 ◽  
Vol 57 ◽  
pp. 305-321 ◽  
Author(s):  
Mahmood Farzaneh-Gord ◽  
Behnam Mohseni-Gharyehsafa ◽  
Alexander Toikka ◽  
Irina Zvereva
Keyword(s):  
Equation Of State ◽  
Natural Gas ◽  
Flow Measurement ◽  
Gas Flow ◽  
Natural Gas Flow

Characterization of unique natural gas flow in fracture-vuggy carbonate reservoir: A case study on Dengying carbonate reservoir in China

2019 ◽  
Vol 182 ◽  
pp. 106243 ◽  
Author(s):  
Xinhui Xie ◽  
Hongjiang Lu ◽  
Hucheng Deng ◽  
Hongzhi Yang ◽  
Bailu Teng ◽  
...  
Keyword(s):  
Natural Gas ◽  
Gas Flow ◽  
Carbonate Reservoir ◽  
Natural Gas Flow

scholarly journals Operation of Natural Gas Pipeline Networks With Storage Under Transient Flow Conditions

2021 ◽  
pp. 1-13
Author(s):  
Sai Krishna Kanth Hari ◽  
Kaarthik Sundar ◽  
Shriram Srinivasan ◽  
Anatoly Zlotnik ◽  
Russell Bent
Keyword(s):  
Natural Gas ◽  
Transient Flow ◽  
Gas Pipeline ◽  
Flow Conditions ◽  
Natural Gas Pipeline ◽  
Pipeline Networks

Assessing Hydrate Formation in Natural Gas Pipelines Under Transient Operation / Ocena zjawiska tworzenia się hydratów w warunkach nieustalonego przepływu gazu w gazociągach

2013 ◽  
Vol 58 (1) ◽  
pp. 131-144
Author(s):  
Andrzej Osiadacz
Keyword(s):  
Natural Gas ◽  
Gas Flow ◽  
Hydrate Formation ◽  
Operating Conditions ◽  
Gas Pipelines ◽  
Natural Gas Pipelines ◽  
Hydrate Phase ◽  
Real Gas Effects ◽  
Classical Thermodynamics

This work presents a transient, non-isothermal compressible gas flow model that is combined with a hydrate phase equilibrium model. It enables, to determine whether hydrates could form under existing operating conditions in natural gas pipelines. In particular, to determine the time and location at which the natural gas enters the hydrate formation region. The gas flow is described by a set of partial differential equations resulting from the conservation of mass, momentum, and energy. Real gas effects are determined by the predictive Soave-Redlich-Kwong group contribution method. By means of statistical mechanics, the hydrate model is formulated combined with classical thermodynamics of phase equilibria for systems that contain water and both hydrate forming and non-hydrate forming gases as function of pressure, temperature, and gas composition. To demonstrate the applicability a case study is conducted.

Impact of Transient Flow Conditions on Electric Submersible Pumps in Sinusoidal Well Profiles: A Case Study

2005 ◽  
Vol 20 (03) ◽  
pp. 190-200
Author(s):  
Shauna G. Noonan ◽  
Michael Kendrick ◽  
Patrick Matthews ◽  
Ian Ayling ◽  
Brown Lyle Wilson ◽  
...  
Keyword(s):  
Transient Flow ◽  
Flow Conditions

Impact of Transient Flow Conditions on Electric Submersible Pumps in Sinusoidal Well Profiles: A Case Study

2003 ◽  
Author(s):  
S.G. Noonan ◽  
M.A. Kendrick ◽  
P.N. Matthews ◽  
N. Sebastiao ◽  
I. Ayling ◽  
...  
Keyword(s):  
Transient Flow ◽  
Flow Conditions

A Steady State, Adiabatic Compression and One-Dimensional Generalized Flow Analysis of a Natural Gas Pipeline Using Soave-Redlich-Kwong Equation of State

2013 ◽  
Author(s):  
Hicham T. Oumechouk ◽  
Mohand A. Ait-Ali
Keyword(s):  
Steady State ◽  
Equation Of State ◽  
Natural Gas ◽  
Differential Equations ◽  
Specific Volume ◽  
Gas Flow ◽  
Adiabatic Compression ◽  
Gas Pipeline ◽  
One Dimensional ◽  
Gas Properties

Steady state adiabatic compression and one-dimensional generalized gas flow is analyzed using governing conservation laws and Redlich-Kwong-Soave (R-K-S) equation of state applied to a representative mixture of natural gas. The objective of this work is to obtain the state properties of the natural gas considered as an open thermodynamic system at compressor and gas pipeline exits, then the compressor power and energy auto-consumptions for a few diameters and pipe line lengths configurations. The adiabatic, irreversible compression process is analyzed with formal state property definitions where departures from ideal gas properties are obtained using R-K-S equation of state. The one-dimensional generalized gas flow problem is analyzed with continuity, momentum and energy equations, combined with the equation of state; Reynolds analogy between heat transfer and flow friction is adopted. This problem is thus defined with four non linear coupled differential equations; the variables to be determined are pressure, temperature, specific volume and velocity at the gas pipeline exit. The adopted calculation procedure to obtain the gas properties is iterative. It assumes pressure and temperature initial values, solves the equation of state for the specific volume and the continuity equation for the velocity, then corrects for pressure and temperature with integrated values to be used with the next iteration from a solution of the differential equations of motion and energy. This procedure is applied to a few gas pipeline configurations of pipe diameters sections and number of boosting compressor stations for a gas pipeline capacity of 13.5 billions standard cubic meters per year to be delivered to a natural gas liquefaction plant located at a sea port at a distance of some 350 miles.

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