Integrated Asset Modeling for Deep Gas Reservoirs. Case Study in UAE

2021 ◽  
Author(s):  
Mahmoud A. Basioni ◽  
Abu Baker Ali Al Jefri ◽  
Ahmed Yahya Al Blooshi ◽  
Hamda J. AlMesmari ◽  
Youcef Azoug ◽  
...  
Keyword(s):  
Dynamic Models ◽  
Primary Objective ◽  
Pvt Properties ◽  
Gas Reservoirs ◽  
Fully Integrated ◽  
Safety Standards ◽  
Project Risks ◽  
Fit For Purpose ◽  
Fully Coupled

Abstract The primary objective of reservoir management is the maximization of plateau duration and reserves recovery, while minimizing the project risks and maintaining the highest environmental and safety standards. It is critical to identify upfront all the risks and bottlenecks that may occur through the entire life of the assets, to prevent them from happening or minimize the reaction time in case of occurrence. Integration of all asset elements (subsurface dynamic models and a surface facility network) provides a fit-for-purpose tool to optimize assets development. This article describes fully coupled surface and subsurface modeling done for 6 reservoir formations (3 fields) sharing the surface facility and including 6 gas reservoirs with different PVT properties. A fully integrated model describes all technical processes occurring in the subsurface and surface systems and has to be further calibrated using measurements done as per the reservoir monitoring plan.

Design of water allocation model: efficiency and risk aspects

2005 ◽  
Vol 5 (3-4) ◽  
pp. 9-16
Author(s):  
C. Kim ◽  
D. Han
Keyword(s):  
Water Allocation ◽  
Primary Objective ◽  
Allocation Model ◽  
Proportional Allocation ◽  
Model Efficiency ◽  
Service Sectors ◽  
Expected Benefits ◽  
Water Allocation Model ◽  
Allocation Methods

The primary objective of this study is to improve the methodology for water allocation focused on efficiency and risk aspects. To attain the primary objective, this study sets up an objective function to maximize social expected benefits, and considers three types of allocation methods. Three types of allocation methods are optimal, proportional, and fixed allocation between regions and service sectors. The results of case study area shows that the fixed allocation method is preferred to the proportional allocation in most cases except that the variance of flow is small with respect to efficiency. Also, efficient and less-risky allocation is simultaneously obtained in some cases, while efficiency and risk show the relation of trade-off in other cases.

scholarly journals Scientific Programming with High Performance Fortran: A Case Study Using the xHPF Compiler

1997 ◽  
Vol 6 (1) ◽  
pp. 127-152
Author(s):  
Eric De Sturler ◽  
Volker Strumpen
Keyword(s):  
High Performance ◽  
Parallel Implementation ◽  
Gaussian Elimination ◽  
Primary Objective ◽  
Matrix Product ◽  
Dense Matrix ◽  
High Performance Fortran ◽  
Partial Pivoting ◽  
Intel Paragon

Recently, the first commercial High Performance Fortran (HPF) subset compilers have appeared. This article reports on our experiences with the xHPF compiler of Applied Parallel Research, version 1.2, for the Intel Paragon. At this stage, we do not expect very High Performance from our HPF programs, even though performance will eventually be of paramount importance for the acceptance of HPF. Instead, our primary objective is to study how to convert large Fortran 77 (F77) programs to HPF such that the compiler generates reasonably efficient parallel code. We report on a case study that identifies several problems when parallelizing code with HPF; most of these problems affect current HPF compiler technology in general, although some are specific for the xHPF compiler. We discuss our solutions from the perspective of the scientific programmer, and presenttiming results on the Intel Paragon. The case study comprises three programs of different complexity with respect to parallelization. We use the dense matrix-matrix product to show that the distribution of arrays and the order of nested loops significantly influence the performance of the parallel program. We use Gaussian elimination with partial pivoting to study the parallelization strategy of the compiler. There are various ways to structure this algorithm for a particular data distribution. This example shows how much effort may be demanded from the programmer to support the compiler in generating an efficient parallel implementation. Finally, we use a small application to show that the more complicated structure of a larger program may introduce problems for the parallelization, even though all subroutines of the application are easy to parallelize by themselves. The application consists of a finite volume discretization on a structured grid and a nested iterative solver. Our case study shows that it is possible to obtain reasonably efficient parallel programs with xHPF, although the compiler needs substantial support from the programmer.

scholarly journals Love in the time of Covid-19: a case-study of the complex laws governing weddings

Legal Studies ◽  
2021 ◽  
pp. 1-17
Author(s):  
Rebecca Probert ◽  
Stephanie Pywell
Keyword(s):  
First Century ◽  
Marriage Law ◽  
England And Wales ◽  
General Law ◽  
The Social ◽  
The Future ◽  
Fit For Purpose ◽  
The Law ◽  
The Impact

Abstract During 2020, weddings were profoundly affected by the Covid-19 pandemic. During periods of lockdown few weddings could take place, and even afterwards restrictions on how they could be celebrated remained. To investigate the impact of such restrictions, we carried out a survey of those whose plans to marry in England and Wales had been affected by Covid-19. The 1,449 responses we received illustrated that the ease and speed with which couples had been able to marry, and sometimes whether they had been able to marry at all, had depended not merely on the national restrictions in place but on their chosen route into marriage. This highlights the complexity and antiquity of marriage law and reinforces the need for reform. The restrictions on weddings taking place also revealed the extent to which couples valued getting married as opposed to having a wedding. Understanding both the social and the legal dimension of weddings is important in informing recommendations as to how the law should be changed in the future, not merely to deal with similar crises but also to ensure that the general law is fit for purpose in the twenty-first century.

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