A Fast, Fully Integrated Approach to Early Field Development Resource Evaluation and Value Assessment: Madu-Anyala Project - Nigeria

Background . This study focuses on a simulation strategy that will allow the performance characteristics of an isolated gas turbine engine component, resolved from a detailed, high-fidelity analysis, to be transferred to an engine system analysis carried out at a lower level of resolution. This work will enable component-level, complex physical processes to be captured and analyzed in the context of the whole engine performance, at an affordable computing resource and time. Approach. The technique described in this paper utilizes an object-oriented, zero-dimensional (0D) gas turbine modeling and performance simulation system and a high-fidelity, three-dimensional (3D) computational fluid dynamics (CFD) component model. The work investigates relative changes in the simulated engine performance after coupling the 3D CFD component to the 0D engine analysis system. For the purposes of this preliminary investigation, the high-fidelity component communicates with the lower fidelity cycle via an iterative, semi-manual process for the determination of the correct operating point. This technique has the potential to become fully automated, can be applied to all engine components, and does not involve the generation of a component characteristic map. Results. This paper demonstrates the potentials of the “fully integrated” approach to component zooming by using a 3D CFD intake model of a high bypass ratio turbofan as a case study. The CFD model is based on the geometry of the intake of the CFM56-5B2 engine. The high-fidelity model can fully define the characteristic of the intake at several operating condition and is subsequently used in the 0D cycle analysis to provide a more accurate, physics-based estimate of intake performance (i.e., pressure recovery) and hence, engine performance, replacing the default, empirical values. A detailed comparison between the baseline engine performance (empirical pressure recovery) and the engine performance obtained after using the coupled, high-fidelity component is presented in this paper. The analysis carried out by this study demonstrates relative changes in the simulated engine performance larger than 1%. Conclusions. This investigation proves the value of the simulation strategy followed in this paper and completely justifies (i) the extra computational effort required for a more automatic link between the high-fidelity component and the 0D cycle, and (ii) the extra time and effort that is usually required to create and run a 3D CFD engine component, especially in those cases where more accurate, high-fidelity engine performance simulation is required.

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An Integrated Approach to Optimise an Offshore Field Development Plan

10.2118/202852-ms ◽

2020 ◽

Author(s):

Hiren Kasekar ◽

Usama Ghauri ◽

Michael Nevin ◽

Raphaele Mel ◽

Mattheus Uijttenhout ◽

...

Keyword(s):

Integrated Approach ◽

Development Plan ◽

Field Development ◽

Offshore Field

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Gravity and Magnetic Methods

Continental Shelf Limits ◽

10.1093/oso/9780195117820.003.0018 ◽

2000 ◽

Author(s):

Richard M. Carruthers ◽

John D. Cornwell

Keyword(s):

Large Scale ◽

Gravity Data ◽

Integrated Approach ◽

Rock Properties ◽

Magnetic Data ◽

Satellite Gravity ◽

Fully Integrated ◽

Continental Shelves ◽

Gravity And Magnetic ◽

Gravity And Magnetic Data

Lateral variations in the density and magnetization of the rocks within the crust give rise to "anomalies" in the Earth's gravity and magnetic fields. These anomalies can be measured and interpreted in terms of the geology both in a qualitative sense, by mapping out trends and changes in anomaly style, and quantitatively, by creating models of the subsurface which reproduce the observed fields. Such interpretations are generally less definitive in themselves than the results from seismic surveys (see chapter 12), but the data are widely available and can provide information in areas where other methods are ineffective or have not been applied. As the different geophysical techniques respond to specific rock properties such as density, magnetization, and acoustic velocity, the results are complementary, and a fully integrated approach to data collection and interpretation is generally more effective than the sum of its parts assessed on an individual basis. Gravity and magnetic data have been acquired, at least to a reconnaissance scale, over most of the world. In particular, the release into the public domain of satellite altimetry information (combined with improved methods of data processing) means that there is gravity coverage to a similar standard for most of the offshore region to within about 50 km of the coast. Magnetic anomalies recorded from satellites provide global coverage, but the high altitude of the observations means that only large-scale features extending over many 10s of kilometers are delineated. Reconnaissance aeromagnetic surveys with flight lines 10-20 km apart provide a lateral anomaly resolution similar to that of the satellite gravity data. Oceanographic surveys undertaken by a variety of academic and research institutions are another valuable source of data in remote regions offshore which supplement and extend the more detailed coverage obtained over the continental shelves, for example, by oil companies in areas of hydrocarbon interest. Surveys over land vary widely in terms of acquisition parameters and quality, but some form of national compilation is available from many countries. A number of possible applications of the potential field (i.e., gravity and magnetic) data follow from the terms set out by UNCLOS. Paragraph 4(b) of article 76 states, "In the absence of evidence to the contrary, the foot of the continental slope is to be determined as the point of maximum change in the gradient at its base" (italics added).

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The Blake Field, Blocks 13/24a and 13/29b, UK North Sea

Geological Society London Memoirs ◽

10.1144/m52-2018-10 ◽

2020 ◽

Vol 52 (1) ◽

pp. 651-663 ◽

Cited By ~ 1

Author(s):

E. Saundry ◽

J. Colmenares

Keyword(s):

Depositional Environment ◽

Integrated Approach ◽

Water Contact ◽

Dynamic Data ◽

Fully Integrated ◽

Geological Interpretation ◽

Light Oil ◽

Oil Water ◽

4D Seismic ◽

Different Levels

AbstractThe Blake Field is subdivided into two discrete parts, the ‘Channel’ and the ‘Flank’ areas. The two areas are geologically different but also reflect the different levels of maturity in terms of their development. Blake Channel was discovered in 1998, with first production commencing in 2001. Blake Flank was discovered in 1974 and developed in 2003.The field contains saturated light oil, with a field-wide oil–water contact and two significant gas caps. The reservoir comprises deep-water turbidite sands of Lower Cretaceous age.The combination of complex depositional environment and dynamic data resulted in the decision in 2016, to create a new model incorporating a fully integrated approach to subsurface evaluation and modelling. The latest work summarized in this paper incorporates a new geological interpretation along with the addition of aquifer extensions to capture depletion from offset fields, and a palaeo-oil leg, to help limit aquifer influx and improve history match. 4D seismic has also been incorporated to support the evaluation. Blake Channel and Flank have oil-in-place of 230 MMbbl and 300 MMbbl and have produced 94 MMbl and 15 MMbbl, respectively, to date.

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High Load Jacking Frames for Pin and Hanger Replacement at the Robert Moses Causeway

Transportation Research Record Journal of the Transportation Research Board ◽

10.1177/0361198120959075 ◽

2020 ◽

pp. 036119812095907

Author(s):

Liwei Han ◽

Qi Ye ◽

Dan Wei

Keyword(s):

New York ◽

Computational Study ◽

Global Analysis ◽

Integrated Design ◽

Integrated Approach ◽

Efficient Design ◽

Fully Integrated ◽

Bridge Structures ◽

Integrated Design Approach ◽

Aging Steel

An innovative design of jacking frames was developed for pin and hanger replacement in Robert Moses Causeway (RMC) bridge in Suffolk County, New York. The robust and efficient design of the jacking frames results in a system with improved safety, performance, constructability, and economy. A fully integrated approach for design, fabrication, and construction was employed for higher quality and efficiency. A detailed and precise 3D model was created and directly used for finite element (FE) modeling, producing contract and shop drawings, and designing of temporary work platforms. This paper provides an overview of the integrated design approach and system design, and documents the computational study for this system (global analysis, stress analysis, and large-displacement stability analysis). There are many aging steel bridges in the U.S. and abroad that have similar pin and hanger systems, and jacking frames will be needed to replace those pins and hangers when they exhaust their useful service life. The concepts and details of the jacking frames can easily be emulated by engineers for developing similar safe and robust systems for suspended truss spans and other applicable bridge structures.

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Climate Change and Children’s Rights

The Oxford Handbook of Children's Rights Law ◽

10.1093/oxfordhb/9780190097608.013.23 ◽

2020 ◽

pp. 447-473

Author(s):

Christine Bakker

Keyword(s):

Climate Change ◽

Human Rights ◽

Integrated Approach ◽

Children's Rights ◽

Children’S Rights ◽

Access To Justice ◽

Fully Integrated ◽

Rights Of The Child ◽

Failure To Protect ◽

The Relationship

The relationship between climate change and children’s rights has been explicitly recognized in the 2015 Paris Agreement on Climate Change. This chapter considers how the enjoyment of children’s rights can be endangered by climate change and critically discusses the potentialities and limitations of children’s access to justice before international and regional human rights bodies to hold states accountable for their failure to protect these rights. The chapter concludes with some key challenges for states, human rights bodies, NGOs, and children themselves, suggesting, inte alia, that states should adopt a fully integrated approach toward climate policies, sustainable development, and their obligations under the Convention on Rights of the Child and that children, with the support of NGOs and other stakeholders, should fully exploit their access to justice and their participatory rights to influence decision-making on climate change that directly affects their current and future lives.

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