scholarly journals Energy Sector Development: System Dynamics Analysis

2019 ◽  
Vol 10 (1) ◽  
pp. 134 ◽  
Author(s):  
Mohamd Laimon ◽  
Thanh Mai ◽  
Steven Goh ◽  
Talal Yusaf
Keyword(s):  
System Dynamics ◽  
Fossil Fuel ◽  
High Energy ◽  
Energy Sector ◽  
Gas Production ◽  
Dynamic Complexity ◽  
Total Consumption ◽  
Limits To Growth ◽  
Fuel Resource

The development of a complex and dynamic system such as the energy sector requires a comprehensive understanding of its constituent components and their interactions, and thus requires approaches that can adapt to the dynamic complexity in systems. Previous efforts mainly used reductionist approaches, which examine the components of the system in isolation, neglecting their interdependent nature. Such approaches reduce our ability to understand the system and/or mitigate undesirable outcomes. We adopt a system dynamics approach to construct an integrated model for analysing the behaviour of the energy sector. Although the Australian energy sector is used as a case study, the model can be applied in other context elsewhere around the world The results indicate that the current trajectory of the Australian energy sector is unsustainable and growth is not being controlled. Limits to growth are fast approaching due to excessive fossil fuel extraction, high emissions and high energy dependency. With the current growth, Australia’s global CO2 emissions footprint will increase to unprecedented levels reaching 12% by 2030 (9.5% for exports and 2.5% for domestic). Oil dependency will account for 43% and 47% of total consumption by 2030 and 2050. By 2032, coal will be the only fossil fuel resource available in Australia. Expansion of investment in coal and gas production is a large risk.

Logging Optimization and Data Analysis Enabling Bypass Pay Identification and Hydrocarbon Quantification with Advanced Pulsed Neutron Behind Casing

2021 ◽  
Author(s):  
Sviatoslav Iuras ◽  
Samira Ahmad ◽  
Chiara Cavalleri ◽  
Yernur Akashev
Keyword(s):  
Cross Section ◽  
Pore Space ◽  
High Energy ◽  
Elastic Cross Section ◽  
Gas Production ◽  
Donets Basin ◽  
Lithology Identification ◽  
Open Hole ◽  
Pulsed Neutron

Abstract Ukraine ranks the third largest gas reserves in Europe. Gas production is carried out mainly from the Dnieper-Donets Basin (DDB). A gradual decline in reserves is forcing Ukraine to actively search for possible sources to increase reserves by finding bypassed gas intervals in existing wells or exploration of new prospects. This paper describes 3 case studies, where advanced pulsed neutron logging technology has shown exceptional value in gas-bearing layer identification in different scenarios. The logging technology was applied for formation evaluation. The technology is based on the neutron interaction with the minerals and the fluids contained in the pore space. The logging tool combines measurements from multiple detectors and spacing for self-compensated neutron cross-capture section (sigma) and hydrogen index (HI), and the Fast Neutron Cross Section (FNXS) high-energy neutron elastic cross section rock property. Comprehensive capture and inelastic elemental spectroscopy are simultaneously recorded and processed to describe the elemental composition and the matrix properties, reducing the uncertainties related to drilling cuttings analysis, and overall, the petrophysical evaluation combined with other log outputs. The proposed methodology was tested in several wells, both in open hole and behind casing. In the study we present its application in three wells from different fields of the DDB. The log data acquisition and analysis were performed across several sandstone beds and carbonates formation with low porosities (<10%), in various combinations of casing and holes sizes. The results showed the robustness and effectiveness of using the advanced pulsed neutron logging (PNL) technologies in multiple cases: Case Study A: Enabling a standalone cased hole evaluation and highlighting new potential reservoir zones otherwise overlooked due to absence of open hole logs. Case Study B: Finding by-passed hydrocarbon intervals that were missed from log analysis based on conventional open hole logs for current field operator. Case Study C: Identifying gas saturated reservoirs and providing solid lithology identification that previously was questioned from drilling cuttings in an unconventional reservoir.

A system dynamics investigation of project portfolio management evolution in the energy sector

Kybernetes ◽  
2019 ◽  
Vol 49 (2) ◽  
pp. 505-525
Author(s):  
Seyed Hossein Hosseini ◽  
Hamed Shakouri G. ◽  
Aliyeh Kazemi ◽  
Rahman Zareayan ◽  
Milad Mousavian H.
Keyword(s):  
System Dynamics ◽  
Portfolio Management ◽  
Business Processes ◽  
Systems Approach ◽  
Energy Sector ◽  
Project Portfolio ◽  
Project Portfolio Management ◽  
Content Type ◽  
Portfolio Strategies

Purpose Project portfolio management (PPM) is a commonly used technique to align projects with strategy and to ensure adequate resourcing for projects. In this paper, to gain a better understanding of PPM dynamics, a system dynamics (SD) model was developed. To do so, an Iranian independent power producer was used as a case study in the energy sector; moreover, policy options were derived and generalized for such a developer company. Design/methodology/approach To cope with the complexity of business processes in a power producer company and to formulate an optimum policy, causal relations and loops were derived first and then state-flow diagrams were designed to simulate the problem in the system, as it is usual in the SD methodology. Findings The proposed model was applied to a real-world case study to rectify managers’ viewpoint about their business dynamics and to formulate new project portfolio strategies to improve the viability of the company. The model proved how a static portfolio analysis can misguide managers in planning their project portfolio strategies, and how effective feedback can improve PPM in developing companies in the energy sector. Originality/value Systems approach, especially SD methodology, has been rarely used to analyze PPM problems in the energy sector. This study highlights the implications of feedback and dynamics in PPM and tries to derive optimal value of portfolios.

Technology Outlook and Sustainability of the Synthetic Natural Gas Production Process Derived From Coal

2013 ◽  
Author(s):  
Orlando M. Ramirez ◽  
Lesme Corredor
Keyword(s):  
Natural Gas ◽  
Large Scale ◽  
Fossil Fuel ◽  
Sustainability Assessment ◽  
Energy Content ◽  
High Energy ◽  
Gas Production ◽  
Synthetic Natural Gas ◽  
Capital Costs ◽  
Technical Performance

Natural gas is the most environmental friendly fossil fuel with a high energy content and has a promising future within the energy consumption outlook. For this reason, its production from coal is gaining a significant interest, converting the most abundant, stable, and low price fossil fuel to synthetic natural gas (SNG). In this paper a technology outlook and a sustainability assessment of the technical, economical, and environmental factors is developed. It was found that the sustainability of the process depends mainly on the local price of coal and natural gas, as well as, emerging SNG technologies, also known as direct methanation. The conventional methanation process, the indirect methanation, has high capital costs but it is currently the only proven large scale technology. Although the emerging technology has not yet been tested at a commercial scale, it has a better technical performance with an net efficiency increase of more than 10 percent as results of the process stage reduction which should lead to lower capital costs requirements. Regarding the environmental performance, the conventional process produces large amounts of CO2, approximately 1.3 kg CO2 for each kg of coal, that has to be compressed and sequestered to meet the environmental targets.

scholarly journals Analysis of the water, energy, and food nexus using system archetypes: A case study in the Jatiluhur reservoir, West Java, Indonesia

2020 ◽  
Author(s):  
muhamad bahri
Keyword(s):  
System Dynamics ◽  
Water Availability ◽  
Water Distribution ◽  
End Users ◽  
Feedback Loops ◽  
Crucial Issue ◽  
Limits To Growth ◽  
Multiple Functions ◽  
System Archetypes

The reservoir usually has multiple functions such as hydropower and water distribution for different end users. Multiple functions and multiple agents also mean there are tradeoffs among multiple functions among different end users. Through feedback loops, the system dynamics tools concern on the interdependency and the complexity of the nexus elements. This paper applies the system archetypes in investigating water-energy-food-land nexus (WEFLN) in the Jatiluhur reservoir, the largest reservoir in Indonesia. Using the system archetypes. It is found that there are growth engines to support industrial, residential, and fisheries sectors. However, water availability will be a crucial issue that possibly bounds the growth engines. This situation is called the limits to growth archetype. Another system archetype, the success to successful, is also identified. This archetype reminds us the distribution of water and power should be adjusted accordingly to sustain the growth in all sectors including industry, residence, and fisheries.

scholarly journals “Application of environmental accounting reporting practices and problems regarding the presentation of it in Bangladesh” (A case study on fossil-fuel sector)

2017 ◽  
Vol 13 (2) ◽  
pp. 348
Author(s):  
Reajmin Sultana
Keyword(s):  
Natural Gas ◽  
Fossil Fuel ◽  
Energy Sector ◽  
Environmental Accounting ◽  
Energy Resources ◽  
Fossil Energy ◽  
Reporting Practices ◽  
Accounting Practice ◽  
The World

Environmental accounting and reporting is an emerging concept in Bangladesh, although many countries in the world, either developed or developing, are already practicing environmental accounting and reporting in their fossil-fuel sector. Fossil energy resources in Bangladesh consist primarily of natural gas. This study deals with what types of data are required & how these will be presented in environmental accounting. It attempts to portray progress and drawbacks of Petrobangla Companies in respect of environmental accounting practices & tries to provide suggestions for better reporting practices. As there is a sustainability problem in energy sector, specially fossil-fuel sector of Bangladesh and the situation of pollution of Bangladesh is huge, environmental accounting practice is crying need to solve these types of problem in Bangladesh.

PROSPECTS OF OBTAINING ALTERNATIVE FUEL FROM VARIOUS BIOMASS AND WASTE SPECIES IN AZERBAIJAN

2019 ◽  
pp. 25-41
Author(s):  
O. M. Salamov ◽  
F. F. Aliyev
Keyword(s):  
Power Plants ◽  
Energy Intensity ◽  
Oil And Gas ◽  
Renewable Energy Sources ◽  
Calorific Value ◽  
High Energy ◽  
Energy Sector ◽  
Energy Sources ◽  
Mineral Fertilizers ◽  
Gaseous Fuels

The paper discusses the possibility of obtaining liquid and gaseous fuels from different types of biomass (BM) and combustible solid waste (CSW) of various origins. The available world reserves of traditional types of fuel are analyzed and a number of environmental shortcomings that created during their use are indicated. The tables present the data on the conditional calorific value (CCV) of the main traditional and alternative types of solid, liquid and gaseous fuels which compared with CCV of various types of BM and CSW. Possible methods for utilization of BM and CSW are analyzed, as well as the methods for converting them into alternative types of fuel, especially into combustible gases.Reliable information is given on the available oil and gas reserves in Azerbaijan. As a result of the research, it was revealed that the currently available oil reserves of Azerbaijan can completely dry out after 33.5 years, and gas reserves–after 117 years, without taking into account the growth rates of the exported part of these fuels to European countries. In order to fix this situation, first of all it is necessary to use as much as possible alternative and renewable energy sources, especially wind power plants (WPP) and solar photovoltaic energy sources (SFES) in the energy sector of the republic. Azerbaijan has large reserves of solar and wind energy. In addition, all regions of the country have large reserves of BM, and in the big cities, especially in industrial ones, there are CSW from which through pyrolysis and gasification is possible to obtain a high-quality combustible gas mixture, comprising: H2 + CO + CH4, with the least amount of harmful waste. The remains of the reaction of thermochemical decomposition of BM and CSW to combustible gases can also be used as mineral fertilizers in agriculture. The available and projected resources of Azerbaijan for the BM and the CSW are given, as well as their assumed energy intensity in the energy sector of the republic.Given the high energy intensity of the pyrolysis and gasification of the BM and CSW, at the present time for carrying out these reactions, the high-temperature solar installations with limited power are used as energy sources, and further preference is given to the use of WPP and SFES on industrial scale.

scholarly journals System Dynamics-Multiple Objective Optimization Model for Water Resource Management: A Case Study in Jiaxing City, China

Water ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 671
Author(s):  
Xiaoying Zhou ◽  
Feier Wang ◽  
Kuan Huang ◽  
Huichun Zhang ◽  
Jie Yu ◽  
...  
Keyword(s):  
Resource Management ◽  
System Dynamics ◽  
Water Resource ◽  
Water Allocation ◽  
Water Resource Management ◽  
Water Shortage ◽  
Multiple Objective ◽  
Multiple Objective Optimization ◽  
Model Framework

Predicting and allocating water resources have become important tasks in water resource management. System dynamics and optimal planning models are widely applied to solve individual problems, but are seldom combined in studies. In this work, we developed a framework involving a system dynamics-multiple objective optimization (SD-MOO) model, which integrated the functions of simulation, policy control, and water allocation, and applied it to a case study of water management in Jiaxing, China to demonstrate the modeling. The predicted results of the case study showed that water shortage would not occur at a high-inflow level during 2018–2035 but would appear at mid- and low-inflow levels in 2025 and 2022, respectively. After we made dynamic adjustments to water use efficiency, economic growth, population growth, and water resource utilization, the predicted water shortage rates decreased by approximately 69–70% at the mid- and low-inflow levels in 2025 and 2035 compared to the scenarios without any adjustment strategies. Water allocation schemes obtained from the “prediction + dynamic regulation + optimization” framework were competitive in terms of social, economic and environmental benefits and flexibly satisfied the water demands. The case study demonstrated that the SD-MOO model framework could be an effective tool in achieving sustainable water resource management.

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