Centralized power generation with carbon capture on decommissioned offshore petroleum platforms

Flórez-Orrego, Daniel; Freire, Ronaldo Lucas Alkmin; Silva, Júlio Augusto Mendes da; Neto, Cyro Albuquerque; Oliveira, Silvio de

doi:10.1016/j.enconman.2021.115110

Cited by 11 publications

(6 citation statements)

References 22 publications

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“…Those probability values are used to look up into the normal probability density function in order to determine the yearly random cost of natural gas at each year of the project lifespan. In this way, different profiles of natural gas cost can be generated, allowing to simulate the uncertainty about the natural gas price, instead of assuming a constant natural gas cost along that lifespan (Flórez-Orrego et al, 2022). Since this task is probabilistic in nature, the larger the amount of simulations conducted using random profiles, the higher the statistical probability of getting sufficient outliers to render the variance analysis meaningful.…”

Section: Monte Carlo Methods Used For Estimating the Stochastic Profi...mentioning

confidence: 99%

“…GTPRO ® suite of Thermoflow ® has been used to design, size and economically asses the MPUs, based on its extensive libraries of commercially available equipment. A multi-objective genetic algorithm is executed using OptimTool toolbox of Matlab ® software to determine the best configurations of MPUs (Flórez-Orrego et al, 2022). The targets are weighed according to desired decision criteria (area: 0.1, weight: 0.1, investment cost: 0.4 and efficiency: 0.4) in order to generate single objective-based solutions whose performance can be later analysed at offdesign operating conditions by using GTMASTER ® and MACRO ® suites of Thermoflow ® .…”

Section: Process Modelingmentioning

confidence: 99%

“…Despite their relevance, those research works neither presented detailed economic analyses considering carbon taxations and variation of CCS unit cost, nor estimated the constrained space and weight allowances when the topsides of the power hub are installed on decommissioned offshore platforms. More recently, Flórez-Orrego et al (2022) performed an optimization process of the dispatch and load distribution among a set of modular power units (MPUs) equipped with carbon capture systems, aiming to supply the time-varying power demands of four identical FPSOs. The incremental economic analysis has considered the variation of the specific cost of the carbon capture unit, the carbon tax and the interest rate.…”

Section: Introductionmentioning

confidence: 99%

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Offshore Utility Systems for FPSOs: A Techno-Environomic Assessment Considering the Uncertainty About the Natural Gas Price

et al. 2022

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Due to restricted weight and space budget on floating production, storage and offloading units (FPSO), the offshore utility systems have been limited to low-efficiency energy technologies. Moreover, owing to time-varying energy demands of the FPSOs, the existing cogeneration systems incur oversizing issues and mostly operate at offdesign conditions during the lifespan. This situation increases the fuel consumption and accentuates the environmental impact of the offshore oil and gas sector. Accordingly, a power hub emerges as an interesting alternative to the conventional utility system, featuring more efficient and environmentally friendly energy solutions. Nevertheless, power hubs are not free from challenges, typically related to the incremental costs of additional power generation and transmission equipment and costly carbon abatement units. Thus, uncertain natural gas price, carbon taxation, and delay in entry of operation between productive platforms should be thoroughly considered in anticipation of the impact of volatile market prices and more stringent environmental regulations on the operational results of the assets. In this work, a comparative incremental assessment between the existing cogeneration system and four alternative power hub setups is performed to shed light on the potential benefits of adopting the centralized offshore power stations. Among those benefits are augmented revenues with gas exportation, optimal sizing and load dispatch process, and reduced number of idle power units, oftentimes required only for attending the peak demand that occurs in a short interval of the whole lifespan of the hub. As a result, it is found that by increasing the delay in entry of operation, the opportunity cost arisen from the money depreciation and the variation of the gas price over time substantially hampers the economic feasibility, showing a trade-off between the best thermodynamic performance, the lowest environmental burden, and the most profitable operating conditions.

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Section: Monte Carlo Methods Used For Estimating the Stochastic Profi...mentioning

confidence: 99%

Section: Process Modelingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Offshore Utility Systems for FPSOs: A Techno-Environomic Assessment Considering the Uncertainty About the Natural Gas Price

et al. 2022

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“…With an offshore platform exclusively for power generation, the tradeoff between space requirements for more efficient power generation and the processing plant capacities for maximum economical output ceases to exist. This would enable the adoption of more efficient generation technologies such as Combined Cycle Gas Turbines (CCGTs) [10] and Carbon Capture and Storage (CCS) units [11]. Hence, the power generation could be displaced from the OCGTs aboard the FPSOs to the power hub for a more sustainable approach.…”

Section: Introductionmentioning

confidence: 99%

“…Concerning the possible adoption of the power hub, researchers have focused their attention to the exergy analysis [3] and emission studies [12]; optimization of the power generating module [9], [13]; its integration with CCS [11] and its economical evaluation [12], [14]. However, in the literature, there are only a few and not very up-to-date papers that investigate the electrical system stability of modern and isolated offshore power grids.…”

Section: Introductionmentioning

confidence: 99%

Assessment of an Isolated Offshore Power Grid Based on the Power Hub Concept for Pre-Salt Oil and Gas Production

et al. 2022

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Towards a future with more renewable energy, oil and gas (O&G) will still play a major role in the energy and mobility sectors. Therefore, scientists must also investigate ways to mitigate carbon emissions in O&G production. In this sense, a power hub with local generation can be employed in offshore production sites to allow the adoption of more efficient power generation technologies without the weight and space constraints that exist in usual Floating Production, Storage and Offloading (FPSO) platforms. This power hub can be connected to the FPSOs forming an isolated offshore power grid that requires further study. This work investigates stability issues of such offshore power networks. Simulations of a system composed by the power hub and three identical FPSO units were performed in PSCAD, and the stability of the system was validated according to the IEC 61892-1 standard. Results demonstrate that it is possible to operate such system with a stable and secure supply. The main contributions of this work are the electrical modeling of the power hub and of the resulting isolated offshore electrical grid, and a detailed discussion of the rising challenges and the required models for dynamic electrical studies.

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Reduction of carbon intensity of electrification by reservoir-to-wire integration with CO2 capture and storage: conceptual design and analysis

Boa Morte,

Poblete,

Morgado

et al. 2023

Clean Techn Environ Policy

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Centralized power generation with carbon capture on decommissioned offshore petroleum platforms

Cited by 11 publications

References 22 publications

Offshore Utility Systems for FPSOs: A Techno-Environomic Assessment Considering the Uncertainty About the Natural Gas Price

Offshore Utility Systems for FPSOs: A Techno-Environomic Assessment Considering the Uncertainty About the Natural Gas Price

Assessment of an Isolated Offshore Power Grid Based on the Power Hub Concept for Pre-Salt Oil and Gas Production

Reduction of carbon intensity of electrification by reservoir-to-wire integration with CO2 capture and storage: conceptual design and analysis

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