Optimal Planning of Integrated Energy Systems for Offshore Oil Extraction and Processing Platforms

Abstract

With the introduction of new technologies, such as waste heat recovery units (WHRU), associated gas utilization, the energy flow coupling relationship is further deepened within the energy system of the offshore oil and gas production platform. Besides, the energy system is closely linked with the oil and gas production system, and a closed-loop relationship between energy flow and material flow can be revealed. Uncertainties of energy supply and production process may lead to system-wide fluctuations, which threaten the stable operation of the platform. Therefore, an optimal planning model of integrated energy system for offshore oil and gas production platform is proposed in this paper. Firstly, a generalized energy and material flow model is proposed, three matrixes are defined based on laws of thermodynamics, including energy matrix, process matrix and feedback matrix. Secondly, the energy-material conversion relationship between the energy system and production system of a typical offshore oil and gas platform is quantitatively described, together with the coupling between the input and output of the two systems. Thirdly, considering the energy-material balance constraints and the uncertainties of production system, a multi-objective stochastic planning model for the offshore integrated energy system is established, which takes economics and environmental protection into consideration. A Monte Carlo simulation-based NSGA-II algorithm is proposed to solve the model. Finally, the validity and feasibility of the proposed methodology are demonstrated through an offshore oil and gas platform in Bohai, China. Compared with the traditional planning method, the total cost and CO2 emissions of the proposed method are reduced by 18.9% and 17.3%, respectively.

Renewable Wave Energy Potential for the Sustainable Offshore Oil Platforms in South China Sea

“…Ardal, et al, has mentioned the power demand in the range of [40][41][42][43][44][45]. Zhang, et al, studied four offshore platforms, each with different activities (extraction, processing, support and maintenance, and storage) gives a peak power demand of approximately 44 MW [21]. Another difference is that the platforms may operate individually or work together to form a single and central power platform, providing power to the others.…”

“…Oliveira-Pinto, et al state that, 50 % of the energy supply was to be fulfilled by natural gas while diesel fuels supply the other 50 % [2]. On the other hand, Zhang, et al found co-firing turbines at the platforms which can run on natural gas, diesel, or hydrogen [21]. The energy demand for some of the offshore oil platforms is shown in Table I, where the energy requirements vary from 10 MW to 45 MW depending on the well sizes.…”

Risk Assessment of Offshore Micro Integrated Energy System Based on Fluid Mosaic Model

“…Therefore, the structure of OMIES can be equivalent to biological membrane FMM. In addition, the energy-material flow analysis starts from the energy flow model, the material flow model, and the energy-material flow feedback model, and analyzes the material-energy transfer and transformation process in OMIES [24]. Risk can be further expressed by the system's material-energy transfer and transformation, so OMIES energy flow and material flow are considered as risk carriers.…”

“…Since σ 1 and σ 2, Eq2 and Eq3 are also in the feedback part, their elements represent the same, but have different values. Each element in the substance and energy conversion matrix of the above model is the calculated value of the conversion relationship of the corresponding part [24], and each element of the risk flow matrix is the value of the operating state of the corresponding equipment under risk. The value is between 0 and 2, 0 means no output of the device, 1 means normal output, greater than 1 means overrun of the device, and a value between 0 ∼ 1 means derated operation of the device, the specific value is determined by the operating characteristics of the device.…”

Techno-Economic Evaluation of the Sizing and Operation of Battery Storage for Isolated Oil and Gas Platforms with High Wind Power Penetration

“…However, this introduces the problem of coupling the intermittent behavior of the wind power production with the high criticality and reliability requirements of the supplied loads. The critical point from a technical perspective is that the uncertainties associated to the energy supply and production processes can lead to system-wide power fluctuations, which can, in their turn, threaten the stability and reliability of the platform's operations [6], [7]. Facing this problem requires flexible solutions that may include advanced energy resources scheduling [8], efficient coordination of the various subsystems [9] and integrating an energy storage system in the platform's grid.…”