Single and multiple objective optimization of a natural gas liquefaction process

Song, Rui; Cui, Mengmeng; Liu, Jianjun

doi:10.1016/j.energy.2017.02.073

Cited by 89 publications

(25 citation statements)

References 32 publications

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“…14 Another popular topic on steady-state pipeline problems is multiobjective optimization, where typical conflicting objectives are minimizing compressor power consumption and maximizing transported gas volume. 15,16 However, steady-state models cannot describe transient behaviors of gas for short-term operations, where the gas state changes over time due to process disturbance, market fluctuation, etc. Therefore, dynamic models with time-varying differential equations are often formulated to handle it.…”

Section: Mikolajková Et Al Linearized the Minlp Model Of Pipeline Nementioning

confidence: 99%

“…Koch et al reformulated discrete aspects with complementarity constraints and a mathematical program with equilibrium constraints (MPEC) model was solved instead . Another popular topic on steady‐state pipeline problems is multiobjective optimization, where typical conflicting objectives are minimizing compressor power consumption and maximizing transported gas volume …”

Section: Introductionmentioning

confidence: 99%

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Dynamic optimization for gas blending in pipeline networks with gas interchangeability control

Kazi

Biegler

et al. 2020

AIChE Journal

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The increasing penetration of unconventional gas and liquefied natural gas poses an operational challenge on existing regional gas networks for gas quality problems. A new dynamic model for natural gas pipeline network with multiple supplies is presented with a special emphasis on gas interchangeability control. Wobbe index serves as gas interchangeability indicator and is calculated by equations derived from rigorous composition‐based partial differential equations. Disjunctive formulation is applied to represent different modes of gas blending due to gas reversal, and the disjunctive model is then reformulated as a nonsmooth model with min/max and absolute value functions, which is solved by a gradient‐based nonlinear program solver after smooth approximation. Moreover, a heuristic algorithm is proposed to tune the penalty parameters in order to focus on different penalty terms while keeping the model well‐conditioned. The developed model and strategy are first tested with a small pipeline network model and then extended to a large model. The results show that the model can effectively manage gas interchangeability issues in pipeline networks within reasonable CPU time.

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Section: Mikolajková Et Al Linearized the Minlp Model Of Pipeline Nementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dynamic optimization for gas blending in pipeline networks with gas interchangeability control

Kazi

Biegler

et al. 2020

AIChE Journal

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“…Imbibition plays an important role in the development of the fractured reservoirs and a great deal of work has been devoted to improving the recovery of TORs by studying imbibition. [33][34][35][36][37][38][39][40] Brownscomde and Dyes 33 discovered that natural imbibition, coupled with fracturing, can obtain more recovery than that for natural depletion by laboratory studies. Mattax and Pasons 34 explicitly defined the relationship between recovery behavior for a single reservoir matrix block and its size, and extended to analyze recovery behavior for fractured-matrix, water-driven reservoirs.…”

Section: Introductionmentioning

confidence: 99%

A Multi-Linear Fractal Model for Pressure Transient Analysis of Multiple Fractured Horizontal Wells in Tight Oil Reservoirs Including Imbibition

et al. 2019

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Most models for multiple fractured horizontal wells (MFHWs) in tight oil reservoirs (TORs) are based on classical simplified dual-porosity model that ignores the influence of imbibition, while the distribution of fracture system is heterogeneous, multi-scale and self-similar, which can be described by fractal dual-porosity model on fractal theory, and imbibition production is the important part of fracture system production. In this paper, a multi-linear fractal model (MFM) considering imbibition for MFHWs in TORs was established based on fractal theory and semi-analytical method. In this model, fractal theory was used to describe the heterogeneous, complex fracture network, and imbibition was considered by analogy of fluid crossflow law in fractured-porous dual media. And the approximate analytic solution was given by using the Laplace transformation and iteration method. The pressure responses in the domain of real time were obtained with Stehfest numerical inversion algorithms. The pressure transient and production rate were used to analyze, and sensitivity analysis of some related parameters were discussed. The results show that the fluid flow in MFHWs can be divided into nine main flow periods by analysis of type curves, and the fractal parameters of fracture system have great effect on the middle and later periods and imbibition influences the period of crossflow.

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“…In terms of non-Darcy flow, scholars have studied it by means of direct experiments, numerical derivation, or combined conceptual models. And a series of results have been obtained in the study of nonlinear percolation mechanism [22][23][24][25][26][27][28]. Miller and Low found the presence of a threshold gradient for water flow in clays and proved that no flow occurs when the hydraulic gradient is below the threshold gradient [23].…”

Section: Introductionmentioning

confidence: 99%

A Generalized Capillary Imbibition Model for Porous Media in Tight Reservoirs

Wang

Yang

Ding

et al. 2018

Advances in Civil Engineering

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Capillary imbibition models have been widely studied in oil and gas development field over the past decades. However, the existing models applied to the tight reservoirs rarely take fluid flow resistance and apparent viscosity into account. To investigate the capillary imbibition characteristics of fluids in tight porous media, a generalized capillary imbibition model considering the flow resistance and apparent viscosity of fluids in tight porous media is derived. By comparing with the results of other capillary imbibition models and experimental data, the derived capillary imbibition model is verified. In addition, compared with the conventional capillary imbibition models, the derived capillary imbibition model is more consistent with the experimental results and has a wider applicability. The imbibition distance of water in tight reservoirs can also be obtained using the derived capillary imbibition model, which will facilitate the study on water injection development in tight oil and gas reservoirs.

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Single and multiple objective optimization of a natural gas liquefaction process

Cited by 89 publications

References 32 publications

Dynamic optimization for gas blending in pipeline networks with gas interchangeability control

Dynamic optimization for gas blending in pipeline networks with gas interchangeability control

A Multi-Linear Fractal Model for Pressure Transient Analysis of Multiple Fractured Horizontal Wells in Tight Oil Reservoirs Including Imbibition

A Generalized Capillary Imbibition Model for Porous Media in Tight Reservoirs

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