Upscaling methane hydrate dissociation kinetic model during depressurisation

Yang, Junyu; Xu, Qianghui; Liu, Zhiying; Shi, Lin; Lei, Timan; Luo, Kai

doi:10.1016/j.ces.2023.118742

Cited by 6 publications

(3 citation statements)

References 50 publications

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“…Several polymer flooding projects and experiments have been implemented worldwide in order to increase oil recovery and reduce water production through mobility control [ 86 , 98 , 99 , 100 , 101 , 102 , 103 , 104 , 105 , 106 , 107 , 108 , 109 , 110 , 111 , 112 , 113 , 114 , 115 , 116 , 117 , 118 , 119 , 120 ]. A summary of some field studies conducted in different countries worldwide using polymer flooding is provided in Table 3 .…”

Section: Discussionmentioning

confidence: 99%

Evaluating Factors Impacting Polymer Flooding in Hydrocarbon Reservoirs: Laboratory and Field-Scale Applications

Khlaifat,

Fakher,

Harrison

2023

Polymers

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Polymer flooding is an enhanced oil recovery (EOR) method used to increase oil recovery from oil reservoirs beyond primary and secondary recovery. Although it is one of the most well-established methods of EOR, there are still continuous new developments and evaluations for this method. This is mainly attributed to the diverse polymers used, expansion of this method in terms of application, and the increase in knowledge pertaining to the topic due to the increase in laboratory testing and field applications. In this research, we perform a review of the factors impacting polymer flooding in both laboratory studies and field-based applications in order to create guidelines with respect to the parameters that should be included when designing a polymer flooding study or application. The main mechanism of polymer flooding is initially discussed, along with the types of polymers that can be used in polymer flooding. We then discuss the most prominent parameters that should be included when designing a polymer flooding project and, based on previous laboratory studies and field projects, discuss how these parameters impact the polymer itself and the flooding process. This research can provide guidelines for researchers and engineers for future polymer flooding research or field applications.

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Section: Discussionmentioning

confidence: 99%

Evaluating Factors Impacting Polymer Flooding in Hydrocarbon Reservoirs: Laboratory and Field-Scale Applications

Khlaifat,

Fakher,

Harrison

2023

Polymers

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“…49,50 Accurately capturing the complex multiphysics phenomena within the pore structure is critical for these models. While substantial progress has been made in understanding permeability 36,[44][45][46][47][48]51 and kinetic models for dissociation reactions, 22,25,[52][53][54] further exploration is required, especially in the context of real hydrate reservoir structures.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional pore-scale study of methane hydrate dissociation mechanisms based on micro-CT images

Yang,

Xu,

Kou

et al. 2024

The Innovation Energy

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<p>Methane hydrate is a promising source of alternative energy. An in-depth understanding of the hydrate dissociation mechanism is crucial for the efficient extraction. In the present work, a comprehensive set of pore-scale numerical studies of hydrate dissociation mechanisms is presented. Pore-scale lattice Boltzmann (LB) models are proposed to simulate the multiphysics process during methane hydrate dissociation. The numerical simulations employ the actual hydrate sediment pore structure obtained by the micro-CT imaging. Experimental results of xenon hydrate dissociation are compared with the numerical simulations, indicating that the observed hydrate pore habits evolution is accurately captured by the proposed LB models. Furthermore, simulations of methane hydrate dissociation under different sediment water saturations, fluid flow rates and thermal conditions are conducted. Heat and mass transfer limitations both have significant effects on the methane hydrate dissociation rate. The bubble movement can further influence the dissociation process. Dissociation patterns can be divided into three categories, uniform, non-uniform and wormholing. The fluid flow impacts hydrate dissociation rates differently in three-dimensional real structures compared to two-dimensional idealized ones, influenced by variations in hydrate pore habits and flow properties. Finally, upscaling investigations are conducted to provide the permeability and kinetic models for the representative elementary volume (REV)-scale production forecast. Due to the difference in the hydrate pore habits and dissociation mechanisms, the three-dimensional upscaling results contrast with prior findings from two-dimensional studies. The present work provides a paradigm for pore-scale numerical simulation studies on the hydrate dissociation, which can offer theoretical guidance on efficient hydrate extraction.</p>

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“…Rui et al observed that under gas-filled conditions, as the water migration rate increases, the hydraulic stability transitions from grain-coating hydrate to grain-filling hydrate and finally to load-bearing hydrate. Yang et al conducted a numerical simulation of hydrate dissociation by depressurization and revised the kinetic model but lacked analysis on the physical properties of hydrates. Zhao and Zhou proposed a color difference phase separation method to accurately segment the hydrate, pore, and grain phases, but the relationship between the observed phenomenon and the mechanism was still abstract.…”

Section: Introductionmentioning

confidence: 99%

Phase Transition Characteristics of Hydrate Formation Process in Microscale Pores

Deng,

Kou,

et al. 2024

Energy Fuels

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Gas hydrates are ubiquitous in nature, with their formation within microscale pores involving intricate physical and chemical process. Recent advancements in visualization methods have propelled further investigations into the formation mechanisms of gas hydrates. The exploration of characteristics pertaining to the hydrate formation process through visual data has emerged as a prominent research avenue. However, it is still difficult to directly point out the relationship between the visual phenomenon and mechanism with a systematic approach. This article focuses on discerning significant temporal changes and categorizes phase transition features of microscale pore hydrate formation into two distinct yet conceptually clear domains: distribution probability and phase transition probability. Then, a statistical discussion of these probabilities has been proposed. Distribution probability elucidates the structural performance and physical attributes of hydrates at the microscale, while phase transition probability offers insights into visualizing kinetic parameters of hydrate reactions, which are conventionally challenging to gauge using traditional sensors. These probabilities linked visual information to physical information. It enabled the quantitative statistical evaluation of various factors during the phase transition process of hydrates, moving beyond a mere visual qualitative analysis. In essence, this innovative methodology furnishes hitherto unexplored concepts and a systematic framework for investigating microscale interface reactions and illuminating their internal mechanisms and evolutionary principles.

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Upscaling methane hydrate dissociation kinetic model during depressurisation

Cited by 6 publications

References 50 publications

Evaluating Factors Impacting Polymer Flooding in Hydrocarbon Reservoirs: Laboratory and Field-Scale Applications

Evaluating Factors Impacting Polymer Flooding in Hydrocarbon Reservoirs: Laboratory and Field-Scale Applications

Three-dimensional pore-scale study of methane hydrate dissociation mechanisms based on micro-CT images

Phase Transition Characteristics of Hydrate Formation Process in Microscale Pores

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