Reactive Thermal Reservoir Simulation: Hydrogen Sulphide Production in SAGD

Kapadia, Punitkumar R.; Wang, Jing Yi Jacky; Kallos, Michael S.; Gates, Ian D.

doi:10.2118/149448-ms

Cited by 13 publications

(4 citation statements)

References 11 publications

(5 reference statements)

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“…48 Numerous studies have reported a significant change in the physical properties of the liquid phase as well as gas generation according to the reaction temperature. 42,58 This behavior was studied in detail during the upgrading of Ashal'cha heavy crude oil. 59 Figure 4 depicts the change in the behavior in the liquid phase conversion into gas and solid phase products concerning the reaction temperature.…”

Section: Effect Of Experimental Conditionsmentioning

confidence: 99%

“…Aquathermolysis window is defined as the predominant chemical reactions in the temperature range between those sluggish chemical reactions below 200 °C that characterize slow thermal maturation of the reservoir content and the thermal cracking reactions (in the presence or absence of water) that are predominant around 300 °C and higher . Numerous studies have reported a significant change in the physical properties of the liquid phase as well as gas generation according to the reaction temperature. , This behavior was studied in detail during the upgrading of Ashal’cha heavy crude oil Figure depicts the change in the behavior in the liquid phase conversion into gas and solid phase products concerning the reaction temperature.…”

Section: Effect Of Experimental Conditionsmentioning

confidence: 99%

See 1 more Smart Citation

Experimental Considerations for Proper Development of Aquathermolysis Tests in Batch Reactor Systems

Tirado

Félix

Al‐Muntaser

et al. 2023

Ind. Eng. Chem. Res.

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Steam-based technologies are promising procedures with great potential for the recovery of heavy oil reserves. Particularly, catalytic aquathermolysis has been identified as a relevant technology for the permanent upgrading of heavy crude oil to increase the recovery factor. This technology requires appropriate experimentation for evaluation of the effect of operational conditions on product yield and quality and catalyst performance, and to determine reaction kinetics and mechanisms. Consequently, the procedures used to generate, interpret, and analyze the experimental data required for optimizing the aquathermolysis process need to be properly defined and applied. This work reports an exhaustive review of experimental results reported in the literature on diverse upgraded oil samples. The effect of operating reaction parameters, such as temperature, oil/water ratio, time, and catalyst dosage, was discussed in detail. Based on experimental results, some behaviors in gas production and viscosity reduction are highlighted and explained for the development of future studies. It was concluded that the upgrading of crude oil is mainly influenced by the reactivity of the chemical compounds involved, and a detailed analysis of the reaction system is required for the experimental development and scale-up.

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Section: Effect Of Experimental Conditionsmentioning

confidence: 99%

Section: Effect Of Experimental Conditionsmentioning

confidence: 99%

Experimental Considerations for Proper Development of Aquathermolysis Tests in Batch Reactor Systems

Tirado

Félix

Al‐Muntaser

et al. 2023

Ind. Eng. Chem. Res.

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“…Corrosion has always been a difficult problem in oil and gas field development systems due to many factors such as temperature, water content, pH, sulfide, and bacteria. With the deepening of domestic oilfield development, the water content of oil well production fluids is getting higher and higher, the composition is more and more complicated, and the corrosion of production well tubing is becoming more and more serious, which seriously affects the oil and gas field output and brings great challenge to production safety [1][2][3] . In response to the problem of tubing corrosion, domestic and foreign scholars have done a lot of research work and achieved many results [4][5][6] .…”

Section: Introductionmentioning

confidence: 99%

Study on Affecting Factors and Mechanism of Oil Tubing Corrosion in Northern Shaanxi Oil Field

Liu

Zhang

et al. 2020

MSF

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Tubing corrosion is a difficult problem in oilfield production. In order to explore the main factors influencing the tubing corrosion, this study first select some region of northern shaanxi 28 Wells, spent nearly 2 years of tubing corrosion weightlessness method of monitoring and analysis of physical and chemical properties of produced fluid to conduct a comprehensive system, then SPSS program is used to analyze the 11 influence factors such as temperature, moisture content, pH and the correlation of corrosion, at the same time in order to verify the accuracy of the statistical analysis of the results, the spot corrosion coupon for scanning electron microscopy (SEM) and energy spectrum analysis. The results show that the water content, chloride ion and sulfide of the produced fluid are relatively high, and the water quality is alkaline. Through grey correlation calculation, the correlation degree with corrosion rate is 0.8386, 0.8281 and 0.8281, respectively. The results of scanning electron microscopy and energy spectrum analysis are basically consistent with the statistical analysis, indicating that the property of produced fluid can be used to predict the corrosion status of tubing.

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“…Kapadia et al (2010) has proposed a comprehensive kinetic model targeted to the modeling of H 2 generation during in-situ combustion processes, by considering reactions of pyrolysis, aquathermolysis, gasification, and combustion of Athabasca bitumen (18 reactions), the thermodynamic model being based on 10 hydrocarbon components, including standard gaseous components (among which H 2 S), two pseudo components representing maltenes and asphaltenes, and one additional representing a mixture of heavy gases. For reservoir simulation of the H 2 S production during a Steam Assisted Gravity Drainage (SAGD) process, Kapadia et al (2011Kapadia et al ( , 2012 have adopted a simpler thermo-kinetic model, based on 7 reactions and 7 hydrocarbon components, maltenes and asphaltenes of the prior model being re-lumped in a single "Bitumen" pseudo component. The kinetic parameters (frequency factor, activation energy) of 6 reactions have been used for matching the simulation results to field data, the frequency factors appearing several orders of magnitude lower than those given by Kapadia et al (2010).…”

Section: Introductionmentioning

confidence: 99%

Forecasting of H2S Production due to Aquathermolysis Reactions

2013

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Steam injection has been recognized as an efficient process for recovering hydrocarbons from heavy oil and bitumen reservoirs. However, it is now well known that the steam injection induces chemical reactions within the reservoir, called aquathermolysis and yielding acid gases. Hydrogen sulfide (H 2 S) being highly toxic and highly corrosive, even at low concentrations, it is of major importance to forecast H 2 S production. However, until now, there are only very few publications relating reservoir simulations of steam injection processes accounting for thermal and compositional effects in a chemically reactive context.The proposed paper relates a work focused on H 2 S production forecast during a SAGD process from aquathermolysis experimental results and simulation. After a description of the aquathermolysis experiments, the simplified sulfur-based kinetic model deduced from the experimental results is presented. This sulfur-based kinetic model has been used to build a thermo-kinetic component-based model usable in a compositional and thermal reservoir simulation. A simulation of the experimental aquathermolysis reactor being run for validating the thermo-kinetic model, the simulation results of H 2 S production and oil SARA composition versus time are shown to be in good agreement with the experimental results.Then, the thermo-kinetic modeling has been input in a cross-section model designed for simulating a SAGD process. The H 2 S production results were found to be consistent with published field data.The work related in the paper contributes to provide a new insight to the simulation of H 2 S production by aquathermolysis, through the presentation of a simplified modeling of the aquathermolysis reactions, and the description of a methodology for building an EOS (Equation Of State) model compatible with the reactive model.The followed approach is shown to be usable for forecasting H 2 S production due to an aquathermolysis phenomenon during a steam injection process.

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Reactive Thermal Reservoir Simulation: Hydrogen Sulphide Production in SAGD

Cited by 13 publications

References 11 publications

Experimental Considerations for Proper Development of Aquathermolysis Tests in Batch Reactor Systems

Experimental Considerations for Proper Development of Aquathermolysis Tests in Batch Reactor Systems

Study on Affecting Factors and Mechanism of Oil Tubing Corrosion in Northern Shaanxi Oil Field

Forecasting of H2S Production due to Aquathermolysis Reactions

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