Combustion enhance recovery of shale gas

Chapiro, Grigori; Bruining, J.

doi:10.1016/j.petrol.2015.01.036

Cited by 29 publications

(23 citation statements)

References 32 publications

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“…Hence, a large-scale extraction of the shale gas from the tight shale matrix is challenging. Recently, the combustion treatment has been proposed for shale gas recovery (Chapiro and Bruining 2015;Chen et al 2017b). Combustion treatment not only provides energy for gas desorption from pore surfaces but also promotes the gas transport by improving the permeability (Chen et al 2017b(Chen et al , 2018a(Chen et al , 2019c.…”

Section: Introductionmentioning

confidence: 99%

Thermally enhanced shale gas recovery: microstructure characteristics of combusted shale

et al. 2020

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Recently, thermal recovery technologies such as combustion have been studied for shale gas recovery. Thus, understanding of the microstructure of combusted shale is essential for evaluating the effects of thermal treatment on shale gas transport capacity. In this study, the effect of combustion on shale microstructure changes was investigated. Firstly, different-sized shale samples were combusted at 450 °C for 30 min. Afterward, shale microstructure properties including surface topographies, porosity and permeability of the raw and combusted shale samples were measured and compared. It was found that the pore volume and specific surface area increased after combustion, especially for small pulverized samples. According to surface topography obtained from atomic force microscope, more rough surfaces were obtained for the combusted shale due to larger pores and generation of thermal fractures caused by the removal of organic matter. Based on the mercury intrusion porosimetry measurements, the porosity of the shale samples increased from 2.79% to 5.32% after combustion. In addition, the permeability was greatly improved from 0.0019 to 0.6759 mD, with the effective tortuosity decreased from 1075.40 to 49.27. As a result, combustion treatment can significantly improve the gas transport capacity.

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Section: Introductionmentioning

confidence: 99%

Thermally enhanced shale gas recovery: microstructure characteristics of combusted shale

et al. 2020

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“…Ozturk determined the inlet temperature increment raises NO x and reduces CO emissions, the rising humidity ratio decreases NO x , and the ascending inlet pressure uplifts NO x by Ansys software [6]. Chapiro and Bruining presented the parameters to reach the optimal temperature for providing the permeability at the shale gas combustion [7]. Cohen and Winkler detected the intensity of greenhouse gas emissions of shale gas fired electricity between 0.3 and 0.6 tCO 2 /MWh in South Africa [8] Combustion of Shale Gas [10].…”

Section: Introductionmentioning

confidence: 99%

Effects of CO2, H2O and N2 Dilutions on Emission Characteristics and Partially Premixed Combustion of Shale Gas

Ozturk*

2019

IJEAT

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Environmental constraints of countries on hazardous emissions promote the usage of gas fuels in combustion systems for energy production. The shale gas recently shines out as one of the promising gas fuels of the future owing to its wide reserves discovered in the different gas fields of countries. This study numerically focuses on the emission characteristics and turbulent adiabatic combustion of partially premixed shale gas and humid air with dilution effects of CO2, H2O, and N2 under different pressures. Ansys codes are used for the numerical computations of computational fluid dynamics on 2D model of a co-axial type combustor to find out the emissions and flame speeds during the combustion of shale gas and air. Based on the results, the maximum NO mass fractions are obtained at 1.42, 1.44, and 1.4 equivalence ratios for Barnette, New Albany, and Haynesville. The increasing equivalence ratio raises the mass fractions of CO and turbulent flame speeds. The rising CO2 dilution into the additional air diminish the flame speeds, NO and CO fractions. The growing H2O addition decreases NO and CO mass fractions. On the contrary, it augments the flame speeds. The enhancing N2 dope decreases NO and rears CO mass fractions. The rising pressure with 15% CO2 dilution fades up the turbulent flame speeds, NO and CO fractions. The pressure increment with 15% H2O dope reduces CO and the flame speeds. But, it lightly relieves NO fractions. The growing pressure with 15% N2 addition abates the mass fractions of CO and turbulent flame speeds.

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“…The shale gas reservoir is characterized by ultra-low matrix permeability, organic-rich deposition, and mineral-filled natural fractures. Current mainstream technologies available for commercial development of shale gas are horizontal drilling plus hydraulic fracturing, which can largely enhance reservoir permeability [2][3][4][5][6]. After hydraulic fracturing, the gas production rate is dramatically enhanced in the short term but this high production rate drops quickly in the longer term [7].…”

Section: Introductionmentioning

confidence: 99%

“…Different heating technologies, such as an electrical heater, hot water flooding, high-temperature steam, in-situ combustion, and electromagnetic heating (microwave/radio frequency) and so on, were applied to the oil and gas industry [4,6,[15][16][17]. It is asserted that the heat treatment of shale gas reservoirs can enhance permeability in a similar way for oil shales [3,13]. The combustion and pyrolysis can remove organic matter and decompose minerals from shale and further increase shale matrix permeability [4,6].…”

Section: Introductionmentioning

confidence: 99%

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A Fully Coupled Numerical Model for Microwave Heating Enhanced Shale Gas Recovery

Liu,

Wang,

Leung

et al. 2018

Energies

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Formation heat treatment (FHT) can be achieved by converting electromagnetic energy into heat energy (that is microwave heating or MWH). Experimental evidence shows that such FHT can significantly enhance oil and gas recovery. As relatively few research studies have been reported on microwave heating enhanced shale gas recovery (MWH-EGR), a fully coupled electromagnetic-thermo-hydro-mechanical (ETHM) model is developed for the MWH-EGR in the present study. In the ETHM model, a thermal-induced gas adsorption model is firstly proposed for shale gas adsorption and fitted by experimental data. This thermal-induced adsorption model considers the increase of matrix pore space due to the desorption of the adsorbed phase. Further, a thermal-induced fracture model in shale matrix is established and fitted by experimental data. Finally, this ETHM model is applied to a fractured shale gas reservoir to simulate gas production. Numerical results indicated that the thermal-induced fracturing and gas desorption make predominant contributions to the evolution of matrix porosity. The MWH can increase cumulative gas production by 44.9% after 31.7 years through promoting gas desorption and matrix diffusion. These outcomes can provide effective insights into shale gas recovery enhancement by microwave assistance.

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Combustion enhance recovery of shale gas

Cited by 29 publications

References 32 publications

Thermally enhanced shale gas recovery: microstructure characteristics of combusted shale

Thermally enhanced shale gas recovery: microstructure characteristics of combusted shale

Effects of CO2, H2O and N2 Dilutions on Emission Characteristics and Partially Premixed Combustion of Shale Gas

A Fully Coupled Numerical Model for Microwave Heating Enhanced Shale Gas Recovery

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