Porosity and storage capacity of Middle Devonian shale: A function of thermal maturity, total organic carbon, and clay content

Song, Liaosha; Martin, Keithan; Carr, Timothy R.; Ghahfarokhi, Payam Kavousi

doi:10.1016/j.fuel.2018.12.106

Cited by 55 publications

(22 citation statements)

References 32 publications

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“…Moreover, the storage capacity is highly influenced by the origin and the maturation of organic matter. The adsorption capacity positively correlates with maturation as reported by different studies [20][21][22].…”

Section: Gas Accumulationsupporting

confidence: 66%

“…Unlike conventional oil and gas reservoirs, where the matrix is not organic in nature, the matrix of CBM reservoir is organic and contains 10-30% inorganic ash. The coal matrix is classified as brittle and friable due to low Young's modulus values and a high poison ratio [20]. The amount of gas content in a coal seam is determined by the coal's rank, which is measured by the quality and thermal maturity of the organic material [19].…”

Section: Reservoir Propertiesmentioning

confidence: 99%

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Reserves Estimation for Coalbed Methane Reservoirs: A Review

et al. 2020

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A continuous growth in the global economy and population requires a sustainable energy supply. Maximizing recovery factor out of the naturally occurring hydrocarbons resources has been an active area of continuous development to meet the globally increasing demand for energy. Coalbed methane (CBM), which is one of the primary resources of natural gas, associates complex storage mechanisms and requires some advanced recovery techniques, rendering conventional reserve assessment methods insufficient. This work presents a literature review on CBM in different aspects. This includes rock characteristics such as porosity, permeability, adsorption capacity, adsorption isotherm, and coal classification. In addition, CBM reservoirs are compared to conventional reservoirs in terms of reservoir quality, reservoir properties, accumulation, and water/gas saturation and production. Different topics that contribute to the production of CBM reservoirs are also discussed. This includes production mechanisms, well spacing, well completion, and petrophysical interpretations. The main part of this work sheds a light on the available techniques to determine initial-gas-in-place in CBM reservoirs such as volumetric, decline curve, and material balance. It also presents the pros and cons of each technique. Lastly, common development and economic challenges in CBM fields are listed in addition to environmental concerns.

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Section: Gas Accumulationsupporting

confidence: 66%

Section: Reservoir Propertiesmentioning

confidence: 99%

Reserves Estimation for Coalbed Methane Reservoirs: A Review

et al. 2020

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“…As part of MSEEL's initiative, the geology of this site has been wellcharacterized [56][57][58] . Marcellus shale at the MSEEL site primarily consists of siliciclastic mudstones with interbedded carbonates 57 .…”

Section: Methodsmentioning

confidence: 99%

Reduced methane recovery at high pressure due to methane trapping in shale nanopores

Neil

Mehana

Hjelm

et al. 2020

Commun Earth Environ

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By 2050, shale gas production is expected to exceed three-quarters of total US natural gas production. However, current unconventional hydrocarbon gas recovery rates are only around 20%. Maximizing production of this natural resource thus necessitates improved understanding of the fundamental mechanisms underlying hydrocarbon retention within the nanoporous shale matrix. In this study, we integrated molecular simulation with high-pressure small-angle neutron scattering (SANS), an experimental technique uniquely capable of characterizing methane behavior in situ within shale nanopores at elevated pressures. Samples were created using Marcellus shale, a gas-generative formation comprising the largest natural gas field in the United States. Our results demonstrate that, contrary to the conventional wisdom that elevated drawdown pressure increases methane recovery, a higher peak pressure led to the trapping of dense, liquid-like methane in sub-2 nm radius nanopores, which comprise more than 90% of the measured nanopore volume, due to irreversible deformation of the kerogen matrix. These findings have critical implications for pressure management strategies to maximize hydrocarbon recovery, as well as broad implications for fluid behavior under confinement.

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“…Efeitos negativos da densidade sobre a estrutura do solo devem ser mitigados através da deposição constante de matéria orgânica do solo. Já que o carbono orgânico do solo, proveniente da MOS atua fortemente na porosidade e estrutura dos poros, elevando a capacidade de armazenamento e a dinâmica de gases (Song et al, 2019). Singh et al (2019) avaliando o crescimento e produtividade de algodoeiro em um solo de textura argilo-arenosa na Índia, observaram que a redução de densidade do solo elevou a produtividade do algodão por três safras consecutivas.…”

Section: Coeficiente De Correlação De Pearson (R)unclassified

Saúde do solo de um Planossolo sob sistema de integração lavoura-pecuária-floresta através de análise multivariada

Silva

Oliveira

Martins

et al. 2020

RSD

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O objetivo deste trabalho foi avaliar a saúde de um solo sob sistema de integração Lavoura-Pecuária-Floresta através da análise multivariada dos atributos físicos, químicos e físico-hídricos do solo. O experimento foi implantado em um Planossolo Háplico de textura franco-arenosa no município de Alagoinha/PB, sob os seguintes consórcios em delineamento experimental de blocos casualizados: i) Br. decumbens + Gliricidia sepium (BG); ii) Br. decumbens + Mimosa caesalpiniifolia (BS); iii) Br. decumbens + Tabebuia alba (BI); iv) Br. decumbens + Zea mays (LA); v) Brachiaria decumbens (BD). Amostras (indeformadas e deformadas) de solo foram coletadas para avaliar propriedades físicas, físico-hídricas e químicas do solo nas camadas de 0,0-0,1; 0,1-0,2 e 0,2-0,3 m. As médias foram analisadas através da análise de componentes principais e correlação de Pearson (p<0,05). Os resultados indicaram que o Lavoura anual conseguiu agrupar o maior número de propriedades relacionadas à qualidade estrutural do solo. A densidade do solo apresentou correlações positivas e negativas com a maioria das propriedades físicas analisadas. Em relação as propriedades químicas, detectou-se maior agrupamento nos sistemas LA e BG na camada de 0-0,1 cm. Conclui-se que a análise multivariada é uma opção viável para avaliação da saúde do solo, por agrupar o maior número de propriedades possíveis dentro do sistema de manejo mais predominante.

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Porosity and storage capacity of Middle Devonian shale: A function of thermal maturity, total organic carbon, and clay content

Cited by 55 publications

References 32 publications

Reserves Estimation for Coalbed Methane Reservoirs: A Review

Reserves Estimation for Coalbed Methane Reservoirs: A Review

Reduced methane recovery at high pressure due to methane trapping in shale nanopores

Saúde do solo de um Planossolo sob sistema de integração lavoura-pecuária-floresta através de análise multivariada

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