Geochemical and petrophysical characteristics of Permian shale gas reservoirs of Raniganj Basin, West Bengal, India

Mendhe, Vinod Atmaram; Mishra, Subhashree; Varma, Atul Kumar; Kamble, Alka Damodhar; Bannerjee, Mollika; Singh, Bhagwan D.; Sutay, Tanmay; Singh, Vikram P.

doi:10.1016/j.coal.2018.01.012

Cited by 40 publications

(52 citation statements)

References 77 publications

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“…Thus, the energy insecurity of South Asia mainly originates from the lack of resources and rising imbalance of the demand and supply of energy sources. South Asian countries need to meet the increasing energy desire secure and reasonably priced energy sources [30]. South Asia has a potential imbalance between energy demand and supply from national energy sources which yields a resulting increasing import dependence on energy sources.…”

Section: Introductionmentioning

confidence: 99%

Measuring Energy Efficiency and Environmental Performance: A Case of South Asia

et al. 2019

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When assessing energy efficiency, most studies have frequently ignored environmental aspects even though the concept has been widely used in the past. This study evaluates the energy efficiency and environmental performance of South Asia by using DEA (data envelopment analysis) like mathematical composite indicator. We construct a comprehensive set of indicators, including an energy self-sufficiency ratio, energy production over consumption ratio, energy imports, diversification index of energy imports, energy reserve ratio, GDP productivity, energy intensity, per capita energy consumption index, carbon emission index, carbon emission index per unit of energy consumption and share of renewable energy in order to develop an energy efficiency and environmental performance index. Unlike other studies, this study first examines each indicator and then estimates a combined score for each country. The results reveal that Bhutan as a more secure country and Pakistan showed a decreasing trend, while Sri Lanka and India performed satisfactorily. Remarkably, Bangladesh, Nepal and Afghanistan showed a decreasing trend. This study proposes a policy that increases the cross-border trade of renewable energy for long term energy efficiency and environmental performance.

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Section: Introductionmentioning

confidence: 99%

Measuring Energy Efficiency and Environmental Performance: A Case of South Asia

et al. 2019

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“…In the studied shales, the existence of slit-shaped pores indicates ease flow of gas through interconnected pore network (Kuila and Prasad, 2013). Groen et al (2003) has suggested that the sorption hysteresis loop has been compressed as a result of fluctuating hemispheric circumference in the course of capillary condensation and evaporation in pores < 4 nm and pressure range below 0.40, may be due to the application of tensile strength (Mendhe et al, 2018b;Boruah et al, 2019). The plots of multilayer (BET method) and monolayer (Langmuir method) show the availability of surface area for the storage of gas in the studied shales, yielding up to < 10.5 m 2 /g and 18 m 2 /g, respectively.…”

Section: Discussionmentioning

confidence: 96%

“…Shale gas is considered as one of the most vital nonconventional energy resources in the world. It is generated by the thermal degradation of vegetal/organic matters present in shale sequences and trapped inside the micropore grid and fracture system of shale beds (Zhang et al, 2012;Yang et al, 2016;Mendhe et al, 2018b). Shales are having two basic units together controlling the structural characteristics and heterogeneity of the pores, which are organic matters (macerals = visual kerogen) and minerals (Curtis, 2002).…”

Section: Discussionmentioning

confidence: 99%

Pore structures and fractal dimensions in Early Permian Barakar shales of Rajmahal Basin, Jharkhand, India

et al. 2021

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The proximate, low-pressure N 2 sorption, X-ray diffraction, and organic petrography parameters have been used to delineate the pore structures and fractal dimensions in the Barakar shales of Rajmahal Basin, India. The information has been utilized for the assessment of shale gas reservoir and to know about the mode of occurrence and storage capacity of shales for the entrapment of methane (CH 4 ). The studied shales are characterized by high fixed carbon contents (10.14-46.09 wt.%) and contain significant abundance of brittle minerals, like quartz (6.0-51.6%) and mica (1.0-41.2%). The petrographic observations show that the studied samples comprise of numerous laths of vitrinite (collotelinite and vitrodetrinite) and semifusinite macerals and quartz grains. The data of low-pressure N 2 sorption analysis indicates the shales encompass mainly meso-to macropores and microfractures. The total pore volume, average pore size, and multipoint BET surface area of the studied shales vary from 0.012 to 0.023 cc/g, 8.295 to 10.840 nm, and 5.752 to 10.390 m 2 /g respectively. Two types of fractal dimensions (D 1 and D 2 ) have been calculated by using FHH (Frankel-Halsey-Hill) method from the N 2 adsorption isotherm. The high values of fractal dimensions (2.1949 < D 1 < 2.4837 and 2.6668 < D 2 < 2.7247) are indicating the highly rugged pore surface or complexity in the pore structures.

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“…The dark argillite interbedded with dolomicrite in Unit II of the LXF in the study area is a configuration that is mainly present in the productive zones of Units II 5, II 3+4, and II 1+2 of the LXF. The correct nouns have TOC values that range from 0.5%-2% (average 1.29%), indicating medium to good source rock [28][29][30], with some samples constituting excellent source rock based on the fact that their TOC values are > 4% (Figure 4). In the overly-ing and underlying mudstones, however, the dolomites are poorly developed, with TOC values generally < 0.5% (Figure 4), which is indicative of poor source rock [31,32].…”

Section: Good Hydrocarbon-generation Potential In the Well-developed mentioning

confidence: 99%

Sedimentary facies of Paleogene lacustrine dolomicrite and implications for petroleum reservoirs in the southern Qianjiang Depression, China

et al. 2019

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Paleogene lacustrine dolomicrite of Unit II of the lower Xingouzui Formation in the southern part of the Qianjiang Depression, China forms “tight carbonate” hydrocarbon reservoirs that can be divided into the following four dolomicrite types: dolomicrite, muddy dolomicrite, sandy dolomicrite, and gypsiferous dolomicrite. These four dolomicrite types occur in the following three distinct combinations, which are referred to as subfacies: (1) interbedded dolomicrite (or sandy dolomicrite) and dark-gray siliciclastic mudstone, interpreted as open lacustrine deposits, (2) grayish-dark siliciclastic mudstone with thinly-bedded muddy dolomicrite or gypsiferous dolomicrite, interpreted as restricted lacustrine deposits, and (3) grayish-green mudstone with thinlybedded brown-yellow siltstone, interpreted as lacustrine shoreline deposits. The spatial distribution of these subfacies was controlled by the paleo-provenance system, paleo-microgeomorphology, and lake level fluctuations. In the open lacustrine subfacies, dolomicrite or sandy dolomicrite are often vertically interbedded with dark argillite rocks, forming a suitable petroleum source rockreservoir association. The dolomicrite and sandy dolomicrite reservoirs possess many secondary crystalline pores and few dissolution pores, with mesopore porosities in the range of 15%–25%. The dark mud shale interval has total organic carbon (TOC) values exceeding 4% (averaging 1.29%). The organic matter is mainly type II2, with vitrinite reflectance values averaging 0.57, which indicates potential for the generation of immature oil. The oil-source correlation results indicated that the n-alkanes of the crude oil and source rock samples from Unit II of the lower Xingouzui Formation exhibit single peak values, with a main peak (post-peak) in C22 and a Pr/Ph ratio $#x003C; 1 in a C2920R $#x003E; C2720R $#x003E; C2820R distribution. These features indicate that source-reservoir interbedding is characteristic of selfsourced reservoirs. The interbedded dolomicrite (or sandy dolomicrite) and dark-gray siliciclastic mudstone, i.e., subfacies (1), is a favorable target for hydrocarbons in the study area.

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Geochemical and petrophysical characteristics of Permian shale gas reservoirs of Raniganj Basin, West Bengal, India

Cited by 40 publications

References 77 publications

Measuring Energy Efficiency and Environmental Performance: A Case of South Asia

Measuring Energy Efficiency and Environmental Performance: A Case of South Asia

Pore structures and fractal dimensions in Early Permian Barakar shales of Rajmahal Basin, Jharkhand, India

Sedimentary facies of Paleogene lacustrine dolomicrite and implications for petroleum reservoirs in the southern Qianjiang Depression, China

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