Effect of reservoir characteristics on the productivity and production forecasting of the Montney shale gas in Canada

Kım, Garam; Lee, Deokjung; Chen, Zhuoheng; Athichanagorn, Suwat; Shin, Hyundon

doi:10.1016/j.petrol.2019.106276

Cited by 18 publications

(5 citation statements)

References 5 publications

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“…With the deepening of exploration and development, shale gas reservoirs have gradually attracted the attention of scholars from all over the world (Kim et al, 2019;Owusu et al, 2019;Zhao et al, 2019). Gas content is one of the important parameters for evaluating shale gas reservoirs (Wang and Guo, 2019).…”

Section: Introductionmentioning

confidence: 99%

An improved method for improving the calculation accuracy of marine low-resistance shale reservoir parameters

Zhang²

2022

Front. Earth Sci.

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In order to accurately evaluate the shale reservoir of the Lower Carboniferous Luzhai Formation in the central Guangxi area, in view of the influence of the low resistivity of the reservoir and the complex mineral composition on the logging response, taking Well A1 as an example, a method to improve the calculation accuracy of reservoir parameters is studied. The reasons for the low resistance in the study area are analyzed from the aspects of minerals, geochemistry and geology. An improved △log R method based on borehole correction and natural gamma spectroscopy logging was proposed to calculate the total organic carbon content. A calcium-corrected HERRON method is proposed to calculate porosity. The P/S time difference ratio-density neutron log overlap difference is proposed to calculate saturation. Calculation of adsorbed gas content based on organic matter correction. The results show that the improved method greatly improves the prediction accuracy, and has high consistency with the core analysis results, and can accurately evaluate the shale reservoirs of the Lower Carboniferous Luzhai Formation in the central area of Guangxi. The improved new method has good applicability and can be further used in the evaluation of this kind of source rock reservoir.

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Section: Introductionmentioning

confidence: 99%

An improved method for improving the calculation accuracy of marine low-resistance shale reservoir parameters

Zhang²

2022

Front. Earth Sci.

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“…In the present study, pure clay mineral samples including kaolinite, illite, montmorillonite, and illite−smectite mixed layer (I/S), which are the most prevalent in engineered and natural clay barriers 25 and also the most common clay minerals in shale reservoirs, are chosen as the study objects. The aims of this study are: (1) to investigate the pore characteristics of different clay minerals, with special emphasis on micropores (d < 2 nm), and (2) to reveal the effect of crystalline structure of different clay minerals on their pore structures and, in turn, on the methane adsorption capacity.…”

Section: Introductionmentioning

confidence: 99%

“…Shale gas has gained an increasing attention owing to its clean-burning characteristic and abundant reserve around the world. Shale gas is an unconventional gas trapped in extremely low-permeability shale formations, which are considered as both the source and the reservoir of hydrocarbons. − Shale contains a large number of nanometer-scale pores, in which the storage and transport of gas are significantly different from those in macroscale pores of conventional reservoirs due to the confinement effect at nanoscale . Shale gas may occur as free gas in natural fractures and intergranular pores, as adsorbed gas on organics and clays, or as dissolved gas in kerogen, oil, and water. , Among them, the adsorbed gas accounts for 20–85% of the total gas .…”

Section: Introductionmentioning

confidence: 99%

Pore Characterization of Different Clay Minerals and Its Impact on Methane Adsorption Capacity

et al. 2020

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Clay minerals contain a massive amount of nanopores and play a significant role in gas adsorption in shale. Although the pore structure of clay minerals has been widely studied, the characteristic of pores with diameter < 1 nm remains unclear. To investigate the pore characteristics of different clay minerals, especially for micropores, and to reveal the effect of pore structure on the methane adsorption capacity, the isotherm types, pore size distribution, pore volume, and surface area, as well as the CH 4 adsorption capacity of pure clay mineral samples, including kaolinite, montmorillonite, illite, and illite−smectite mixed layer (I/S), were investigated based on low-pressure N 2 and CO 2 adsorption and CH 4 adsorption isotherm measurements. The results show that the isotherm types of the studied clay minerals based on N 2 adsorption are all type IV, characterized by the presence of hysteresis loops. According to the features of hysteresis loops, it can be inferred that kaolinite mainly has cylindrical pores and slit-shaped pores, while pores in montmorillonite, illite, and I/S are dominated by inkbottle-shaped pores, with a small amount of slit-shaped pores. The studied clay minerals all display pore width peaks around 0.56−0.66 nm and 0.82−0.87 nm. Pores with diameters < 1 nm in kaolinite, illite, and I/S are all interparticle pores. Montmorillonite has microporous interlayer pores in addition to the interparticle pores, leading to its relatively large micropore volume and surface area. The CH 4 sorption capacity on different clay minerals is mainly influenced by the surface area, and montmorillonite has the highest CH 4 adsorption capacity.

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“…With their continuous exploration and development, shale gas reservoirs have been the subject of increasing attention (Dong et al, 2016;He et al, 2017;Kim et al, 2019;Owusu et al, 2019), particularly as they currently represent fields of new reserves, especially for countries such as China that already host large conventional reservoirs. Accordingly, many countries, including China, the United States, Mexico, Argentina, South Africa, Australia, Canada, Poland, and France, have begun to explore and develop shale gas reservoirs (Yin et al, 2016;Morga and Kamińska, 2018;Jiang et al, 2019a), and hence, research on shale gas reservoirs is incredibly extensive.…”

Section: Introductionmentioning

confidence: 99%

High-precision calculation of gas saturation in organic shale pores using an intelligent fusion algorithm and a multi-mineral model

Zhu

Zhang

et al. 2020

Adv. Geo-Energy Res.

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Effect of reservoir characteristics on the productivity and production forecasting of the Montney shale gas in Canada

Cited by 18 publications

References 5 publications

An improved method for improving the calculation accuracy of marine low-resistance shale reservoir parameters

An improved method for improving the calculation accuracy of marine low-resistance shale reservoir parameters

Pore Characterization of Different Clay Minerals and Its Impact on Methane Adsorption Capacity

High-precision calculation of gas saturation in organic shale pores using an intelligent fusion algorithm and a multi-mineral model

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