Measurement of the flow properties of coals for in-situ gasification. Progress report, July 1978--September 1978. [As a function of water saturation and orientation]

Reznik, A.A.; Fulton, P.F.; Lien, C.L.

doi:10.2172/6574710

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“…The reduction of brown coal permeability with moisture content (refer to Fig. 8a) has been shown by Reznik et al (1978). The effects of coal rank and vitrinite content on coal mass permeability for high rank coal have been explained by Clarkson and Bustin (1997) and Wang (2007).…”

Section: Gas Typementioning

confidence: 88%

“…Especially for low rank coals, only few studies can be found (Gibson et al 2006;Viete and Ranjith 2006;Reznik et al 1978;Petukhov et al 1972). In case of Victorian brown coal, although many studies have been conducted for water permeability (Trollope et al 1965), very few studies can be found related to the effects of CO 2 on permeability variation.…”

Section: Permeability Of Coalmentioning

confidence: 99%

“…(d) (c) Fig. 8 Effects of a moisture content (Reznik et al 1978), b coal rank (Robertson 2005;Wang 2007), c vitrinite content (Wang 2007), and d dry ash content (Robertson 2005;Wang 2007) on the coal gas permeability of high and low rank coals Environ Earth Sci (2011) 64:223-235 229 Factors affecting gas sorption in the coal mass…”

Section: Gas Adsorption and Desorptionmentioning

confidence: 99%

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A review of coal properties pertinent to carbon dioxide sequestration in coal seams: with special reference to Victorian brown coals

et al. 2010

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This paper presents reviews of studies on properties of coal pertinent to carbon dioxide (CO 2 ) sequestration in coal with specific reference to Victorian brown coals. The coal basins in Victoria, Australia have been identified as one of the largest brown coal resources in the world and so far few studies have been conducted on CO 2 sequestration in this particular type of coals. The feasibility of CO 2 sequestration depends on three main factors: (1) coal mass properties (chemical, physical and microscopic properties), (2) seam permeability, and (3) gas sorption properties of the coal. Firstly, the coal mass properties of Victorian brown coal are presented, and then the general variations of the coal mass properties with rank, for all types of coal, are discussed. Subsequently, coal gas permeability and gas sorption are considered, and the physical factors which affect them are examined. In addition, existing models for coal gas permeability and gas sorption in coal are reviewed and the possibilities of further development of these models are discussed. According to the previous studies, coal mass properties and permeability and gas sorption characteristics of coals are different for different ranks: lignite to medium volatile bituminous coals and medium volatile bituminous to anthracite coals. This is important for the development of mathematical models for gas permeability and sorption behavior. Furthermore, the models have to take into account volume effect which can be significant under high pressure and temperature conditions. Also, the viscosity and density of supercritical CO 2 close to the critical point can undergo large and rapid changes. To date, few studies have been conducted on CO 2 sequestration in Victorian brown coal, and for all types of coal, very few studies have been conducted on CO 2 sequestration under high pressure and temperature conditions.

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Section: Gas Typementioning

confidence: 88%

Section: Permeability Of Coalmentioning

confidence: 99%

Section: Gas Adsorption and Desorptionmentioning

confidence: 99%

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