1887

Abstract

Shale gas is generally believed to have been stored in forms of free compressed gas in open pores and cracks, as adsorbed gas on the surfaces of kerogen or clay minerals and as diffused gas stored within the solid organic matter (Bowker, 2007, Sondergeld et al., 2010). The nano-pores1, which have a great effect on the shale gas occurrences, are the predominant pore type in the Barnett mudstones (Loucks et al., 2009). Therefore, it is important to understand the pore network and shale gas storage mechanism. This study aims to reveal the key affecting factors of pore development, and establish a shale gas prospect evaluation model as a function of pressure and temperature of overmature shale. A set of outcrop and downhole samples were selected from the Sichuan marine basin and the Bohai bay lacustrine basin of China, and an immature shale outcrop sample from the Fushun Basin, northeastern China was used for pyrolysis experiment. A series of nano-pore description methods, such as FESEM, CO2 low pressure isotherm analysis (D-R method), N2 low pressure isotherm analysis (BET theory), Hg porosimetry were used to observe pore size, morphology, and abundance in gas shale. Methane adsorption capacity was measured use the isotherm adsorption system from TerraTek.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609-pdb.350.iptc16774
2013-03-26
2024-03-29
Loading full text...

Full text loading...

http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609-pdb.350.iptc16774
Loading
This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error