CHARACTERIZATION OF RESIDUAL KEROGENS AND THE PORES IN SHALE ROCKS DURING THERMAL EVOLUTION
J. Xu, B. Cheng, Y. Zhang, X. Zhang, Z. Wei, O. Faboya, Z. Liao and S. Hu
Event name: 29th International Meeting on Organic Geochemistry
Session: Posters - Unconventionals
Publication date: 04 September 2019
Info: Extended abstract, PDF ( 544.21Kb )
In this work one low-mature shale sample was selected. A series of semi-closed pyrolysis experiments were carried out, to investigate the evolution characteristics of pores and organic matter in shale rocks. The results show that three forms of OM (organic matters) can be identified in shale rocks, and the evolutions of these OM are different from each other. Four types of pores can be identified. The secondary OM pore can be formed at 0.82%EasyRo, but there is no obvious correlation between the development of this kind of pores and shale rock maturity. The shrinkage OM pore could translate to interparticle mineral pore due to the OMinterm consumption at 1.45%EasyRo. The abundance of intraparticle pore gradually increased from 0.82%EasyRo to 2.66%EasyRo, maybe resulted from the enhancement of mineral dissolution in rocks with thermal maturity.