Organic-induced nanoscale pore structure and adsorption capacity variability during artificial thermal maturation: Pyrolysis study of the Mesoproterozoic Xiamaling marine shale from Zhangjiakou, Hebei, China

Pore Structure of Organic Matter in the Lacustrine Shale from High to Over Mature Stages: An Approach of Artificial Thermal Simulation

“…Conversely, OM-hosted nanopores increasingly developed until 3.5% Ro in an open simulation system without lithostatic pressure. 41 , 56 …”

Does grain size influence hydrocarbons generation and mesoporosity during artificial thermal maturation of an organic-rich mudstone?

“…Cavelan et al, 2020bCavelan et al, , 2020cCavelan et al, , 2019aGafurova et al, 2021;Guo et al, 2017;Ko et al, 2018Ko et al, , 2016Song et al, 2020;T. Wang et al, 2021;Wang et al, 2020;Wu et al, 2018;Xu et al, 2021;Yang et al, 2018). Many of these papers compare their results with each other although they often used different thermal maturation systems and sample rock fabrics.…”

“…Wang et al, 2021;Y. Wang et al, 2021;Xu et al, 2021), we can suppose that the use of different rock particle sizes during artificial maturation may affect the thermal degradation of the OM, leading to different OM-hosted pore development. Indeed, Song et al (2021) Recent computation works for estimating the gas storage capacity of kerogen in shales are based on porosity parameters and in particular on Langmuir isotherms and Langmuir volumes which depend on the kerogen composition but also the porosity formed during maturation (Alafnan, 2021;Alafnan et al, 2020;Ambrose et al, 2012;He et al, 2019;Memon et al, 2020;Ungerer et al, 2015).…”

“…Wang et al, 2021;Y. Wang et al, 2021;Xu et al, 2021). Initially used to calculate kinetic parameters, assess variations of the kerogen structure, mass balance, or quantify oil generation potential, this method significantly improved our knowledge about oil and gas generation mechanisms and hydrocarbon expulsion processes (Behar et al, 2010(Behar et al, , 2008(Behar et al, , 2003(Behar et al, , 1997(Behar et al, , 1992Behar and Vandenbroucke, 1986;Hou et al, 2021;Landais et al, 1994;Lewan, 1997;Michels et al, 1994;Monthioux et al, 1985) and their relation with the formation of pores and the storage capacity of shale reservoirs (Cavelan et al, 2019a; J o u r n a l P r e -p r o o f 3 Chen and Xiao, 2014;Guo et al, 2017;Han et al, 2019;Ko et al, 2018;Song et al, 2020Song et al, , 2021T.…”

“…Wang et al, 2021;Y. Wang et al, 2021;Xu et al, 2021). Today several conventional and MBE (material balance equation) models used to estimate the gas sorption capacity of kerogen at different thermal maturity are still partly based on the knowledge acquired during these experiments (Alafnan, 2021;Alafnan et al, 2020;Ambrose et al, 2012;Ungerer et al, 2015).…”