@article {29613,
	title = {Nanopore structure comparison between shale oil and shale gas: Examples from Bakken and Longmaxi Formations},
	journal = {Petroleum science},
	volume = {16},
	year = {2019},
	pages = {77-93},
	abstract = {In order to analyze and compare the differences in pore structures between shale gas and shale oil formations, a few samples from the Longmaxi and Bakken Formations were collected and studied using X-ray diffraction, LECO TOC measurement, gas adsorption and field-emission scanning electron microscope. The results show that samples from the Bakken Formation have a higher TOC than those from the Longmaxi Formation. The Longmaxi Formation has higher micropore volume and larger micropore surface area and exhibited a smaller average distribution of microsize pores compared to the Bakken Formation. Both formations have similar meso-macropore volume. The Longmaxi Formation has a much larger meso-macropore surface area, which is corresponding to a smaller average meso-macropore size. CO2\&nbsp;adsorption data processing shows that the pore size of the majority of the micropores in the samples from the Longmaxi Formation is less than 1\&nbsp;nm, while the pore size of the most of the micropores in the samples from the Bakken Formation is larger than 1\&nbsp;nm. Both formations have the same number of pore clusters in the 2{\textendash}20 nm range, but the Bakken Formation has two additional pore size groups with mean pore size diameters larger than 20\&nbsp;nm. Multifractal analysis of pore size distribution curves that was derived from gas adsorption indicates that the samples from the Longmaxi Formation have more significant micropore heterogeneity and less meso-macropore heterogeneity. Abundant micropores as well as meso-macropores exist in the organic matter in the Longmaxi Formation, while the organic matter of the Bakken Formation hosts mainly micropores.},
	author = {Liu K, Wang L, Ostadhassan M.}
}
