Fig. 2
Some typical gas chromatograms of free hydrocarbons (S1) from Gulong pressure-preserved shale cores (a, c) compared to those of conventional shale cores that were not pressure-preserved (b, d).
Fig. 2 | Scientific Reports
Some typical gas chromatograms of free hydrocarbons (S1) from Gulong pressure-preserved shale cores (a, c) compared to those of conventional shale cores that were not pressure-preserved (b, d).
