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. 2020 Jun 4;5(23):14013–14029. doi: 10.1021/acsomega.0c01432

Table 1. TOC, HI, Measured (Rm) and Calculated (Rc) Vitrinite Reflectance, TR, Cc, Calculated OMp, Total Pore Volume (Vtot) and Corresponding Porosity (P) Accessible to Nitrogen Measurements, Relative Contribution of Macro- (>50 nm), Meso- (2–50 nm), and Micropores Volume (<2 nm) (Pore Size Definition after Sing57) of Naturally Matured Rocks (VK1 and VMF) and Artificially Matured Mudstones at Different Maturation Temperatures (Calculated from the BJH Cumulative Pore Volume at 2 and 50 nm in Diameter, Respectively)a.

sample name   TOC (wt %) HI (mg/g TOC) Rm (%) Dev N Rc (%) Dev TR (%) Cc (%) OMp (%) Vtot (cm3/g) Vmacro (%) Vmeso (%) Vmicro (%) P (%)
VK1   2.2 292 0.85 0.08 70 0.76 0.04       3.2 × 10–2 21.2 71.2 7.6 6.0
VMF1   5 43 1.65 0.05 50           3.5 × 10–2 28 72 0 6.5
VMF2   6.7 19 1.69 0.1 50           3.5 × 10–2 33.5 66.5 0 6.5
M2 raw 3.0 413 0.42 0.03 50 0.47 0.03       3.6 × 10–2 22 74.3 3.7 6.7
M23   5.6 546 0.4 0.04 50 0.45 0.04       3.7 × 10–2 18 78 4 6.9
E38   14.8 584 0.43 0.03 52 0.48 0.02       2.8 × 10–2 24 72.6 3.4 5.2
E40   15.4 619       0.51 0.04       3.2 × 10–2 34 63.2 2.8 6.0
M2 325 °C 2.9 314       0.72 0.08 27 34 0.6 1.4 × 10–2 42 58 0 2.6
M23   5.2 471 0.66 0.04 50 0.71 0.06 20 50 1.3 1.8 × 10–2 46 54 0 3.4
E38   14.2 556       0.70 0.03 9 61 1.8 4.9 × 10–3 8 92 0 0.9
E40   15.2 553       0.68 0.09 12 66 2.8 5.2 × 10–3 65 35 0 1.0
M2 350 °C 2.6 296       0.79 0.07 38 34 0.9 2.7 × 10–3 0.3 80.7 19.3 0.5
M23   4.3 451       0.87 0.09 37 50 2.4 5.2 × 10–4 0 84.1 15.9 0.1
E38   14.6 519       0.84 0.08 12 61 2.6 4.6 × 10–3 0 80.8 19.2 0.9
E40   14.8 514       0.85 0.11 20 66 4.8 4.3 × 10–3 0.4 77.4 22.2 0.8
M2 390 °C 2.2 91       1.22 0.06 84 34 2.0 1.7 × 10–2 51 49 0 3.2
M23   3.0 187 1.4 0.08 52 1.27 0.02 82 50 5.4 1.8 × 10–2 59.1 40.9 0 3.4
E38   13.0 155       1.20 0.03 77 61 16.1 3.4 × 10–2 0 98 2.3 6.4
E40   13.9 189       1.22 0.07 72 66 17.1 4.6 × 10–2 0 79.1 20.9 8.6
M2 440 °C 2.3 13       1.61 0.18 98 34 2.3 1.2 × 10–2 0 86.1 13.9 2.2
M23   2.9 21       1.58 0.15 98 50 6.4 1.7 × 10–2 0 86.4 13.6 3.2
E38   11.2 23       1.88 0.29 97 61 20.4 1.3 × 10–2 0 82.2 17.8 2.4
E40   11.4 50       1.72 0.24 94 66 22.2 4.8 × 10–3 0 78.3 21.7 0.9
M2 470 °C 2.0 10       2.50 0.16 98 34 2.3 5.3 × 10–2 33 67 0 9.9
M23   2.8 7 2.02 0.1 50 2.50 0.18 99 50 6.5 9.2 × 10–2 42 58 0 17.2
E38   5.9 22       2.50 0.20 98 61 20.7 3.3 × 10–2 15.7 83.2 1.1 6.2
E40   5.4 28       2.45 0.11 98 66 23.3 6.0 × 10–2 13.2 84.7 2.1 11.2
a

N: number of measured vitrinite reflectance values. SAT + ARO concentrations are positively correlated with the initial content of orange AOM after heating at 350 °C (R2 ≥ 0.97, Figure 4A).