Table 1 Gross geochemical parameters of whole rock and kerogen samples.

From: Isothermal confined pyrolysis on source rock and kerogens in the presence and absence of water: Implication in isotopic rollover in shale gases

 

Depth (m)

Strata

TOC %

%Ro

S1

S2

PI

HI

Tmax

C (%)

H (%)

O (%)

N (%)

δ13C (‰ PDB)

Lucaogou

2319.1

P2l

10.40

0.60

2.25

89.07

0.025

856

445

77.65

12.16

4.24

1.67

−28.71

Saergan

outcrop

O2-3

1.81

1.10–1.30

0.55

2.87

0.161

159

457

47.28

3.84

14.41

0.30

−30.10

Wuerhe

4660.6

P2w

3.37

1.18

0.41

18.52

0.02

550

450

56.04

7.93

3.70

0.67

−28.57

Fengcheng

3474.9

P1f

3.01

0.96

0.69

22.32

0.03

741

430

35.81

5.77

3.96

0.74

−27.12

  1. TOC and Rock-Eval data were obtained from rock powder for all four samples. Rock-Eval parameters S1 and S2: in “mg HC/g rock”;
  2. PI = S1/(S1 + S2); HI = S2/TOC, in “mg HC/g TOC”; Tmax: in “°C”; C (%), H (%), O (%), N (%) and δ13C (‰ PDB) were measured on kerogen
  3. while the other data were measured on whole source rock.
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