Shale | F | F(Ox) | F | F | F | F | NA | B |
|---|
Depth (m)
| 1552 | 1552 | 1578 | 1578* | 1578* | 1582 | 1025 | 6300 |
Yield
| 827 | 230 | 57 | 13 | 10 | 230 | 102 | 0 |
CH
4
| 31 | 10 | 13 | 0 | 0 | 11 | 0 | 0 |
C
2
H
6
| 29 | 32 | 34 | 23 | 11 | 30 | 27 | 0 |
C
3
H
8
| 21 | 30 | 27 | 32 | 29 | 29 | 34 | 0 |
i
-C
4
H
10
| 3.1 | 3.5 | 3.6 | 5.0 | 8.9 | 3.2 | 3.0 | 0 |
n
-C
4
H
10
| 9.2 | 13 | 12 | 19 | 23 | 14 | 18 | 0 |
i
-C
5
H
12
| 3.1 | 4.3 | 4.1 | 8.3 | 12 | 3.9 | 4.4 | 0 |
n
-C
5
H
12
| 3.4 | 7.4 | 6.4 | 14 | 17 | 9.2 | 14 | 0 |
TOC
| 5.8 | 5.8 | 4.4 | 3.9 | 3.9 | 4.4 | 10.2 | 9.4 |
S1
| 2.1 | 2.1 | 2.3 | 1.5 | 1.5 | 1.6 | 3.4 | 7.5 |
S2
| 10.8 | 10.8 | 10.5 | 8.8 | 8.8 | 8.72 | 32.5 | 61.1 |
S3
| 0.46 | 0.46 | 0.39 | 0.35 | 0.35 | 0.29 | 0.29 | 2.45 |
Tmax
| 449 | 449 | 450 | 449 | 449 | 448 | 445 | 434 |
- Yield in μg (C1–C5)/g rock was calculated by integration (calibrated by C1–C5 standard mixture). Gas compositions are % vol. TOC is total organic carbon as %; S1 = free hydrocarbons distilled from the rock (300°C) in mg/g rock; S2 = cracked hydrocarbons (350 – 550°C) in mg/g rock; S3 = carboxyl decomposition products (300 – 390°C) in mg CO2/g rock; Tmax is the temperature (°C) of the S2 peak. The Floyd shale (F) is described in Fig. 1. The New Albany shale (NA) (Dev/L Miss., Illinois Basin) is side wall core from a well in Union County, Kentucky (API = 16225974700000; +37.565, -88.076; 1025 m). The Bakken shale (B) is U Dev/L Miss whole core from a well in Stark County, North Dakota (API = 33089004240000; +46.887; -102.882; 6300 m) in the Williston Basin. F(Ox) represents Floyd shale under Oxic Conditions in Fig. 2. The reactions with New Albany, Bakken, and Floyd shale at 1582 m are duplicates of that in Fig. 2, and the reaction with Floyd shale at 1578 m is shown in Fig. 3 (80 min., 50°C). Samples were between 1 and 2 gm with particle sizes (before grinding) generally between 2 and 5 mm except for the duplicate Floyd experiments (1578*) (80 min., 50°C) which used aliquots of a mixture of particle sizes under 2 to 5 mm. The Bakken core had been in storage 15 years, the Floyd cuttings in storage over 3 years, and the New Albany shale in storage 3 years.
