Influence of Hydrothermal and Pyrolysis Processes on the Transformation of Organic Matter of Dense Low-Permeability Rocks from Domanic Formations of the Romashkino Oil Field
Table 5
EPR-analysis of samples of Domanic rocks before and after pyrolytic experiments.
Object
The content of paramagnetic centers (u.e.)
Free hydrocarbon radicals
Inorganic ions
23°С
350°С
600 °С
SO2−
SO3−
VO2+
Mn2+
Berezovskaya area Semiluki-Mendym (Domanic) sediments, depth 1712.5–1718 m
Initial sample
613.2
5860.9
437.3
322.2
472.4
720.9
2375.2
The sample after extraction
512.9
5676.5
356.3
—
—
402.8
2137.5
The sample after hydrothermal treatment in autoclave T 350°С
1057.2
2690.7
412.6
295.2
916.0
979.6
2708.6
Zelenogorskaya area Dankov-Lebedyan (carbonate) deposits, depth 1379–1385.5 m
Initial sample
0
17.3
287.6
94.6
50.27
141.7
2082.2
The sample after extraction
70.2
135.7
250.7
66.37
28.0
0
2112.7
The sample after hydrothermal treatment in autoclave T 350°С