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^−	VO^2+	Mn^2+
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	0	0	520.8	145.57	77.85	441.7	844.8