Research Article

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 1

The data of the study of rock samples by the method of thermal analysis.

ObjectMass loss of the rock samples (wt %)
20–200°С200–400°С400–600°С600–800°С800–1000°С∑ ОMF

(1) Berezovskaya area
Semiluki-Mendym (Domanic) sediments, depth 1712.5–1718 m
Initial sample0.9610.0525.4311.320.4535.480.39
After extraction0.769.3324.9912.940.3634.320.37
After thermal treatment1.028.3416.3513.360.1324.690.73
After extraction0.468.3110.5812.580.3818.890.79

(2) Zelenogorskaya area
Dankov-Lebedyan (carbonate) deposits, depth 1379–1385.5 m
Initial sample0.310.630.4243.130.121.051.50
After thermal treatment0.240.380.3443.470.200.721.12
After extraction00043.130.2300

FОM = ∆m1 (200–400°С)/∆m2 (400–600°С)