The Oil-Bearing Strata of Permian Deposits of the Ashal’cha Oil Field Depending on the Content, Composition, and Thermal Effects of Organic Matter Oxidation in the Rocks

Table 3

Geochemical indicators of saturated fractions of extracts from rocks of the Permian deposits of the Ashal’cha oil field.

Sample no.	Geochemical indicators
	Pr/Ph	Pr/nС17	Ph/nС18	С27/С17	n-(С27-С31)/n-(С15-С19)		CPI
Well 24, depth 117.5-132 m
1	0.74	8.71	16.67	0.47	0.24	1.53	0.99	12.00
2	0.76	8.72	14.71	0.56	0.19	1.39	0.96	11.34
3	0.78	6.46	9.04	0.58	0.28	1.73	1.02	7.70
Well 9, depth 141.6-154.9 m
4	0.77	3.92	6.38	0.43	0.41	1.43	1.07	5.01
5	0.69	7.10	17.00	0.30	0.50	1.80	1.18	10.81
6	0.69	9.12	19.00	0.62	0.62	1.40	1.15	13.14
Well 106, depth 174.4-186.6 m
7	0.75	0.36	0.42	1.26	0.99	1.08	0.99	0.39
8	0.53	0.22	0.34	2.34	2.31	1.01	0.98	0.29
Well 107, depth 176.5-187 m
9	0.60	0.22	0.35	0.94	0.74	1.03	1.02	0.29
10	0.66	0.36	0.50	0.40	0.39	1.29	0.96	0.43
11	0.68	0.62	1.03	0.24	0.25	1.26	1.07	0.81