Early Paleozoic Extension-Compression Transition and Formation of a Paleo-Oil Reservoir System in the NW Sichuan Basin: Implications for Deeply Buried Hydrocarbon Accumulation

Table 2

Biomarker parameters of source rock and paleo-oil reservoir.

Biomarker parameters	Source rock				Paleo-oil reservoir
	Є1m+q		P2d	T1f^1	Zn2dn^4	Є1c		D1p	P2q	P2m	T1f	J2s
	CS1-8140	QP-6	GY-S-8	CJG-11	YB-1	TB-8	NZB-4	TJS-1	CJG-12	GY-7	CJG-10	QLK-1	HB-01
TT23/tT24	2.74	/	1.1	2.57	3.37	2.68	2.78	2.73	2.48	3.46	1.9	3.70	3.32
TT23/H30	0.7	0.67	0.28	1.25	0.29	1.96	2.4	1.8	0.14	0.17	0.39	1.53	1.8
H29/H30	0.78	0.74	0.91	1.49	0.79	1.78	1.42	1.45	0.88	0.71	0.75	1.39	1.17
	0.5	0.5	0.17	0.29	0.12	0.27	0.23	0.27	0.33	0.41	0.31	0.49	0.48
	0.4	0.42	0.44	0.48	0.46	0.44	0.46	0.46	0.46	0.47	0.37	0.49	0.46
	0.37	0.36	0.52	0.51	0.27–0.44	0.58	0.58	0.56	0.56	0.57	0.3	0.59	0.6
S21/S22	3.75	2.28	1.19	2.46	2.77	2.62	1.99	2.08	2.34	2.49	2.37	2.39	2.63
	0.43	0.12	0.33	0.36	0.19	0.96	0.35	0.42	0.13	0.19	0.1	0.33	0.44
	37	38	39	23	27	29	24	23	29	23	28	28	27
	31	32	31	25	31	30	27	23	23	21	32	22	22
	32	30	30	52	42	44	49	54	48	56	40	50	51