Geofluids

Research Article

Biomarkers and C and S Isotopes of the Permian to Triassic Solid Bitumen and Its Potential Source Rocks in NE Sichuan Basin

Table 4

Biomarker parameters of solid bitumen from the NE Sichuan Basin.


	Sample number	Strata	Pr/Ph	Pr/nC₁₇	Ph/nC₁₈	Gm/C₃₀H	C₂₇ 20R%	C₂₈ 20R%	C₂₉ 20R%	C₂₄Te/C₂₆TT	C₂₃TT/C₃₀H	C₂₁TT/C₂₃TT	C₂₉S/(S + R)	C₂₉H/C₃₀H	C₃₅H/C₃₄H	Ts/(Ts + Tm)

Bitumen-W	YB101	T₁f	0.55	0.52	0.81	0.22	34.35	29.83	35.43	0.57	0.23	0.63	0.54	0.54	0.63	0.48	0.75	0.26
Bitumen-W	LG11-0921	P₃ch	0.88	0.48	0.65	0.11	34.05	31.97	33.99	0.32	0.27	0.33	0.58	0.61	1.69	0.54	0.64	0.25
Bitumen-W	LG82-10-12	P₃ch	0.85	0.67	0.80	0.10	35.84	31.85	32.30	0.34	0.25	0.78	0.54	0.56	0.00	0.52	0.72	0.27
Bitumen-E	YA1	P₃ch	0.41	0.49	0.76	0.30	33.32	31.24	35.43	0.57	0.14	0.57	0.53	0.51	0.57	0.47	0.80	0.28
Bitumen-E	TS5	P₃ch	0.31	0.35	0.71	0.16	34.59	29.00	36.41	0.59	0.21	0.59	0.52	0.52	0.74	0.48	0.69	0.26
Bitumen-E	TD10-1	P₃ch	0.42	0.34	0.62	0.22	30.54	31.75	37.71	0.55	0.14	0.57	0.52	0.50	0.59	0.47	0.79	0.26
Bitumen-E	PG6–3	P₃ch	0.48	0.72	1.30	0.17	30.89	30.48	38.64	0.47	0.33	0.80	0.58	0.48	0.00	0.57	0.46	0.32
Bitumen-E	PG5 4889.3	T₁f	0.45	0.66	1.21	0.17	37.38	26.70	35.92	0.50	0.36	0.72	0.58	0.52	0.26	0.53	0.69	0.29
Bitumen-E	Po2	T₁f	0.65	0.44	0.68	0.17	34.65	26.54	38.80	0.48	0.43	1.11	0.54	0.50	0.37	0.58	0.49	0.31
Bitumen-E	LJ2	T₁f	0.64	0.37	0.62	0.19	28.71	29.28	42.01	0.53	0.22	1.03	0.56	0.49	1.70	0.59	0.48	0.31
Bitumen-E	Du4	T₁f	0.54	0.25	0.49	0.22	31.09	29.14	39.77	0.50	0.31	0.98	0.59	0.51	1.55	0.59	0.43	0.30
Bitumen-E	HL5-4	P₃ch	0.96	0.73	1.08	0.22	30.72	34.01	35.27	0.79	1.29	0.75	0.51	0.54	1.77	0.49	0.82	0.26
Bitumen-E	TD10-10	P₃ch	0.56	0.25	0.43	0.27	32.49	31.09	36.43	0.44	0.19	0.39	0.50	0.38	1.15	0.50	0.54	0.27
Bitumen-E	PL-37	P₃ch	0.43	0.44	0.64	0.36	29.62	29.62	40.44	0.41	0.17	0.87	0.51	0.51	0.69	0.55	0.35	0.29
Bitumen-E	PL-58	P₃ch	0.38	0.22	0.55	0.31	28.60	30.49	40.91	0.54	0.18	0.79	0.53	0.72	0.86	0.36	0.31	0.21
Bitumen-E	MB2	P₃ch	—	—	—	0.30	28.54	23.52	47.95	0.79	0.23	0.93	0.27	0.49	0.87	0.27	1.21	0.27
Bitumen-E	MB2	P₃ch	—	—	—	0.28	31.22	29.94	38.84	0.55	0.09	0.55	0.46	0.48	0.70	0.43	1.08	0.27
Bitumen-E	PG3	T₁f	—	—	—	0.29	35.46	30.41	34.13	0.49	0.16	0.67	0.45	0.49	0.78	0.40	0.56	0.27
Bitumen-E	PG2-1	T₁f	—	—	—	0.26	34.68	27.77	37.55	0.48	0.40	0.76	0.52	0.57	0.87	0.51	0.71	0.26
Bitumen-E	PG2-3	T₁f	—	—	—	0.30	34.75	27.47	37.77	0.50	0.21	0.82	0.47	0.54	1.62	0.51	0.66	0.25

Note. Bitumen-E and Bitumen-W represent solid bitumen samples from the east and west to the PG gas field, respectively. 30.72 34.01 35.27.