Geofluids

Research Article

Special Distribution of Crude Oil in the Lucaogou Formation in Jimusaer Sag and Genetic Analysis of Its Physical Difference

Table 2

Biomarker parameters of Lucaogou Formation crude oil in the Jimusaer Sag in Junggar Basin.


Well no.	Depth (m)	Stratum	1	2	3	4	5	6	7	8	9	10	11

Ji171	3074–3088	P₂l₂	1.00	0.97	1.06	0.57	1.26	1.25	0.59	0.74	0.43	0.33	0.43
Ji172	2920–2970	P₂l₂	0.89	0.75	0.87	0.63	1.32	1.31	0.27	0.85	0.46	0.26	0.39
Ji173	3088–3109	P₂l₂	1.10	0.96	0.93	0.75	1.34	1.34	0.39	0.76	0.46	0.25	0.37
Ji174	3116–3146	P₂l₂	0.79	0.72	0.91	0.57	1.26	1.25	0.29	0.81	0.38	0.29	0.41
Ji176	3028–3063	P₂l₂	0.83	0.75	1.01	0.54	1.25	1.24	0.35	0.76	0.41	0.32	0.41
Ji23	2309–2385	P₂l₂	0.95	0.71	0.40	1.54	1.33	1.29	0.50	0.80	0.44	0.20	0.24
Ji25	3403–3425	P₂l₂	0.79	0.72	0.89	0.55	1.23	1.23	0.33	0.83	0.40	0.31	0.44
Ji28	3198–3325	P₂l₂	1.24	1.06	1.19	0.53	1.32	1.33	0.39	0.85	0.60	0.27	0.42
Ji30	4018–4184	P₂l₂	0.84	0.82	1.61	0.35	1.17	1.16	0.33	0.59	0.23	0.46	0.46
Ji301	2762–776.5	P₂l₂	0.97	0.86	0.90	0.73	1.29	1.27	0.48	0.87	0.49	0.30	0.41
Ji302	2840–2845	P₂l₂	0.89	0.71	0.92	0.70	1.30	1.30	0.27	0.75	0.37	0.26	0.39
Ji302	2853–2870	P₂l₂	0.89	0.73	0.86	0.64	1.30	1.29	0.29	0.87	0.47	0.26	0.38
Ji303	2598–2604	P₂l₂	1.11	0.90	0.69	0.90	1.34	1.31	0.47	0.83	0.51	0.26	0.38
Ji37	2830–2849	P₂l₂	1.01	0.87	0.81	0.58	1.28	1.27	0.39	0.76	0.54	0.28	0.38
Ji174	3255–3314	P₂l₁	2.04	2.42	1.41	0.46	1.28	1.27	1.86	0.65	0.22	0.26	0.40
Ji305	3565–3588	P₂l₁	1.48	1.64	1.21	0.52	1.25	1.23	1.49	0.69	0.23	0.30	0.44
Ji31	2875–2945	P₂l₁	2.38	3.17	1.22	0.42	1.28	1.27	1.82	0.70	0.28	0.22	0.36
Ji33	3664–3717	P₂l₁	1.37	1.49	1.62	0.37	1.23	1.22	0.88	0.68	0.29	0.34	0.45
Ji36	4209–4255	P₂l₁	1.44	1.54	1.15	0.47	1.25	1.23	0.66	0.65	0.27	0.35	0.44
Ji39	3982–3987	P₂l₁	1.16	1.15	1.20	0.42	1.18	1.19	0.68	0.64	0.25	0.41	0.45
Ji40	3579–3626	P₂l₁	1.52	1.71	1.10	0.40	1.22	1.22	1.37

Notes: 1: ; 2: Ph/n-C₁₈; 3: C₂₁-/C₂₂+; 4: TAR; 5: OEP; 6: CPI; 7: β-carrotane/n-C₂₁; 8: (ααα-20R C₂₈/C₂₉ sterane; 9: ααα-20R C₂₇/C₂₉ sterane; 10: αββ/() C₂₉ sterane; 11: C₂₉ααα20S/(). TAR: terrigenous/aquatic ; CPI: carbon preference index of , after Bray and Evans (1961); OEP: odd-even predominance of , after Scalan and Smith (1970).