Characteristics and Formation Mechanisms for the Saline Lacustrine Oil in the West Slope of the Dongpu Sag

doi:10.19657/j.geoscience.1000-8527.2018.06.01

Abstract

Abstract:

The hydrocarbons generation and migration style in the West Slope of the Dongpu Sag is rather complex. Geochemical methods including GC/MS, ESI FT-ICR MS and isotopic analysis, combined with geological methods are used to reveal hydrocarbon characteristics and genetic mechanisms for the saline lacustrine oils. The crude oils analyzed were subdivided into two oil families. Oil family-I is these oils in the Mazhai Tectonic Belt, which were characterized by relatively low ratios of Pr/Ph (mean 0.39) and C₂₉-/C₃₀-hopane (mean 0.33), and relatively high ratios of C₃₅-/C₃₄-hopane (mean 1.56) as well as dibenzothiophene/phenanthrene (mean 0.27). This family was primarily derived from the Es₃^L-Es₄^U mudstones/shales deposited under strong reduction and saline-water paleoenvironment in the Mazhai Sag. Oil family-Ⅱ is those oils in the Huqing-Xingzhuang area, featured by characteristics of a little different from the family-I, which has a relatively low ratio of C₃₅-/C₃₄-hopane and dibenzothiophene/phenanthrene relative to the oil family-I. The oils of family-Ⅱ are primarily derived from the Es₃^L-Es₄^U mudstones/shales in the Huqing Tectonic Belt and the adjacent Haitongqi Subsag with a burial depth >3,000 m according to oil-source rock correlation. It is the precursors and paleoenvironment which caused the differences between the oils. Abundant sulfur compounds with relatively low thermal stability were detected in the deep oils analyzed by ESI FT-ICR MS, accompanied by relatively high sulfur isotope of individual sulfur compounds. Both of the phenomenon suggest thermochemical sulfate reduction (TSR) experienced by the oils. Two thermal evolution trends were observed for the source rocks in the area suggesting affection of thick gypsum-salt rocks on the hydrocarbons generation of the source rocks. Most of the crude oils in the Huqing area are less mature, which is not coincided with the considerable amounts of deep source rocks developed in the area, suggesting a good potential of deep tight oil-gas exploration and exploitation in the area.

Key words: Dongpu Sag, the West Slope, saline lacustrine oil, biomarker, oil genetic type, oil-source rock correlation, TSR

CLC Number:

TE122.1

LI Lei, LI Sumei, ZHANG Hongan, XU Tianwu, ZHANG Yunxian, JI Hong. Characteristics and Formation Mechanisms for the Saline Lacustrine Oil in the West Slope of the Dongpu Sag[J]. Geoscience, 2018, 32(06): 1109-1124.

Figures/Tables 13

Fig.1 Regional tectonic map of the West Slope in the Dongpu Sag and location of the samples collected

Fig. 2 Characteristics of oil physical properties and group composition for the oils from the West Slope, Dongpu Sag

Fig. 3 Total ion chromatogram (TIC) of saturated fraction in the oils from the West Slope of the Dongpu Sag((a)Mazhai oil; (b)Huqing oil; (c)Xingzhuang-Liutun oil)

Table 1 Basic geochemical parameters of the oils from the West Slope of the Dongpu Sag

地区	井号	埋深 /m	层位	Pr/ Ph	CPI	OEP	$C 21 -$ / $C 22 +$	C_21-22/ C_27-29	20S	αββ	Tri/ Pent	G/ C₃₀H	C₃₅/ C₃₄	C₂₉/ C₃₀	Ts	4-m/ C₂₉St	C_21-22/ C_27-29	Dia/ Reg	DBT /P	R_c /%
胡庆	胡68-2	2 766	E $s 2 下$	0.35	0.99	0.89	0.56	0.89	0.30	0.28	0.19	0.62	0.99	0.40	0.24	0.27	0.010	0.11	0.22	0.62
	胡105-13	3 393	E $s 3 中$	0.49	0.95	1.00	0.88	1.08	0.34	0.35	0.54	0.49	1.02	0.40	0.43	0.25	0.028	0.18	0.20	0.63
	胡40-6	2 771	E $s 3 中$	0.39	0.96	0.93	0.65	1.10	0.33	0.33	0.26	0.36	0.99	0.40	0.32	0.26	0.016	0.15	0.14	0.69
	胡63-19	2 649	E $s 3 上$	0.31	0.96	0.95	0.60	1.04	0.24	0.24	0.19	0.65	1.01	0.35	0.26	0.21	0.008	0.10	0.20	0.72
	胡10-31	2 080	E $s 3 中$	0.52	0.90	1.13	0.49	0.52	0.29	0.28	0.21	0.50	1.08	0.38	0.28	0.18	0.013	0.17	0.10	0.62
	胡136-9	2 039	E $s 3 下$	0.42	0.96	0.87	0.75	0.97	0.37	0.36	0.26	0.41	1.11	0.39	0.35	0.21	0.017	0.23	0.10	0.78
	胡39-12	2 944	E $s 3 下$	0.44	0.99	0.99	0.58	0.90	0.34	0.30	0.17	0.43	1.08	0.41	0.26	0.16	0.012	0.20	0.16	0.66
	胡47-35	2 150	E $s 3 下$	0.47	0.97	1.01	0.90	1.15	0.35	0.35	0.28	0.42	1.14	0.40	0.36	0.20	0.017	0.23	0.09	0.77
	胡5-211	2 378	E $s 3 中$	0.37	0.97	1.00	0.66	1.07	0.32	0.33	0.32	0.44	1.03	0.40	0.39	0.23	0.017	0.17	0.14	0.70
	胡52-16	2 593	E $s 3 中$	0.38	0.95	0.89	0.64	0.98	0.29	0.28	0.23	0.72	1.00	0.41	0.27	0.21	0.011	0.10	0.18	0.65
	胡5-238	2 196	E $s 3 中$	0.36	0.97	0.99	0.75	1.12	0.33	0.31	0.26	0.37	1.01	0.39	0.34	0.22	0.013	0.13	0.14	0.76
	胡5-4	2 214	E $s 3 中$	0.45	0.99	1.00	0.75	1.10	0.37	0.40	0.45	0.45	1.18	0.37	0.49	0.24	0.025	0.60	0.11	0.72
	胡5-75	1 979	E $s 3 上$	0.41	0.93	0.85	0.45	0.74	0.34	0.32	0.22	0.64	1.00	0.37	0.35	0.30	0.013	0.22	0.13	0.70
	胡7-123	1 739	E $s 3 中$	0.42	1.11	1.11	0.35	1.08	0.31	0.30	0.25	0.46	1.11	0.37	0.32	0.23	0.014	0.18	0.14	0.73
	胡7-319	1 682	E $s 3 中$	0.39	0.99	0.90	0.62	0.96	0.30	0.30	0.24	0.44	1.13	0.38	0.30	0.21	0.013	0.16	0.12	0.80
	胡7-67	2 570	E $s 3 下$	0.34	0.96	0.87	0.61	0.79	0.32	0.28	0.17	0.54	1.17	0.37	0.23	0.16	0.010	0.18	0.21	0.75
	庆19-10	2 920	E $s 3 中$	0.46	1.00	1.04	0.82	1.23	0.29	0.28	0.27	0.52	0.88	0.45	0.29	0.20	0.015	0.10	0.14	0.71
	庆6-9	2 655	E $s 3 下$	0.48	1.03	1.05	1.10	1.28	0.32	0.30	0.28	0.56	0.95	0.43	0.29	0.18	0.016	0.11	0.13	0.70
	庆98-5	2 941	E $s 3 中$	0.43	0.98	1.02	0.90	1.08	0.30	0.27	0.25	0.61	0.93	0.42	0.26	0.20	0.012	0.09	0.19	0.62
邢庄	胡19-42	1 834	E $s 3 下$	0.34	1.03	0.90	0.56	0.82	0.31	0.33	0.18	0.50	1.23	0.34	0.28	0.17	0.014	0.14	0.24	0.75
	胡19-50	2 188	E $s 3 中$	0.20	1.00	0.87	0.49	0.70	0.19	0.25	0.13	0.71	1.58	0.25	0.39	0.23	0.005	0.14	1.33	0.75
	胡19-51	2 576	E $s 3 下$	0.35	1.03	1.01	0.68	1.14	0.17	0.28	0.20	0.25	1.14	0.42	0.32	0.14	0.008	0.13	0.14	0.80
	胡96-3	4 072	E $s 3 中$	0.42	0.98	0.96	1.09	1.44	0.44	0.65	1.23	1.22	0.02	0.48	0.40	0.33	0.089	0.63	0.05	0.87
	濮深18	3 886	E $s 3 中$	0.52	0.96	0.94	1.29	1.49	0.55	0.60	1.23	0.77	1.44	0.31	0.66	0.18	0.046	0.46	0.11	0.88
	濮深18-2	4 167	E $s 3 中$	0.54	0.96	1.00	1.02	1.15	0.46	0.69	1.36	2.23	0.32	0.86	0.73	0.22	0.050	0.86	0.15	0.93
马寨	卫95-212	1 939	E $s 3 下$	0.39	0.82	0.78	0.82	0.97	0.36	0.30	0.11	0.55	1.61	0.33	0.23	0.25	0.009	0.12	0.32	0.71
	卫334-13	2 792	E $s 3 下$	0.36	0.84	0.85	0.73	1.01	0.35	0.28	0.12	0.54	1.64	0.29	0.26	0.28	0.008	0.11	0.263	0.68
	卫410	2 052	E $s 2 下$	0.40	0.91	0.87	0.55	0.85	0.38	0.34	0.16	0.76	1.49	0.34	0.29	0.20	0.011	0.13	0.24	0.71
	卫349-24	3 249	E $s 3 下$	0.41	0.89	0.80	0.54	0.81	0.48	0.38	0.15	0.66	1.45	0.35	0.26	0.24	0.013	0.17	0.15	0.68
	卫305-3	2 740	E $s 3 中$	0.35	0.92	0.99	0.86	1.11	0.34	0.28	0.10	0.52	1.59	0.32	0.22	0.26	0.008	0.11	0.42	0.70
	卫305-22	2 567	E $s 3 下$	0.40	0.84	0.93	0.84	1.06	0.37	0.31	0.11	0.59	1.60	0.34	0.27	0.24	0.010	0.13	0.24	0.68

Table 1 Basic geochemical parameters of the oils from the West Slope of the Dongpu Sag

地区	井号	埋深 /m	层位	Pr/ Ph	CPI	OEP	$C 21 -$ / $C 22 +$	C_21-22/ C_27-29	20S	αββ	Tri/ Pent	G/ C₃₀H	C₃₅/ C₃₄	C₂₉/ C₃₀	Ts	4-m/ C₂₉St	C_21-22/ C_27-29	Dia/ Reg	DBT /P	R_c /%
胡庆	胡68-2	2 766	E $s 2 下$	0.35	0.99	0.89	0.56	0.89	0.30	0.28	0.19	0.62	0.99	0.40	0.24	0.27	0.010	0.11	0.22	0.62
	胡105-13	3 393	E $s 3 中$	0.49	0.95	1.00	0.88	1.08	0.34	0.35	0.54	0.49	1.02	0.40	0.43	0.25	0.028	0.18	0.20	0.63
	胡40-6	2 771	E $s 3 中$	0.39	0.96	0.93	0.65	1.10	0.33	0.33	0.26	0.36	0.99	0.40	0.32	0.26	0.016	0.15	0.14	0.69
	胡63-19	2 649	E $s 3 上$	0.31	0.96	0.95	0.60	1.04	0.24	0.24	0.19	0.65	1.01	0.35	0.26	0.21	0.008	0.10	0.20	0.72
	胡10-31	2 080	E $s 3 中$	0.52	0.90	1.13	0.49	0.52	0.29	0.28	0.21	0.50	1.08	0.38	0.28	0.18	0.013	0.17	0.10	0.62
	胡136-9	2 039	E $s 3 下$	0.42	0.96	0.87	0.75	0.97	0.37	0.36	0.26	0.41	1.11	0.39	0.35	0.21	0.017	0.23	0.10	0.78
	胡39-12	2 944	E $s 3 下$	0.44	0.99	0.99	0.58	0.90	0.34	0.30	0.17	0.43	1.08	0.41	0.26	0.16	0.012	0.20	0.16	0.66
	胡47-35	2 150	E $s 3 下$	0.47	0.97	1.01	0.90	1.15	0.35	0.35	0.28	0.42	1.14	0.40	0.36	0.20	0.017	0.23	0.09	0.77
	胡5-211	2 378	E $s 3 中$	0.37	0.97	1.00	0.66	1.07	0.32	0.33	0.32	0.44	1.03	0.40	0.39	0.23	0.017	0.17	0.14	0.70
	胡52-16	2 593	E $s 3 中$	0.38	0.95	0.89	0.64	0.98	0.29	0.28	0.23	0.72	1.00	0.41	0.27	0.21	0.011	0.10	0.18	0.65
	胡5-238	2 196	E $s 3 中$	0.36	0.97	0.99	0.75	1.12	0.33	0.31	0.26	0.37	1.01	0.39	0.34	0.22	0.013	0.13	0.14	0.76
	胡5-4	2 214	E $s 3 中$	0.45	0.99	1.00	0.75	1.10	0.37	0.40	0.45	0.45	1.18	0.37	0.49	0.24	0.025	0.60	0.11	0.72
	胡5-75	1 979	E $s 3 上$	0.41	0.93	0.85	0.45	0.74	0.34	0.32	0.22	0.64	1.00	0.37	0.35	0.30	0.013	0.22	0.13	0.70
	胡7-123	1 739	E $s 3 中$	0.42	1.11	1.11	0.35	1.08	0.31	0.30	0.25	0.46	1.11	0.37	0.32	0.23	0.014	0.18	0.14	0.73
	胡7-319	1 682	E $s 3 中$	0.39	0.99	0.90	0.62	0.96	0.30	0.30	0.24	0.44	1.13	0.38	0.30	0.21	0.013	0.16	0.12	0.80
	胡7-67	2 570	E $s 3 下$	0.34	0.96	0.87	0.61	0.79	0.32	0.28	0.17	0.54	1.17	0.37	0.23	0.16	0.010	0.18	0.21	0.75
	庆19-10	2 920	E $s 3 中$	0.46	1.00	1.04	0.82	1.23	0.29	0.28	0.27	0.52	0.88	0.45	0.29	0.20	0.015	0.10	0.14	0.71
	庆6-9	2 655	E $s 3 下$	0.48	1.03	1.05	1.10	1.28	0.32	0.30	0.28	0.56	0.95	0.43	0.29	0.18	0.016	0.11	0.13	0.70
	庆98-5	2 941	E $s 3 中$	0.43	0.98	1.02	0.90	1.08	0.30	0.27	0.25	0.61	0.93	0.42	0.26	0.20	0.012	0.09	0.19	0.62
邢庄	胡19-42	1 834	E $s 3 下$	0.34	1.03	0.90	0.56	0.82	0.31	0.33	0.18	0.50	1.23	0.34	0.28	0.17	0.014	0.14	0.24	0.75
	胡19-50	2 188	E $s 3 中$	0.20	1.00	0.87	0.49	0.70	0.19	0.25	0.13	0.71	1.58	0.25	0.39	0.23	0.005	0.14	1.33	0.75
	胡19-51	2 576	E $s 3 下$	0.35	1.03	1.01	0.68	1.14	0.17	0.28	0.20	0.25	1.14	0.42	0.32	0.14	0.008	0.13	0.14	0.80
	胡96-3	4 072	E $s 3 中$	0.42	0.98	0.96	1.09	1.44	0.44	0.65	1.23	1.22	0.02	0.48	0.40	0.33	0.089	0.63	0.05	0.87
	濮深18	3 886	E $s 3 中$	0.52	0.96	0.94	1.29	1.49	0.55	0.60	1.23	0.77	1.44	0.31	0.66	0.18	0.046	0.46	0.11	0.88
	濮深18-2	4 167	E $s 3 中$	0.54	0.96	1.00	1.02	1.15	0.46	0.69	1.36	2.23	0.32	0.86	0.73	0.22	0.050	0.86	0.15	0.93
马寨	卫95-212	1 939	E $s 3 下$	0.39	0.82	0.78	0.82	0.97	0.36	0.30	0.11	0.55	1.61	0.33	0.23	0.25	0.009	0.12	0.32	0.71
	卫334-13	2 792	E $s 3 下$	0.36	0.84	0.85	0.73	1.01	0.35	0.28	0.12	0.54	1.64	0.29	0.26	0.28	0.008	0.11	0.263	0.68
	卫410	2 052	E $s 2 下$	0.40	0.91	0.87	0.55	0.85	0.38	0.34	0.16	0.76	1.49	0.34	0.29	0.20	0.011	0.13	0.24	0.71
	卫349-24	3 249	E $s 3 下$	0.41	0.89	0.80	0.54	0.81	0.48	0.38	0.15	0.66	1.45	0.35	0.26	0.24	0.013	0.17	0.15	0.68
	卫305-3	2 740	E $s 3 中$	0.35	0.92	0.99	0.86	1.11	0.34	0.28	0.10	0.52	1.59	0.32	0.22	0.26	0.008	0.11	0.42	0.70
	卫305-22	2 567	E $s 3 下$	0.40	0.84	0.93	0.84	1.06	0.37	0.31	0.11	0.59	1.60	0.34	0.27	0.24	0.010	0.13	0.24	0.68

Fig.4 Cross plot of Pr/nC17 versus Ph/nC18((a)according to Seifert and Moldowan[15], 1986) and Pr/Ph versus dibenzothiophene/phenanthrene ((b)according to Hughes et al[16], 1995) for the oils from the West Slope of the Dongpu Sag

Fig.5 Partial m/z 217 mass fragmentograms of saturated hydrocarbon fractions from selected oils in the West Slope of the Dongpu Sag ((a)Mazhai oil; (b)Huqing oil; (c)Xingzhuang-liutun oil)

Fig.6 Partial m/z 191 mass fragmentograms of saturated hydrocarbon fractions from selected oils in the West Slope of the Dongpu Sag((a)Mazhai oil;(b)Huqing oil;(c)Xingzhuang-liutun oil)

Fig.7 Composition and relative distribution of the aromatic fractions in the oils from the West Slope of the Dongpu Sag

Fig. 8 Characteristics of the NSO compounds in partial oils in the West Slope of the Dongpu Sag

Fig.9 Oil families subdivision for the selected oils from the West Slope in the Dongpu Sag

Fig.10 Distribution pattern of compound specific carbon isotope for the crude oils in the Dongpu West Slope

Fig.11 Sedimentary environment and maturity correlation for the analyzed oils and source rocks from the West Slope of Dongpu Sag

Fig.12 Oil-source rock correlation by steranes and terpanes fingerprints

References 49

[1]	王萍霞, 王学军. 东濮凹陷西部斜坡带胡庆地区成藏潜力分析[J]. 内蒙古石油化工, 2012, 17:136-138.
[2]	陈湘飞. 东濮凹陷盐湖相含膏盐岩层系成烃与成藏效应[D]. 北京: 中国石油大学(北京), 2017:43-97.
[3]	刘俊海, 陈小宏, 杨香华, 等. 胡庆油田湖相原油咔唑类化合物的地球化学特征[J]. 沉积学报, 2006, 42(1): 123-128.
[4]	韩小琴, 王立志, 何锋, 等. 东濮凹陷胡-庆断阶带油气成藏条件及潜力分析[J]. 河南石油, 2003, 17(4): 10-12.
[5]	刘振旺, 阎德飞, 王渊, 等. 东濮凹陷胡庆油田一台阶深层油气成藏条件[J]. 兰州大学学报(自然科学版), 2006, 42(5): 7-10.
[6]	吴小红, 吕新华. 东濮凹陷胡庆油田烃源岩地球化学特征分析[J]. 海洋石油, 2005, 25(3): 29-35.
[7]	郝建光, 蒋有录, 刘景东, 等. 东濮凹陷胡庆地区油气成藏期及成藏过程[J]. 断块油气田, 2013, 20(1):38-42.
[8]	张云献, 沈忠民, 刘海燕. 东濮凹陷西部斜坡带油藏地球化学特征[J]. 成都理工大学学报(自然科学版), 2007, 34(5):531-537.
[9]	张云献. 东濮凹陷胡庆油田油藏地球化学与成藏规律研究[D]. 成都: 成都理工大学, 2011: 63-69.
[10]	唐文旭. 东濮凹陷胡庆断阶带油气成藏动力学[D]. 北京: 中国地质大学(北京), 2008:65-66.
[11]	许杰, 李银花, 李建荣, 等. 东濮凹陷西部斜坡带沙三下亚段-沙四段油气聚集规律研究[J]. 江汉石油学院学报, 2002, 24(4): 16-18.
[12]	王立志, 马维民, 向曰忠, 等. 东濮凹陷复杂断块油气成藏规律与模式[J]. 断块油气田, 2002, 9(3): 15-18.
[13]	何方, 杨永林, 吕迎红, 等. 东濮凹陷西部斜坡带油气勘探潜力分析[J]. 江汉石油学院学报, 2004, 26(1): 25-26.
[14]	WAN Zhonghua, LI Sumei, PANG Xiongqi, et al. Characteristics and geochemical significance of heteroatom compounds in terrestrial oils by negative-ion electrospray Fourier transform ion cyclotron resonance mass spectrometry[J]. Organic Geochemistry, 2017, 111: 34-55. DOI URL
[15]	SEIFERT W K, MOLDOWAN J M. Use of biological markers in petroleum exploration[J]. Methods in Geochemistry & Geophysics, 1986, 24: 261-290.
[16]	HUGHES W B, HOLBA A G, DZUO L I P. The ratios of dibenzothio-phene to phenanthrenes and pristane to phytane as indicators of the depositional environment and lithology of petroleum source rocks[J]. Geochimica et Cosmochimica Acia, 1995, 59(17): 3581-3598.
[17]	包建平, 朱翠山, 汪立群. 柴达木盆地西部原油地球化学特征对比[J]. 石油与天然气地质, 2010, 31(3):353-359.
[18]	GRBA N, ŠAJNOVIĈ A, STOJANOVIĈ K, et al. Preservation of diagenetic products of β-carotene in sedimentary rocks from the Lopare Basin (Bosnia and Herzegovina)[J]. Chemie der Erde-Geochemistry, 2014, 74(1): 107-123. DOI URL
[19]	曾宪章, 梁狄刚, 王忠然, 等. 中国陆相原油和生油岩中的生物标志物[J]. 兰州:甘肃科学技术出版社, 1989:225-260.
[20]	BOREHAM C J, CRICK I H, POWELL T G. Alternative calibration of the Methylphenanthrene Index against vitrinite reflectance: Application to maturity measurements on oils and sediments[J]. Organic Geochemistry, 1988, 12(3): 289-294. DOI URL
[21]	PETERS K E, WALTERS C C, MOLDOWAN J M. The Biomarker Guide[M]. 2nd ed. New York: Cambridge University Press, 2005: 9-157.
[22]	李素梅, 姜振学, 董月霞, 等. 渤海湾盆地南堡凹陷原油成因类型及其分布规律[J]. 现代地质, 2008, 22(5): 817-823.
[23]	李素梅, 庞雄奇, 邱桂强, 等. 东营凹陷南斜坡王家岗地区第三系原油特征及其意义[J]. 地球化学, 2005, 34(5):515-524.
[24]	PETERS K E, MOLDOWAN J M. The Biomarker Guide: Interpreting Molecular Fossils in Petroleum and Ancient Sediments[M]. New Jersey: Prentice Hall, 1993: 10-89.
[25]	朱扬明, 苏爱国, 梁狄刚, 等. 柴达木盆地西部第三系咸水湖相原油地球化学特征[J]. 地质科学, 2004, 39(4):475-485.
[26]	江继刚, 彭平安, 傅家谟, 等. 盐湖盆地油气生成运移聚集[M]. 广州: 广东科技出版社, 2004: 12-40.
[27]	孟仟祥, 张松林, 崔明中, 等. 不同沉积环境湖相低熟原油的芳烃分布特征[J]. 沉积学报, 1999, 17(1):112-120.
[28]	张水昌, 黄汝昌, 于心科. 盐湖盆地沉积有机质中的脱羟基维生素E[J]. 沉积学报, 1990, 8(1):57-64.
[29]	LIN R Z, WANG P R. PAH in fossil fuels and their geochemical significance[J]. Journal of Southeast Asian Earth Sciences, 1991, 5(1): 257-262. DOI URL
[30]	LI S M, AMRANI A, PANG X Q, et al. Origin and quantitative source assessment of deep oils in the Tazhong Uplift, Tarim Basin[J]. Organic Geochemistry, 2015, 78: 1-22. DOI URL
[31]	HUGHEY C A, HENDRICKSON C L, RODGERS R P, et al. Kendrick mass defect spectrum: A compact visual analysis for ultrahigh-resolution broadband mass spectra[J]. Analytical Chemistry, 2001, 73(19): 4676-4681. PMID
[32]	OLDENBURG T B P, BROWN M, BENNETT B, et al. The impact of thermal maturity level on the composition of crude oils, assessed using ultra-high resolution mass spectrometry[J]. Organic Geochemistry, 2014, 75: 151-168. DOI URL
[33]	QIAN K, EDWARDS K E, DIEHL J H, et al. Fundamentals and applications of electrospray ionization mass spectrometry for petroleum characterization[J]. Energy & Fuels, 2004, 18(6): 1784-1791. DOI URL
[34]	LI S, SHI Q, PANG X, et al. Origin of the unusually high dibenzothiophene oils in Tazhong-4 Oilfield of Tarim Basin and its implication in deep petroleum exploration[J]. Organic Geochemistry, 2012, 48: 56-80. DOI URL
[35]	KIM S, STANFORD L A, RODGERS R P, et al. Microbial alteration of the acidic and neutral polar NSO compounds revealed by Fourier transform ion cyclotron resonance mass spectrometry[J]. Organic Geochemistry, 2005, 36: 1117-1134. DOI URL
[36]	LIAO Y, SHI Q, HSU C S, et al. Distribution of acids and nitrogen-containing compounds in biodegraded oils of the Liaohe Basin by negative ion ESI FT-ICR MS[J]. Organic Geochemistry, 2012, 47: 51-65. DOI URL
[37]	PAN Y, LIAO Y, ZHENG Y. Effect of biodegradation on the molecular composition and structure of asphaltenes: Clues from quantitative Py-GC and THM-GC[J]. Organic Geochemistry, 2015, 86: 32-44. DOI URL
[38]	LI S, AMRANI A, PANG X, et al. Origin and quantitative source assessment of deep oils in the Tazhong Uplift, Tarim Basin[J]. Organic Geochemistry, 2015, 78: 1-22. DOI URL
[39]	LIU P, LI M, JIANG Q, et al. Effect of secondary oil migration distance on composition of acidic NSO compounds in crude oils determined by negative-ion electrospray Fourier transform ion cyclotron resonance mass spectrometry[J]. Organic Geochemistry, 2015, 78: 23-31. DOI URL
[40]	JI Hong, LI Sumei, GREENWOOD P, et al. Geochemical characteristics and significance of heteroatom compounds in lacustrine oils of the Dongpu Depression (Bohai Bay Basin, China) by negative-ion Fourier transform ion cyclotron resonance mass spectrometry[J]. Marine and Petroleum Geology, 2018, 97: 568-591. DOI URL
[41]	WALTERS C C, WANG F C, QIAN K, et al. Petroleum alteration by thermochemical sulfate reduction—A comprehensive molecular study of aromatic hydrocarbons and polar compounds[J]. Geochimica et Cosmochimica Acta, 2015, 153: 37-71. DOI URL
[42]	苏惠, 张金川, 曲丽萍, 等. 东濮凹陷西斜坡油藏地球化学特征[J]. 石油天然气学报(江汉石油学院学报), 2005, 27(6):711-715.
[43]	CLAYTON C J, BJORØY M. Effect of maturity on ¹³C¹²C ratios of individual compounds in North Sea oils[J]. Organic Geochemistry, 1994, 21: 737-750. DOI URL
[44]	ZHU Y M, WENG H X, SU A G. Geochemical characteristics of Tertiary saline lacustrine oils in the Western Qaidam Basin,northwest China[J]. Applied Geochemistry, 2005, 20 (10) :1875-1889. DOI URL
[45]	ANDREW P M, ROGER E S, CHRISTOPHER J B, et al. Biomarker and n-alkane isotope profiles for Tertiary oils: relationship to source rock depositional setting[J]. Organic Geochemistry, 1994, 22 (3/5):521-542. DOI URL
[46]	BOREHAM C J, SUMMONS R E, ROKSANDIC Z, et al. Chemical, molecular and isotopic differentiation of organic facies in the Tertiary lacustrine Duaringa oilshale deposit, Queensland, Australia[J]. Organic Geochemistry, 1994, 21:685-712. DOI URL
[47]	张洪安, 李素梅, 徐田武, 等. 东濮凹陷北部盐湖相原油特征与成因[J]. 现代地质, 2017, 31(4):768-778.
[48]	蒋有录, 房磊, 谈玉明, 等. 渤海湾盆地东濮凹陷不同区带油气成藏期差异性及主控因素[J]. 地质论评, 2015, 61(6): 1321-1331.
[49]	MELLO U T, KARNER G D, ANDERSON R N. Role of salt in restraining the maturation of subsalt source rocks[J]. Marine and Petroleum Geology, 1995, 12(7): 697-716. DOI URL