Geochemical characteristics and source of crude oil from the eastern Shawan Sag, Junggar Basin
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摘要: 沙湾凹陷是准噶尔盆地腹部重要的勘探领域之一,为了更好地厘清凹陷内二叠系、侏罗系和白垩系储层中原油的来源,明确油气成藏过程和富集规律,对该凹陷东部典型井原油样品开展了碳同位素和生物标志化合物分析,并基于对原油地球化学特征的分析,开展了原油分类和油源对比。沙湾凹陷东部不同层系原油可以分为3类:第一类原油赋存于二叠系及侏罗系储层中,其全油δ13C值和Pr/Ph比值分别介于-31.0‰~-29.0‰和1.0~2.0,αααR规则甾烷相对含量具有C27<C28<C29的特征,萜烷类多数表现出C20<C21>C23TT、C24TeT/C26TT<1的特征,且伽马蜡烷指数均小于0.30,这类原油主体来自中二叠统下乌尔禾组烃源岩,其中上二叠统上乌尔禾组油样中未检出Ts,β-胡萝卜烷/C30藿烷比值大于1,三环萜烷分布表现出C20>C21>C23TT的特征,且甲基菲分布分数反映了原油处于高成熟演化阶段,这表明其中混入了少量下二叠统烃源岩生成的原油;第二类原油赋存于中侏罗统储层中,其典型特征为全油δ13C值及正构烷烃单体δ13C值主体大于-29.0‰,Pr/Ph比值相对较高,介于2.0~2.5,且C24TeT/C26TT比值大于1,表明这类原油主体为侏罗系烃源岩生成;第三类原油赋存于下白垩统储层中,其全油δ13C值和Pr/Ph比值分别小于-31.0‰和1.0,αααR规则甾烷含量呈C27≈C28<C29特征,伽马蜡烷指数均高于0.50,正构烷烃单体δ13C值随碳数升高而逐渐降低,且主体小于-31‰,表明这类原油主要来自下白垩统烃源岩。Abstract: The Shawan Sag is one of the important exploration areas in the hinterland of the Junggar Basin. In order to better clarify the source of crude oil from the Permian, Jurassic and Cretaceous reservoirs in the sag and identify hydrocarbon accumulation processes and enrichment pattern, the authors conducted a carbon isotope and biomarker analysis on the typical crude oil samples from the eastern Shawan Sag in this study, and further carried out crude oil classification and oil-source correlation based on the analysis of geochemical characteristics of crude oil. The results indicate that the crude oil from different strata in the eastern Shawan Sag can be divided into three types. The first type mainly occurs in the Permian and Jurassic reservoirs, and its whole oil δ13C value and Pr/Ph ratio range from -31.0‰ to -29.0‰ and from 1.0 to 2.0, respectively. The relative contents of αααR regular sterane display the characteristics of C27 < C28 < C29, and the terpanes are mainly characterized by C20 < C21>C23 TT and C24TeT/C26TT < 1, with the gammacerane index lower than 0.30. This type of crude oil is mainly derived from the source rocks in the Middle Permian Lower Wuerhe Formation. In the oil samples from the Upper Permian Upper Wuerhe Formation, Ts content is below the detection limit, the β-carotane/C30 hopane ratio is greater than 1, and the tricyclic terpane distribution displays the characteristics of C20>C21>C23TT. The distribution fraction of methyl phenanthrene reflects that the crude oil is in the stage of high-maturity evolution. All these indicate the mixing of crude oil generated in the Lower Permian source rocks. The second type occurs in the Middle Jurassic reservoirs. The whole oil δ13C value and individual n-alkanes δ13C value are higher than -29.0‰. The Pr/Ph ratio is relatively higher, ranging from 2.0 to 2.5, with C24TeT/C26TT>1, which indicate that this type of crude oil is mainly derived from the Jurassic source rocks. The third type occurs in the Lower Cretaceous reservoirs, and its whole oil δ13C value and Pr/Ph ratio are lower than -31.0‰ and 1.0, respectively. The αααR regular sterane contents display the characteristics of C27≈C28 <C29, with the gammacerane index higher than 0.50. The individual n-alkanes δ13C value gradually decreases with the increase of carbon number and is commonly lower than -31.0‰. This type of oil is demonstrated to be mainly derived from the Lower Cretaceous source rocks.
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Key words:
- crude oil /
- carbon isotope /
- biomarker /
- saturated hydrocarbon /
- aromatic hydrocarbon /
- oil-source correlation /
- Shawan Sag /
- Junggar Basin
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图 2 准噶尔盆地沙湾凹陷东部原油Pr/Ph与δ13C相关图
底图据陈建平等[25]。
Figure 2. Correlation between Pr/Ph and δ13C of crude oil from the eastern Shawan Sag, the Junggar Basin
图 6 准噶尔盆地沙湾凹陷东部原油F1与F2相关图
底图据包建平等[34]。
Figure 6. Correlation between F1 and F2 of crude oil from the eastern Shawan Sag, the Junggar Basin
表 1 准噶尔盆地沙湾凹陷东部原油生物标志化合物及全油碳同位素组成特征
Table 1. Biomarker and whole oil carbon isotope composition characteristics of crude oil from the eastern Shawan Sag, the Junggar Basin
井号 深度/m 层位 主峰碳 OEP CPI Pr/Ph Pr/nC17 Ph/nC18 Ts/Tm αααC27 /% αααC28/% αααC29/% C29 ααα20S/(20S+20R) C29 αββ/(αββ+ααα) Y2 6 051~6 061 J2x C17 1.01 1.13 2.17 0.25 0.12 0.91 9.5 29.6 60.9 0.50 0.52 Y3 5 801~5 845 J1s C19 1.16 1.16 1.27 0.59 0.50 0.68 12.8 39.0 48.2 0.49 0.55 Y6 6 026~6 038 J2x C18 1.00 1.12 1.77 0.29 0.16 0.76 12.5 39.1 48.4 0.49 0.50 Y6 5 858~5 870 K1Tg C15 1.12 1.04 0.68 0.64 1.04 0.93 23.9 24.6 51.5 0.45 0.44 Y6 5 914~5 918 K1Tg C15 1.08 1.03 0.68 0.65 1.05 0.98 21.8 24.3 53.9 0.46 0.46 Z10 7 596~7 655 P3w C17 1.03 1.15 1.40 0.25 0.19 - - 45.2 54.8 0.48 0.51 Z6 5 121~5 132 J1s C17 1.01 1.14 1.64 0.36 0.23 0.67 12.8 33.1 54.1 0.47 0.51 H11 3 049~3 931 P1f C17 1.21 1.12 0.64 1.10 2.12 - 4.2 38.6 57.2 0.46 0.29 井号 C19/C20TT C20/C21TT C21/C23TT C24TeT/C26TT Ga/C30H C35S/C34S C35H/C31-35H β-胡萝卜烷/C30H 9-MP/1-MP F1 F2 DBT/Phen MDBTs/MDBFs δ13C/‰ Y2 1.05 1.49 1.14 1.43 0.08 0.47 0.032 - 1.42 0.54 0.28 0.08 0.77 -27.3 Y3 0.28 0.90 1.36 0.51 0.18 0.44 0.033 1.56 1.48 0.50 0.28 0.06 0.33 -30.4 Y6 0.21 0.72 1.26 0.45 0.30 0.55 0.046 0.61 1.46 0.50 0.27 0.08 0.79 -29.7 Y6 0.35 0.63 1.06 0.53 0.69 0.44 0.041 0.80 1.14 0.44 0.25 0.02 0.41 -31.5 Y6 0.30 0.71 1.01 0.66 0.76 0.47 0.040 0.78 1.14 0.44 0.25 0.02 0.55 -31.3 Z10 - 1.21 1.03 0.12 - - - 8.27 1.12 0.76 0.45 - - -30.2 Z6 0.32 0.77 1.19 0.65 0.23 0.45 0.025 0.66 1.67 0.40 0.20 0.16 0.50 -29.4 H11 0.19 0.71 0.66 0.85 0.24 0.56 0.037 1.28 1.18 0.60 0.33 - - -30.4 注:F1和F2分别为(2-MP+3-MP)/(1-MP+2-MP+3-MP+9-MP)和2-MP/(1-MP+2-MP+3-MP+9-MP)。 表 2 准噶尔盆地沙湾凹陷东部不同类型原油及西北缘原油地化特征综合对比
Table 2. Comprehensive comparison of different types of crude oil from the eastern Shawan Sag and the crude oil from the northwestern margin of the Junggar Basin
地化特征 沙湾凹陷原油分类 西北缘原油 Ⅰ类 Ⅱ类 Ⅲ类 储层 P3w, J1s, J2x J2x K1Tg P1f 全油δ13C/‰ -31.0~-29.0 >-29.0 <-31.0 <-29.0 Pr/Ph 1.0~2.0 2.0~2.5 <1.0 <1.0 Pr/nC17 <1.0 <1.0 <1.0 >1.0 Ph/nC18 <1.0 ≈1.0 <1.0 >1.0 αααR规则甾烷 C27<C28<C29 C27<C28<C29 C27≈C28<C29 C27<C28<C29 β-胡萝卜烷/C30H <1.0, 少部分>1.0 ≈0 <1.0 >1.0 三环萜烷分布 C20 <C21>C23TT C20>C21>C23TT C20 <C21≈C23TT C20<C21<C23TT C24TeT/C26TT <1.0 >1.0 <1.0 <1.0 Ts/Tm <1.0 <1.0 0.93~0.98 <0.2 Ga/C30H <0.3 <0.1 0.69~0.76 >0.3 正构烷烃单体δ13C分布 先降低后升高 逐渐降低 先升高后降低 油源 P2w,部分P1 J1-2 K1 P1f -
[1] 匡立春, 唐勇, 雷德文, 等. 准噶尔盆地玛湖凹陷斜坡区三叠系百口泉组扇控大面积岩性油藏勘探实践[J]. 中国石油勘探, 2014, 19(6): 14-23. doi: 10.3969/j.issn.1672-7703.2014.06.002KUANG Lichun, TANG Yong, LEI Dewen, et al. Exploration of fan-controlled large-area lithologic oil reservoirs of Triassic Baikouquan Formation in slope zone of Mahu Depression in Junggar Basin[J]. China Petroleum Exploration, 2014, 19(6): 14-23. doi: 10.3969/j.issn.1672-7703.2014.06.002 [2] 杜金虎, 支东明, 唐勇, 等. 准噶尔盆地上二叠统风险领域分析与沙湾凹陷战略发现[J]. 中国石油勘探, 2019, 24(1): 24-35. doi: 10.3969/j.issn.1672-7703.2019.01.004DU Jinhu, ZHI Dongming, TANG Yong, et al. Prospects in Upper Permian and strategic discovery in Shawan Sag, Junggar Basin[J]. China Petroleum Exploration, 2019, 24(1): 24-35. doi: 10.3969/j.issn.1672-7703.2019.01.004 [3] 何海清, 支东明, 唐勇, 等. 准噶尔盆地阜康凹陷康探1井重大突破及意义[J]. 中国石油勘探, 2021, 26(2): 1-11. doi: 10.3969/j.issn.1672-7703.2021.02.001HE Haiqing, ZHI Dongming, TANG Yong, et al. A great discovery of well Kangtan 1 in the Fukang Sag in the Junggar Basin and its significance[J]. China Petroleum Exploration, 2021, 26(2): 1-11. doi: 10.3969/j.issn.1672-7703.2021.02.001 [4] 雷德文, 陈刚强, 刘海磊, 等. 准噶尔盆地玛湖凹陷大油(气)区形成条件与勘探方向研究[J]. 地质学报, 2017, 91(7): 1604-1619. doi: 10.3969/j.issn.0001-5717.2017.07.012LEI Dewen, CHEN Gangqiang, LIU Hailei, et al. Study on the forming conditions and exploration fields of the Mahu giant oil (gas) province, Junggar Basin[J]. Acta Geologica Sinica, 2017, 91(7): 1604-1619. doi: 10.3969/j.issn.0001-5717.2017.07.012 [5] 唐勇, 宋永, 何文军, 等. 准噶尔叠合盆地复式油气成藏规律[J]. 石油与天然气地质, 2022, 43(1): 132-148. https://www.cnki.com.cn/Article/CJFDTOTAL-SYYT202201010.htmTANG Yong, SONG Yong, HE Wenjun, et al. Characteristics of composite hydrocarbon accumulation in a superimposed basin, Junggar Basin[J]. Oil & Gas Geology, 2022, 43(1): 132-148. https://www.cnki.com.cn/Article/CJFDTOTAL-SYYT202201010.htm [6] 张仲培, 张宇, 张明利, 等. 准噶尔盆地中部凹陷区二叠系—三叠系油气成藏主控因素与勘探方向[J]. 石油实验地质, 2022, 44(4): 559-568. doi: 10.11781/sysydz202204559ZHANG Zhongpei, ZHANG Yu, ZHANG Mingli, et al. Main contro-lling factors and exploration direction of Permian to Triassic reservior in the central sag of Junggar Basin[J]. Petroleum Geology & Experiment, 2022, 44(4): 559-568. doi: 10.11781/sysydz202204559 [7] HAO Fang, ZHANG Zhihuan, ZOU Huayao, et al. Origin and mechanism of the formation of the low-oil-saturation Moxizhuang field, Junggar Basin, China: implication for petroleum exploration in basins having complex histories[J]. AAPG Bulletin, 2011, 95(6): 983-1008. doi: 10.1306/11191010114 [8] ZHI Dongming, WANG Xiaojun, QIN Zhijun. Geneses, sources and accumulation process of natural gases in the hinterland of the Junggar Basin[J]. Frontiers in Earth Science, 2022, 10: 843245. doi: 10.3389/feart.2022.843245 [9] 李二庭, 陈俊, 曹剑, 等. 准噶尔盆地莫索湾地区原油地球化学特征及成因分析[J]. 石油实验地质, 2022, 44(1): 112-120. doi: 10.11781/sysydz202201112LI Erting, CHEN Jun, CAO Jian, et al. Geochemical characteristics and genetic analysis of crude oils in Mosuowan area, Junggar Basin[J]. Petroleum Geology & Experiment, 2022, 44(1): 112-120. doi: 10.11781/sysydz202201112 [10] 李二庭, 陈俊, 迪丽达尔·肉孜, 等. 准噶尔盆地腹部地区原油金刚烷化合物特征及应用[J]. 石油实验地质, 2019, 41(4): 569-576. doi: 10.11781/sysydz201904569LI Erting, CHEN Jun, ROUZI D, et al. Characteristics of diamondoids in crude oil and its application in hinterland of Junggar Basin[J]. Petroleum Geology & Experiment, 2019, 41(4): 569-576. doi: 10.11781/sysydz201904569 [11] 卞保力, 赵龙, 蒋文龙, 等. 准噶尔盆地东部白家海凸起天然气轻烃地球化学特征[J]. 天然气地球科学, 2023, 34(1): 83-95. https://www.cnki.com.cn/Article/CJFDTOTAL-TDKX202301008.htmBIAN Baoli, ZHAO Long, JIANG Wenlong, et al. Geochemical characteristics of light hydrocarbons associated with natural gas in the Baijiahai Bulge, eastern Junggar Basin[J]. Natural Gas Geoscience, 2023, 34(1): 83-95. https://www.cnki.com.cn/Article/CJFDTOTAL-TDKX202301008.htm [12] 费李莹, 王仕莉, 苏昶, 等. 准噶尔盆地盆1井西凹陷东斜坡侏罗系三工河组油气成藏特征及控制因素[J]. 天然气地球科学, 2022, 33(5): 708-719. https://www.cnki.com.cn/Article/CJFDTOTAL-TDKX202205003.htmFEI Liying, WANG Shili, SU Chang, et al. Characteristics of hydrocarbon accumulation and its controlling factors in Jurassic Sangonghe Formation in the east slope of well Pen-1 Western Depression in Junggar Basin[J]. Natural Gas Geoscience, 2022, 33(5): 708-719. https://www.cnki.com.cn/Article/CJFDTOTAL-TDKX202205003.htm [13] 钱海涛, 苏东旭, 阿布力米提·依明, 等. 准噶尔盆地盆1井西凹陷斜坡区油气地质特征及勘探潜力[J]. 天然气地球科学, 2021, 32(4): 551-561. https://www.cnki.com.cn/Article/CJFDTOTAL-TDKX202104009.htmQIAN Haitao, SU Dongxu, ABLIMIT I, et al. Petroleum geolo-gical characteristics and exploration potential in slope area of well Pen-1 Western Depression in Junggar Basin[J]. Natural Gas Geoscience, 2021, 32(4): 551-561. https://www.cnki.com.cn/Article/CJFDTOTAL-TDKX202104009.htm [14] 张辉, 陈勇, 王学军, 等. 准噶尔盆地中部侏罗系三工河组储层沥青地球化学特征及其对油气成藏过程的指示[J]. 石油实验地质, 2021, 43(6): 1054-1063. doi: 10.11781/sysydz2021061054ZHANG Hui, CHEN Yong, WANG Xuejun, et al. Geochemical characteristics of solid bitumen in the Jurassic Sangonghe Formation in the central Junggar Basin and its implications for hydrocarbon accumulation process[J]. Petroleum Geology & Experiment, 2021, 43(6): 1054-1063. doi: 10.11781/sysydz2021061054 [15] 陶国亮, 胡文瑄, 曹剑, 等. 准噶尔盆地腹部二叠系混源油油源组成与聚集特征研究[J]. 南京大学学报(自然科学), 2008, 44(1): 42-49. https://www.cnki.com.cn/Article/CJFDTOTAL-NJDZ200801004.htmTAO Guoliang, HU Wenxuan, CAO Jian, et al. Source composition and accumulation characteristics of Permian mixed oils in central Junggar Basin, NW China[J]. Journal of Nanjing University (Natural Sciences), 2008, 44(1): 42-49. https://www.cnki.com.cn/Article/CJFDTOTAL-NJDZ200801004.htm [16] 董雪梅, 李静, 胡婷婷, 等. 准噶尔盆地沙湾凹陷二叠系风城组油气地质特征、成藏模式及上超削蚀带勘探实践[J]. 石油学报, 2023, 44(3): 420-432. https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB202303002.htmDONG Xuemei, LI Jing, HU Tingting, et al. Hydrocarbon geolo-gical characteristics and accumulation model of Permian Fengcheng Formation, and exploration practice of onlap-truncation belt in Shawan Sag, Junggar Basin[J]. Acta Petrolei Sinica, 2023, 44(3): 420-432. https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB202303002.htm [17] 王绪龙, 支东明, 王屿涛, 等. 准噶尔盆地烃源岩与油气地球化学[M]. 北京: 石油工业出版社, 2013: 1-565.WANG Xulong, ZHI Dongming, WANG Yutao, et al. Source rocks and oil-gas geochemistry in Junggar Basin[M]. Beijing: Petroleum Industry Press, 2013: 1-565. [18] 李勇, 路俊刚, 刘向君, 等. 准噶尔盆地沙湾凹陷烃源岩地球化学特征及天然气勘探方向[J]. 天然气地球科学, 2022, 33(8): 1319-1331. https://www.cnki.com.cn/Article/CJFDTOTAL-TDKX202208010.htmLI Yong, LU Jungang, LIU Xiangjun, et al. Geochemical characteristics of source rocks and gas exploration direction in Shawan Sag, Junggar Basin[J]. Natural Gas Geoscience, 2022, 33(8): 1319-1331. https://www.cnki.com.cn/Article/CJFDTOTAL-TDKX202208010.htm [19] 龚德瑜, 刘海磊, 杨海波, 等. 准噶尔盆地风城组烃源岩生气潜力与天然气勘探领域[J]. 新疆石油地质, 2022, 43(6): 674-683. https://www.cnki.com.cn/Article/CJFDTOTAL-XJSD202206005.htmGONG Deyu, LIU Hailei, YANG Haibo, et al. Gas generation potential of Fengcheng Formation source rocks and exploration fields in Junggar Basin[J]. Xinjiang Petroleum Geology, 2022, 43(6): 674-683. https://www.cnki.com.cn/Article/CJFDTOTAL-XJSD202206005.htm [20] 陈建平, 王绪龙, 邓春萍, 等. 准噶尔盆地烃源岩与原油地球化学特征[J]. 地质学报, 2016, 90(1): 37-67. https://www.cnki.com.cn/Article/CJFDTOTAL-DZXE201601003.htmCHEN Jianping, WANG Xulong, DENG Chunping, et al. Geoche-mical features of source rocks and crude oil in the Junggar Basin, Northwest China[J]. Acta Geologica Sinica, 2016, 90(1): 37-67. https://www.cnki.com.cn/Article/CJFDTOTAL-DZXE201601003.htm [21] 秦黎明, 张枝焕, 李伟, 等. 准噶尔盆地中Ⅲ区块原油地球化学特征与油源分析[J]. 地质科技情报, 2007, 26(6): 59-65. https://www.cnki.com.cn/Article/CJFDTOTAL-DZKQ200706011.htmQIN Liming, ZHANG Zhihuan, LI Wei, et al. Geochemical characteristics of crude oil in the Ⅲ block in Junggar Basin and its oil-source correlation[J]. Geological Science and Technology Information, 2007, 26(6): 59-65. https://www.cnki.com.cn/Article/CJFDTOTAL-DZKQ200706011.htm [22] 朱日房. 准噶尔盆地永1井油气来源及成藏模式分析[J]. 石油实验地质, 2009, 31(5): 490-494. doi: 10.11781/sysydz200905490ZHU Rifang. Analysis of oil-gas source and reservoir-formed model in well Yong 1 of the Junggar Basin[J]. Petroleum Geo-logy & Experiment, 2009, 31(5): 490-494. doi: 10.11781/sysydz200905490 [23] 陈建平, 王绪龙, 邓春萍, 等. 准噶尔盆地南缘油气生成与分布规律: 典型类型原油油源对比[J]. 石油学报, 2016, 37(2): 160-171. https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB201604001.htmCHEN Jianping, WANG Xulong, DENG Chunping, et al. Oil-source correlation of typical crude oils in the southern margin, Junggar Basin, Northwestern China[J]. Acta Petrolei Sinica, 2016, 37(2): 160-171. https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB201604001.htm [24] 陈建平, 王绪龙, 邓春萍, 等. 准噶尔盆地南缘油气生成与分布规律: 原油地球化学特征与分类[J]. 石油学报, 2015, 36(11): 1315-1331. https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB201805001.htmCHEN Jianping, WANG Xulong, DENG Chunping, et al. Geoche-mical features and classification of crude oil in the southern margin of Junggar Basin, northwestern China[J]. Acta Petrolei Sinica, 2015, 36(11): 1315-1331. https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB201805001.htm [25] 陈建平, 王绪龙, 邓春萍, 等. 准噶尔盆地油气源、油气分布与油气系统[J]. 地质学报, 2016, 90(3): 421-450. https://www.cnki.com.cn/Article/CJFDTOTAL-DZXE201603002.htmCHEN Jianping, WANG Xulong, DENG Chunping, et al. Oil and gas source, occurrence and petroleum system in the Junggar Basin, Northwest China[J]. Acta Geologica Sinica, 2016, 90(3): 421-450. https://www.cnki.com.cn/Article/CJFDTOTAL-DZXE201603002.htm [26] 王绪龙, 康素芳. 准噶尔盆地腹部及西北缘斜坡区原油成因分析[J]. 新疆石油地质, 1999, 20(2): 108-112. https://www.cnki.com.cn/Article/CJFDTOTAL-XJSD902.006.htmWANG Xulong, KANG Sufang. Analysis of crude origin in hinterland and slope of northwestern margin, Junggar Basin[J]. Xinjiang Petroleum Geology, 1999, 20(2): 108-112. https://www.cnki.com.cn/Article/CJFDTOTAL-XJSD902.006.htm [27] 王绪龙, 康素芳. 准噶尔盆地西北缘玛北油田油源分析[J]. 西南石油学院学报, 2001, 23(6): 6-8. https://www.cnki.com.cn/Article/CJFDTOTAL-XNSY200106001.htmWANG Xulong, KANG Sufang. On the oil source of the Mabei oilfield, northwest Junggar Basin[J]. Journal of Southwest Petroleum Institute, 2001, 23(6): 6-8. https://www.cnki.com.cn/Article/CJFDTOTAL-XNSY200106001.htm [28] CAO Jian, ZHANG Yijie, HU Wenxuan, et al. The Permian hybrid petroleum system in the northwest margin of the Junggar Basin, northwest China[J]. Marine and Petroleum Geology, 2005, 22(3): 331-349. [29] 包建平, 何丹, 朱翠山, 等. 北部湾盆地迈陈凹陷徐闻X3井原油地球化学特征及其成因[J]. 天然气地球科学, 2017, 28(5): 665-676. https://www.cnki.com.cn/Article/CJFDTOTAL-TDKX201705001.htmBAO Jianping, HE Dan, ZHU Cuishan, et al. Geochemical characte-ristics and origin of a crude oil from well Xuwen X3 in the Maichen Sag, Beibuwan Basin, China[J]. Natural Gas Geoscience, 2017, 28(5): 665-676. https://www.cnki.com.cn/Article/CJFDTOTAL-TDKX201705001.htm [30] 吴小奇, 周小进, 陈迎宾, 等. 四川盆地川西坳陷上三叠统须家河组烃源岩分子地球化学特征[J]. 石油实验地质, 2022, 44(5): 854-865. doi: 10.11781/sysydz202205854WU Xiaoqi, ZHOU Xiaojin, CHEN Yingbin, et al. Molecular characteristics of source rocks in Upper Triassic Xujiahe Formation, Western Sichuan Depression, Sichuan Basin[J]. Petroleum Geology & Experiment, 2022, 44(5): 854-865. doi: 10.11781/sysydz202205854 [31] 曹剑, 雷德文, 李玉文, 等. 古老碱湖优质烃源岩: 准噶尔盆地下二叠统风城组[J]. 石油学报, 2015, 36(7): 781-790. https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB201507002.htmCAO Jian, LEI Dewen, LI Yuwen, et al. Ancient high-quality alkaline lacustrine source rocks discovered in the Lower Permian Fengcheng Formation, Junggar Basin[J]. Acta Petrolei Sinica, 2015, 36(7): 781-790. https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB201507002.htm [32] 宋长玉, 金洪蕊, 刘璇, 等. 烃源岩中甲基菲的分布及对成熟度参数的影响[J]. 石油实验地质, 2007, 29(2): 183-187. doi: 10.11781/sysydz200702183SONG Changyu, JIN Hongrui, LIU Xuan, et al. Distribution of methyl phenanthrene in sediments and its impacting on maturity parameters[J]. Petroleum Geology & Experiment, 2007, 29(2): 183-187. doi: 10.11781/sysydz200702183 [33] KVALHEIM O M, CHRISTY A A, TELNÆS N, et al. Maturity determination of organic matter in coals using the methylphenanthrene distribution[J]. Geochimica et Cosmochimica Acta, 1987, 51(7): 1883-1888. [34] 包建平, 王铁冠, 周玉琦, 等. 甲基菲比值与有机质热演化的关系[J]. 江汉石油学院学报, 1992, 14(4): 8-13. https://www.cnki.com.cn/Article/CJFDTOTAL-JHSX199204001.htmBAO Jianping, WANG Tieguan, ZHOU Yuqi, et al. The relationship between methyl phenanthrene ratios and the evolution of organic matter[J]. Journal of Jianghan Petroleum Institute, 1992, 14(4): 8-13. https://www.cnki.com.cn/Article/CJFDTOTAL-JHSX199204001.htm [35] HUGHES W B, HOLBA A G, DZOU L I P. The ratios of dibenzothiophene to phenanthrene and pristane to phytane as indicators of depositional environment and lithology of petroleum source rocks[J]. Geochimica et Cosmochimica Acta, 1995, 59(17): 3581-3598. [36] RADKE M, VRIEND S P, RAMANAMPISOA L R. Alkyldibenzofurans in terrestrial rocks: influence of organic facies and maturation[J]. Geochimica et Cosmochimica Acta, 2000, 64(2): 275-286. [37] 朱扬明, 周洁, 顾圣啸, 等. 西湖凹陷始新统平湖组煤系烃源岩分子地球化学特征[J]. 石油学报, 2012, 33(1): 32-39. https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB201201003.htmZHU Yangming, ZHOU Jie, GU Shengxiao, et al. Molecular geoche-mistry of Eocene Pinghu Formation coal-bearing source rocks in the Xihu Depression, East China Sea Shelf Basin[J]. Acta Petrolei Sinica, 2012, 33(1): 32-39. https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB201201003.htm