Organic geochemical characters of source rock and significance for exploration of the Tumuxiuke Formation in Fuman area, Tarim Basin
-
摘要:
塔里木盆地富满地区吐木休克组烃源岩作为近期勘探新发现的烃源岩层, 具有良好的油气勘探前景, 因此亟需对其进一步开展烃源岩地球化学评价, 以便更好地指导勘探。通过总有机碳含量、岩石热解测定以及饱和烃、芳烃色谱-质谱(GC-MS)等分析方法对富满地区吐木休克组黑色泥岩及灰色泥岩岩屑样品进行了定性和定量表征。研究结果表明, 吐木休克组烃源岩有机质丰度高, 均值为3.4%, 氢指数(
HI )最高可达到590 mg/g, 干酪根类型以Ⅱ型干酪根为主, 为一套好-极好的优质烃源岩。从分子地球化学特征来看, 烃源岩形成于弱还原偏咸水的海相沉积环境中, 以低等水生藻类作为主要成烃生物。基于热解峰温T max及饱和烃生物标志化合物和芳香烃热成熟度参数, 吐木休克组烃源岩总体处于低成熟-中等成熟阶段, 具有良好的生烃潜力。富满地区东南部区域作为环满坳陷西部斜坡区, 可能分布有更厚、更优的吐木休克组烃源岩, 且烃源岩可能已达到更高的热演化程度, 其对奥陶系油气资源的贡献不可忽视。Abstract:Objective As a newly discovered source rock in the Fuman area of the Tarim Basin, the source rock of the Tumuxiuke Formation has good petroleum exploration prospects, and the geochemical evaluation of the source rock is conducive to guiding exploration.
Methods The qualitative and quantitative characterization of drill cuttings from the Tumuxiuke Formation in the Fuman area was carried out by means of total organic carbon (TOC) content, Rock-Eval pyrolysis, and GC-MS analysis of saturated and aromatic hydrocarbons.
Results The results show that the source rock of the Tumuxiuke Formation is a good to excellentsource rock, with an average TOC content of 3.4%. The highest hydrogen index (HI) is 590 mg/g, and the kerogen type is mainly type Ⅱ. According to the molecular geochemical characteristics, the source rock was formed in a marine sedimentary environment with weakly reducing brackish water, with aquatic algae as the primary hydrocarbon-generating organisms.Based on the peak temperature (
T max) of Rock-Eval, saturated hydrocarbon biomarker compounds, and aromatic hydrocarbon thermal maturity parameters, the source rock of the Tumuxiuke Formation is generally in the mature-medium mature evolution stage and has good hydrocarbon generation potential.Conclusion As the sedimentary center of the Huanman Depression, the southern Fuman area may have thicker and higher-quality Tumuxiuke source rock with a greater degree of thermal evolution, whose contribution to the oil and gas resources in the Ordovician cannot be ignored.
-
Key words:
- Tarim Basin /
- Fuman area /
- Tumuxiuke Formation /
- source rock /
- organic geochemistry
-
表 1 富满地区吐木休克组(O3t)岩屑样品TOC和热解数据
Table 1. TOC and Rock-Eval data of drill cutting samples from the Tumuxiuke Formation in Fuman area
井号 深度/m 层位 岩性 w(TOC)/% Tmax/℃ S1/
(mg·g-1)S2/
(mg·g-1)PI HI/
(mg·g-1)So/
(mg·g-1)是否外源烃影响 FY204 7 147 O3t 黑色泥岩 2.91 446 1.47 9.71 0.13 334 50.52 无 FY206H 7 097 O3t 黑色泥岩 4.58 446 1.37 15.95 0.08 348 29.91 无 FY208 7 358 O3t 黑色泥岩 5.01 454 2.39 19.07 0.11 381 47.70 无 FY208 7 361 O3t 黑色泥岩 3.63 444 2.82 17.29 0.14 476 77.69 无 FY210-H4 7 409 O3t 灰色泥岩 0.37 435 0.14 0.27 0.34 73 37.84 有 FY210-H4 7 427 O3t 灰色泥岩 0.34 418 0.20 0.20 0.50 59 58.82 有 FY210-H4 7 438 O3t 灰色含泥灰岩 0.49 417 0.10 0.26 0.28 53 20.41 有 FY210-H4 7 440 O3t 黑色泥岩 4.27 432 0.97 1.05 0.48 250 22.72 有 LC2 7 311 O3t 黑色泥岩 3.32 445 1.65 14.24 0.10 429 49.70 无 LC4 7 308 O3t 黑色泥岩 1.77 441 1.24 10.50 0.11 593 70.06 无 MS2 7 415 O3t 灰色泥岩 0.55 436 0.13 0.85 0.13 155 23.64 有 MS2 7 446 O3t 灰色灰质泥岩 0.37 419 0.13 0.58 0.18 157 35.14 有 MS2 7 454 O3t 灰色灰质泥岩 0.21 428 0.11 0.57 0.16 271 52.38 有 MS3 7 513 O3t 灰色泥岩 0.62 438 0.15 0.48 0.24 77 24.19 有 MS3 7 535 O3t 灰色灰质泥岩 0.29 412 0.10 0.27 0.27 93 34.48 有 MS4 7 453 O3t 灰色泥岩 0.35 418 0.15 0.39 0.28 111 42.86 有 MS4 7 548 O3t 灰色灰质泥岩 0.69 413 0.33 0.66 0.33 96 47.83 有 MS4 7 557 O3t 灰色泥质灰岩 0.42 421 0.29 0.48 0.38 114 69.05 有 MS5-H6 7 614 O3t 灰色泥岩 0.17 443 0.12 0.18 0.40 106 70.59 有 MS5-H6 7 633 O3t 灰色泥岩 0.14 417 0.13 0.27 0.33 193 92.86 有 MS5-H6 7 639 O3t 灰色泥岩 0.08 423 0.13 0.19 0.41 238 162.52 有 MS7 7 809 O3t 黑色泥岩 5.95 449 1.87 7.76 0.19 130 31.43 无 MS7 7 810 O3t 黑色泥岩 5.6 443 1.36 7.13 0.16 127 24.29 无 MS7 7 811 O3t 黑色泥岩 2.78 460 0.95 3.68 0.21 132 34.17 无 MS72 7 646 O3t 灰色泥岩 0.51 417 0.17 0.45 0.27 89 34 有 MS72 7 647 O3t 灰色泥岩 0.47 419 0.17 0.44 0.28 94 36 有 MS72 7 648 O3t 灰色泥岩 0.56 430 0.21 0.46 0.31 82 37 有 MS72 7 649 O3t 灰色泥岩 0.98 407 0.14 0.98 0.13 100 14.29 有 MS72 7 650 O3t 灰色泥岩 0.75 433 0.35 0.35 0.70 93 47 有 MS72 7 651 O3t 黑色泥岩 3.82 450 1.62 4.58 0.26 120 42.41 无 MS72 7 652 O3t 黑色泥岩 4.64 445 1.39 5.39 0.21 116 29.96 无 MS72 7 653 O3t 黑色泥岩 4.41 448 1.78 5.01 0.26 114 40.36 无 MS72 7 654 O3t 黑色泥岩 2.56 435 1.51 3.10 0.33 121 14.97 有 MS72 7 656 O3t 黑色泥岩 1.57 437 0.88 2.37 0.27 151 17.24 无 MS72 7 657 O3t 黑色泥岩 1.61 443 0.96 2.91 0.25 180 19.91 无 MS72 7 658 O3t 黑色泥岩 1.44 441 0.89 2.46 0.27 170 19.26 无 MS72 7 659 O3t 黑色泥岩 0.84 439 0.41 1.10 0.27 131 14.93 无 MS72 7 660 O3t 黑色泥岩 1.40 432 0.76 1.70 0.31 122 14.62 有 MS72 7 661 O3t 黑色泥岩 0.60 420 0.32 0.61 0.34 102 12.97 有 MS72 7 662 O3t 灰色灰质泥岩 1.06 425 0.48 1.36 0.25 128 45 有 MS72 7 663 O3t 灰色灰质泥岩 0.56 420 0.28 0.53 0.35 94 50 有 MS501H 7 555 O3t 灰色泥岩 0.43 428 0.15 0.38 0.28 88 34.88 有 MS501H 7 598 O3t 褐色泥岩 0.16 402 0.09 0.15 0.38 94 56.25 有 MS501H 7 610 O3t 黑色泥岩 5.48 450 1.64 8.24 0.17 150 29.93 无 MS501H 7 611 O3t 黑色泥岩 5.67 452 1.39 6.16 0.18 109 24.51 无 MS502H 7 561 O3t 褐色泥岩 0.10 427 0.11 0.19 0.37 190 110.00 有 GL202H 7 424 O3t 灰色泥岩 0.50 415 0.30 0.55 0.35 110 60.00 有 GL202H 7 451 O3t 灰色灰质泥岩 0.20 421 0.31 0.59 0.34 295 155.00 有 GL301H 7 607 O3t 灰色泥岩 3.02 440 27.00 4.44 0.86 147 894.04 有 GL301H 7 608 O3t 灰色泥岩 5.16 435 30.04 7.04 0.88 136 969.77 有 GL305H 7 635 O3t 灰色泥岩 0.81 423 1.69 0.89 0.66 110 208.64 有 GL305H 7 665 O3t 褐色泥岩 0.30 436 0.26 0.82 0.24 273 86.67 有 YM5-4X 7 339 O3t 灰色灰质泥岩 0.01 437 0.24 0.36 0.40 360 2 400.00 有 YM23 7 445 O3t 灰色灰质泥岩 2.99 446 0.92 13.34 0.06 446 30.77 无 YM25 7 511 O3t 灰色泥岩 3.31 447 1.89 9.87 0.16 298 57.10 无 YM25-H1 7 533 O3t 灰色灰质泥岩 1.67 438 0.54 2.10 0.20 126 32.34 无 YM25-H1 7 537 O3t 灰色泥岩 1.85 447 1.13 5.88 0.16 318 61.08 无 YM25-H1 7 542 O3t 灰色泥岩 3.23 448 1.45 8.84 0.14 274 44.89 无 YM801 7 298 O3t 色泥质灰岩 0.25 426 0.17 0.36 0.32 144 68.00 有 注:w(TOC)=[0.83×(S0+S1+S2)+S4]/10;PI为生产指数,且PI=(S0+S1)/(S0+S1+S2);HI为氢指数,且HI=S2/w(TOC)×100%;So=S1/w(TOC);Tmax.最大热解峰温;So为油饱和度指数;S0为气态烃;S1为游离烃;S2为热解烃;S4为有机二氧化碳;下同 表 2 富满地区吐木休克组MS72井泥岩抽提物生物标志化合物参数
Table 2. Biomarker compound parameters of mudstone extracts from Well MS72 of the Tomuxiuke Formation in Fuman area
序号 深度/
mPr/
PhPr/
nC17Ph/
nC18nC21+/
nC22+(nC21+nC22)/
(nC28+nC29)(C28+C29)TT/
(C19+C20)TTC31H-
R/C30Hγ/
C31HC27S/
%C28S/
%C29S/
%ααα20R
C27S/C29SC29S20S/
(20S+20R)C29Sαββ/
(ααα+αββ)C24Tet/
C26TT1 7 651 0.78 0.14 0.20 5.79 6.01 0.52 0.28 0.97 2.80 41.42 55.78 0.05 0.02 0.64 0.61 2 7 652 0.82 0.12 0.17 4.51 5.13 0.69 0.28 0.79 32.76 26.51 40.73 0.80 0.43 0.51 0.87 3 7 653 0.80 0.13 0.17 4.10 5.76 0.71 0.22 1.24 43.84 24.75 31.40 1.40 0.40 0.46 0.57 4 7 654 0.99 0.15 0.17 4.60 4.92 0.45 0.27 0.97 44.12 24.04 31.84 1.39 0.41 0.48 2.55 5 7 656 0.87 0.16 0.19 3.58 4.42 0.81 0.27 0.89 32.59 29.89 37.52 0.87 0.39 0.47 0.67 6 7 657 0.85 0.17 0.20 3.05 3.94 0.88 0.29 0.83 48.30 23.56 28.13 1.72 0.41 0.49 0.46 注:Pr. 姥姣烷;Ph. 植烷;γ. 伽马蜡烷;TT. 三环萜烷;Tet. 四环萜烷;H. 藿烷;S. 甾烷; R. C31H的构型,下同 表 3 富满地区吐木休克组黑色泥岩芳烃参数
Table 3. Aromatic parameters of the black mudstone of the Tumushuk Formation in the Fuman area
序号 N P 联苯 屈 萤蒽 芘 ∑NPI MPI1 MPI2 Rc/% F1 F2 wB/% 1 21.63 42.46 10.90 2.42 2.59 6.13 0.51 0.29 0.19 0.57 0.52 0.27 2 35.65 31.01 15.73 1.57 1.84 4.35 1.15 0.26 0.16 0.55 0.52 0.27 3 34.74 35.13 11.44 1.35 2.49 5.81 0.99 0.27 0.17 0.56 0.52 0.27 4 38.21 33.13 10.61 1.45 2.17 5.02 1.15 0.27 0.17 0.56 0.53 0.27 5 29.76 39.59 10.72 1.75 2.55 6.09 0.75 0.27 0.17 0.56 0.53 0.28 6 24.88 43.86 9.27 2.21 2.98 7.00 0.57 0.28 0.18 0.57 0.53 0.27 注:N. 萘;P. 菲;∑NPI=∑N/∑P;MPI1=1.5(2-MP+3-MP)/(P+1-MP+9-MP);MPI2=3×(2-MP)/(P+1-MP+9-MP);Rc= 0.6×MPI1+0.4; F1=(2-MP+3-MP)/(2-MP+3-MP+1-MP+9-MP); F2=2-MP/(2-MP+3-MP+1-MP+9-MP);Rc.等效镜质体反射率;MP.甲基菲;MPI1和MPI2. 甲基菲指数; 1-MP.1-甲基菲; 2-MP.2-甲基菲; 3-MP.3-甲基菲; 9-MP.9-甲基菲,下同 -
[1] 梁狄刚. 塔里木盆地油气勘探若干地质问题[J]. 新疆石油地质, 1999, 20(3): 10-14. https://www.cnki.com.cn/Article/CJFDTOTAL-XJSD903.001.htmLIANG D G. Several geologic problems of oil and gas exploration in Tarim Basin[J]. Xinjiang Petroleum Geology, 1999, 20(3): 10-14. (in Chinese with English abstract) https://www.cnki.com.cn/Article/CJFDTOTAL-XJSD903.001.htm [2] ZHANG S C, HANSON A D, MOLDOWAN J M, et al. Paleozoic oil-source rock correlations in the Tarim Basin, NW China[J]. Organic Geochemistry, 2000, 31(4): 273-286. doi: 10.1016/S0146-6380(00)00003-6 [3] 王铁冠, 戴世峰, 李美俊, 等. 塔里木盆地台盆区地层有机质热史及其对区域地质演化研究的启迪[J]. 中国科学(地球科学), 2010, 40(10): 1331-1341. https://www.cnki.com.cn/Article/CJFDTOTAL-JDXK201010005.htmWANG T G, DAI S F, LI M J, et al. Stratigraphic thermos history and its implications for regional geoevolution in the Tarim Basin, NW China[J]. Science in China (Earth Sciences), 2010, 40(10): 1331-1341. (in Chinese with English abstract) https://www.cnki.com.cn/Article/CJFDTOTAL-JDXK201010005.htm [4] 宋到福, 王铁冠, 李美俊. 塔中地区中深1和中深1C井盐下寒武系油气地球化学特征及其油气源判识[J]. 中国科学(地球科学), 2016, 46(1): 107-117. https://www.cnki.com.cn/Article/CJFDTOTAL-JDXK201601010.htmSONG D F, WANG T G, LI M J. Geochemistry and possible origin of the hydrocarbons from Wells Zhongshen1 and Zhongshen1C, Tazhong Uplift[J]. Science in China (Earth Sciences), 2016, 46(1): 107-117. (in Chinese with English abstract) https://www.cnki.com.cn/Article/CJFDTOTAL-JDXK201601010.htm [5] 金之钧, 刘全有, 云金表, 等. 塔里木盆地环满加尔凹陷油气来源与勘探方向[J]. 中国科学(地球科学), 2017, 47(3): 310-320. https://www.cnki.com.cn/Article/CJFDTOTAL-JDXK201703004.htmJIN Z J, LIU Q Y, YUN J B, et al. Potential petroleum sources and exploration directions around the Manjar Sag in the Tarim Basin[J]. Science in China (Earth Sciences), 2017, 47(3): 310-320. (in Chinese with English abstract) https://www.cnki.com.cn/Article/CJFDTOTAL-JDXK201703004.htm [6] 王招明, 肖中尧. 塔里木盆地海相原油的油源问题的综合述评[J]. 科学通报, 2004, 49(增刊1): 1-8. https://www.cnki.com.cn/Article/CJFDTOTAL-KXTB2004S1000.htmWANG Z M, XIAO Z Y. A comprehensive review of oil source problem of marine oil in the Tarim Basin[J]. Chinese Science Bulletin, 2004, 49(S1): 1-8. (in Chinese with English abstract) https://www.cnki.com.cn/Article/CJFDTOTAL-KXTB2004S1000.htm [7] 张水昌, 张宝民, 王飞宇, 等. 中-上奥陶统: 塔里木盆地的主要油源层[J]. 海相油气地质, 2000, 5(增刊1): 16-22. https://www.cnki.com.cn/Article/CJFDTOTAL-HXYQ2000Z1008.htmZHANG S C, ZHANG B M, WANG F Y, et al. Middle-Upper Ordovician: The main oil source layer in Tarim Basin[J]. Marine Origin Petroleum Geology, 2000, 5(S1): 16-22. (in Chinese with English abstract) https://www.cnki.com.cn/Article/CJFDTOTAL-HXYQ2000Z1008.htm [8] LI M J, WANG T G, LILLIS P G, et al. The significance of 24-norcholestanes, triaromatic steroids and dinosteroids in oils and Cambrian-Ordovician source rocks from the cratonic region of the Tarim Basin, NW China[J]. Applied Geochemistry, 2012, 27(8): 1643-1654. [9] 王庭栋, 徐志明, 林峰. 轮南地区油气藏成藏机制研究[R]. 成都: 西南石油学院, 2002.WANG T D, XU Z M, LIN F. Study on hydrocarbon accumulation mechanism in Lunnan area[R]. Chengdu: Southwest Petroleum University, 2002. (in Chinese) [10] CAI C F, ZHANG C M, CAI L L, et al. Origins of Palaeozoic oils in the Tarim Basin: Evidence from sulfur isotopes and biomarkers[J]. Chemical Geology, 2009, 268(3/4): 197-210. [11] 李峰, 朱光有, 吕修祥, 等. 塔里木盆地古生界海相油气来源争议与寒武系主力烃源岩的确定[J]. 石油学报, 2021, 42(11): 1417-1436. https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB202111003.htmLI F, ZHU G Y, LÜ X X, et al. The disputes on the source of Paleozoic marine oil and gas and the determination of the Cambrian system as the main source rocks in Tarim Basin[J]. Acta Petrolei Sinica, 2021, 42(11): 1417-1436. (in Chinese with English abstract) https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB202111003.htm [12] 熊冉, 周进高, 倪新峰, 等. 塔里木盆地下寒武统玉尔吐斯组烃源岩分布预测及油气勘探的意义[J]. 天然气工业, 2015, 35(10): 49-56. https://cpfd.cnki.com.cn/Article/CPFDTOTAL-ZGKW201809001282.htmXIONG R, ZHOU J G, NI X F, et al. Distribution prediction of Lower Cambrian Yuertusi Formation source rocks and its significance to oil and gas exploration in the Tarim Basin[J]. Natural Gas Industry, 2015, 35(10): 49-56. (in Chinese with English abstract) https://cpfd.cnki.com.cn/Article/CPFDTOTAL-ZGKW201809001282.htm [13] 朱光有, 陈斐然, 陈志勇, 等. 塔里木盆地寒武系玉尔吐斯组优质烃源岩的发现及其基本特征[J]. 天然气地球科学, 2016, 27(1): 8-21. https://www.cnki.com.cn/Article/CJFDTOTAL-TDKX201601003.htmZHU G Y, CHEN F R, CHEN Z Y, et al. Discovery and basic characteristics of the high-quality source rocks of the Cambrian Yuertusi Formation in Tarim Basin[J]. Natural Gas Geoscience, 2016, 27(1): 8-21. (in Chinese with English abstract) https://www.cnki.com.cn/Article/CJFDTOTAL-TDKX201601003.htm [14] 朱光有, 胡剑风, 陈永权, 等. 塔里木盆地轮探1井下寒武统玉尔吐斯组烃源岩地球化学特征与形成环境[J]. 地质学报, 2022, 96(6): 2116-2130. https://www.cnki.com.cn/Article/CJFDTOTAL-DZXE202206014.htmZHU G Y, HU J F, CHEN Y Q, et al. Geochemical characteristics and formation environment of source rock of the Lower Cambrian Yuertusi Formation in Well Luntan 1 in Tarim Basin[J]. Acta Geologica Sinica, 2022, 96(6): 2116-2130. (in Chinese with English abstract) https://www.cnki.com.cn/Article/CJFDTOTAL-DZXE202206014.htm [15] 贾承造. 中国塔里木盆地构造特征与油气[M]. 北京: 石油工业出版社, 1997.JIA C Z. Structural characteristics and oil and gas in Tarim Basin, China[M]. Beijing: Petroleum Industry Press, 1997. (in Chinese) [16] 邬光辉, 邓卫, 黄少英, 等. 塔里木盆地构造-古地理演化[J]. 地质科学, 2020, 55(2): 305-321. https://www.cnki.com.cn/Article/CJFDTOTAL-DZKX202002001.htmWU G H, DENG W, HUANG S Y, et al. Tectonic-paleogeographic evolution in the Tarim Basin[J]. Chinese Journal of Geology (Scientia Geologica Sinica), 2020, 55(2): 305-321. (in Chinese with English abstract) https://www.cnki.com.cn/Article/CJFDTOTAL-DZKX202002001.htm [17] PETERS K E, MOLDOWAN J M. The biomarker guide: Interpreting molecular fossils in petroleum and ancient sediments[M]. Englewood Cliffs, N.J.: Prentice Hall, 1993. [18] HUNT J M. Petroleum geochemistry and geology[M]. New York: W.H. Freeman, 1996. [19] VECOLI M, RIBOULLEAU A, VERSTEEGH G J M. Palynology, organic geochemistry and carbon isotope analysis of a latest Ordovician through Silurian clastic succession from borehole Tt1, Ghadamis Basin, southern Tunisia, North Africa: Palaeoenvironmental interpretation[J]. Palaeogeography, Palaeoclimatology, Palaeoecology, 2009, 273(3/4): 378-394. [20] ESPITALIE J, MADEC M, TISSOT B, et al. Source rock characterization method for petroleum exploration[C]//Anon. Offshore Technology Conference. Houston, Texas: [s. n.], 1977. [21] 阳宏, 刘成林, 王飞龙, 等. 渤中凹陷西南洼东营组烃源岩地球化学特征及环境指示意义[J]. 地质科技通报, 2023, 42(1): 339-349. doi: 10.19509/j.cnki.dzkq.2021.0077YANG H, LIU C L, WANG F L, et al. Geochemical characteristics and environmental implications of source rocks of the Dongying Formation in Southwest Subsag of Bozhong Sag[J]. Bulletin of Geological Science and Technology, 2023, 42(1): 339-349. (in Chinese with English abstract) doi: 10.19509/j.cnki.dzkq.2021.0077 [22] 黄谦, 陈容涛, 彭晓波, 等. 渤海湾盆地渤中凹陷古近系烃源岩生物标志物特征及其地质意义[J]. 地质科技通报, 2022, 41(3): 180-192. doi: 10.19509/j.cnki.dzkq.2022.0085HUANG Q, CHEN R T, PENG X B, et al. Characteristics and geological significance of biomarkers from the Paleogene source rocks in Bozhong Sag, Bohai Bay Basin[J]. Bulletin of Geological Science and Technology, 2022, 41(3): 180-192. (in Chinese with English abstract) doi: 10.19509/j.cnki.dzkq.2022.0085 [23] 静禹钱, 雷闯, 刘克栋, 等. 南堡凹陷古近系沙河街组沉积环境和物源: 来自微量和稀土元素地球化学的证据[J]. 地质科技通报, 2023, 42(1): 350-359. doi: 10.19509/j.cnki.dzkq.2022.0131JING Y Q, LEI C, LIU K D, et al. Deposition environment and provenance of the Palaeogene Shahejie Formation in Nanpu Sag: Evidences from trace and rare earth element geochemistry[J]. Bulletin of Geological Science and Technology, 2023, 42(1): 350-359. (in Chinese with English abstract) doi: 10.19509/j.cnki.dzkq.2022.0131 [24] DIDYK B M, SIMONEIT B R T, BRASSELL S C, et al. Organic geochemical indicators of palaeoenvironmental conditions of sedimentation[J]. Nature, 1978, 272(5650): 216-222. [25] SINNINGHE DAMSTÉ J S, KENIG F, KOOPMANS M P, et al. Evidence for gammacerane as an indicator of water column stratification[J]. Geochimica et Cosmochimica Acta, 1995, 59(9): 1895-1900. [26] RADKE M. Application of aromatic compounds as maturity indicators in source rocks and crude oils[J]. Marine and Petroleum Geology, 1988, 5(3): 224-236. [27] KVALHEIM O M, CHRISTY A A, TELNAS N, et al. Maturity determination of organic matter in coals using the methylphenanthrene distribution[J]. Geochimica et Cosmochimica Acta, 1987, 51(7): 1883-1888. [28] 倪春华, 包建平, 梁世友. 渤海湾盆地渤中凹陷原油成熟度的多参数综合评价[J]. 石油实验地质, 2009, 31(4): 399-402. https://www.cnki.com.cn/Article/CJFDTOTAL-SYSD200904018.htmNI C H, BAO J P, LIANG S Y. Overall evaluation by multi-parameters on maturity of crude oil from the Bozhong Sag, the Bohai Bay Basin[J]. Petroleum Geology & Experiment, 2009, 31(4): 399-402. (in Chinese with English abstract) https://www.cnki.com.cn/Article/CJFDTOTAL-SYSD200904018.htm