Biomarker characteristics of Jurassic source rocks in Angdarco area in Qiangtang Basin and their significance
-
摘要: 以烃源岩抽提物的饱和烃色谱-质谱分析为基础,剖析了羌塘盆地昂达尔错地区3套主要烃源岩的生物标志物特征,探讨了其沉积环境和成熟度指示意义。研究表明:下侏罗统曲色组烃源岩具有较高的(C21+C22)/(C28+C29)、Ts/Tm、C31藿烷S/R及重排甾烷/规则甾烷比,以腐泥型、腐殖腐泥型海相有机质输入为主,呈成熟烃源岩特征;中侏罗统布曲组烃源岩以相对较低的Pr/Ph和C19/C23三环萜烷比区别于其他2套烃源岩,沉积于较强的海相还原环境,呈腐殖腐泥型、腐泥型有机质输入和低熟-成熟烃源岩特征;中侏罗统夏里组烃源岩沉积于低盐度海陆过渡环境,有机质类型以腐殖型和腐泥腐殖型为主,显示低成熟烃源岩特征。Abstract: The characteristics of biomarkers for three sets of main source rocks in Angdarco area of the Qiangtang Basin were studied, and the significance for sedimentary environment and thermal maturity was discussed, based on the analyses of saturated hydrocarbon chromatogram and mass spectrometry. Thermally mature source rocks from the Lower Jurassic Quse Formation have relatively higher ratios of (C21+C22)/(C28+C29), Ts/Tm, C31 homohopane S/R, and rearranged sterane/regular sterane. The main sources were sapropelic and humic-sapropelic marine organic matter. Source rocks from the Middle Jurassic Buqu Formation were deposited in a reducing environment, and were distinguished from the other two source rocks by relatively lower ratios of Pr/Ph and C19/C23 tricyclic terpane, which indicated sapropelic and humic-sapropelic organic matter inputs, at low mature to mature stage. Source rocks from the Middle Jurassic Xiali Formation were deposited in a marine-terrestrial transitional environment with a lower salinity, presenting humic and sapropelic-humic organic matter inputs, and low thermal maturity.
-
Key words:
- source rock /
- biomarker /
- Jurassic /
- Angdarco area /
- Qiangtang Basin
-
[1] 王成善,伊海生.西藏羌塘盆地地质演化与油气远景评价[M].北京:地质出版社,2001:184-215. Wang Chengshan,Yi Haisheng.Evaluating of geological evolution and oil-gas prospects for Qiangtang Basin[M].Beijing:Geolo-gical Publishing House,2001:184-215. [2] 赵政璋,李永铁,叶和飞,等.青藏高原羌塘盆地石油地质[M].北京:科学出版社,2000:356-367. Zhao Zhengzhang,Li Yongtie,Ye Hefei,et al.Petroleum geology of Qiangtang Basin in Qinghai-Tibet Plateau[M].Beijing:Science Press,2000:356-367. [3] 李亚林,王成善,伍新和,等.藏北托纳木地区发现上侏罗统海相油页岩[J].地质通报,2005,24(8):783-784. Li Yalin,Wang Chengshan,Wu Xinhe,et al.Discovery of Upper Jurassic marine oil shale in the Tuonamu area,northern Tibet,China[J].Geological Bulletin of China,2005,24(8):783-784. [4] 秦建中.青藏高原羌塘盆地海相烃源层的沉积形成环境[J].石油实验地质,2006,28(1):8-14. Qin Jianzhong.Depositional environment of the marine hydrocarbon source rock in the Qiangtang Basin,Qinghai-Tibet plateau[J].Petroleum Geology & Experiment,2006,28(1):8-14. [5] 任战利,崔军平,刘池洋,等.西藏羌塘盆地抬升冷却历史及意义[J].石油实验地质,2016,38(1):15-22. Ren Zhanli,Cui Junping,Liu Chiyang,et al.Uplift and cooling history of Qiangtang Basin and its significance[J].Petroleum Geology & Experiment,2016,38(1):15-22. [6] 卢明国,童小兰,王必金.藏北羌塘盆地油气勘探前景探讨[J].油气地质与采收率,2004,11(3):28-30. Lu Mingguo,Tong Xiaolan,Wang Bijin.Discussion on oil gas exploration prospects in the Qiangtang Basin in northern Tibet[J].Petroleum Geology and Recovery Efficiency,2004,11(3):28-30. [7] 刘建清,陈文斌,杨平,等.羌塘盆地中央隆起带南侧隆额尼-昂达尔错古油藏白云岩地球化学特征及成因意义[J].岩石学报,2008,24(6):1379-1389. Liu Jianqing,Chen Wenbing,Yang Ping,et al.The Longeni-Angdanrco paleo-oil dolomite geochemical characteristics in southern part of the central uplift zone of Qiangtang Basin and its significance[J].Acta Petrologica Sinica,2008,24(6):1379-1389. [8] 付修根,廖忠礼,刘建清,等.南羌塘盆地扎仁地区中侏罗统布曲组沉积环境特征及其对油气地质条件的控制作用[J].中国地质,2007,34(4):599-605. Fu Xiugen,Liao Zhongli,Liu Jianqing,et al.Sedimentary environment of the Middle Jurassic Bi Qu Formation and its controls on petroleum geology in the Zaring area,southern Qiangtang Basin[J].Geology in China,2007,34(4):599-605. [9] 赵政璋,李永铁,王岫岩,等.羌塘盆地南部海相侏罗系古油藏例析[J].海相油气地质,2002,7(3):34-36. Zhao Zhengzhang,Li Yongtie,Wang Xiuyan,et al.A case analysis of the Jurassic marine destroyed reservoirs in southern part of Qiangtang Basin,Qinghai-Tibet Plateau[J].Marine Origin Petroleum Geology,2002,7(3):34-36. [10] 王成善,伊海生,刘池洋,等.西藏羌塘盆地古油藏发现及其意义[J].石油与天然气地质,2004,25(2):139-143. Wang Chengshan,Yi Haisheng,Liu Chiyang,et al.Discovery of paleo-oil-reservoir in Qiangtang Basin in Tibet and its geological significance[J].Oil & Gas Geology,2004,25(2):139-143. [11] 伍新和,王成善,伊海生,等.西藏羌塘盆地烃源岩古油藏带及其油气勘探远景[J].石油学报,2005,26(1):13-17. Wu Xinhe,Wang Chengshan,Yi Haisheng,et al.Fossil-reservoir of hydrocarbon rock in Qiangtang Basin of Tibet and exploration perspective of oil and gas[J].Acta Petrolei Sinica,2005,26(1):13-17. [12] 汪双清,沈斌,龚迎莉,等.羌塘盆地中生代古油藏油源问题探讨[J].海相油气地质,2008,13(3):30-36. Wang Shuangqing,Shen Bin,Gong Yingli,et al.Where does the oil of Mesozoic paleoreservoirs in Qiangtang Basin derive from?[J].Marine Origin Petroleum Geology,2008,13(3):30-36. [13] 南征兵,李永铁,郭祖军.羌塘盆地油气显示及油源对比[J].石油实验地质,2008,30(5):503-507. Nan Zhengbing,Li Yongtie,Guo Zujun.Hydrocarbon show and correlation between oil and source rock in the Qiangtang Basin[J].Petroleum Geology & Experiment,2008,30(5):503-507. [14] 南征兵, 张艳玲, 李永铁, 等.羌塘盆地中侏罗统布曲组烃源岩评价[J].油气地质与采收率, 2012, 19(3):15-17, 21. Nan Zhengbing, Zhang Yanling, Li Yongtie, et al.Evaluation of middle Jurassic Buqu Formation source rock,Qiangtang Basin,north Tibet[J]. Petroleum Geology and Recovery Efficiency, 2012, 19(3):15-17, 21. [15] 陈文彬,廖忠礼,伊海生,等.南羌塘扎仁地区白云岩油苗芳烃地球化学特征[J].断块油气田,2010,17(6):694-697. Chen Wenbin,Liao Zhongli,Yi Haisheng.Aromatic geochemistry characteristics of dolomite oil seepage in Zaring Area of South Qiangtang Basin[J].Fault-Block Oil and Gas Field,2010,17(6):694-697. [16] 陈文彬,廖忠礼,刘建清,等. 羌塘盆地扎仁地区中上侏罗统烃源岩生物标志物特征[J].油气地质与采收率,2008, 15(5):17-19. Chen Wenbin,Liao Zhongli,Liu Jianqing,et al.The biomarkers characteristics of hydrocarbon source rocks in middle and upper Jurassic in Zharenarea,Qiangtang Basin[J].Petroleum Geology and Recovery Efficiency,2008, 15(5):17-19. [17] 杜佰伟,陈明,李忠雄,等.羌塘盆地龙尾湖地区中侏罗统布曲组烃源岩评价[J].油气地质与采收率,2010,17(1):45-47. Du Baiwei,Chen Ming,Li Zhongxiong,et al.Evaluation of source rocks in Buqu Formation,middle Jurassic,Longweihu area.Qiang-tang Basin[J].Petroleum Geology and Recovery Efficiency,2010,17(1):45-47. [18] 伍新和,张丽,王成善,等.西藏羌塘盆地中生界海相烃源岩特征[J].石油与天然气地质,2008,29(3):348-354. Wu Xinhe,Zhang Li,Wang Chengshan,et al.Characteristics of the Mesozoic marine source rocks in the Qiangtang Basin,Tibet[J].Oil & Gas Geology,2008,29(3):348-354. [19] 金玮,王成善,伍新和,等.羌塘盆地托纳木地区上侏罗统索瓦组烃源岩特征[J].油气地质与采收率,2006,13(6):40-42. Jin Wei,Wang Chengshan,Wu Xinhe,et al.Characteristics of hydrocarbon source rocks in the Upper Jurassic Suowa Formation in Tuonamuregion,Qiangtang Basin[J].Petroleum Geology and Recovery Efficiency,2006,13(6):40-42. [20] 陈文西,王剑.藏北羌塘盆地晚三叠世地层特征与对比[J].中国地质,2009,36(4):809-818. Chen Wenxi,Wang Jian.Correlation of Upper Triassic strata in Qiangtang Basin,northern Tibet[J].Geology in China,2009,36(4):809-818. [21] 黄继钧.藏北羌塘盆地构造特征及演化[J].中国区域地质,2001,20(2):178-186. Huang Jijun.Tectonic characteristics and evolution of the Qiangtang Basin[J].Regional geology of China,2001,20(2):178-186. [22] 杜佰伟,陈明.羌塘盆地上侏罗统索瓦组烃源岩分布特征及远景分析[J].石油实验地质,2008,30(2):174-178. Du Baiwei,Chen Ming.Characteristics of Upper Jurassic Suowa Formation source rock in the Qiangtang Basin of northern Tibet[J].Petroleum Geology & Experiment,2008,30(2):174-178. [23] 胡明毅,龚文平,文志刚,等.羌塘盆地三叠系、侏罗系石油地质特征和含油远景评价[J].石油实验地质,2000,22(3):245-249. Hu Mingyi,Gong Wenping,Wen Zhigang,et al.Petroleum geological characteristics and oil-prospect evaluation of the Triassic and the Jurassic in the Qiangtang Basin,Tibet[J].Experimental Petroleum Geology,2000,22(3):245-249. [24] 李忠雄,杜佰伟,汪正江,等.藏北羌塘盆地中侏罗统石油地质特征[J].石油学报,2008,29(6):797-803. Li Zhongxiong,Du Baiwei,Wang Zhengjiang,et al.Petroleum geologic characteristics of the Middle Jurassic strata in Qiangtang Basin of northern Xizang area[J].Acta Petrolei Sinica,2008,29(6):797-803. [25] 付修根,王剑,汪正江,等.藏北羌塘盆地海相油页岩沉积环境[J].新疆石油地质,2007,28(5):529-533. Fu Xiugen,Wang Jian,Wang Zhengjiang,et al.Marine oil shale depositional environment of Qiangtang Basin in northern Tibet[J].Xinjiang Petroleum Geology,2007,28(5):529-533. [26] 王剑,丁俊,王成善,等.青藏高原油气资源战略选区调查与评价[M].北京:地质出版社,2009:227-310. Wang Jian,Ding Jun,Wang Chengshan,et al.Investigation and evaluation of Qinghai-Tibet Plateau oil-gas resource strategic electoral district[M].Beijing:Geological Publishing House,2009:227-310. [27] Philipp C T.The influence of marine and terrestrial source material on the composition of petroleum[J].Geochimica et Cosmochimica Acta,1974,38(6):947-966. [28] Hunt J.Petroleum geochemistry and geology[M].2nd ed.New York:W.H. Freeman and Company,1996:743. [29] Hao Fang,Zhou Xinhuai,Zhu Yangming,et al.Mechanisms of petroleum accumulation in the Bozhong sub-basin,Bohai Bay Basin,China.Part 1:Origin and occurrence of crude oils[J].Marine and Petroleum Geology,2009,26(8):1528-1542. [30] Peters K E,Walters C C,Moldowan J M.The biomarker guide,volume 2:Biomarkers and isotopes in petroleum exploration and earth history[M].Cambridge:Cambridge University Press,2005:566-567. [31] Peters K E,Moldowan J M.The biomarker guide[M].Englewood Cliffs,New Jersey:Prentice Hall,1993:363. [32] Huang W Y,Meinschein W G.Sterols as ecological indicators[J].Geochimica et Cosmochimica Acta,1979,43(5):739-745.
点击查看大图
计量
- 文章访问数: 1021
- HTML全文浏览量: 43
- PDF下载量: 142
- 被引次数: 0