天然气地质学

柴北缘九龙山地区侏罗系砂岩中碳酸盐胶结物特征及意义

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  • 1.甘肃省油气资源研究重点实验室/中国科学院油气资源研究重点实验室,甘肃 兰州 730000;2.中国石油青海油田公司勘探开发研究院,甘肃 敦煌 736202;
    3.中国石油测井青海事业部地质评价中心,甘肃 敦煌736202;
孙国强(1977-),男,河南洛阳人,副研究员,博士,主要从事含油气盆地石油地质学及沉积构造研究. E-mail:sguoqiang@lzb.ac.cn.

收稿日期: 2013-10-27

  修回日期: 2013-12-17

  网络出版日期: 2014-09-10

基金资助

中国科学院2012年度“西部之光”人才计划支持项目;甘肃省自然科学基金项目(编号:1308RJZA310);甘肃省重点实验室专项(编号:1309RTSA041)联合资助.
 

Characteristics and Significance of Carbon and Oxygen Isotopic Compositionsof Carbonate Cements in Jiulongshan Region,North Edge of Qaidam Basin

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  • (1.Key Laboratory of Petroleum Resources,Gansu Province/Key Laboratory of Petroleum Resources Research,
    Institute of Geology and Geophysics,Chinese Academy of Sciences,Lanzhou 730000,China;
    2.Exploratory Development Institute of Qinghai Petroleum Administration,Dunhuang 736202,China;
    3.Qinghai Division,China Petroleum Logging Co.Ltd.,Dunhuang 736202,China)

Received date: 2013-10-27

  Revised date: 2013-12-17

  Online published: 2014-09-10

摘要

综合运用岩石学、矿物学和地球化学等方法,对柴达木盆地北缘中段九龙山地区侏罗系砂岩中碳酸盐胶结物的成岩温度、形成环境和物质来源等进行了系统研究。结果表明,九龙山地区侏罗系砂岩中存在4种自生的碳酸盐胶结物类型:方解石、含铁方解石、白云石和铁白云石。测定其碳同位素(δ13C)值分布范围在-15.1‰~-1.3‰之间,平均值为-6.01‰;氧同位素(δ18O)值分布范围在-17.8‰~-11.2‰之间,平均值为-15.06‰,推算古盐度(Z)值分布范围为87.71~117.77,平均值为107.5。说明九龙山地区侏罗系砂岩在成岩阶段早期有少量有机碳的加入,且成岩流体主要是来自碎屑析水和大气中的淋滤淡水。碳酸盐胶结物的形成温度在78.5~126.55℃之间,平均值为105.86℃。根据成岩特征及形成温度说明侏罗系砂岩的埋藏深度应该大于2 500m,结合目前侏罗系的埋藏深度在1 600m左右,说明九龙山地区侏罗系砂岩在成岩过程中早期被深埋藏后,又经历了后期构造运动的强烈改造,被抬升1 000m左右。

本文引用格式

孙国强,王海峰,邹开真,王文卓,周刚,马进业,陈章群 . 柴北缘九龙山地区侏罗系砂岩中碳酸盐胶结物特征及意义[J]. 天然气地球科学, 2014 , 25(9) : 1358 -1365 . DOI: 10.11764/j.issn.1672-1926.2014.09.1358

Abstract

Based on the analyses of petrology,mineralogy and geochemistry,the depositional environment and origin of carbonate cements of Jurassic sandstones in Jiulongshan Region on the northern margin of the Qaidam Basin are studied.The experimental results demonstrate that there were four kinds of autogenic carbonate cements: calcite,iron-bearing calcite,dolomite and ankerite,whose carbon isotope (δ13C) ranged from -15.1‰ to -1.3‰ with an average value of -6.01‰,and oxygen isotope (δ18O) ranged from -17.8‰ to -11.2‰ with an average value of -15.06‰,and Z-value of paleosalinity ranged from 87.71 to 117.77 with an average value of 107.5.The above results showed that small amount of organic carbon involved in the early diagenesis of Jurassic sandstones in Jiulongshan Region,and diagenetic fluids were mainly leaching freshwater from clast and atmosphere.The temperature to form carbonate cements was 78.5-126.55℃ with an average value of 105.86℃.According to paleo-goethermal gradient,the burial depth of Jurassic sandstones should be about 2.5km,but the actual burial depth was less than 1.6km,so it was concluded that the Jurassic Formation in Jiulongshan region had experienced strong tectonic movement and were uplifted about 1.0km after deeply buried.
 

参考文献

[1]Boles J R.Carbonate cementation in tertiary sandstones,San Joaquin Basin,California[J].Special Publications of International Association of Sedimentolgists,1998,26:261-284.
[2]AntarA W,Earle F M.Origin of giant calcite cemented concretions,Temple Member,Qasr El Sagha Formation (Eocene),Faiyum Depression,Egypt[J].Journal of Sedimentary Research,2001,71(1):70-81.
[3]Sun Yushan,Shen Yinmin,Xu Xun,et al.Evaluating and predicting heterogeneous reservoirs and its oil-bearing properties by the analysis technique of the diagenetic lithofacies:Taking Hadexun area in Tarim Basin as an example[J].Acta Sedimentologica Sinica,2002,20(1):55-59.[孙玉善,申银民,徐迅,等.应用成岩岩相分析法评价和预测非均质性储层及其含油性——以塔里木盆地哈得逊地区为例[J].沉积学报,2002,20(1):55-59.]
[4]Carlos R,Rafaela M,Karl R,et al.Facies-related disgenesis and multiphase siderite cementation and dissolution in the reservoir sandstones of the Khatatba Formation,Egypt′s western desert[J].Journal of Sedimentary Research,2001,71(3):459-472.
[5]Macaula Y C I,Haszeldine R S,Fallick A E.Distribution,chemistry,isotopic composition and origin of diagenetic carbonates:Magnus sandstone,North Sea[J].Journal of Sedimentary Petrology,1993,63:33-43.
[6]Mostafa F,Harrison T M,Grove M.In situstable isotopic evidence for protracted and complex carbonate cementation in a petroleum reservoir,NorthColes Levee,San Joaquin Basin,California,USA[J].Journal of Sedimentary Research,2001,71(3):444-458.
[7]Friedman I,O’Neil J R.Complilation of stable isotope fractionation factors of geochemical interest[M]//Fleisher M.Data of Geochemistry.6th ed.Reston,Virginia:USGS,1977:60.
[8]Ortoleva P J.Basin Compartments and Seals[M].AAPG Memoir 61.Tulsa:AAPG,1994:477.
[9]Rosenbaum J M,Sheppard S M F.An isotopic study of siderites,dolomites,and ankerites at high temperature[J].Geochimica et Cosmochimica Acta,1986,50:1147-1150.
[10]Huang Sijing,Shi He,Zhang Meng,et al.Application of strontium isotope stratigraphy to diagenesis research[J].Acta Sedimentologica Sinica,2002,20(3):359-366.[黄思静,石和,张萌,等.锶同位素地层学在碎屑岩成岩研究中的应用[J].沉积学报,2002,20(3):359-366.]
[11]McBride E F,Parea G C.Origin of highly elongate,calcite-cemented concretions in some Italian coastal beach and dunesands[J].Journal of Sedimentary Research,2001,71(1):82-87.
[12]Wang Qi,Zhuo Xizhun,Chen Guojun,et al.Characteristics of carbon and oxygen isotopic compositions of carbonate cements in Triassic Yanchang sandstone in Ordos Basin[J].Natural Gas Industry,2007,27 (10):28-32.[王琪,禚喜准,陈国俊,等.延长组砂岩中碳酸盐胶结物氧碳同位素组成特征[J].天然气工业,2007,27(10):28-32.]
[13]Dong Fuxiang,Liu Li,Ma Yanping.Carbon & oxygen isotopes of calcite cement in the lower part of the Sha-1 formation,the Dagang beach area[J].Petroleum Geology & Experiment,2004,26(6):590-593.[董福湘,刘立,马艳萍.大港滩海地区沙一段下部砂岩储层中方解石胶结物碳氧同位素研究[J].石油实验地质,2004,26(6):590-593.]
[14]Sun Guoqiang,Si Dan,Wang Mu,et al.The tectonic kinematic process and the types of oil and gas reservoirs in northern margin of Qaidam Basin[J].Natural Gas Geoscience,2012,23(5):826-832.[孙国强,司丹,王牧,等.柴达木盆地北缘地区构造运动过程及油气藏类型[J].天然气地球科学,2012,23(5):826-832.]
[15]Fang Chaogang,Li Fengjie,Meng Lina,et al.Evalution of middled Jurassic hydrocarbon source rocks in Hongshan Sag,northern Qaidam Basin[J].Natural Gas Geoscience,2012,23(5):856-861.[方朝刚,李凤杰,孟立娜,等.柴达木盆地北缘红山断陷中侏罗统烃源岩评价[J].天然气地球科学,2012,23(5):856-861.]
[16]Wang Qi,Hao Lewei,Chen Guojun,et al.Forming mechanism of carbonate cements in siliciclastic sandstone of Zhuhai Formation in Baiyun Sag[J].Acta Petroleum Sinica,2010,31(4):554-560.[王琪,郝乐伟,陈国俊,等.白云凹陷珠海组砂岩中碳酸盐胶结物的形成机理[J].石油学报,2010,31(4):554-560.]
[17]Sun Guoqiang,Ma Jinye,Wang Haifeng,et al.Characteristics and significances of carbonate cements in northern Mahai region,northern margin of Qaidam Basin[J].Petroleum Geology & Experiment,2012,34(2):134-139.[孙国强,马进业,王海峰,等.柴达木盆地北缘马北地区碳酸盐胶结物特征及意义[J].石油实验地质,2012,34(2):134-139.]
[18]Fu Ling,Zhang Ziya,Zhang Daowei,et al.Difference between middle and Lower Jurassic source rocks in northern margin of Qaidam Basin and potential exploration significances[J].Natural Gas Geoscience,2010,21(2):218-223.[付玲,张子亚,张道伟,等.柴达木盆地北缘侏罗系烃源岩差异性研究及勘探意义[J].天然气地球科学,2010,21(2):218-223.]
[19]Wang Liqun,Xu Fengyin,Pang Xiongqi,et al.Potential exploration targets of the northern margin of Qaidam Basin suggested from the breakthrough of Mahai-Dahonggou Uplift[J].Acta Petrolei Sinica,2005,20(3):21-32.[汪立群,徐凤银,庞雄奇,等.马海—大红沟凸起油气勘探成果与柴达木盆地北缘的勘探方向[J].石油学报,2005,20(3):21-32.]
[20]Sun Zhixue,Sun Zhilei,Lu Hongjiang,et al.Characteristics of carbonate cements in sandstone reservoirs:A case from Yanchang Formation,middle and southern Ordos Basin,China[J].Petroleum Exploration and Development,2010,37(5):543-551.[孙致学,孙治雷,鲁洪江,等.砂岩储集层中碳酸盐胶结物特征——以鄂尔多斯盆地中南部延长组为例[J].石油勘探与开发,2010,37(5):543-551.]
[21]Cai Guanqiang,Guo Feng,Liu Xiantai,et al.Carbon and oxygen isotope characteristics and Palaeo environmental implications of lacustrine carbonate rocks from the Shahejie Formation in the Dongying Sag[J].Earth and Environment,2009,37(4):347-354.[蔡观强,郭锋,刘显太,等.东营凹陷沙河街组沉积岩碳氧同位素组成的古环境记录[J].地球与环境,2009,37(4):347-354.]
[22]Liu Deliang,Sun Xianru,Li Zhensheng,et al.Analysis of carbon and oxygen isotope on the ordovician dolostones in the Ordos Basin[J].Petroleum Geology & Experiment,2006,28(2):155-161.[刘德良,孙先如,李振生,等.鄂尔多斯盆地奥陶系白云岩碳氧同位素分析[J].石油实验地质,2006,28(2):155-161.]
[23]Zhang Jie,He Zhou,Xu Huaibao,et al.Petrological characteristics and origin of Permian Fengcheng Formation dolomitic rocks in Wuerhe-Fengcheng area,Junggar Basin[J].Acta Sedimentologica Sinica,2012,30(5):859-867.[张杰,何周,徐怀宝,等.乌尔禾—风城地区二叠系白云质岩类岩石学特征及成因分析[J].沉积学报,2012,30(5):859-867.]
[24]Hudson J D.Stable isotopes limestone lithification[J].Journal of Geological Society,1977,133(4):637-660.
[25]Suess E,Whiticar M J.Methane-derived CO2 in pore fluids expelled from the Oregon subduction zone[J].Palaeogeography,Palaeoclimatology,Palaeoecology,1989,71 (1-4):119-136.
[26]Surdam R C,Crossey L J,Hagen E S.Organic-inorganic interactions and sandstone diagenesis[J].AAPG Bulletin,1989,73:1-23.
[27]Keith M H,Weber J N.Isotopic composition and environmental classification of selected limestones and fossils[J].Geochimica et Cosmochimica Acta,1964,28:1787-1816.
[28]Zhang Xiulian.Relationship between carbon and oxygen stable isotope in carbonate rocks and paleosalinity and paleotemperature of seawater[J].Acta Sedimentologica Sinica,1985,3(4):17-28.[张秀莲.碳酸盐岩中氧、碳稳定同位素与古盐度、古水温的关系[J].沉积学报,1985,3(4):17-28.]
[29]Fu Qilong.Relationships between carbon and oxygen isotopic compositions and diagenetic environments of Lower Tertiary carbonate on the northwestern margin of Kuqa Basin,Xinjiang[J].Journal of Stratigraphy,1996,20(4):280-283.[傅启龙.库车盆地西北缘下第三系碳氧同位素特征及成岩环境[J].地层学杂志,1996,20(4):280-283.]
[30]Shao Longyi,Dou Jianwei,Zhang Pengfei.Paleogeographic significances of carbon and oxygen isotopes in Late Permian rocks of southwest China[J].Geochimica,1996,25 (6):575-580.[邵龙义,窦建伟,张鹏飞.西南地区晚二叠世氧、碳稳定同位素的古地埋意义[J].地球化学,1996,25(6):575-580.]
[31]Wang Darui.Geochemistry of Stable Isotopes in Oil and Gas[M].Beijing:Petroleum Industry Press,2000:137-196.[王大锐.油气稳定同位素地球化学[M].北京:石油工业出版社,2000:137-196.]
[32]Shackleton N J,Kennett J P.Paleotemperature history of the Cenozoic and the initiation of Antarctic glaciation:Oxygen and carbonisotope analysis in DSDP sites 277,279,and 281[J].Initial Reports of the Deep Sea Drilling Project,1975,29:743-755.
[33]Qiu Nansheng,Gu Xianjue,Ding Lihua,et al.Tectono-thermal evolution of western Qaidam Basin,northwest China[J].Scientia Geologica Sinica,2000,35(4):456-464.[邱楠生,顾先觉,丁丽华,等.柴达木盆地西部新生代的构造—热演化研究[J].地质科学,2000,35(4):456-464.]

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