桑植-石门复向斜及邻区古流体特征与油气保存意义

刘安; 危凯; 李旭兵; 王保忠; 王强

doi:10.11781/sysydz201506742

桑植-石门复向斜及邻区古流体特征与油气保存意义

doi: 10.11781/sysydz201506742

中国地质调查局武汉地质矿产研究所, 武汉 430205

基金项目: 中国地质调查局项目"武陵-湘鄂西页岩气资源调查评价"(12120114049801)、"桑植-石门及邻区油气地质综合调查研究"(1212011220745)资助。

详细信息

作者简介:
刘安(1981—),男,硕士,工程师,从事石油地质调查研究。E-mail:globstar@163.com

中图分类号: TE122.2
计量
- 文章访问数: 1058
- HTML全文浏览量: 69
- PDF下载量: 963
- 被引次数: 0
出版历程
- 收稿日期: 2014-08-29
- 修回日期: 2015-09-08
- 刊出日期: 2015-11-28

Paleo-fluid characteristics and preservation of hydrocarbons in the Sangzhi-Shimen synclinorium and adjacent areas

Wuhan Institute of Geology and Mineral Resources, China Geology Survey, Wuhan, Hubei 430205, China

摘要

摘要: 通过对桑植-石门复向斜及相邻地区震旦系-三叠系方解石脉和围岩的碳氧同位素、锶同位素对比,结合方解石脉中流体包裹体测试分析,研究了桑植-石门地区古流体特征及其油气保存意义。下古生界围岩⁸⁷Sr/⁸⁶Sr部分高于同期海水,也高于方解石脉,表明围岩在裂隙形成之前受到高⁸⁷Sr/⁸⁶Sr流体改造。桑植-石门复向斜北翼温泉附近的方解石脉体具高⁸⁷Sr/⁸⁶Sr、低δ¹³C、低δ¹⁸O特征,显示大气水参与了方解石脉沉淀,逆断层可能在形成之初就不具封闭性。流体包裹体盐度和均一温度指示,桑植-石门地区上寒武统娄山关组上覆盖层残余厚度小于3 km,不具封闭能力;中寒武统孔王溪组方解石脉流体包裹体高盐度表明膏盐盖层在研究区广泛分布,在埋深超过2 km条件下对下伏地层具有较好的封盖能力。桑植-石门复向斜田二垭、向家垭、车坊背斜圈闭、桥头、中坪隐伏圈闭保存条件较好,除田二垭背斜外,可以同时将震旦系灯影组、寒武系清虚洞组白云岩作为勘探目的层。
- 古流体 /
- 同位素 /
- 流体包裹体 /
- 保存条件 /
- 桑植-石门复向斜 /
- 中扬子区
Abstract: The paleo-fluid characteristics and hydrocarbon preservation in the Sangzhi-Shimen synclinorium and adjacent areas are discussed using comparisons of C, O, and Sr isotopes between the calcite veins and surrounding rocks in the Sinian and Triassic formations and combined with the tests of fluid inclusions in calcite veins. The ⁸⁷Sr/⁸⁶Sr values of surrounding rocks in the Lower Paleozoic are higher than those of contemporary seawater and calcite veins, which suggests that the surrounding rocks had been reformed by fluid with high ⁸⁷Sr/⁸⁶Sr values before fracturing. The calcite veins close to thermal springs in the north of Sangzhi-Shimen synclinorium have high ⁸⁷Sr/⁸⁶Sr values, low δ¹³C and low δ¹⁸O values, which can be explained by the mixing of meteoric water during calcite vein deposition and suggests that reverse faults might have been open when they were formed. The salinity and homogenization temperature of fluid inclusions shows that the residual cap formations above the Upper Cambrian Loushanguan Formation are less than 3 km thick with poor sealing capacity. The high salinity of calcite inclusions in the Middle Cambrian Kongwangxi Formation showed that gypsum salt cap layers are distributed widely in the study area, and the gypsum salt layers buried over 2 km deep have excellent sealing capacity. The preservation conditions of the Tianerya, Xiangjiaya, Chefang anticline traps, and the Qiaotou, Zhongping buried structural traps are favorable. The dolomites in the Sinian Dengying Formation and Cambrian Qingxudong Formation are exploration targets except for those in the Tianerya anticline.
- paleo-fluids /
- isotopes /
- fluid inclusions /
- preservation conditions /
- Sangzhi-Shimen synclinorium /
- middle Yangtze region

HTML全文

参考文献(35)

[1]	马永生,楼章华,郭彤楼,等.中国南方海相地层油气保存条件综合评价技术体系探讨[J].地质学报,2006,80(3):406-417. Ma Yongsheng,Lou Zhanghua,Guo Tonglou,et al.An exploration on a technological system of petroleum preservation evaluation for marine strata in South China[J].Acta Geologica Sinica,2006,80(3):406-417.
[2]	楼章华,马永生,郭彤楼,等.中国南方海相地层油气保存条件评价[J].天然气工业,2006,26(8):8-12. Lou Zhanghua,Ma Yongsheng,Guo Tonglou,et al.Evaluation of oil and gas preservation conditions in marine formation in South China[J].Natural Gas Industry,2006,26(8):8-12.
[3]	王国芝,刘树根.海相碳酸盐岩区油气保存条件的古流体地球化学评价:以四川盆地中部下组合为例[J].成都理工大学学报:自然科学版,2009,36(6):631-644. Wang Guozhi,Liu Shugen.Paleo-fluid geochemical evaluation of hydrocarbon preservation in marine carbonate rock areas:Taking lower association in central Sichuan Basin as an example[J].Journal of Chengdu University of Technology:Science & Technology Edition,2009,36(6):631-644.
[4]	李海,白云山,王保忠,等.湘鄂西地区下古生界页岩气保存条件[J].油气地质与采收率,2014,21(6):22-25. Li Hai, Bai Yunshan, Wang Baozhong, et al. Preservation conditions research on shale gas in the lower Paleozoic of western Hunan and Hubei area[J].Petroleum Geology and Recovery Efficiency,2014,21(6):22-25.
[5]	冯爱国,张建平,石元会,等.中扬子地区涪陵区块海相页岩气层特征[J].特种油气藏,2013,20(6):15-19. Feng Aiguo,Zhang Jianping,Shi Yuanhui,et al.Characteristics of marine shale gas play in fuling block in the Middle Yangtze area[J].Special Oil & Gas Reservoirs,2013,20(6):15-19.
[6]	李荣西,魏家庸,肖家飞,等.海进体系域碳氧同位素地球化学响应:以黔西南地区三叠系为例[J].地球科学与环境学报,2007,29(1):1-5. Li Rongxi,Wei Jiayong,Xiao Jiafei,et al.Response of carbon and oxygen isotopic geochemistry to transgressive systems tract:An example from Triassic stratigraphy in southwestern Guizhou Province[J].Journal of Earth Sciences and Environmen,2007,29(1):1-5.
[7]	李旭兵,陈绵琨,刘安,等.雪峰山西侧埃迪卡拉系陡山沱组页岩气成藏体系评价[J].石油实验地质,2014,36(2):188-193. Li Xubing,Chen Miankun,Liu An,et al.Evaluation of accumulation system for shale gas of Doushantuo Formation in western Xuefeng Mountain[J].Petroleum Geology & Experiment,2014,36(2):188-193.
[8]	杨建,王国芝,徐国盛,等.中扬子当阳复向斜带流体地球化学示踪及保存条件研究[J].矿物岩石,2010,30(4):95-101. Yang Jian,Wang Guozhi,Xu Guosheng,et al.Research on fluid geochemistry and condition of trace and hydrocarbon preservation in Dangyang synclinore, Central Yangtze[J].Journal of Mineralogy and Petrology,2010,30(4):95-101.
[9]	王芙蓉,何生,杨兴业.中扬子海相碳酸盐岩中方解石脉成岩环境研究[J].石油实验地质,2011,33(1):56-60,65. Wang Furong,He Sheng,Yang Xingye.Diagenetic environments of calcite veins hosted in marine carbonate rocks in middle Yangtze region of South China[J].Petroleum Geology & Experiment,2011,33(1):56-60,65.
[10]	王芙蓉,何生,杨兴业.方解石脉对中扬子地区沉湖土地堂复向斜油气保存单元的指示意义[J].矿物岩石,2012,32(1):94-100. Wang Furong,He Sheng,Yang Xingye.Indication of calcite vein characteristics on petroleum preservation in the Chenhutuditang syclinorium, middle Yangtze region, Southern China[J].Journal of Mineralogy and Petrology,2012,32(1):94-100.
[11]	杨兴业,何生,何治亮,等.京山地区方解石脉包裹体、同位素特征及古流体指示意义[J].中国石油大学学报:自然科学版,2013,37(1):19-26,34. Yang Xingye,He Sheng,He Zhiliang,et al.Characteristics and paleo-fluid activity implications of fluid-inclusion and isotope of calcite veins in Jingshan area[J].Journal of China University of Petroleum,2013,37(1):19-26,34.
[12]	Boles J R,Eichhubl P,Garven G,et al.Evolution of a hydrocarbon migration pathway along basin-bounding faults:Evidence from fault cement[J].AAPG Bulletin,2004,88(7):947-970.
[13]	Katz D A,Eberli G P,Swart P K,et al.Tectonic-hydrothermal brecciation associated with calcite precipitation and permeability destruction in Mississippian carbonate reservoirs, Montana and Wyoming[J].AAPG Bulletin,2006,90(11):1803-1841.
[14]	应维华,黄良汉.湘西北桑植-石门复向斜下古生界天然气保存条件研究[J].石油与天然气地质,1989,10(2):170-181. Ying Weihua,Huang Lianghan.Preservation condition of the lower Paleozoic natural gas in Shangzhi-Shimen synclinore, northwest Hunan[J].Oil & Gas Geology,1989,10(2):170-181.
[15]	胡晓凤,王韶华,盛贤才,等.中扬子区海相地层水化学特征与油气保存[J].石油天然气学报,2007,29(2):32-37. Hu Xiaofeng,Wang Shaohua,Sheng Xiancai,et al.Hydrochemical characteristics and hydrocarbon preservation of marine formation in middle Yangtze[J].Journal of Oil and Gas Technology,2007,29(2):32-37.
[16]	金之钧,龙胜祥,周雁,等.中国南方膏盐岩分布特征[J].石油与天然气地质,2006,27(5):571-583,593. Jin Zhijun,Long Shengxiang,Zhou Yan,et al.A study on the distribution of saline-deposit in southern China[J]. Oil & Gas Geology,2006,27(5):571-583,593.
[17]	金之钧,周雁,云金表,等.我国海相地层膏盐岩盖层分布与近期油气勘探方向[J].石油与天然气地质,2010,31(6):715-724. Jin Zhijun,Zhou Yan,Yun Jinbiao,et al.Distribution of gypsum-salt cap rocks and near-term hydrocarbon exploration targets in the marine sequences of China[J].Oil & Gas Geology,2010,31(6):715-724.
[18]	文志刚,杨申谷,李建明,等.桑植-石门复向斜成藏条件探讨[J].江汉石油学院学报,2003,25(4):21-23. Wen Zhigang,Yang Shengu,Li Jianming,et al.Shangzhi-Shimen synclinorium reservoir forming conditions[J].Journal of Jianghan Petroleum Institute,2003,25(4):21-23.
[19]	郭建华,朱美衡,刘辰生,等.湖南桑植-石门复向斜走廊剖面构造特征分析[J].大地构造与成矿学,2005,29(2):215-222. Guo Jianhua,Zhu Meiheng,Liu Chensheng,et al.Structural characteristics of the corridor section in Sangzhi-Shimen synclinore[J].Geotectonica et Metallogenia,2005,29(2):215-222.
[20]	陈荣坤.稳定氧碳同位素在碳酸盐岩成岩环境研究中的应用[J].沉积学报,1994,12(4):11-21. Chen Rongkun.Application of stable oxygen and carbon isotope in the research of carbonate diagenetic environment[J].Acta Sedimentologica Sinica,1994,12(4):11-21.
[21]	王大锐.油气稳定同位素地球化学[M].北京:石油工业出版社,2000:123-145. Wang Darui.Petroleum stable isotope[M].Beijing:Petroleum Industry Press,2000:123-145.
[22]	Keith M L,Weber J N.Carbon and oxygen isotopic composition of selected limestones and fossiles[J].Geochimica et Cosmochimica Acta,1964,28:1786-1816.
[23]	冯洪真,刘家润,施贵军.湖北宜昌地区寒武系-下奥陶统的碳氧同位素记录[J].高校地质学报,2000,6(1):106-115. Feng Hongzhen,Liu Jiarun,Shi Guijun.Records of carbon and oxygen isotopes from the Cambrian and Lower Ordovician carbonates in Yichang area, Hubei Province[J].Geological Journal of China Universities,2000,6(1):106-115.
[24]	左景勋,彭善池,朱学剑.扬子地台寒武系碳酸盐岩的碳同位素组成及地质意义[J].地球化学,2008,37(2):118-128. Zuo Jingxun,Peng Shanchi,Zhu Xuejian.Carbon isotope composition of Cambrian carbonate rocks in Yangtze platform, South China and its geological implications[J].Geochimica,2008,37(2):118-128.
[25]	Dogramaci S S,Herczeg A L. Strontium and carbon isotope constraints on carbonate-solution interactions and inter-aquifer mixing in groundwaters of the semi-arid Murray Basin, Australia[J].Journal of Hydrology,2002,262(1-4):50-67.
[26]	Veizer J,Ala D,Azmy K,et al.⁸⁷Sr/⁸⁶Sr, δ¹³C and δ¹⁸O evolution of Phanerozoic seawater[J].Chemical Geology,1999,161(1-3):59-88.
[27]	Sawaki Y,Tahata M,Ohno T,et al.The anomalous Ca cycle in the Ediacaran ocean:Evidence from Ca isotopes preserved in carbonates in the Three Gorges area, South China[J].Gondwana Research,2014,25(3):1070-1089.
[28]	黄思静,石和,毛晓东,等.重庆秀山寒武系锶同位素演化曲线及全球对比[J].地质论评,2002,48(5):509-516. Huang Sijing,Shi He,Mao Xiaodong,et al.Evolution of Sr isotope of the Cambrian sections in Xiushan, Chongqing, and related global correlation[J].Geological Review,2002,48(5):509-516.
[29]	张自超.我国某些元古宙及早寒武世碳酸盐岩石的锶同位素组成[J].地质论评,1995,41(4):349-354. Zhang Zichao.⁸⁷Sr/⁸⁶Sr data for some middle-late Proterozoic to early Cambrian carbonate rocks in China[J].Geological Review,1995,41(4):349-354.
[30]	薛钧月.龙门山构造带中-北段构造流体地球化学特征及其与成藏关系的探讨.成都:成都理工大学,2009:15-46. Xue Junyue.The geochemistry of tectonic fluids and a discussion on the hydrocarbon conservation in the central-northern section of Longmenshan Tectonic Belt, Western Sichuan, China.Chengdu:Chengdu University of Technology,2009:15-46.
[31]	郑荣才,彭军,高红灿,等.川西坳陷断裂活动期次、热流体性质和油气成藏过程分析[J].成都理工大学学报:自然科学版,2003,30(6):551-558. Zheng Rongcai,Peng Jun,Gao Hongcan,et al.Analysis of fracture active stages, heat fluid nature and the process of forming reservoir in Western Sichuan Sag[J].Journal of Chengdu University of Technology:Science & Technology Edition,2003,30(6):551-558.
[32]	陶士振.自生矿物序次是确定包裹体期次的根本依据[J].石油勘探与开发,2006,33(2):154-160. Tao Shizhen.Sequence of diagenetic authigenic mineral:The basis of timing the inclusions formation in sedimentary rocks[J].Petroleum Exploration and Development,2006,33(2):154-160.
[33]	郑冰.中扬子区多源、多期油气成藏地球化学研究.成都:成都理工大学,2008:30-111. Zheng Bing.Geochemical study of hydrocarbon accumulations with multiple sources and multiple generation stages in the middle Yangzi area.Chengdu:Chengdu University of Technology,2008:30-111.
[34]	周雁,金之钧,朱东亚,等.油气盖层研究现状与认识进展[J].石油实验地质,2012,34(3):234-245,251. Zhou Yan,Jin Zhijun,Zhu Dongya,et al.Current status and progress in research of hydrocarbon cap rocks[J].Petroleum Geology & Experiment,2012,34(3):234-245,251.
[35]	卓勤功,李勇,宋岩,等.塔里木盆地库车坳陷克拉苏构造带古近系膏盐岩盖层演化与圈闭有效性[J].石油实验地质,2013,35(1):42-47. Zhu Qingong,Li Yong,Song Yan,et al.Evolution of Paleogene saline deposits and effectiveness of traps in Kelasu tectonic zone, Kuqa Depression, Tarim Basin[J].Petroleum Geology & Experiment,2013,35(1):42-47.