胜坨地区沙四上亚段物源体系分析
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摘要
物源问题的研究对于了解和确定研究区有利沉积相带及储集砂体的分布、寻找有利油气储集层具有重要意义。胜坨地区沙四上勘探程度相对较低,前人关于目的层段的物源体系的研究成果很少。为了进一步查清研究区沙四上沉积时期砂体成因和物源方向,更好地预测砂体的分布,本文综合运用地震、测井、地球化学等资料,采用古地貌分析法、沉积砂体岩屑类型对比法、砂岩百分含量法和沉积物特征元素等方法探讨了胜坨地区沙四上亚段砂体的物源方向,并结合特征元素物源指数判别公式对沙四上亚段物源体系实现了定量评价。综合分析认为研究区沙四上亚段具有多物源体系特征,除了直接来自于胜北断层和坨94断层上升盘的物源外,还有沿着胜北断层与坨94断层转换带处的物源体系。
The study of sediment source is significant in understanding and identifying favorable sedimentary facies belts and distribution of reservoir sands in the study area as well as in prospecting for favorable oil and gas reservoirs.Because the exploration extent of the 4th Member of Shahejie Formation is at a relatively low level in Shengtuo area,previous researches on the purpose layer sedimentary source system is very insufficient.The authors studied the source direction of the Upper 4th Member of Shahejie Formation in Shengtuo area in such aspects as palaeo-geomorphologic analysis,lithic fragment type of sediments,proportion of sandstone and characteristic element type,and distribution studies from seismic,logging and geochemical data.Combined with the source indexes of characteristic elements,the authors evaluated quantitatively the source system of the Upper 4th Member of Shahejie Formation in this area.According to the result,the authors point out that the source of the Upper 4th Member of Shahejie Formation was derived from the uplifted side directly as well as the source system from the accommodation zone of Shengbei and Tuo94 faults.Other sources came along the transfer zone of Shengbei and Tuo94 fault.
The study of sediment source is significant in understanding and identifying favorable sedimentary facies belts and distribution of reservoir sands in the study area as well as in prospecting for favorable oil and gas reservoirs.Because the exploration extent of the 4th Member of Shahejie Formation is at a relatively low level in Shengtuo area,previous researches on the purpose layer sedimentary source system is very insufficient.The authors studied the source direction of the Upper 4th Member of Shahejie Formation in Shengtuo area in such aspects as palaeo-geomorphologic analysis,lithic fragment type of sediments,proportion of sandstone and characteristic element type,and distribution studies from seismic,logging and geochemical data.Combined with the source indexes of characteristic elements,the authors evaluated quantitatively the source system of the Upper 4th Member of Shahejie Formation in this area.According to the result,the authors point out that the source of the Upper 4th Member of Shahejie Formation was derived from the uplifted side directly as well as the source system from the accommodation zone of Shengbei and Tuo94 faults.Other sources came along the transfer zone of Shengbei and Tuo94 fault.
引文
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[14]韩宗珠,李敏,李安龙,等.青岛田横岛北岸海滩沉积物稀土元素特征及物源判别[J].海洋湖沼通报,2010,3:131-136.Han Zongzhu,Li Min,Li Anlong,et al.REE characteristic andprovenance discrimination of sediments from beach north shore ofTianheng island in Qingdao[J].Transactions of Oceanology andLimnology,2010,3:131-136(in Chinese with English abstract).
[2]汪正江,陈洪德,张锦泉.物源分析的研究与展望[J].沉积与特提斯地质,2000,20(4):104-110.Wang Zhengjiang,Chen Hongde,Zhang Jinquan.Research andprospect of provenance analysis[J].Sedimentary Geology andTethyan Geology,2000,20(4):104-110(in Chinese with Englishabstract).
[3]赵红格,刘池洋.物源分析方法及研究进展[J].沉积学报,2003,21(3):409-415.Zhao Hongge,Liu Chiyang.Means and study progress ofprovenance analysis[J].Acta Sedimentologica Sinica,2003,21(3):409-415(in Chinese with English abstract).
[4]冯增昭.沉积岩石学[M].北京:石油工业出版社,1992:234-237.Feng Zengzhao.Sedimentary Petrology[M].Beijing:PetroleumIndustry Press,1992:234-237(in Chinese with English abstract).
[5]丁次乾.矿场地球物理[M].东营:石油大学出版社,1994:244-250.Ding Ciqian.Geophysical Well Testing[M].Dongying:Universityof Petroluem Press,1994:244-250(in Chinese with Englishabstract).
[6]杨江海,杜远生,徐亚军,等.砂岩的主量元素特征与盆地物源分析[J].中国地质,2007,34(6):1032-1041.Yang Jianghai,Du Yuansheng,Xu Yajun,et al.Major elementcharacteristics of sandstones and provenance analysis of basins[J].Geology in China,2007,34(6):1032-1044(in Chinese withEnglish abstract).
[7]陈庆春,吴智平,李伟.济阳坳陷稀土元素特征及其在物源对比中的应用[J].地质评论,2003,49(6):622-629.Chen Qingchun,Wu Zhiping,Li Wei.Geochemistry of rare earthelements and its application in the source identification in the JiyangDepression[J].Geology Review,2003,49(6):622-629(in Chinesewith English abstract).
[8]李丕龙.陆相断陷盆地油气地质与勘探[M].北京:石油工业出版社,2003:6-10.Li Pilong.Petroleum Geology and Exploration of Continental FaultBasin[M].Beijing:Petroleum Industry Press,2003:6-10(in Chinesewith English abstract).
[9]王爱萍,杨守业,李先从.南京地区下蜀土元素地球化学特征及物源判别[J].同济大学学报,2001,29(6):657-661.Wang Aiping,Yang Shouye,Li Congxian.elemental geochemistryof the Nanjin Xiashu Loess and the provenance study[J].Journal ofTonggi University,2001,29(6):657-661(in Chinese with Englishabstract).
[10]杨江海,杜远生,朱杰.甘肃景泰正路下志留统复理石杂砂岩沉积地球化学特征[J].地质科技情报,2006,25(5):27-31.Yang Jianghai,Du Yuansheng,Zhu Jie.Geochemical characteristicsof the lower Silurian flysch greywacke in Zhenglu,Jingtai County,Gansu Province[J]Geological Science and TechnologyInformation,2006,25(5):27-31(in Chinese with English abstract).
[11]陈衍景,杨忠芳.沉积物微量元素示踪物源区和地壳成分的研究方法和现状[J].地质地球化学,1996,15(3):7-11.Chen Yanjing,Yang Zhongfang.Methods and present ofsedimentary microelement directed to provenance and compositionof Earth crurst[J].Geology and Geochimica,1996,15(3):7-11(inChinese with English abstract).
[12]谢远云,何葵,周嘉,等.哈尔滨沙尘暴的化学特征及其物质源探讨[J].地理研究,2006,25(2):255-261.Xie Yuanyun,He Kui,Zhou Jia,et al.Chemical characteristic ofduststorm deposits in Harbin and its matter origin[J].GeographicalResearch,2006,25(2):255-261(in Chinese with English abstract).
[13]操应长,王艳忠,徐涛玉,等.特征元素比值在沉积物物源分析中的应用——以东营凹陷王58井区沙四上亚段研究为例[J].中国地质,2007,25(2):230-238.Cao Yingchang,Wang Yanzhong,Xu Taoyu,et al.Application ofthe ratio of characteristic elements in provenance analysis:a casestudy from the upper part of the fourthmember of the Shahejie Fm.in the W58 area,Dongying Depression[J].Acta SedimentologicaSinica,2007,25(2):230-238(in Chinese with English abstract).
[14]韩宗珠,李敏,李安龙,等.青岛田横岛北岸海滩沉积物稀土元素特征及物源判别[J].海洋湖沼通报,2010,3:131-136.Han Zongzhu,Li Min,Li Anlong,et al.REE characteristic andprovenance discrimination of sediments from beach north shore ofTianheng island in Qingdao[J].Transactions of Oceanology andLimnology,2010,3:131-136(in Chinese with English abstract).
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