东海丽水凹陷物源及其对储层物性影响

doi:10.11743/ogg20170515

摘要/Abstract

摘要： 为确定东海陆架盆地丽水凹陷物源并寻找有利储层发育区，通过碎屑锆石U-Pb定年分析丽水凹陷东、西次洼的物源及源区性质，在此基础上探讨不同物源对砂岩储层物性的影响。经分析，丽水西次洼物源主要来自凹陷西部的闽浙隆起区，以火山岩为主，含少量侵入岩及变质岩；该物源形成的砂岩塑性物质含量较高、岩石抗压性相对较弱，由压实作用造成的孔隙损失量相对较大。丽水东次洼物源主要来自凹陷东部的渔山隆起区，以沉积岩、侵入岩为主要物源；该物源形成的砂岩塑性物质含量较低、岩石抗压性较强，由压实作用造成的孔隙损失量相对较小。研究表明，物源差异对储层物性有较大的影响。

关键词: U-Pb定年, 碎屑锆石, 物源, 储层物性, 丽水凹陷, 东海陆架盆地

Abstract: In order to determine the provenance of sediments and play fairways in Lishui Sag,East China Sea Shelf Basin,we analyzed and characterized the provenances of the sediments in the sub-sags in eastern and western Lishui Sag through detrital zircon U-Pb dating and discussed the influences of different provenances on the physical properties of sandstone reservoirs in the Sag.The results show that sediments in the west sub-sag were mostly sourced from Minzhe Uplift Zone in the western part of the Sag where volcanic rocks are predominant with some intrusive and metamorphic rocks.The sandstone formed by sediments sourced from this provenance has high plastic content and low resistance to compaction,thus porosity loss is relatively largeduring compaction processes.The sediments in the east sub-sag were mostly sourced from Yushan Uplift Zone in the eastern part of the Sag where sedimentary rocks and intrusive rocks are predominant.The sandstone formed by sediments sourced from this provenance has low plastic content and strong resistance to compaction,thus porosity loss is relatively small during compaction.It is suggested that the provenance differences indeed have certain impact upon the physical properties of the reservoirs in the Sag.

Key words: U-Pb dating, detrital zircon, provenance, reservoir physical property, Lishui Sag, China East Sea Shelf Basin

中图分类号:

TE112

陈春峰,钟楷,朱伟林,等. 东海丽水凹陷物源及其对储层物性影响[J]. 石油与天然气地质, 2017, 38(5): 963-972. doi: 10.11743/ogg20170515 Chen Chunfeng,Zhong Kai,Zhu Weilin,et al. Provenance of sediments and its effects on reservoir physical properties in Lishui Sag,East China Sea Shelf Basin[J]. Oil & Gas Geology, 2017, 38(5): 963-972. doi: 10.11743/ogg20170515

参考文献

[1] Link P K,Fanning C M,Beranek L P.Reliability and longitudinal change of detrital-zircon age spectra in the Snake River system,Idaho and Wyoming:An example of reproducing the bumpy barcode[J].Sedimentary Geology,2005,182(1):101-142.
[2] Fedo C M,Sircombe K N,Rainbird R H.Detrital zircon analysis of the sedimentary record[J].Reviews in Mineralogy and Geochemistry,2003,53(1):277-303.
[3] 李瑞磊,朱建峰,刘玮,等.松辽盆地长岭断陷火山岩锆石U-Pb测年及其地质意义[J],石油与天然气地质,2015,36(5):736-744. Li Ruilei,Zhu Jianfeng,Liu Wei,et al.Zircon U-Pb dating of volcanic rocks of Changling Fault Depression in the southern Songliao Basin and its geological significance[J].Oil & Gas Geology,2015,36(5):736-744.
[4] Pittman E D,Larese R E.Compaction of lithic sands:Experimental results and applications[J].AAPG Bulletin,1991,75(8):1279-1299.
[5] 王洪建,吴小斌,孙卫,等.陇东地区延长组长3、长4+5储层物源及其对储层物性的影响[J].地球科学与环境学报,2008,30(1):38-43. Wang Hongjian,Wu Xiaobin,Sun Wei,et al.Provenance of Member 3 and Member 4+5 in Yanchang Formation of Longdong area in Ordos Basin[J].Journal of Earth Sciences and Environment,2008,30(1):38-43.
[6] 冯晓杰,蔡东升,王春修,等.东海陆架盆地中新生代构造演化特征[J].中国海上油气(地质),2003,17(1):33-37. Feng Xiaojie,Cai Dongsheng,Wang Chunxiu,et al.The Mesozoic-Cenozoic tectonic evolution in East China Sea shelf basin[J].China Offshore Oil and Gas (Geology),2003,17(1):33-37.
[7] 田兵,李小燕,庞国印,等.叠合断陷盆地沉积体系分析——以东海丽水-椒江凹陷为例[J].沉积学报,2012,30(4):696-705. Tian Bing,Li Xiaoyan,Pang Guoyin,et al.Sedimentary systems of the superimposed rift-subsidence basin:Taking Lishui-Jiaojiang sag of the East China Sea as an example[J].Acta Sedimentologica Sinica,2012,30(4):696-705.
[8] 陈国俊,李超,梁建设,等.东海陆架盆地瓯江凹陷明月峰组沉积相及沉积特征分析[J].天然气地球科学,2011,22(5):760-769. Chen Guojun,Li Chao,Liang Jianshe,et al.Sedimentary facies of Mingyuefeng Formation in Oujiang sag,East China Sea basin[J].Natural Gas Geoscience,2011,22(5):760-769.
[9] 浙江省地质矿产局.浙江省区域地质志[M].北京:地质出版社,1989:131-451. ZhejiangGeological Minerals Bureau.Regional geology of Zhejiang Province[M].Beijing:Geological Publishing House,1989:131-451
[10] 福建省地质矿产局.福建省区域地质志[M].北京:地质出版社,1985:134-418. Fujian Geological Minerals Bureau.Regional geology of Fujian Pro-vince[M].Beijing:Geological Publishing House,1985:134-418.
[11] Guo F,Fan W,Li C,et al.Multi-stage crust-mantle interaction in SE China:Temporal,thermal and compositional constraints from the Me-sozoic felsic volcanic rocks in eastern Guangdong-Fujian provinces[J].Lithos,2012,150:62-84.
[12] Li J,Zhang Y,Dong S,et al.Cretaceous tectonic evolution of South China:A preliminary synthesis[J].Earth-Science Reviews,2014,134:98-136.
[13] 赵磊.浙西南八都群早前寒武纪变质演化与年代学研究[D].北京:中国地质科学院,2012. Zhao Lei.Study on theEarly Precambrian metamorphic evolution and geochronology of the Badu Group in southwestern Zhejiang province[D].Beijing:Chinese Academy of Geological Sciences,2012.
[14] 向华,张利,周汉文,等.浙西南变质基底基性-超基性变质岩锆石U-Pb年龄、Hf同位素研究:华夏地块变质基底对华南印支期造山的响应[J].中国科学(D辑:地球科学),2008,38(4):401-413. Xiang Hua,Zhang Li,Zhou Hanwen,et al.U-Pb zircon geochrono-logy and Hf isotope study of metamorphosed basic-ultrabasic rocks from metamorphic basement in southwestern Zhejiang:The response of the Cathaysia Block to Indosinian orogenic event[J].Science in China (Series D:Earth Sciences),2008,38(4):401-413.
[15] Wan Y,Liu D,Xu M,et al.SHRIMP U-Pb zircon geochronology and geochemistry of metavolcanic and metasedimentary rocks in northwestern Fujian,Cathaysia Block,China:Tectonic implications and the need to redefine lithostratigraphic units[J].Gondwana Research,2007,12(1):166-183.
[16] 胡艳华,顾明光,徐岩,等.浙江诸暨地区陈蔡群加里东期变质年龄的确认及其地质意义[J].地质通报,2011,30(11):1661-1670. Hu Yanhua,Gu Mingguang,Xu Yan,et al.The confirmation of the age of Caledonian Chencai Group in Zhuji area of Zhejiang Province and its geological significance[J].Geological Bulletin of China,2011,30(11):1661-1670.
[17] 王长势,朱伟林,陈春峰,等.东海丽水-椒江新生代凹陷基底的岩性及分布[J].同济大学学报(自然科学版),2014,42(4):636-644. Wang Changshi,Zhu Weilin,Chen Chunfeng,et al.Basement lithology and distribution of Lishui-Jiaojiang Cenozoic Sag in East China Sea[J].Journal of Tongji University(Natural Science Edition),2014,42(4):636-644.
[18] 贺静,冯胜斌,黄静,等.物源对鄂尔多斯盆地中部延长组长6砂岩孔隙发育的控制作用[J].沉积学报,2011,29(1):80-87. He Jing,FengShengbin,Huang Jing,et al.Effects of provenance on porosity development of Chang 6 sandstone of the Yanchang Formation in the center of Ordos Basin[J].Acta Sedimentologica Sinica,2011,29(1):80-87.
[19] 王多云,郑希民,李风杰,等.低孔渗油气富集区优质储层形成条件及相关问题[J].天然气地球科学,2003,14(2):87-91. Wang Duoyun,Zheng Ximin,Li Fengjie,et al,Forming condition of high-quality reservoir and its relative problems in low porosity and permeability enrichment zone[J].Natural Gas Geoscience,2003,14(2):87-91.
[20] 张兴良,田景春,王峰,等.致密砂岩储层成岩作用特征与孔隙演化定量评价——以鄂尔多斯盆地高桥地区二叠系下石盒子组盒8段为例[J].石油与天然气地质,2014,35(2):212-217. Zhang Xingliang,Tian Jingchun,Wang Feng,et al. Diagenetic cha-racteristics and quantitative porosity estimation of tight sandstone reservoirs:A case from the 8th Member of Permian Xiashihezi Formation in the Gaoqiao region,Ordos Basin[J].Oil & Gas Geology,2014,35(2):212-217.
[21] 秦伟军,李娜,付兆辉.高邮凹陷深层系有效储层形成控制因素[J].石油与天然气地质,2015,36(5):788-792. Qin Weijun,Li Na,Fu Zhaohui.Factors controlling formation of effective reservoirs in deep of the Gaoyou Sag[J].Oil & Gas Geology,2015,36(5):788-792.
[22] 赵澄林,朱筱敏.沉积岩石学[M].北京:石油工业出版社,2001:125-137. Zhao Chenglin,Zhu Xiaomin.Sedimentary petrology[M].Beijing:Petroleum Industry Press,2001:125-137.
[23] 李继岩.渤海湾盆地东营凹陷东段红层储层成岩环境时空演化及成岩孔隙演化[J].石油与天然气地质,2017,38(1):90-97. Li Jiyan.Temporal spatial evolution of diagenetic environment and diagenesis pore evolutionary process of red beds in the eastern Dongying Sag,Bohai Bay Basin[J].Oil & Gas Geology,2017,38(1):90-97.
[24] 于兴河.碎屑岩系油气储层沉积学[M].北京:石油工业出版社,2002:87-98. Yu Xinghe.Petroleum reservoir sedimentology of clastic rocks[M].Beijing:Petroleum Industry Press,2002:87-98.
[25] 张永旺,曾溅辉,曲正阳,等.东营凹陷砂岩储层自生高岭石发育特征与成因机制[J].石油与天然气地质,2015,36(1):73-79. Zhang Yongwang,Zeng Jianhui,Qu Zhengyang,et al.Development characteristics and genetic mechanism of authigenic kaolinite in sandstone reservoirs of the Dongying Sag,Bohai Bay Basin[J].Oil & Gas Geology,2015,36(1):73-79.
[26] 周翔,何生,陈召佑,等.鄂尔多斯盆地代家坪地区延长组8段低孔渗砂岩成岩作用及成岩相.[J].石油与天然气地质,2016,37(2):155-164. Zhou Xiang,He Sheng,Chen Zhaoyou,et al.Diagenesis and diagene-tic facies of low porosity and permeability sandstone in Member 8 of the Yanchang Formation in Daijiaping area,Ordos Basin.[J].Oil & Gas Geology,2016,37(2):155-164.