南海珠江口盆地东沙隆起区生物礁演化模式
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摘要
南海是西太平洋最大的边缘海,其在形成演化过程中出现了有利于生物礁生长发育的环境。东沙隆起在中新世时期属于浅海环境,远离物源区,温度、盐度和水深适宜生物礁的生长和发育。通过地震资料的解释、测井、岩心资料的综合分析,并与相对海平面变化曲线对比,认为东沙隆起发育大量规模不等的生物礁,且其发育演化与相对海平面变化曲线和区域构造演化阶段可以对应起来。相对海平面的旋回性变化和复杂的构造演化过程结合,使得研究区生物礁具有较好的孔渗性,可以成为有潜力的油气储层。
The South China Sea is the biggest marginal sea in the West Pacific.The environmental conditions are favorable there to the growth of reefs.The Dongsha uplift was a shallow water area far from provenance in the Miocene.The marine conditions including temperature,salinity and water depth were excellent for reef growth.Base on the integrated study of seismic,well logging and core data,and taking into account of relative sea level changes,we believe that there were plenty of reefs developed in different horizons in the Dongsha area,due to the complicated cooperation of relative sea level change and regional tectonic evolution,which made the reef rocks good reservoir with high porosity and permeability.
The South China Sea is the biggest marginal sea in the West Pacific.The environmental conditions are favorable there to the growth of reefs.The Dongsha uplift was a shallow water area far from provenance in the Miocene.The marine conditions including temperature,salinity and water depth were excellent for reef growth.Base on the integrated study of seismic,well logging and core data,and taking into account of relative sea level changes,we believe that there were plenty of reefs developed in different horizons in the Dongsha area,due to the complicated cooperation of relative sea level change and regional tectonic evolution,which made the reef rocks good reservoir with high porosity and permeability.
引文
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[11]魏喜,祝永军,尹继红,等.南海盆地生物礁形成条件及发育趋势[J].特种油气藏,2006,13(1):10-15.[WEI Xi,ZHUYongjun,YIN Jihong,et al.Constrains and growing trend ofbiological reef in South China Sea Basin[J].Special Oil&Gas Reservoirs,2006,13(1):10-15.]
[12]陈国威.南海生物礁及礁油气藏形成的基本特征[J].海洋地质动态,2003,19(8):32-37.[CHEN Guowei.Basic Charac-teristics of formation of bioherm and reef oil-gas ploos in theSouth China Sea[J].Marine Geology Letters,2003,19(8):32-37.]
[13]朱伟林,张功成,高乐.南海北部大陆边缘盆地油气地质特征与勘探方向[J].2008,29(1):1-9.[ZHU Weilin,ZHANGGongcheng,GAO Le.Geological characteristics and explora-tion objectives of hydrocarbons in the northern continentalmargin basin of South China Sea[J].Acta Petrolei Sinica,2008,29(1):1-9.]
[2]祝彦贺,朱伟林,徐强,等.珠江口盆地中部珠海组—珠江层序结构及沉积特征[J].海洋地质与第四纪地质,2009.29(4):77-83.[ZHU Yanhe,ZHU Weilin,XU Qiang,et al.Sedimentaryscharacteristics and sequence framework of the zhuhai-zhujiangformation in the middle area of pearl river mouth basin[J].Ma-rine Geology&Qliaternary Geology,2009,29(4):77-83.]
[3]何炎,胡平忠.南海东沙隆起早中新世生物礁中的大有孔虫[J].古生物学报,1995,34(1):19-43.[HE Yan,HU Ping-zhong.Early Miocene large foraminifera from biogenetic reef海洋地质与第四纪地质complexes of Dongsha Massif,South China Sea[J].Actapalaeontologica sinica,1995,34(1):19-43.]
[4]吕炳全,徐国强,王红罡,等.南海新生代碳酸盐台地淹没事件记录的海底扩张[J].地质科学,2002,37(4):405-414.[LUBingquan XU Guoqiang WANG Honggang,et al.Sea floorspreading recorded by drowning events of Cenozoic carbonateplatforms in the South China Sea[J].Scientia Geologica Sini-ca,2002,37(4):405-414.]
[5]Zampetti V,Sattler U,Braaksma H.Well log and seismiccharacter of Liuhua 11-1Field,South China Sea;relationshipbetween diagenesis and seismic reflections[J].Sedimentary Ge-ology,2005,175:217 236.
[6]Ute Sattler,Adrian Immenhauser,Wolfgang Schlager,Valen-tina Zampetti.Drowning history of a Miocene carbonate plat-form(Zhujiang Formation,South China Sea)[J].SedimentaryGeology,2009,219:318 331.
[7]Sattler U,Zampetti V,Schlager W,Immenhauser A.Lateleaching under deep burial conditions:a case study from theMiocene Zhujiang Carbonate Reservoir,South China Sea[J].Marine and Petroleum Geology,2004,21:977–992.
[8]刘军,施和生,杜家元,等.东沙隆起台地生物礁、滩油藏成藏条件及勘探思路探讨[J].热带海洋学报,2007,26(1):22-27.[LIU Jun,SHI Hesheng,DU Jiayuan,et al.Forming condi-tions and exploration direction of reef oil gas pool in carbonateplatform of Dongsha Massif[J].Journal of Tropical Oceanog-raphy,2007,26(1):22-27.]
[9]邱燕,王英民.南海第三纪生物礁分布与古构造和古环境[J].海洋地质与第四纪地质,2001,21(1):65-73.[QIU Yan,WANG Yingmin.Reefs and paleostructure and paleoenviron-ment in the South China Sea[J].Marine Geology&Quaternary Geology,2001,21(1):65-73.]
[10]魏喜,邓晋福,谢文彦,等.南海盆地演化对生物礁的控制及礁油气勘探潜力分析[J].地学前缘,2005,12(3):245-252.[WEI Xi,DENG Jinfu,XIE Wenyan,et al.Constraints onbiogenetic reef formation during evolution of the South ChinaSea and exploration potential analysis[J].Earth Science Fron-tiers,2005,12(3):245-252.]
[11]魏喜,祝永军,尹继红,等.南海盆地生物礁形成条件及发育趋势[J].特种油气藏,2006,13(1):10-15.[WEI Xi,ZHUYongjun,YIN Jihong,et al.Constrains and growing trend ofbiological reef in South China Sea Basin[J].Special Oil&Gas Reservoirs,2006,13(1):10-15.]
[12]陈国威.南海生物礁及礁油气藏形成的基本特征[J].海洋地质动态,2003,19(8):32-37.[CHEN Guowei.Basic Charac-teristics of formation of bioherm and reef oil-gas ploos in theSouth China Sea[J].Marine Geology Letters,2003,19(8):32-37.]
[13]朱伟林,张功成,高乐.南海北部大陆边缘盆地油气地质特征与勘探方向[J].2008,29(1):1-9.[ZHU Weilin,ZHANGGongcheng,GAO Le.Geological characteristics and explora-tion objectives of hydrocarbons in the northern continentalmargin basin of South China Sea[J].Acta Petrolei Sinica,2008,29(1):1-9.]
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