塔中低凸起东部构造解析及勘探领域分析
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摘要
塔中低凸起是塔里木盆地重要的油气富集单元,其东部早期构造活跃,地质记录丰富,是认识塔中地区地质发育历史和油气成藏条件的窗口。利用钻井和地震资料,进行综合地质建模和构造反演,重建了塔中东部地区古生代构造沉积发育过程。研究表明在中奥陶世区域古隆起的基础上,晚奥陶世良里塔格组沉积期沿古隆起边缘发育台缘礁滩体,晚奥陶世末为构造定型期,塔中地区发生多次强烈的陆内挤压冲断变形,平衡剖面恢复得到塔中低凸起东部水平缩短量为4.5 km。受早期构造活动的影响,该区奥陶系碳酸盐岩储层的油气聚集主要受断裂和裂缝控制,良里塔格组台缘礁滩体是最有利的勘探领域,构造反演表明塔中I号断裂带下盘可能隐伏更大规模的台缘礁滩体,勘探潜力巨大。
In this paper,structural characteristics of eastern part of the central Tarim uplift controlled hydrocarbon accumulation.By data of balanced cross-section and drilled well,we recovered the integrated structural geometry model and each stage of structural deformation,and reconstructed Paleozoic structural-depositional evolution in the eastern part of central Tarim uplift.The platform edge reef flat body was formed along the brim of middle Ordovician palaeohigh in the late Ordovician Lianglitage depositional stage.Although structure feature was established at end of later Ordovician,several intensive intracontinent compaction and thrust deformation made balance section shorten 4.5m lengthen at eastern low bulge of central Tarim uplift.Under previous structural activity,petroleum accumulation in Ordovician reservoir was controlled by fault and fissure.The platform edge reef flat body in Lianglitage Formation is a profitable area of exploration.The structural recovery suggested that a larger size platform edge reef flat body would be existed under bottom wall of fault NO.1 of Tazhong as new area of exploration.
In this paper,structural characteristics of eastern part of the central Tarim uplift controlled hydrocarbon accumulation.By data of balanced cross-section and drilled well,we recovered the integrated structural geometry model and each stage of structural deformation,and reconstructed Paleozoic structural-depositional evolution in the eastern part of central Tarim uplift.The platform edge reef flat body was formed along the brim of middle Ordovician palaeohigh in the late Ordovician Lianglitage depositional stage.Although structure feature was established at end of later Ordovician,several intensive intracontinent compaction and thrust deformation made balance section shorten 4.5m lengthen at eastern low bulge of central Tarim uplift.Under previous structural activity,petroleum accumulation in Ordovician reservoir was controlled by fault and fissure.The platform edge reef flat body in Lianglitage Formation is a profitable area of exploration.The structural recovery suggested that a larger size platform edge reef flat body would be existed under bottom wall of fault NO.1 of Tazhong as new area of exploration.
引文
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[11]Guo Jianjun,Chen Jianfa,Duan Wenbiao.Origin of Ordoviciannatural gases in No.1 structural belt of Tazhong uplift,Tar-im basin[J].Natural Gas Geoscience,2007,18(6):793-797.[郭建军,陈践发,段文标,等.塔中I号构造带奥陶系天然气成因[J].天然气地球科学,2007,18(6):793-797.]
[12]Han Jianfa,Mei Lianfu,Yang Haijun,et al.The study of hydro-carbon origin,transport and accumulation in Tazhong area,Tarim basin[J].Natural Gas Geoscience,2007,18(3):426-435.[韩剑发,梅廉夫,杨海军,等.塔里木盆地塔中地区奥陶系碳酸盐岩礁滩复合体油气来源与运聚成藏研究[J].天然气地球科学,2007,18(3):426-435.]
[13]Zhou Xinyuan,Yang Haijun,Wu Guanghui,et al.The Experi-ences and targets for exploration of large oil-gas field in Tazhongarea,Tarim basin[J].Xinjiang Petroleum Geology,2009,4(2):149-151.[周新源,杨海军,邬光辉,等.塔中大油气田的勘探实践与勘探方向[J].新疆石油地质,2009,4(2):149-151.]
[14]Wang Hongbin,Zhang Huquan,Sun Dong,et al.Application ofintegrated seismic-geology prediction techniques to weatheringcrust karst reservoir—An example from lower Ordovician,north-ern slope of Tazhong area[J].Natural Gas Geoscience,2009,20(1):138-142.[王宏斌,张虎权,孙东,等.风化壳岩溶储层地质—地震综合预测技术与应用———以塔中北部斜坡带下奥陶统为例[J].天然气地球科学,2009,20(1):138-142.]
[15]Gong Honglin.Geophysical characteristics of Ordovician carbonaterock,central Tarim basin[J].Natural Gas Geoscience,2009,20(1):143-147.[龚洪林.塔中地区奥陶系碳酸盐岩岩石地球物理特征研究[J].天然气地球科学,2009,20(1):143-147.]
[2]Zhou Xinyuan,Wang Zhaoming,Yang Haijun,et al.Tazhong Or-dovician condensate field in Tarim basin[J].Marine OriginPetroleum Geology,2006,11(1):45-51.[周新源,王招明,杨海军,等.塔中奥陶系大型凝析气田的勘探和发现[J].海相油气地质,2006,11(1):45-51.]
[3]Jia Chengzao,Wei Guoqi,Yao Huijun,et al.Basin TectonicEvolution and Regional Structural Geology[M].Beijing:Pe-troleum Industry Press,1995:1-174.[贾承造,魏国齐,姚慧君,等.盆地构造演化与区域构造地质[M].北京:石油工业出版社,1995:1-174.]
[4]Jia Chengzao.Tectonic Characteristics and Oil&Gas of Tar-im Basin,China[M].Beijing:Petroleum Industry Press,1997:1-438.[贾承造.中国塔里木盆地构造特征与油气[M].北京:石油工业出版社,1997:1-438.]
[5]Tang Liangjie.Tarim Basin Evolution and Structural Models[M].Beijing:Geology Press,1996:1-136.[汤良杰.塔里木盆地演化与构造样式[M].北京:地质出版社,1996:1-136.]
[6]Wu Guanghui,Li Qiming,Zhang Baoshou,et al.Structuralcharacteristics and exploration fields of No.1 faulted slopebreak in Tazhong area[J].Acta Petrolei Sinica,2005,26(1):27-30.[邬光辉,李启明,张宝收,等.塔中I号断裂坡折带构造特征及勘探领域[J].石油学报,2005,26(1):27-30.]
[7]Zhao Zongju,Jia Chengzao,Zhou Xinyuan,et al.Key fac-tors of oil-gas reservoir-forming and exploration targets in Or-dovician in Tazhong area,Tarim basin[J].China PetroleumExploration,2006,(4):6-15.[赵宗举,贾承造,周新源,等.塔里木盆地塔中地区奥陶系油气成藏主控因素及勘探选区[J].中国石油勘探,2006,(4):6-15.]
[8]Miao Jijun,Jia Chengzao,Zou Caineng,et al.Characteristics andexploration fields of paleo-karst reservoirs at the top of earlyOrdovician in central Tarim uplift[J].Natural Gas Geosci-ence,2007,18(4):497-500.[苗继军,贾承造,邹才能,等.塔中地区下奥陶统岩溶风化壳储层特征与勘探领域[J].天然气地球科学,2007,18(4):497-500.]
[9]Wu Guanghui,Yue Guolin,Shi Jun,et al.Analysis of con-nectivity of fractures of Ordovician carbonates and its implica-tion in central Tarim basin[J].West China Petroleum Geo-sciences,2006,2(2):156-159.[邬光辉,岳国林,师骏,等.塔中奥陶系碳酸盐岩裂缝连通性分析及其意义[J].中国西部油气地质,2006,2(2):156-159.]
[10]Zhou Xinyuan,Wang Qinghua,Yang Wenjing,et al.The resourceand exploration of natural gas in Tarim basin[J].NaturalGas Geoscience,2005,16(1):7-12.[周新源,王清华,杨文静,等.塔里木盆地天然气资源及勘探方向[J].天然气地球科学,2005,16(1):7-12.]
[11]Guo Jianjun,Chen Jianfa,Duan Wenbiao.Origin of Ordoviciannatural gases in No.1 structural belt of Tazhong uplift,Tar-im basin[J].Natural Gas Geoscience,2007,18(6):793-797.[郭建军,陈践发,段文标,等.塔中I号构造带奥陶系天然气成因[J].天然气地球科学,2007,18(6):793-797.]
[12]Han Jianfa,Mei Lianfu,Yang Haijun,et al.The study of hydro-carbon origin,transport and accumulation in Tazhong area,Tarim basin[J].Natural Gas Geoscience,2007,18(3):426-435.[韩剑发,梅廉夫,杨海军,等.塔里木盆地塔中地区奥陶系碳酸盐岩礁滩复合体油气来源与运聚成藏研究[J].天然气地球科学,2007,18(3):426-435.]
[13]Zhou Xinyuan,Yang Haijun,Wu Guanghui,et al.The Experi-ences and targets for exploration of large oil-gas field in Tazhongarea,Tarim basin[J].Xinjiang Petroleum Geology,2009,4(2):149-151.[周新源,杨海军,邬光辉,等.塔中大油气田的勘探实践与勘探方向[J].新疆石油地质,2009,4(2):149-151.]
[14]Wang Hongbin,Zhang Huquan,Sun Dong,et al.Application ofintegrated seismic-geology prediction techniques to weatheringcrust karst reservoir—An example from lower Ordovician,north-ern slope of Tazhong area[J].Natural Gas Geoscience,2009,20(1):138-142.[王宏斌,张虎权,孙东,等.风化壳岩溶储层地质—地震综合预测技术与应用———以塔中北部斜坡带下奥陶统为例[J].天然气地球科学,2009,20(1):138-142.]
[15]Gong Honglin.Geophysical characteristics of Ordovician carbonaterock,central Tarim basin[J].Natural Gas Geoscience,2009,20(1):143-147.[龚洪林.塔中地区奥陶系碳酸盐岩岩石地球物理特征研究[J].天然气地球科学,2009,20(1):143-147.]
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