塔里木盆地顺托果勒低隆起一间房组分布及地质意义
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摘要
在塔里木盆地顺托果勒低隆起相关钻井中获得了中奥陶世达瑞威尔期牙形石化石,由老到新分别为Eoplacognathus suecicus、Pygodus anitae和Pygodus serrus组合,为该区主要目的层之一的一间房组划分对比提供了较为详细的标准生物化石依据。同时,综合碳同位素地层、岩电特征和地震等资料,讨论了一间房组地层发育特征。在此基础上,通过连井地层划分对比和地震层位解释追踪,厘定了一间房组的分布范围。研究认为,一间房组在顺托果勒低隆起广泛分布,厚度为140~220 m,SN1-ST1井区厚度最大,超过了200 m。研究区一间房组—恰尔巴克组之间为连续沉积,不存在剥蚀不整合面,不具备发育加里东中期古喀斯特的地质条件。
The Middle Ordovician Darriwilian stage conodonts have been recovered from key wells in the Shuntuoguole lower uplift,Tarim Basin. They are Eoplacognathus suecicus,Pygodus anitae and Pygodus serrus in ascending order. These fossil provide the basis for the division and correlation of the Yijianfang Formation which is one of the main exploration targets. The characteristics of the Yijianfang Formation were analyzed based on isotopic stratigraphy,lithologic and petrophysical features and seismic data at the same time. On this basis,the distribution of the Yijianfang Formation in this district was analyzed through the comparison of the stratigraphic division,precise tracking and interpretation of seismic horizons. This formation is widely distributed in the Shuntuoguole lower uplift,with a thickness of 140-220 m. It has the largest thickness( > 200 m) in the SN1 to ST1 well area. There is no erosion unconformity between the Yijianfang Formation and the Qiaerbake Formation,which did not allow the development of paleo karst in the Middle Caledonian.
The Middle Ordovician Darriwilian stage conodonts have been recovered from key wells in the Shuntuoguole lower uplift,Tarim Basin. They are Eoplacognathus suecicus,Pygodus anitae and Pygodus serrus in ascending order. These fossil provide the basis for the division and correlation of the Yijianfang Formation which is one of the main exploration targets. The characteristics of the Yijianfang Formation were analyzed based on isotopic stratigraphy,lithologic and petrophysical features and seismic data at the same time. On this basis,the distribution of the Yijianfang Formation in this district was analyzed through the comparison of the stratigraphic division,precise tracking and interpretation of seismic horizons. This formation is widely distributed in the Shuntuoguole lower uplift,with a thickness of 140-220 m. It has the largest thickness( > 200 m) in the SN1 to ST1 well area. There is no erosion unconformity between the Yijianfang Formation and the Qiaerbake Formation,which did not allow the development of paleo karst in the Middle Caledonian.
引文
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[2]赵宗举,赵治信,黄智斌.塔里木盆地奥陶系牙形石带及沉积层序[J].地层学杂志,2006,30(3):193-203.ZHAO Zongju,ZHAO Zhixin,HUANG Zhibin.Ordovician conodont zones and sedimentary sequences of the Tarim Basin,Xinjiang,NW China[J].Journal of Stratigraphy,2006,30(3):193-203.
[3]李越,黄智斌,王建坡,等.新疆巴楚中—晚奥陶世牙形刺生物地层和沉积环境研究[J].地层学杂志,2009,33(2):113-122.LI Yue,HUANG Zhibin,WANG Jianpo,et al.Conodont biostratigraphy and sedimentology of the middle and upper Ordovician in Bachu,Xinjiang[J].Journal of Stratigraphy,2009,33(2):113-122.
[4]熊剑飞,武涛,叶德胜.新疆巴楚中—晚奥陶世牙形刺研究的新进展[J].古生物学报,2006,45(3):359-373.XIONG Jianfei,WU Tao,YE Desheng.New Advances on the study of middle-late Ordovician conodonts in Bachu,Xinjiang[J].Acta Palaeontologica Sinica,2006,45(3):359-373.
[5]张恒,蔡忠贤,漆立新,等.塔中隆起西北部中奥陶统一间房组地层识别对比及地质意义[J].石油学报,2017,38(6):622-635.ZHANG Heng,CAI Zhongxian,QI Lixin,et al.Stratigraphic recognition and correlation of middle Ordovician Yijianfang Formation in northwestern Tazhong uplift and its geological significances[J].Acta Petrolei Sinica,2017,38(6):622-635.
[6]张正红,赵治信,潘文庆,等.塔中北斜坡中奥陶统一间房组划分对比及分布[J].地层学杂志,2015,39(3):274-282.ZHANG Zhenghong,ZHAO Zhixin,PAN Wenqing,et al.The division and distribution of the Yijianfang Formation in the north slope of the Tazhong uplift[J].Journal of Stratigraphy,2015,39(3):274-282.
[7]张智礼,李慧莉,熊平,等.塔中北坡中奥陶统一间房组碳同位素地层学研究[J].中国地质,2016,43(2):638-649.ZHANG Zhili,LI Huili,XIONG Ping,et al.A study of carbon isotope stratigraphy of the Middle Ordovician Yijianfang Formation on the north slope of Tazhong area[J].Geology in China,2016,43(2):638-649.
[8]漆立新.塔里木盆地顺托果勒隆起奥陶系碳酸盐岩超深层油气突破及其意义[J].中国石油勘探,2016,21(3):38-51.QI Lixin.Oil and gas breakthrough in ultra-deep Ordovician carbonate formations in Shuntuoguole uplift,Tarim Basin[J].China Petroleum Exploration,2016,21(3):38-51.
[9]云露,曹自成.塔里木盆地顺南地区奥陶系油气富集与勘探潜力[J].石油与天然气地质,2014,35(6):788-797.YUN Lu,CAO Zicheng.Hydrocarbon enrichment pattern and exploration potential of the Ordovician in Shunnan area,Tarim Basin[J].Oil&Gas Geology,2014,35(6):788-797.
[10]蔡习尧,钱一雄,陈强路,等.塔里木盆地古隆1井奥陶系恰尔巴克组与一间房组的发现及意义[J].石油实验地质,2011,33(4):348-352.CAI Xiyao,QIAN Yixiong,CHEN Qianglu,et al.Discovery and significance of Qrebake and Yijianfang Fomations of Ordovician in well GL1,Tarim Basin[J].Petroleum Geology&Experiment,2011,33(4):348-352.
[11]张智礼,李慧莉,谭广辉,等.塔里木中央隆起区奥陶纪碳同位素特征及其地层意义[J].地层学杂志,2014,38(2):181-189.ZHANG Zhili,LI Huili,TAN Guanghui,et al.Carbon isotope chemostratigraphy of the Ordovician system in Central uplift of the Tarim Basin[J].Journal of Stratigraphy,2014,38(2):181-189.
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[15]王志浩,伯格斯特龙S M.华南奥陶系达瑞威尔阶底界附近的牙形刺[J].微体古生物学报,1999,16(4):325-350.WANG Zhihao,BERGSTROM S M.Conodonts across the base of the Darriwilian stage in South China[J].Acta Micropalaeontologica Sinica,1999,16(4):325-350.
[16]赵宗举.全球海平面变化指标及海相构造层序研究方法:以塔里木盆地奥陶系为例[J].石油学报,2015,36(3):262-273.ZHAO Zongju.Indicators of global sea-level change and research methods of marine tectonic sequences:Take Ordovician of Tarim Basin as an example[J].Acta Petrolei Sinica,2015,36(3):262-273.
[17]张君龙.碳酸盐岩层序沉积演化及海平面的控制作用:以塔里木盆地古城地区奥陶系为例[J].天然气工业,2017,37(1):46-53.ZHANG Junlong.Carbonate sequence sedimentary evolution and control of sea level:A case study of Ordovician in the Gucheng area,Tarim Basin[J].Natural Gas Industry,2017,37(1):46-53.
[18]刘存革,刘永立,罗明霞,等.塔里木盆地奥陶纪碳同位素波动特征与对比[J].成都理工大学学报(自然科学版),2016,43(2):241-248.LIU Cunge,LIU Yongli,LUO Mingxia,et al.Fluctuation characteristics and correlation of carbon isotope in Ordovician,Tarim Basin,China[J].Journal of Chengdu University of Technology(Science&Technology Edition),2016,43(2):241-248.
[19]王冠,张云峰,杨柳明,等.塔里木板块古城4井中奥陶统一间房组的海进序列[J].微体古生物学报,2011,28(1):137-144.WANG Guan,ZHANG Yunfeng,YANG Liuming,et al.Transgressive sequences throughout the Yijianfang Formation(Darriwilian,Middle Ordovician)at well Gucheng 4,Tarim Block,NW China[J].Acta Micropalaeontologica Sinica,2011,28(1):137-144.
[20]朱波.塔中西部地区中奥陶统一间房组沉积特征及储层分布研究[D].成都:西南石油大学,2015.ZHU Bo.Research of sedimentary characteristics and reservoirs distribution in Middle Ordovician Yijianfang Formation in western Tazhong[D].Chengdu:Southwest Petroleum University,2015.
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