塔中地区奥陶系鹰山组精细划分
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摘要
塔里木盆地塔中地区奥陶系鹰山组碳酸盐岩是盆地油气勘探开发的重点层位,但由于鹰山组顶部存在一个区域性的不整合面导致不同区块出露地层层位差异较大,给认识储集层的分布造成了一定的困难。根据生物化石、岩性组合特征、测井及地震资料,对鹰山组小层的发育特征进行了详细研究并建立了鹰山组小层划分对比格架。将鹰山组自上而下划分为鹰一段—鹰四段,进而将鹰一段细分为2个亚段、鹰二段细分为3个亚段,地层出露和分布具有区域分带性和良好的可对比性,储集层的发育层位和小层分布具有良好的相关性,这一研究成果为研究盆地碳酸盐岩储集层的成因和分布奠定了可靠的地层学基础。
The Ordovician carbonate rocks in Yingshan formation has become an important position for oil and gas exploration and development in Tazhong area of Tarim basin,but at the top of Yingshan formation there exist a regional uncomformity which leads to big differences among outcrop horizons in different blocks.This paper presents the classification and correlation framework of Yingshan formation,based on bio-fossils,lithology combination,log response,seismic data.It can be divided into Ying-1 member-Ying-4 member,and the Ying-1 member can be sub-divided into two sub-members,the Ying-2 member can be divided into three sub-members.The outcrops and their distributions have regional zonation and good correlatability,and the development horizons of the reservoir and the distribution of sub-layers have good correlation,which provides a reliable stratigraphy basis for study of origins of the carbonate reservoirs and their distributions in this basin.
The Ordovician carbonate rocks in Yingshan formation has become an important position for oil and gas exploration and development in Tazhong area of Tarim basin,but at the top of Yingshan formation there exist a regional uncomformity which leads to big differences among outcrop horizons in different blocks.This paper presents the classification and correlation framework of Yingshan formation,based on bio-fossils,lithology combination,log response,seismic data.It can be divided into Ying-1 member-Ying-4 member,and the Ying-1 member can be sub-divided into two sub-members,the Ying-2 member can be divided into three sub-members.The outcrops and their distributions have regional zonation and good correlatability,and the development horizons of the reservoir and the distribution of sub-layers have good correlation,which provides a reliable stratigraphy basis for study of origins of the carbonate reservoirs and their distributions in this basin.
引文
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[9]王振宇,韩杰,熊益学,等.塔里木板块塔中-古城区块早-中奥陶世沉积格局[J].新疆石油地质,2011,32(3):228-230.
[10]黄思静,石和,张萌,等.锶同位素地层学在奥陶系海相地层定年中的应用———以塔里木盆地塔中12井为例[J].沉积学报,2004,22(1):1-5.
[11]赵宗举,赵治信,黄志斌.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):1-12.
[12]董宝清,杜品德,刘兴礼,等.塔中88井奥陶系吐木休克组的发现及地层划分[J].新疆石油地质,2008,29(5):599-602.
[13]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].石油地质实验,2011,33(4):348-352.
[2]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,1995:163-172.
[3]赵治信,张桂芝,肖继南.新疆古生代地层及牙形石[M].北京:石油工业出版社,2000.
[4]倪寓南,耿良玉,王志浩,等.奥陶系[M]//周志毅.塔里木盆地各纪地层.北京:科学出版社,2001:39-80.
[5]贾承造,张师本,吴绍祖,等.塔里木盆地及周边地层[M].北京:科学出版社,2004.
[6]杨海军,李勇,刘胜,等.塔中地区中、上奥陶统划分对比的主要认识[J].新疆石油地质,2000,21(3):209-212.
[7]蔡习尧,钱一雄,陈跃,等.塔中地区中下奥陶统划分与对比[J].新疆石油地质,2007,28(3):292-295
[8]蔡习尧,李越.新疆塔中南坡奥陶系的地层缺失和沉积相变化[J].地层学杂志,2008,32(4):353-362.
[9]王振宇,韩杰,熊益学,等.塔里木板块塔中-古城区块早-中奥陶世沉积格局[J].新疆石油地质,2011,32(3):228-230.
[10]黄思静,石和,张萌,等.锶同位素地层学在奥陶系海相地层定年中的应用———以塔里木盆地塔中12井为例[J].沉积学报,2004,22(1):1-5.
[11]赵宗举,赵治信,黄志斌.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):1-12.
[12]董宝清,杜品德,刘兴礼,等.塔中88井奥陶系吐木休克组的发现及地层划分[J].新疆石油地质,2008,29(5):599-602.
[13]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].石油地质实验,2011,33(4):348-352.
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