焉耆盆地博湖坳陷八道湾组层序地层格架及模式分析
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摘要
以层序地层学原理为基础,采用地震线描法,建立了焉耆盆地博湖坳陷八道湾组的层序地层格架。将其自下而上划分为SQ1,SQ2和SQ3等3个三级层序,并分析了各个层序的地层格架特征,同时建立了层序地层模式,指出了在该模式下的油气勘探方向。研究结果表明,八道湾组在层序结构上低位体系域普遍不太发育,水进体系域和高位体系域发育;沉积体系以辫状河三角洲、扇三角洲及湖泊沉积体系为主,沉积分布主要受盆地形态的控制。
The principle of sequence stratigraphy and line drawing method of seismic-reflection profile are applied to establish the sequence stratigraphic framework of Jurassic Badaowan Formation in Bohu Depression of Yanqi Basin.The Badaowan Formation is divided into three third-order sequences,including SQ1,SQ2 and SQ3 from base to top,of which the stratigraphic framework characteristics are analyzed respectively.The sequence stratigraphic model is established and the direction of oil and gas exploration is indicated.The research result shows that the LST is generally not developed widely in those three sequences within the Badaowan Formation,while the TST and HST are well developed;the depositional systems are mainly braided river delta,fan delta and lacustrine deposit and their distributions are mainly controlled by the morphology of the basin.
The principle of sequence stratigraphy and line drawing method of seismic-reflection profile are applied to establish the sequence stratigraphic framework of Jurassic Badaowan Formation in Bohu Depression of Yanqi Basin.The Badaowan Formation is divided into three third-order sequences,including SQ1,SQ2 and SQ3 from base to top,of which the stratigraphic framework characteristics are analyzed respectively.The sequence stratigraphic model is established and the direction of oil and gas exploration is indicated.The research result shows that the LST is generally not developed widely in those three sequences within the Badaowan Formation,while the TST and HST are well developed;the depositional systems are mainly braided river delta,fan delta and lacustrine deposit and their distributions are mainly controlled by the morphology of the basin.
引文
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[2]姚亚明,刘池阳,何明喜,等.焉耆盆地博湖坳陷油气成藏的主控因素及成藏模式[J].新疆石油天然气,2005,1(3):1-6.
[3]徐怀大.寻找非构造油气藏的新思路[J].勘探家,1996,1(1):43-47.
[4]沈守文,彭大均,颜其彬,等.层序地层学预测隐蔽油气藏的原理和方法[J].地球学报,2000,21(3):300-305.
[5]朱筱敏,康安等,谢庆宾,等.内蒙古钱家店凹陷侏罗系层序地层与岩性圈闭[J].石油勘探与开发,2000,27(2):48-52.
[6]柏涛,徐志伟.层序地层学在隐蔽圈闭预测中的应用[J].吉林大学学报:地球科学版,2004,34(1):74-78.
[7]杨国臣,于炳松.隐蔽油气圈闭勘探之发展现状[J].岩性油气藏,2008,20(3):6-11.
[8]王威,李臻,田敏,等.岩性-地层油气藏勘探方法技术研究现状及进展[J].岩性油气藏,2009,21(2):121-125.
[9]李本才,孙凯,白洪斌,等.伊通盆地层序地层格架与层序构成分析[J].岩性油气藏,2009,21(4):28-31.
[10]宋传春.地震-地质综合研究方法述评[J].岩性油气藏,2010,22(2):133-139.
[11]杨杰,卫平生,李相博.石油地震地质学的基本概念、内容和研究方法[J].岩性油气藏,2010,22(1):1-6.
[12]邱荣华,陈文礼,林设卿,等.焉耆盆地中生界层序地层和沉积体系分析[J].地球科学:中国地质大学学报,2001,26(6):615-620.
[13]陈文学,李永林,赵得力.焉耆盆地油气藏特征与成藏模式[J].石油勘探与开发,2000,27(5):12-15.
[14]柳广弟,张仲培,陈文学,等.焉耆盆地侏罗系油气系统特征与演化[J].石油学报,2002,23(6):20-23.
[15]刘新月,余培湘,李方清.焉耆盆地构造变形特征及成因分析[J].煤田地质与勘探,2004,32(6):5-8.
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