准噶尔盆地中部4区块侏罗系地震相与沉积相
|
摘要
在准噶尔盆地腹部油气勘探已成为寻找储量的主要方向,但研究程度低未取得重大突破,因此研究区的基础工作尤为重要。本文应用层序地层学的方法,将研究区侏罗系地层划分为7个三级层序;利用地震反射波的振幅、连续性、内部反射结构和外部集合形态等在本区地震反射剖面上识别出充填相、前积相、丘状相、中振中(高)连续亚平行席状相、强振幅相及乱岗状相等六种地震相类型。研究表明,这些地震相在平面上分布部位明确,垂向上具有继承性和差异性,以单井相作为约束,完成地震相到沉积相的转化,划分出半深湖,滨浅湖,三角洲等沉积相类型,提出了有利的储集相带,指导下一步的勘探工作。
The exploration of oil and gas in the centre of Junggar basin has become the main direction of searching reserves,but a significant breakthrough has not been due to the lower research degree.So the basic work of this area seems especially important.Based on the principles of sequence stratigraphy,the Jurassic formation of study area is divided into 7 third-grade sequences;According to the characteristics of seismic reflection such as wave amplitude, continuity,internal reflections textures and external set forms etc,six types of seismic facies,filling facies,fore-set facies,dome-shaped facies,medium amplitude medium or high continuous sub-parallel sheeted facies,high amplitude facies and chaotic facies are identified from the seismic reflection.Studies showns that these seismic facies' distribution in plane is specific with vertical heritage and difference,Taking the single well facies as restraint conditions,we have finished the facies conversion of seismic to sedimentary.Several facies such as semi-deep lacustrine,shore-shallow lacustrine and deltaic systems have been divided,also,some favorable facies belts was putted forward.All these achievements will provide guidance for further exploration.
The exploration of oil and gas in the centre of Junggar basin has become the main direction of searching reserves,but a significant breakthrough has not been due to the lower research degree.So the basic work of this area seems especially important.Based on the principles of sequence stratigraphy,the Jurassic formation of study area is divided into 7 third-grade sequences;According to the characteristics of seismic reflection such as wave amplitude, continuity,internal reflections textures and external set forms etc,six types of seismic facies,filling facies,fore-set facies,dome-shaped facies,medium amplitude medium or high continuous sub-parallel sheeted facies,high amplitude facies and chaotic facies are identified from the seismic reflection.Studies showns that these seismic facies' distribution in plane is specific with vertical heritage and difference,Taking the single well facies as restraint conditions,we have finished the facies conversion of seismic to sedimentary.Several facies such as semi-deep lacustrine,shore-shallow lacustrine and deltaic systems have been divided,also,some favorable facies belts was putted forward.All these achievements will provide guidance for further exploration.
引文
[1]张喜林,朱筱敏,杨俊生.苏北盆地高邮凹陷古近系戴南组地震相研究[J].西安石油大学学报,2005,20(3).
[2]张琴,朱筱敏,张满郎.准噶尔盆地阜东斜坡区侏罗系地震相研究[J].石油大学学报,2001,25(1).
[3]蒲仁海,梅志超,唐忠华.准噶尔盆地东部侏罗系陆相层序地层初探[J].新疆石油地质,1994,15(4):335~341.
[4]徐怀大,王世飞,陈开远.地震地层学解释基础[M].武汉:中国地质大学出版社,1990:12~145.
[5]张万选,张厚福,曾洪流.陆相地震地层学[M].东营:石油大学出版社,1993:23~76.
[6]尹兵祥,王尚旭,杨国权,田海芹,等.渤海湾盆地东营—惠民凹陷古近系孔店组孔二段地震相与沉积相[J].古地理学报,2004,6(1).
[7]Miaoo A D.Stratigraphic sequences andtheir chronos-tratigraphic correlation[J].Journel of Sedimentary Petrology,1991,61:497~505.
[2]张琴,朱筱敏,张满郎.准噶尔盆地阜东斜坡区侏罗系地震相研究[J].石油大学学报,2001,25(1).
[3]蒲仁海,梅志超,唐忠华.准噶尔盆地东部侏罗系陆相层序地层初探[J].新疆石油地质,1994,15(4):335~341.
[4]徐怀大,王世飞,陈开远.地震地层学解释基础[M].武汉:中国地质大学出版社,1990:12~145.
[5]张万选,张厚福,曾洪流.陆相地震地层学[M].东营:石油大学出版社,1993:23~76.
[6]尹兵祥,王尚旭,杨国权,田海芹,等.渤海湾盆地东营—惠民凹陷古近系孔店组孔二段地震相与沉积相[J].古地理学报,2004,6(1).
[7]Miaoo A D.Stratigraphic sequences andtheir chronos-tratigraphic correlation[J].Journel of Sedimentary Petrology,1991,61:497~505.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心