乌尔逊凹陷乌北次洼南屯组沉积特征研究
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摘要
本文综合采用层序地层学、地震地层学、沉积学等最新理论和方法,通过岩心观察描述,运用地震、测井、录井等分析资料,对乌尔逊凹陷乌北次洼南屯组的层序特征、沉积相及其展布特征及进行了深入细致的分析和研究。同时,结合乌尔逊凹陷乌北地区构造地质特征,对该区域的沉积特征进行了研究,并对有利相带的分布进行了预测。本次研究能为该区域层序的划分提供可靠的依据,对今后该区油气勘探与开发提供一定的理论支持,具有重要的指导意义和借鉴价值。
本次研究将南屯组划分为2个三级层序、7个四级层序,且每个三级层序内部各个体系域均发育完全,两个三级层序的分界面位于岩性和电性的转换面,界面之下局部削截,界面之上为上超。
本次研究利用地震、录井、测井、岩心等资料,并结合对沟谷、坡折带、同沉积断层的研究,辅以对地震属性、地层及砂岩的分布特征、重矿物分布特征的分析,确定研究区南屯组沉积时期,主要发育有辫状河三角洲相、扇三角洲相、湖泊相,部分发育湖底扇相及火山岩相,并且确定了四级层序内沉积体系的展布特征,明确了乌北次洼沉积模式。
综合考虑生、储、盖及生储盖组合特征等油藏形成的基本条件以及砂体的展布并结合目前油气勘探成果,预测出研究区内的有利区带。
Based on the most newest theories and methods of Sequence Stratigraphy, Seismic Stratigraphy and Sedimentology, the sequence characteristics as well as sedimentary facies distributions in NanTun Formation in the Northern area of WuErxun Depression were analyzed and researched in detail in this paper, integrated with sufficient cores observation, and seismic, logging data analyzing. Moreover, combined with the structural geology features of that area, sedimentary characteristics researching and favorable facies belt distribution prediction were also processed. Consequently, abundantly reliable basises for sequence division could be achieved in this paper, which can definitely provide great supportions for the future exploration and development in that area.
NanTun formation was classified into two third-order sequences, and seven fourth-order sequences elaborately in this paper. Some likely aspects can be illustrated:Firstly, completedly developed system domains exist in each third-order sequence. Secondly, the interface of two adjacent sequences shows evident lithology and electrical conversion. Finally, these sequence interfaces are partly truncated underside, and onlaped above.
Based on seismic, logging and core data, combined with the studies of gully, slope break and synsedimentary fault, integrated with the analysis of seismic attributes, stratum and sandstone distribution, as well as heavy mineral characteristics, the conclusion that four mainly facies including braided fluvial delta facies, fan-delta facies and lacustrine facies, as well as two secondary facies compsed of volcanic facies and lake fan facies, were developed in the NanTun formation, have be arrived. Furthermore, the depositional system distributions of the fourth-order sequence, as well as the depositional patterns in the northern area of WuErxun Depression were also identified in this paper.
At last, based on the comprehensively analysis of basic hydrocarbon accumulation conditions such source bed, reservoir area, cap rock and so on, as well as the sandstones distribution and other researching results, the favorable belt in this area was predicted.
本次研究将南屯组划分为2个三级层序、7个四级层序,且每个三级层序内部各个体系域均发育完全,两个三级层序的分界面位于岩性和电性的转换面,界面之下局部削截,界面之上为上超。
本次研究利用地震、录井、测井、岩心等资料,并结合对沟谷、坡折带、同沉积断层的研究,辅以对地震属性、地层及砂岩的分布特征、重矿物分布特征的分析,确定研究区南屯组沉积时期,主要发育有辫状河三角洲相、扇三角洲相、湖泊相,部分发育湖底扇相及火山岩相,并且确定了四级层序内沉积体系的展布特征,明确了乌北次洼沉积模式。
综合考虑生、储、盖及生储盖组合特征等油藏形成的基本条件以及砂体的展布并结合目前油气勘探成果,预测出研究区内的有利区带。
Based on the most newest theories and methods of Sequence Stratigraphy, Seismic Stratigraphy and Sedimentology, the sequence characteristics as well as sedimentary facies distributions in NanTun Formation in the Northern area of WuErxun Depression were analyzed and researched in detail in this paper, integrated with sufficient cores observation, and seismic, logging data analyzing. Moreover, combined with the structural geology features of that area, sedimentary characteristics researching and favorable facies belt distribution prediction were also processed. Consequently, abundantly reliable basises for sequence division could be achieved in this paper, which can definitely provide great supportions for the future exploration and development in that area.
NanTun formation was classified into two third-order sequences, and seven fourth-order sequences elaborately in this paper. Some likely aspects can be illustrated:Firstly, completedly developed system domains exist in each third-order sequence. Secondly, the interface of two adjacent sequences shows evident lithology and electrical conversion. Finally, these sequence interfaces are partly truncated underside, and onlaped above.
Based on seismic, logging and core data, combined with the studies of gully, slope break and synsedimentary fault, integrated with the analysis of seismic attributes, stratum and sandstone distribution, as well as heavy mineral characteristics, the conclusion that four mainly facies including braided fluvial delta facies, fan-delta facies and lacustrine facies, as well as two secondary facies compsed of volcanic facies and lake fan facies, were developed in the NanTun formation, have be arrived. Furthermore, the depositional system distributions of the fourth-order sequence, as well as the depositional patterns in the northern area of WuErxun Depression were also identified in this paper.
At last, based on the comprehensively analysis of basic hydrocarbon accumulation conditions such source bed, reservoir area, cap rock and so on, as well as the sandstones distribution and other researching results, the favorable belt in this area was predicted.
引文
[1]云金表,罗笃清,李玉喜.乌尔逊断陷构造样式及对圈闭类型的控制[J].大庆石油学院学报,1994,18(3)：14-17
[2]王娜等.海拉尔盆地乌尔逊凹陷乌南地区下白垩统层序地层发育及沉积相带特征[J].内蒙古石油化工,2010,16：45.
[3]张长俊,龙永文等.海拉尔盆地沉积相特征与油气分布[M].北京：石油工业出版社,1995：1-8.
[4]陈守田,刘招君.海拉尔盆地含油气系统[J].吉林大学学报,2002,32(2)：151-154
[5]黄超义等.海拉尔盆地乌尔逊断陷构造特征和基底伸展量研究[J].世界地质,2005,3(6)：1-5.
[6]刘志宏等.海拉尔盆地乌尔逊—贝尔凹陷的构造特征及其对油气成藏的影响[J].大地构造与成矿学,2007,31(2)：151-156.
[7]陈守田,刘招君.海拉尔盆地构造样式分析[J].吉林大学学报,2005,35(1)：39-42.
[8]解习农,任建业,焦养泉等.断陷盆地构造作用与层序样 式[J].地质论评,1996,42(3)：239-24.
[9]朱筱敏.层序地层学[M].东营：中国石油大学出版社,2000.18-26.
[10]W.Schlager. Depositioml bias and environmental change-important factors in sequence stratigraphy. Sedimentary Geology,1991,70(2/4):109-130.
[11]纪友亮等.层序地层学原理及层序成因机制模式[M].北京：地质出版社,1997.
[12]C.K.威尔格斯等(美国)编,徐怀大,魏魁生,洪卫东等译.层序地层学原理(海平面变化综合分析)[M].北京：石油工业出版社,1993.
[13]张远东.层序地层学研究现状及发展趋势[J].世界石油工业,2000,7(10)：14-17.
[14]侯明才,陈洪德,田景春.层序地层学的研究进展[J].矿物岩石,2001,21(3)：128-134.
[15]黄耀华.奈曼旗凹陷九佛堂组沉积层序地层研究[D].中国地质大学(北京)博士学位论文.2008-05.25-30.
[16]张世奇,肖焕钦.陆相断陷湖盆中层序边界的形成机理及其识别特征研究[J].江汉石油学院学报,2003,25(3)：4-7.
[17]向树安.冀中拗陷淀南地区古近系沙河街组沙一-沙三段层序地层及沉积体系研究[D]中国地质大学(北京)博士学位论文.2008-04.55-63.
[18]王卫红,姜在兴,操应长,鄢继华.测井曲线识别层序边界的方法探讨[J].西南石油学报,2003,25(3)：1-4.
[19].于民凤,程日辉,那晓红.陆相盆地主要沉积微相的测井特征[J].世界地质,2005,24(2)：182-187.
[20]徐怀大,王世凤等.地震地层学解释基础[M].武汉：中国地质大学出版社,1990
[21]刘振峰.地震资料在层序地层学中的应用进展[J].地球物理学进展,2003,3(1)：24-28.
[22]陆基孟.地震勘探原理及资料解释[M].北京：石油工业出版社,1991.
[23].王卫红,姜在兴,操应长.测井曲线在是被陈家庄突起北部缓坡带层序边界中的应用[J].江汉石油学院学报,2003,25(3)：62-64.
[24]操应长,姜在兴等.陆相断陷湖盆层序地层单元的划分及界面识别标志[J].石油大学学报,1996,20(4)：1-4.
[25]赵俊青,纪友亮,张世奇.陆相高分辨率层序界面识别的地球化学方法[J].沉积学报,2004,22(1)：79-86.
[26]韩清华.东营凹陷辛东地区层序地层格架与油气藏预测研究[D].中国科学院研究生院博士学位论文.2008-12.25-29.
[27]曹广华,胡亚华,张奇文等.利用测井资料识别沉积微相方法研究[J].科学技术与工程,2004,7(15)：214-215.
[28]于民凤,程日辉,那晓红.陆相盆地主要沉积微相的测井特征[J].世界地质,2005,24(2)：182-187.
[29]陈守田,王建民,刘杰烈等. 海拉尔盆地岩性地震勘探资料解释技术[J].天然气工业,2007,27(增刊A)：342-344.
[30]杨憋新,戴跃进,李清仁等. 乌尔逊凹陷下切谷的特征及成因[J].大庆石油地质与开发,2003,22(5)：11-13.
[31]王英明,金武弟,刘书会,等.断陷湖盆多级坡折带的成因类型、展布及其勘探意义[J].石油与天然气地质,2003,24(3)：199-203.
[32]林畅松,潘元林,肖建新,等.构造坡折带—断陷湖盆层序和油气预测的重要概念[J].地球科学,2000,25(3)：260-267.
[33]袁丽华.坡折带理论在海拉尔盆地乌东斜坡带隐蔽圈闭勘探中的应用[J].天然气勘探与开发,2007,3(30)：29-31.
[34]李寅.滦平盆地西瓜园组扇三角洲沉积体系构成及其特征[J].地球学报,2003,24(4)：353-356.
[35]康建威等.湖泊相沉积体系划分方案及其测井特征讨论[J].安徽地质,2007,17(1)：9-12.
[36]冯增昭.沉积岩石学[M].北京：石油工业出版社,1992,150-163.
[37]John T W, Christopher A S, Michael J S. Processes of sedimentation on a Lacustrine border-fault margin:Inter-pretation of cores from Lake Malawi, East Africa[J]. Journal of Sedimentary Research,1999,69(4):816-831.
[38].付广,于丹.苏仁诺尔断裂垂向封闭时空分布及其与油气聚集的关系[J].石油学报,2005,26(6)：40-45
[39].付广,杜春国,孟庆芬.乌尔逊凹陷油气成藏与分布控制因素分析[J].西安石油大学学报(自然科学版),2005,20(1)：8-12.
[40]孙超,朱筱敏,方炳钟等.陆西凹陷九佛堂组层序格架及其与岩性圈闭的关系[J].中国石油大学学报,2009,33(3)：1-5.
[2]王娜等.海拉尔盆地乌尔逊凹陷乌南地区下白垩统层序地层发育及沉积相带特征[J].内蒙古石油化工,2010,16：45.
[3]张长俊,龙永文等.海拉尔盆地沉积相特征与油气分布[M].北京：石油工业出版社,1995：1-8.
[4]陈守田,刘招君.海拉尔盆地含油气系统[J].吉林大学学报,2002,32(2)：151-154
[5]黄超义等.海拉尔盆地乌尔逊断陷构造特征和基底伸展量研究[J].世界地质,2005,3(6)：1-5.
[6]刘志宏等.海拉尔盆地乌尔逊—贝尔凹陷的构造特征及其对油气成藏的影响[J].大地构造与成矿学,2007,31(2)：151-156.
[7]陈守田,刘招君.海拉尔盆地构造样式分析[J].吉林大学学报,2005,35(1)：39-42.
[8]解习农,任建业,焦养泉等.断陷盆地构造作用与层序样 式[J].地质论评,1996,42(3)：239-24.
[9]朱筱敏.层序地层学[M].东营：中国石油大学出版社,2000.18-26.
[10]W.Schlager. Depositioml bias and environmental change-important factors in sequence stratigraphy. Sedimentary Geology,1991,70(2/4):109-130.
[11]纪友亮等.层序地层学原理及层序成因机制模式[M].北京：地质出版社,1997.
[12]C.K.威尔格斯等(美国)编,徐怀大,魏魁生,洪卫东等译.层序地层学原理(海平面变化综合分析)[M].北京：石油工业出版社,1993.
[13]张远东.层序地层学研究现状及发展趋势[J].世界石油工业,2000,7(10)：14-17.
[14]侯明才,陈洪德,田景春.层序地层学的研究进展[J].矿物岩石,2001,21(3)：128-134.
[15]黄耀华.奈曼旗凹陷九佛堂组沉积层序地层研究[D].中国地质大学(北京)博士学位论文.2008-05.25-30.
[16]张世奇,肖焕钦.陆相断陷湖盆中层序边界的形成机理及其识别特征研究[J].江汉石油学院学报,2003,25(3)：4-7.
[17]向树安.冀中拗陷淀南地区古近系沙河街组沙一-沙三段层序地层及沉积体系研究[D]中国地质大学(北京)博士学位论文.2008-04.55-63.
[18]王卫红,姜在兴,操应长,鄢继华.测井曲线识别层序边界的方法探讨[J].西南石油学报,2003,25(3)：1-4.
[19].于民凤,程日辉,那晓红.陆相盆地主要沉积微相的测井特征[J].世界地质,2005,24(2)：182-187.
[20]徐怀大,王世凤等.地震地层学解释基础[M].武汉：中国地质大学出版社,1990
[21]刘振峰.地震资料在层序地层学中的应用进展[J].地球物理学进展,2003,3(1)：24-28.
[22]陆基孟.地震勘探原理及资料解释[M].北京：石油工业出版社,1991.
[23].王卫红,姜在兴,操应长.测井曲线在是被陈家庄突起北部缓坡带层序边界中的应用[J].江汉石油学院学报,2003,25(3)：62-64.
[24]操应长,姜在兴等.陆相断陷湖盆层序地层单元的划分及界面识别标志[J].石油大学学报,1996,20(4)：1-4.
[25]赵俊青,纪友亮,张世奇.陆相高分辨率层序界面识别的地球化学方法[J].沉积学报,2004,22(1)：79-86.
[26]韩清华.东营凹陷辛东地区层序地层格架与油气藏预测研究[D].中国科学院研究生院博士学位论文.2008-12.25-29.
[27]曹广华,胡亚华,张奇文等.利用测井资料识别沉积微相方法研究[J].科学技术与工程,2004,7(15)：214-215.
[28]于民凤,程日辉,那晓红.陆相盆地主要沉积微相的测井特征[J].世界地质,2005,24(2)：182-187.
[29]陈守田,王建民,刘杰烈等. 海拉尔盆地岩性地震勘探资料解释技术[J].天然气工业,2007,27(增刊A)：342-344.
[30]杨憋新,戴跃进,李清仁等. 乌尔逊凹陷下切谷的特征及成因[J].大庆石油地质与开发,2003,22(5)：11-13.
[31]王英明,金武弟,刘书会,等.断陷湖盆多级坡折带的成因类型、展布及其勘探意义[J].石油与天然气地质,2003,24(3)：199-203.
[32]林畅松,潘元林,肖建新,等.构造坡折带—断陷湖盆层序和油气预测的重要概念[J].地球科学,2000,25(3)：260-267.
[33]袁丽华.坡折带理论在海拉尔盆地乌东斜坡带隐蔽圈闭勘探中的应用[J].天然气勘探与开发,2007,3(30)：29-31.
[34]李寅.滦平盆地西瓜园组扇三角洲沉积体系构成及其特征[J].地球学报,2003,24(4)：353-356.
[35]康建威等.湖泊相沉积体系划分方案及其测井特征讨论[J].安徽地质,2007,17(1)：9-12.
[36]冯增昭.沉积岩石学[M].北京：石油工业出版社,1992,150-163.
[37]John T W, Christopher A S, Michael J S. Processes of sedimentation on a Lacustrine border-fault margin:Inter-pretation of cores from Lake Malawi, East Africa[J]. Journal of Sedimentary Research,1999,69(4):816-831.
[38].付广,于丹.苏仁诺尔断裂垂向封闭时空分布及其与油气聚集的关系[J].石油学报,2005,26(6)：40-45
[39].付广,杜春国,孟庆芬.乌尔逊凹陷油气成藏与分布控制因素分析[J].西安石油大学学报(自然科学版),2005,20(1)：8-12.
[40]孙超,朱筱敏,方炳钟等.陆西凹陷九佛堂组层序格架及其与岩性圈闭的关系[J].中国石油大学学报,2009,33(3)：1-5.
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