鄂尔多斯盆地东北部山西组河流相沉积证据
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摘要
对于鄂尔多斯盆地东北部主力含层段二叠系山西组尤其是山2段的沉积相研究众说纷纭,不同的观点导致对各个沉积体系内部的砂岩展布解释与砂层对比产生了很大差异,进而加大了高效砂体分布预测和勘探部署的难度。为此,在前人研究的基础上,结合测井、地震、岩心、露头等资料,对该区山西组沉积相进行了综合研究。结果指出,河流冲积作用是控制鄂尔多斯盆东部高效储层形成与分布的基本因素,进而提出湿地—强侵蚀限制性河道下切谷充填沉积体系的新观点,并提出了相应的沉积模式和勘探思路。
There is much disagreement over the sedimentary facies of the Permian Shanxi Formation, especially its second member, which is the main pay zone in the northeastern part of the Ordos Basin, leading to great variations of the interpreted sandbody distribution and sandstone correlation results for each sedimentary system, thus further increasing the difficulties of prediction of high quality sandbodies and exploration deployment. The sedimentary facies of the Shanxi Formation in this area is comprehensively studied based on previous understandings and in combination with the logging, seismic, core and outcrop data. The results show that fluvial outwash is a fundamental factor controlling the formation and distribution of the high quality reservoirs in the eastern Ordos Basin. A new sedimentary system concept of wetland-strong erosion-restricted channel incised valley fill is proposed and the corresponding sedimentary models and exploration directions are presented.
There is much disagreement over the sedimentary facies of the Permian Shanxi Formation, especially its second member, which is the main pay zone in the northeastern part of the Ordos Basin, leading to great variations of the interpreted sandbody distribution and sandstone correlation results for each sedimentary system, thus further increasing the difficulties of prediction of high quality sandbodies and exploration deployment. The sedimentary facies of the Shanxi Formation in this area is comprehensively studied based on previous understandings and in combination with the logging, seismic, core and outcrop data. The results show that fluvial outwash is a fundamental factor controlling the formation and distribution of the high quality reservoirs in the eastern Ordos Basin. A new sedimentary system concept of wetland-strong erosion-restricted channel incised valley fill is proposed and the corresponding sedimentary models and exploration directions are presented.
引文
[1]翟爱军,邓宏文,邓祖佑.鄂尔多斯盆地上古生界层序地层与储层预测[J].石油与天然气地质,1999,20[4]:336-340.
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[3]胡光明,纪友亮,贾爱林,等.鄂尔多斯盆地苏里格地区二叠系河流相地层砂体展布规律[J].油气地质与采收率,2004.11[1]:4-7.
[4]何义中,陈洪德,张锦泉.鄂尔多斯盆地靖北早二叠世沉积体系[J].新疆石油地质,2002,23[1]:27-29.
[5]聂武军,刘棣民,袁芳政,等.鄂北下二叠统含气层段沉积相划分及古地理演化[J].天然气工业,2001,21[增刊]:45-48.
[6]付锁堂,田景春,陈洪德,等.鄂尔多斯盆地晚古生代三角洲沉积体系平面展布特征[J].成都理工大学学报,2003,30[3]:236-241.
[7]周树勋,马振芳,刘锐娥,等.苏里格庙地区二叠系储层特征及有利相带预测[J].西北大学学报,2002,34[4]:335-340.
[8]于兴河.碎屑岩系油气储层沉积学[M].北京:石油工业出版社,2002:211-282.
[9]H G里丁.沉积环境和相[M].周明鉴等译.北京:科学出版社,1985:127-178.
[10]赵澄林.储层沉积学[M].北京:石油工业出版社,1998:1-30.
[11]SHELTONJ W.Stratigraphic models and general crite-ria for recognition of alluvial,barrier-bar,and turbidity-current sand deposits[J].AAPG Bulletin,1967,51:2441-2461.
[12]COLEMANJ M,PRIOR D B.Deltaic sand bodies[C]∥Continuing Education Course Note Series15.AAPG Depart ment of Education,1986,Publ:1-67.
[2]汪正江,陈洪德,张锦泉.鄂尔多斯盆地晚古生代沉积体系演化与煤成气藏[J].沉积与特提斯地质,2002,22[2]:18-23.
[3]胡光明,纪友亮,贾爱林,等.鄂尔多斯盆地苏里格地区二叠系河流相地层砂体展布规律[J].油气地质与采收率,2004.11[1]:4-7.
[4]何义中,陈洪德,张锦泉.鄂尔多斯盆地靖北早二叠世沉积体系[J].新疆石油地质,2002,23[1]:27-29.
[5]聂武军,刘棣民,袁芳政,等.鄂北下二叠统含气层段沉积相划分及古地理演化[J].天然气工业,2001,21[增刊]:45-48.
[6]付锁堂,田景春,陈洪德,等.鄂尔多斯盆地晚古生代三角洲沉积体系平面展布特征[J].成都理工大学学报,2003,30[3]:236-241.
[7]周树勋,马振芳,刘锐娥,等.苏里格庙地区二叠系储层特征及有利相带预测[J].西北大学学报,2002,34[4]:335-340.
[8]于兴河.碎屑岩系油气储层沉积学[M].北京:石油工业出版社,2002:211-282.
[9]H G里丁.沉积环境和相[M].周明鉴等译.北京:科学出版社,1985:127-178.
[10]赵澄林.储层沉积学[M].北京:石油工业出版社,1998:1-30.
[11]SHELTONJ W.Stratigraphic models and general crite-ria for recognition of alluvial,barrier-bar,and turbidity-current sand deposits[J].AAPG Bulletin,1967,51:2441-2461.
[12]COLEMANJ M,PRIOR D B.Deltaic sand bodies[C]∥Continuing Education Course Note Series15.AAPG Depart ment of Education,1986,Publ:1-67.
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