东营凹陷沙三段浊积岩体系及其油气勘探意义
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摘要
东营凹陷沙河街组三段沉积中发育有大量的浊积砂体,它们构成了完整的浊积岩体系。在大量分析法积砂体岩相、地震相及测井相特征的基础上,对浊积砂体的时空分布特征和影响浊积砂体发育因素进行了研究。结果表明,浊积砂体的发育受多种因素的影响,主要包括沉积物物源的供应、洼陷带的开阔程度和沉积古地形的特征、水动力条件以及三角洲的规模和建设性、沉积盆地的沉降速率以及构造活动,主导因素的不同可以导致不同类型浊积砂体的形成。简要讨论了浊积砂体的沉积模式和油气勘探意义。
There are a lot of turbid sand bodies in the third section of the Shahejie Formation in Dongying Sag. Those turbid sand bodies composed an integrated turbidity system. The characteristics of lithofacies,seismic facies and electrofacies of the sand bodies were analyzed. The distribution characteristics and the factors affecting the development of the sand bodies were investigated. The results show that the development of sand bodies were mainly controlled by many factors including the supply of sediments,openness of the sag,palaeo-topography features,hydrodynamic conditions,scale and constructivity of delta,sedimentation rate of the depositional basin,and tectonic activity. Different types of turbid sand bodies could be formed due to the variation of main controlling factors. The sedimentary models for turbid sand bodies in Shahejie Formation were proposed,and their bearing on oil and gas prospecting were discussed.
There are a lot of turbid sand bodies in the third section of the Shahejie Formation in Dongying Sag. Those turbid sand bodies composed an integrated turbidity system. The characteristics of lithofacies,seismic facies and electrofacies of the sand bodies were analyzed. The distribution characteristics and the factors affecting the development of the sand bodies were investigated. The results show that the development of sand bodies were mainly controlled by many factors including the supply of sediments,openness of the sag,palaeo-topography features,hydrodynamic conditions,scale and constructivity of delta,sedimentation rate of the depositional basin,and tectonic activity. Different types of turbid sand bodies could be formed due to the variation of main controlling factors. The sedimentary models for turbid sand bodies in Shahejie Formation were proposed,and their bearing on oil and gas prospecting were discussed.
引文
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[10] 李文厚,邵磊,魏红红,等.西北地区湖相浊流沉积[J].西北大学学报(自然科学版),2001,31(1) :57-62．
① 郑和荣,郭汝泰.东营凹陷中北部沙三、沙四上等时地层格架及砂体模式重建研究.东营:复式油气田编辑部,1995:21-26．
[1] 方爱民,李继亮,侯泉林.浊流及相关重力流沉积研究综述[J].地质论评,1998,44(3) :270-280．
[2] 于建国,王金铎,韩文功,等.浊积砂体的测井约束反演描述技术[A].见:储层综合评价配套技术编委会.储层综合评价配套技术[C].北京:石油工业出版社,1999:73-81．
[3] 于建国,韩文功,王金铎.陆相断陷盆地砂岩储层横向预测[M].北京:石油工业出版社,2002:35-37．
[4] 孙连浦,刘招君,李本才,等.水下扇岩相特征及形成机制[J].世界地质,2001,20(3) :249-256．
[5] Dorrik A V Stow, Mike Mayall. Deep-water sedimentary systems: New models for the 21~(st) century[J]. Marine and Petroleum Geology, 2000, 17(2) : 125-135．
[6] McCaffrey B, Kneller B. Mechanics of submarine debris flow initiation[M].Geoscience 98 Abstracts Volume, 1998:9-10．
[7] 雷怀玉,邹伟宏,王连军,等.岔西地区浊积岩的发现及其油气勘探意义[J].沉积学报,1999,17(1) :89-94．
[8] 冯有良,邱以钢.高精度层序地层学在济阳坳陷下第三系隐蔽油气藏勘探中的应用[J].石油学报,2003,24(1) :49-52．
[9] Walker R G. Deep--water sandstone facies and ancient submarine fans: Models for exploration for stratigraphic traps [J]. AAPG Bulletin, 1978, 62(6) : 932-966．
[10] 李文厚,邵磊,魏红红,等.西北地区湖相浊流沉积[J].西北大学学报(自然科学版),2001,31(1) :57-62．
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