摘要
根据地震、测井、录井和岩心资料,应用沉积学和地震地层学的原理和方法,查明了泰康地区萨尔图油层二、三砂组沉积微相特征.结果表明,泰康地区萨尔图油层二、三砂组发育的沉积微相类型主要为滨浅湖泥滩沉积微相、三角洲前缘河口坝、远砂坝微相和浅湖重力流成因的湖底扇沉积.在平面上可分为东西2个相带,西部为三角洲相,由北面的曲流河三角洲和南面的辫状河三角洲组成;而东部为湖泊相,湖泊相主要发育泥岩,其中也发育大量重力流沉积体,三角洲砂体和重力流砂体大面积发育,储集条件好,另外还可形成岩性圈闭.
According to the data from seismic,well logging,mud logging and coring,by applying the principles and the methods based on sedimentology and seismic stratigraphy the paper clarifies the microfacies characteristics of No.2 and 3 sand-bed groups of Saertu oil-bearing layers in Taikang area of northern Songliao basin.The types of the sedimentary microfacies developed in No.2 and 3 sand-bed groups of Saertu oil-bearing layers of Taikang area primarily contain shore-lake and shallow-lake mud beach sedimentary microfacies,delta front channel mouth bar and distal bar sedimentary microfacies,and lake bottom fan sedimentary microfacies caused by shallow lake gravity flow.In the plane,these sedimentary microfacies can be divided into two sedimentary facies districts-the eastern and the western sedimentary facies districts.The western sedimentary facies district develops delta sedimentary facies which comprise the sinuosity delta in the north part and the braid river delta in the south part.While the eastern sedimentary facies district develops lake sedimentary facies which develop mainly shale and also contain many sediments from gravity flow sedimentation.The conclusion is that No.2 and 3 sand-bed groups of Saertu oil-bearing layers in Taikang area of Songliao basin develops large areas of delta sandbodies and gravity flow sandbodies which not only have good reservoir conditions,but also may potentially form a lithologic trap.
出处
《大庆石油学院学报》
CAS
北大核心
2006年第3期14-16,共3页
Journal of Daqing Petroleum Institute
基金
国家自然科学基金项目(40272057)
关键词
沉积特征
松辽盆地
泰康地区
萨尔图油层二、三砂组
sedimentary characteristics
Songliao basin
Taikang area
No.2 and 3 sand-beds groups of Saertu oil-bearing layers
