【摘要】 以高精度层序地层学理论为指导,通过对岩心、地震、测井、录井以及分析化验等资料的综合研究,重建了松辽盆地大庆长垣杏树岗地区姚家组一段葡萄花油层组葡I332 a—葡Ⅰ11细层单元沉积模式。认为在杏北油田"脉动隆升作用"(所谓脉动是指下伏隆升中心波动迁移现象)是曲流复合带有规律摆动的内在动力因素。在此理论指导下,重建了该区各细层单元沉积微相平面展布模式。平面上在主力油层葡Ⅰ1—Ⅰ3共识别出了2种亚相、14种沉积微相。综合研究认为,杏树岗葡I332 a—葡I22细层属于三角洲上分流平原相,以高弯曲分流河道砂沉积为主,点坝砂相对发育;葡Ⅰ212细层属于三角洲下分流平原相,以低弯曲分流河道砂沉积为主;葡Ⅰ211—葡Ⅰ11细层属于内前缘干枝状三角洲沉积。该区沉积相的精细研究,为该区下一步油气的勘探与开发奠定了基础。更多还原

【Abstract】 Based on the theory of high accuracy sequence stratigraphy,this paper reconstructs the sublayer units deposition model of the Putaohua oil layer group PⅠ332a-PⅠ11 thin layer of Yaojia Formation 1st section from Xingshugang area of Daqing Changyuan in Songliao basin,which comprehensively uses various data such as core analysis,seismic data,well logs and analysis test data.Our analysis suggests that there is a "panting uplift action"(the so-called panting is a phenomenon that the underlying uplift center migrates wavelike) in Xingbei oilfield,which is the internal dynamic factor of meandering composite belt swings regularly.Guided by this theory,the plane distribution patterns of every sublayer sedimentary microfacies units were rebuilt in this area.There are 2 sub-facies and 14 microfacies types were recognized from main oil layers PI1-PI3 in plane.Comprehensive research shows that the PI332a-I22 thin layer units of Xingshugang oilfield are the upper distributary plain subfacies,where high bending distributary channel sand is the main part and the point bar relatively develop.PI212 thin layer is the lower distributary plain subfacies,where low bending distributary channel sand is the main part.PI11-PI211 thin layer is the dendritic inner front delta deposition.The detailed study of sedimentary facies in this area laid a foundation for oil and gas exploration and development.更多还原