动静相结合的浅水三角洲平原分流河道单砂体对比方法  

Dynamic and static comparison method of single sandbody in distributary channel of shallow delta plain

作　　者：李艳然[1] LI Yanran(Exploration and Development Research Institute of Henan Oilfield Company,SINOPEC,Zhengzhou 450000,China)

机构地区：[1]中国石化河南油田分公司勘探开发研究院,河南郑州450000

出　　处：《复杂油气藏》2021年第3期20-26,共7页Complex Hydrocarbon Reservoirs

基　　金：中国石化科技重大专项(P19016-2)。

摘　　要：准确进行单砂体对比是进行油藏精细描述的基础。利用松辽盆地密井网区资料,针对浅水三角洲沉积特点,从选取标志层、确定主要河道、找到变化井点,到明确对比原则,再利用定量知识库进行约束等技术方法,建立三角洲平原分流河道单砂体对比模式,运用各种静态约束条件与动态资料(示踪剂),通过动态资料指导验证划分结果,形成一套完整的单砂体对比方法。对三角洲平原分流河道单砂体进行划分和对比研究发现:物源方向上从三角洲平原到三角洲前缘,砂体从低角度平缓前积逐渐表现出正常前积的特征;浅水三角洲平原分流河道单砂体对比可分为三种模式。通过对砂体对比方法的合理运用,对松辽盆地某油田的单砂体对比与划分起到良好的指导效果。Accurate comparison of single sandbodies is the basis for fine reservoir description.Using the data from the dense well pattern area in the Songliao Basin,regarding the characteristics of shallow-water delta sedimentation,from technical methods such as selecting marker layers,determining main river channels,finding change well points,clarifying comparison principles,and using quantitative knowledge bases to constrain,etc.,it was established a single sandbody comparison model for distributary channels in delta plains,which can use various static constraints and dynamic data(tracers)to verify the division results through the guidance of dynamic data.And then it was formed a complete set of single sandbody comparison methods.The division and comparison study of the single sandbody in the delta plain distributary channel showed that from the delta plain to the delta front in the provenance direction,the sandbody gradually exhibits the characteristics of normal forebodies from the low-angle and gentle ones.And then the comparison of single sandbodies in distributary channels of shallow delta plains can be divided into three modes.Through the reasonable application of the sand body comparison method,it has played a good guiding effect on the single sandbody comparison and division of an oil field in the Songliao Basin.

关 键 词：单砂体 分流河道 浅水三角洲 对比方法 

分 类 号：TE132[石油与天然气工程—油气勘探]