油气区水下分流河道内部建筑结构模式的建立  

Establishment of the model for inter-architecture of underwater distributary channel in oil-gas area

作　　者：马世忠[1] 王一博[1] 崔义[1] 葛政俊[1] 郝兰英[2] 

机构地区：[1]大庆石油学院地球科学学院,黑龙江大庆163318 [2]大庆油田有限责任公司第五采油厂,黑龙江大庆163513

出　　处：《大庆石油学院学报》2006年第5期1-3,共3页Journal of Daqing Petroleum Institute

基　　金：中国石油天然气股份有限公司科技风险创新基金项目(油科函字(2004)32-KF3)

摘　　要：地下单砂体的内部薄夹层及其建筑结构对注入剂驱油及剩余油形成的作用越来越大,但具体的结构模式难以确定.提出了以水下河道沉积模式为指导,采用岩心、近距离对子井等建立河道内部结构体及界面级次垂向序列,确定4级界面产状;根据平面微相、河流工程参数预测河宽,并结合密井组解剖预测4级结构体及薄夹层规模;按薄夹层密度与频数确定其发育程度;由此建立水下分流河道单砂体内部建筑结构模式的研究方法.以杏南油田PⅠ33b及PⅠ21a单元为靶区,应用该方法确定了水下分流河道单砂体内部建筑结构理论模式和研究区实际模式.The internally thin interbed of underground monosandbody and its architecture is playing an increasing important role in the function of injection oil driving and the formation of remaining oil,but it is hard to determine its specific structure.This paper puts forward the researching method,taking the depositional model of underground channel as guidance,using the core,closely subwells(well spacing<50 m) and so on,to set up vertical sequence and hierarchy of internal structural body and the boundary-surface,to obtain attitude of four classes boundary,by planar depositional microfacies and river engineering parameter to predict the width of channel,combining close wells to dissect and predict the scale of four classes structural body and thin interbed,according to density and frequency of the thin interbed to obtain its development maturity,thus setting up the inter-architecture model in underwater distributary channel.Taking PⅠ3^(3b),PⅠ2^(1a) of Xingnan oilfield as the target,it has established the theoretic model and practical model of architecture in monosandbody of underwater distributary channel.

关 键 词：水下分流河道 单砂体 建筑结构 层内非渗透薄夹层 

分 类 号：TE321[石油与天然气工程—油气田开发工程]