单砂体内部薄夹层参数提取精度评价  

EVALUATION OF ACCURACY OF PARAMETERS EXTRACTED FROM THIN INTERBEDS IN SINGLE SAND BODY

作　　者：张书麟[1] 宫长路[2] 

机构地区：[1]中国科学院广州地球化学研究所,广东广州510640 [2]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《大庆石油地质与开发》2009年第2期33-36,共4页Petroleum Geology & Oilfield Development in Daqing

摘　　要：单砂体内部薄夹层，各项参数提取的精度是影响三维地质建模加载精度及剩余油定量研究的主要因素。因此，针对在现代沉积及古代露头研究基础上发展起来和正在应用的各种方法，提取曲流型分流河道单砂体内部薄夹层各项参数（包括薄夹层倾角、倾向、侧积体规模等）的精度进行了评价。并就目前应用的各种方法所提取的参数构建的单砂体空间表征与所研究砂体的适应性进行了探讨。通过对各种方法的实际应用、对比分析及适应性探讨反映出：在B级薄夹层倾向提取的各种方法中，以废弃河道平面分布提取的倾向较为准确；应用岩心分析及成像测井提取薄夹层倾角比较直观，而其它几种方法在达到选井要求的情况下也能较好地反映夹层倾角；侧积体规模提取的几种方法较为客观，能够较好地反映地下实际情况。Accuracy of parameters extracted from thin interbeds of single sand body is main factor that affects loading accuracy of 3D geologic modeling and quantitative study on remaining oil. Based on development and application of modern sedimentary and ancient outcrop study, this paper evaluates the accuracy of parameters extracted from thin interbeds of single sand body of meandering distributary channel （ including thin interbed angle, dip and lateral deposition body size ） , and it discusses the space characterization of single sand body established by parameters extracted with the present methods, as well as adaptability of studied sand body. Through actual application, correlation analysis and research on adaptability for each method, it concludes that dip extracted from planar distribution of abandoned channel is more accuracy than that of others in Class B thin interbeds; angle of thin interbeds with core analysis and imaging logging data is much illustrative ; other methods that meet the requirement of well selecting can also reflect angle of interbeds ; the methods with lateral deposition body size is objective, which can well reflect actual surface condition.

关 键 词：曲流型分流河道 薄夹层 参数提取 精度 

分 类 号：TE321[石油与天然气工程—油气田开发工程]