摘要
曲流河摆动频繁,储层横向变化快,海上油田主要采用单砂体大井距水平井开发,受限于水平井轨迹、噪音影响,水平井测井相识别存在多解性,有必要建立适合海上油田的识别标准。以渤海海域地震品质较好的L油田为例,利用相干切片及振幅属性融合技术形成了砂、泥相属性信息,结合钻井资料标定确定沉积微相;其次,在测井资料归一化处理基础上,通过平剖、井震结合采用常规测井系列和AziTrak探边资料确定水平井测井相。根据这套技术,形成地质–测井沉积模式,建立了适合海上油田曲流河沉积废弃河道、末期古河道、侧积夹层及点坝识别定量标准,为油气藏精细管理打下基础。
As the meandering river swings frequently,it has drastic lateral variation of reservoirs.Offshore oilfields mainly utilize the pattern of horizontal wells with wide well spacing for single sand body development.Limited by the influence of the horizontal well trajectory and the noise effect,there exists multi solutions in logging facies identification for horizontal wells.Therefore,it is necessary to establish identification standards suitable for offshore oilfields.By taking L oilfield with good seismic quality in Bohai sea as an example,by means of coherence slices and RMS attribute fusion technology,the attribute information of sand and mud was formed,and the sedimentary microfacies was determined by calibrating the drilling data.Based on the normalization of logging data,through plane profile and well log-seismic data combination,the logging facies of horizontal wells were determined by using conventional logging series and AziTrak edge sounding data.Based on this technology mentioned above,a geological-logging sedimentary model has been formed by establishing the quantitative identification standards of abandoned channels of meandering river sediments,late paleochannels,lateral interlayers and point dams suitable for offshore oilfields,which provides a basis for fine management of oil and gas reservoirs.
作者
汪巍
郭敬民
孙恩慧
李博
张小龙
WANG Wei;GUO Jingmin;SUN Enhui;LI Bo;ZHANG Xiaolong(Tianjin Company,CNOOC(China)Co.,Ltd.,Tianjin 300452,China)
出处
《石油地质与工程》
CAS
2019年第6期20-23,28,共5页
Petroleum Geology and Engineering
基金
十二五国家科技重大专项“海上稠油油田高效开发示范工程（二期）–海上油田丛式井网整体加密及综合调整油藏工程技术示范”（2011ZX05057–001）
关键词
水平井
测井相
废弃河道
末期古河道
侧积夹层
horizontal well
log facies
abandoned river courses
late paleochannel
lateral intercalation
