永安油田永7断块戴一段隔夹层特征研究  

The Research on Characteristic of Interbed in the First Zone in Dainan Formation of Yong7 BLK in Yongan Oil Field

作　　者：胡秋媛[1] 谢伟[2] 

机构地区：[1]中国石油大学胜利学院油气工程学院,东营257000 [2]中国石化胜利油田物探研究院,东营257022

出　　处：《科学技术与工程》2016年第18期176-181,187,共7页Science Technology and Engineering

基　　金：国家自然科学基金(40772132)资助

摘　　要：利用岩心和测井等资料,通过单井隔夹层划分和隔井间夹层对比,对永安油田永7断块戴一段隔夹层进行统计和描述;结合钻遇率、分布频率和分布密度等参数,描述隔夹层在地下的分布特征。研究表明,永7断块戴一段可划分出3类隔夹层:泥质隔夹层、钙质隔夹层和泥质砾岩隔夹层。岩心及测井资料在区内识别出3个砂层组、26个小层、17个层间隔层和21个层内夹层。层间隔层整体厚度较大,1-7、2-1、2-10、2-12、3-3五个小层顶部隔层发育,钻遇率高;2-8、2-9、2-11、2-13、3-3五个小层的层内夹层分布频率和分布密度较高,频率高值井区和密度高值井区基本统一;层内夹层横向延伸性均较好,属于较稳定夹层,欠稳定夹层或不稳定夹层较少。According to data of core and logging,the interbed in region of interest is counted and described by dividing of single well on interlayer and comparing of interwell on interlay. The characteristic of interbed underground is described by some parameters,for example encounter frequency,distribution frequency,distribution density,and so on. 3 types interbed can be identified in the study area. They are argillaceous interbed,calcareous interbed,argillaceous poephite interbed. The study area is divided into 3 sand layer groups,26 sublayers,17 interlayer and 21 interbed. Generally the thickness of interlayer in the first zone in dainan formation is high. The encounter frequency of five sublayers is lager,which are 1-7,2-1,2-10,2-12,3-3. The distribution frequency and distribution density are lager,which are 2-8,2-9,2-11,2-13,3-3. It is united of area that has higher numerical value of distribution frequency and area that has higher numerical value of distribution density. Interbed extends wide range and steady on horizontal. The interbed that destabilization and understable is less.

关 键 词：夹层类型 分布特征 戴一段 永7断块 

分 类 号：TE122[石油与天然气工程—油气勘探]