八屋气田早白垩系登娄库组小层对比研究
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摘要
早白垩纪登娄库组 (K1 d)是八屋气田内最主要的储层段 ,主要发育分流河道砂和河口砂坝 ,砂层在平面上连通性差。通过 4 2口井的测井曲线、17口井的地震合成记录及波阻抗资料和 8口井 15 5 .5 m的岩芯资料建立了全区地层格架 ,进而采用小旋回对比法对小层进行了划分和对比 ,总结出 7种小层对比分布类型 :稳定分布型、分叉型、叠置尖灭型、稳定叠置型、重叠分叉型、复合型。并将小层的分布类型与储层级别的划分关联起来 ,划分了 , , , 种类型的储层 ,其中 , 类是气田内好的储气层。
K 1d Formation of distributary riverway sand and bayou sand dam is the main reservoir of Bawu gas field.Its sands tend to be laterally inextensive in the plane.Stratigraphic framework was established on the basis of analysis of logging data of 42 wells,seismic synthesis and API of 17 wells and core data. Then division and correlation of substrata can be done by the correlation of short cycle.7 types of correlation were proposed:steady, spite, pinch, stack, stack-pinch, stack-spite, complex in the work.4 types of reserviors were classified by correlating the distribution types of substrata with reservoir levels.Of the 4 types,the Ⅰ,Ⅱ reservoirs are favourable ones in Bawu gas field.
K 1d Formation of distributary riverway sand and bayou sand dam is the main reservoir of Bawu gas field.Its sands tend to be laterally inextensive in the plane.Stratigraphic framework was established on the basis of analysis of logging data of 42 wells,seismic synthesis and API of 17 wells and core data. Then division and correlation of substrata can be done by the correlation of short cycle.7 types of correlation were proposed:steady, spite, pinch, stack, stack-pinch, stack-spite, complex in the work.4 types of reserviors were classified by correlating the distribution types of substrata with reservoir levels.Of the 4 types,the Ⅰ,Ⅱ reservoirs are favourable ones in Bawu gas field.
引文
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