特种油气藏2017，Vol.24Issue(4)：19-23,5.DOI:10.3969/j.issn.1006-6535.2017.04.004
安塞长6储层钙质夹层在水淹层测井识别中的应用
The Application of Calcareous Interbed in Logging Identification of Watered Out Zones for Chang6 Reservoir,Ansai Oil Field
摘要
Abstract
Fresh water injection is used in Chang6 formation in Wangyao block in Ansai oil field,where formation water salinity is more or less desalinated and resistivity and water saturation show a"U"shape or"inversed L"shape relationship,which makes watered out zones difficult to identify. In order to solve this problem,easily availa-ble calcareous interbeds from Chang6 reservoir in Wangyao block,whose logging response characteristics shows an apparent change before and after the zone is watered out,a new qualitative identification method for watered out zones is proposed,i.e. calcareous interbed resistivity comparison method. The method has good identification effi-ciency and enables semi-quantitative interpretation,solving the problem of multiplicity of solution for watered out zones,resulting from the change of"U"shape or"inversed L"shape resistivity after zones are watered out. The method provides reference for logging interpretation of watered out zones in ultra-low permeability oil field devel-oped by fresh water injection.关键词
钙质夹层/测井识别/长6储层/王窑区/安塞油田Key words
calcareous interbed/logging identification/Chang6 reservoir/Wangyao block/Ansai oil field分类
能源科技引用本文复制引用
李恕军,谭玉涵,慕国权,安小平..安塞长6储层钙质夹层在水淹层测井识别中的应用[J].特种油气藏,2017,24(4):19-23,5.基金项目
国家自然科学基金"坳陷型富烃凹陷的主要特征和形成的动力学环境——以鄂尔多斯盆地为例"(41330315) （41330315）
