摘要
南八仙油气田油气水分布规律复杂,不同层段的典型水层电阻率明显不同,有时会误判储层。针对此问题,认为视电阻增大率判断油气水层方法的关键是分层统计南八仙油田水层电阻率,把细分层段后的地层电阻率与同层段典型水层电阻率之比定义为视电阻增大率。然后在视电阻增大率-声波时差及视电阻增大率-补偿密度2个交会图上标出所有层段的试油、试采的油气水结论,建立起储层评价综合解释的统计经验判别标准,供认识油田的油气分布规律和编制开发方案时参考。
Because of the complexity of oil/gas/water distribution in Nanbaxian Oilfield, the resistivities of typical water-bearing formations vary noticeably in different wet zones, which sometimes result in the payzone misinterpretation. To resolve the difficulty, an apparent resistivity increscent index （Ⅰa） method is introduced. The key of the apparent resistivity incresent method to differentiate oil/ gas/water is zonal statistics of the resistivities of typical water-bearing formations in Nanbaxian Oilfield, and zonal definition of the la as the ratio of the formation resistivity to the zonal statistical resistivity of typical water-bearing formation. Then, all well test and production test data in Nanbaxian Oilfield are labeled on both the crossplot of Ⅰa versus slowness and that of la versus density to establish a statistical empirical criterion on comprehensive interpretation and evaluation of oil/gas/water reservoir. The method facilitates the understanding of oil/gas/water distribution and is a useful reference to reservoir development planning.
出处
《测井技术》
CAS
CSCD
2006年第5期442-444,共3页
Well Logging Technology
关键词
测井解释
油气水层识别
视电阻增大率
南八仙油气田
logging interpretation
evaluation of oil/gas/water formation
apparent resistivity index
Nanbaxian Oil＆ Gas Field
