准噶尔盆地白垩系低电阻油层成因  

Origin of Cretaceous Low-Resistivity Reservoirs in Junggar Basin

作　　者：张丽霞[1] 朱国华[2] 李民[1] 

机构地区：[1]中国石油新疆油田分公司准东采油厂研究所,新疆阜康831511 [2]中国石油勘探开发研究院杭州所,浙江杭州310023

出　　处：《新疆石油地质》2004年第4期388-389,共2页Xinjiang Petroleum Geology

摘　　要：准噶尔盆地自垩系吐谷鲁群油层、油水同层和水层的电阻率明显低于侏罗系头屯河组、西山窑组相应储集层的电阻率。白垩系吐谷鲁群油层的含水率高于侏罗系,白垩系中发育的含水粘土膜极大地扩大了储集层中导电网络的截面积,是导致储集层低电阻的主要原因,粘土矿物的差异对电阻率也有一定影响。The oil zone, oil-water transition zone and aqueous layer of Cretaceous Tugulu group in Junggar basin occur obvious resistivity lower than that found in reservoirs of Jurassic Toutunhe formation and Xishanyao formation. The study shows the reason or origin is due to the fact that the water cut in Tugulu reservoirs is higher than that of Jurassic; water bearing clay film developed in Cretaceous could greatly enlarge the cross-sectional area of electric conductive network, so the clay film is mainly responsible for existing low resistivity of Cretaceous reservoirs. In addition, the difference of clay minerals has effect on the low resistivity reservoirs.

关 键 词：准噶尔盆地 白垩系 电阻率 油水率 粘土矿物 

分 类 号：TE122.221[石油与天然气工程—油气勘探] P631.82[天文地球—地质矿产勘探]