摘要
沉积盆地内的地下水是油气运移的重要载体,水文地质特征是控制或影响油气藏的边界条件。在划分盆地内含水岩系的基础上,采用水动力场与水化学场相结合的方法,对海拉尔盆地乌尔逊凹陷主要含水岩系的水文地质条件进行研究,划分出3个不同性质的水文地质区带:交替活跃—氧化区带,开启程度高,不利于油气赋存;交替缓慢—弱还原区带,较有利于油气藏形成;交替阻滞—还原区带,封闭程度高,有利于油气藏形成,是油气勘探最有利的目标区域。
Groundwater is an important carrier of hydrocarbon migration in sedimentary basins. Hydrogeological characteristics can control or influence reservoir boundary. On the basis of classifying water-bearing rock series, combining hydrodynamic field with hydrochemical field, the hydrogeological conditions of main water-bearing rock series have been studied in the Wuerxun Sag of the Hailaer Basin. It is divided into 3 different types of hydrogeological zones： a） actively alternating--oxidation zone, which is highly open and is unfavorable for oil and gas accumulation; b） slowly alternating--weak reduction zone, which is more favorable for reservoir formation; c） alternation blocked--reduction zone, which is closed in high degree and is conducive for reservoir formation, hence is the most favorable target area for exploration.
出处
《石油实验地质》
CAS
CSCD
北大核心
2010年第5期453-458,共6页
Petroleum Geology & Experiment
关键词
地下水
水动力
水化学
油气藏
乌尔逊凹陷
海拉尔盆地
underground water
hydrodynamic
hydrochemical parameter
hydrocarbon reservoirs
Wuerxun Sag
Hailaer Basin
