海拉尔盆地乌尔逊凹陷水文地质特征与油气运聚关系.docx

第32卷第5期 2010年10月Vol.32,No.5 Oct.,2010石 油 实 验 第32卷第5期 2010年10月 Vol.32,No.5 Oct.,2010 PETROLEUM GEOLOGY EXPERIMENT 文章编号：1001-6112(2010}05-0453-06 海拉尔盆地乌尔逊凹陷 水文地质特征与油气运聚关系 张 秋，聂志阳，谭志伟，张作祥，刘凤霞 (中国石油天然气股份有限公司大庆油田有限责任公司勘探开发研究院，黑龙江大庆 163712) 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：交替活跃一氧化区带，开启程度高，不利于油气赋存；交替缓慢一弱还原区带，较有利于油气藏形成； 交替阻滞一还原区带，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。 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 中图分类号： TE144 文献标识码：A RELATIONSHIP BETWEEN HYDROGEOLOGY FEATURES AND HYDROCARBON ACCUMULATION IN WUERXUN SAG, HAILAER BASIN Zhang Qiu, Nie Zhiyang, Tan Zhiwei,Zhang Zuoxiang,Liu Fengxia (Exploration and Derelopment Research Institute of Daqing Oilfield, PetroChina, Daqing, Heilongjiang 163712,China) Abstract: 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. Key words: underground water; hydrodynamic; Wuerxun Sag; Hailaer Basin 地下水是沉积盆地流体的重要组成部分，油气 的生、运、聚、散都是在水的参与下进行的，长期以 来是地质工作者研究的热点课题[1-6]。笔者在生 产实践中积累了丰富的水文地质资料，从水动力场 与水化学场统一的观点，以海