赵玉武,潘国辉,彭承文,贺友志,刘宗堡,张云峰,王鸿军
ZHAO Yuwu,PAN Guohui,PENG Chengwen,HE Youzhi,LIU Zongbao,ZHANG Yunfeng,WANG Hongjun

• 1:中国石油大庆油田有限责任公司第八采油厂
• 2:东北石油大学地球科学学院
• 3:辽宁石油化工大学石油天然气工程学院
• 4:中国石油大庆油田有限责任公司第九采油厂

摘要(Abstract)：

砂体连通性研究对于明确简单斜坡油气运移规律具有重要意义。以松辽盆地齐家地区高台子油层为靶区，采用三维储层随机建模和原油全烃色谱对比技术，对三角洲前缘亚相砂体连通性及其对简单斜坡成藏的控制作用进行研究。结果表明：中期旋回界面对应的湖泛泥岩为单一砂岩输导层有效顶板，高台子油层垂向上划分为S1―S4共4套单一砂岩输导层；砂地比是决定砂体静态连通性的最重要因素，控制砂体静态连通性呈“S”形快速增大，砂体类型和砂体几何参数影响了相同砂地比对应的砂体静态连通性，其结果为一定区间的范围值；动态连通性砂体的砂地比的渗流阈值（C0）高于砂体静态连通性，动态连通性砂体的砂地比的完全连通系数（C）接近砂体静态连通性；油气主要分布在处于砂体动态连通性的砂地比C0和C之间的有利区带。齐家地区高台子油层实例证明建立的砂体连通性评价方法可应用于简单斜坡的区带评价与目标优选。
The study of sandbody connectivity is important for determining hydrocarbon migration laws in simple slopes. Taking Gaotaizi reservoir in Qijia area of Songliao Basin as target area, techniques of 3D stochastic reservoir modeling and total hydrocarbon chromatographic comparison of crude oil are used to study delta front subfacies sandbody connectivity and its control on simple slope accumulation. The results show that, lake flooding mudstone corresponding to mid-term cycle surface is effective roof of single sandstone carrier bed, and Gaotaizi reservoir is vertically divided into 4 sets of single sandstone carrier beds of S1-S4. Sandstone-strata thickness ratio is the most important factor to determine static sandbody connectivity, which controls rapid “S-shaped” increase of static sandbody connectivity. Same sandstone-strata thickness ratio affected by sandbody type and sandbody geometric parameters corresponds to static sandbody connectivity value in a certain range. Flow threshold value(C_0) of sandstone-strata thickness ratio of dynamic sandbody connectivity is higher than that of static sandbody connectivity, while complete connectivity coefficient(C) of dynamic sandbody connectivity is close to that of static sandbody connectivity.Hydrocarbon is mainly distributed in favorable zones with sandstone-strata thickness ratio of dynamic sandbody connectivity between C_0 value and C value. The case study of Gaotaizi reservoir in Qijia area proves that the established method for evaluating sandbody connectivity can be applied to plays evaluation and targets optimization of simple slopes.

关键词(KeyWords)： 简单斜坡;砂体连通性;砂地比;区带评价;松辽盆地
simple slope;sandbody connectivity;sandstone-strata thickness ratio;plays evaluation;Songliao Basin

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目“基于储层构型理论解析的三角洲相致密砂岩储集性多级词次表征研究”（42172161）

作者(Author): 赵玉武,潘国辉,彭承文,贺友志,刘宗堡,张云峰,王鸿军
ZHAO Yuwu,PAN Guohui,PENG Chengwen,HE Youzhi,LIU Zongbao,ZHANG Yunfeng,WANG Hongjun

DOI: 10.19597/J.ISSN.1000-3754.202312029

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