方正断陷源盖空间匹配关系及控藏作用  

Spatial matching relation between source rock and caprock and its control action on oil-gas accumulation in Fangzheng fault depression

作　　者：付广[1] 刘桐汐 史集建[1] 李云飞 杨丽峰[3] 

机构地区：[1]东北石油大学地球科学学院,黑龙江大庆163318 [2]中国石油大庆油田有限责任公司第四采油厂,黑龙江大庆163511 [3]中国石油大庆油田有限责任公司第八采油厂,黑龙江大庆163514

出　　处：《岩性油气藏》2014年第5期9-14,共6页Lithologic Reservoirs

基　　金：国家自然科学基金项目"断层岩水压张裂漏油主控因素及张性破裂压力预测"(编号:41372154)资助

摘　　要：为了研究方正断陷油气成藏规律,基于源岩和盖层的发育及分布特征,从二者空间匹配关系入手,对该断陷油气成藏与分布的控制作用进行了研究。结果表明:方正断陷主要发育2类5套源盖空间匹配关系,其中自源自盖型2套,主要发育于新安村+乌云组;下源上盖型3套,主要发育于新安村+乌云组至宝二段。Ⅰ和Ⅲ套源盖空间匹配关系在整个断陷均有分布,Ⅱ和Ⅴ套仅分布于断陷东部,Ⅳ套仅分布于断陷西部。5套源盖空间匹配关系对油气成藏与分布的控制作用主要表现在3个方面,分别为源盖空间匹配关系的数量控制着油气聚集与分布的层位,同一层位源盖空间匹配关系的数量控制着油气聚集的数量以及源盖空间匹配关系中盖层的质量控制着油气聚集的数量。In order to study oil-gas accumulation law in Fangzheng fault depression, based on the characteristics of development and distribution of source rock and caproek, this paper studied the spatial matching relation between source rock and caprock and its control action on oil-gas accumulation in Fangzheng fault depression. The result shows that there are two types of spatial matching relation between source rock and caprock itself and lower sourcerock and upper caprock in Fangzheng fault depression. There are two sets of spatial matching relation between source rock and caprock in the first type, and they formed in Xin＇ancun-Wuyun Formation. There are three sets of spatial matching relation between source rock and caprock in the second type, and they formed in Xin＇ancun-Wuyun Formation to the second member of Baoquanling Formation. The first and third sets distributed in the whole fault depression, the second and fifth sets only distributed in the eastern fault depression, and the fourth set only distributed in the western fault depression. The control action of these five sets of spatial matching relation between source rock and caprock on oil-gas accumulation mainly displays in the following three aspects： （1）the numbers of spatial matching relation between source rock and caprock control oil-gas accumulation and distribution horizons; （2）the numbers of spatial matching relation between source rock and caprock in the same horizon control oil-gas accumulation amount; （3）eaproek quality in spatial matching relation between source rock and caprock also controls oil-gas accumulation amount.

关 键 词：源岩 盖层 空间匹配关系 油气聚集 控制作用 方正断陷 

分 类 号：TE122.1[石油与天然气工程—油气勘探]