摘要
利用真实砂岩微观模型研究了鄯善油田三间房组油层微观水驱油特征。实验表明，扇三角洲前缘亚相与辫状河三角洲前缘亚相的分流河道沉积驱油效率无多大差异，并且在一定范围内，驱油效率随压力的升高而上升。三间房组的油层裂缝80％为充填缝，对水驱油过程无多大影响。由于三间房组油层强亲水，自吸对提高油层驱油效率是有利的。三间房组油层微观水驱油效率总体上高于安塞油田王窑区、科尔康油田白2块、五号桩油田桩23块三个低渗透油田（区块）。
The microcosndc water-drive characteristics of Sanianfang formation reservoir in Shanshan oilfield was studied by using true sandstone micromodel. The result showed there is no clear difference in sweep efficiency between distributare channel deposits of fan-delta front subfacies and braided-delta front subfacies, and sweep efficiency increases with pressure in a certain range. Frature of 80% in Sanianfang oil formation is filling fracture, which has litile effect on sweep efficiency. Imbibition is favourable for increasing the sweep efficiency in Sanjianfang reservoir because of its strong water wettability, The overall rulcrocosmic sweep efficiency in Sanjianfang reservoir is superior to three low-permeability oiffields(Wangyao area of Ansai oiffield, Block Bai 2 of Kerkang oilfield and Block Zhuang 23 of Wuhaozhuang oilfield).
出处
《新疆石油地质》
CAS
CSCD
1999年第5期422-425,共4页
Xinjiang Petroleum Geology
关键词
鄯善油田
侏罗纪
油层
砂岩
驱油效率
水驱油
Shanshan oilfield Jurassic Oil reservoir Sandstone Model Oil displacement test Oil displacement efficiency
