裂缝性潜山油藏空气驱见效特征分析  

Response Analysis of Air-Flooding in Fractured Buried-Hill Oil Reservoir

作　　者：张吉昌 李贻勇 关亮 程道伟 杨小冬 

机构地区：[1]中国石油辽河油田分公司,辽宁盘锦110316

出　　处：《特种油气藏》2017年第6期90-94,共5页Special Oil & Gas Reservoirs

基　　金：中国石油重大科技项目"辽河油田原油千万吨稳产重大专项"子课题5"注气开发关键技术研究与试验"(2012E-3005)

摘　　要：针对裂缝性潜山油藏在中高含水开发期,基质原油动用程度低、控制含水上升与稳定地层压力存在矛盾的问题,在沈625潜山及静北潜山实施了空气驱,并对气驱见效特征进行了分析。结果认为,注气见效体现在油井含水率持续下降;注气见效与注水见效时注采对应关系基本一致;纵向上不同部位注气均有油井见效,但无法确定注气部位的优劣。影响注气效果的因素主要包括注采对应关系、含油饱和度以及地层压力保持水平等。该研究为同类油藏空气驱提供了借鉴。The development of fractured buried-hill oil reservoir in high water-cut stage is featured by low produ- cing-level of matrix oil and significant contradiction between water-cut controlling and formation pressure maintai- ning. Air-flooding is respectively implemented in Shen625 and Jinghei buried-hill oil reservoirs and the corre- sponding air-flooding response is analyzed. Research demonstrates that the response of air injection is characterized by the decline of water-cut in oil well. There is a consistent injection-production relationship for the responses of air-flooding and water-flooding. The optimal air injection interval cannot be determined though any air injection in- terval along the longitudinal direction could lead to response in oil well. The alr-flooding performance is dependent on injection-production relationship, oil saturation and formation pressure level. This research could provide a ref- erence for the air-flooding of similar oil reservoirs.

关 键 词：裂缝性潜山 空气驱 含水率 注气部位 水气交替 

分 类 号：TE344[石油与天然气工程—油气田开发工程]