水平井蒸汽驱影响因素及作用机理  

INFLUENCES AND ACTING MECHANISM OF THE HORIZONTAL WELL STEAM FLOODING

作　　者：程紫燕[1] 

机构地区：[1]中国石化胜利油田分公司地质科学研究院,山东东营257015

出　　处：《大庆石油地质与开发》2015年第3期147-151,共5页Petroleum Geology & Oilfield Development in Daqing

基　　金：中国石油化工股份有限公司重点科学技术研究项目"水平井蒸汽驱提高采收率关键技术研究"(P12123)

摘　　要：胜利油田部分稠油油藏单元已进入水平井蒸汽驱开采阶段,但水平井蒸汽驱驱油机理尚未十分明确。通过建立水平井蒸汽驱高温高压二维比例物理模型,系统研究了稠油油藏驱油机理及注采参数对水平井蒸汽驱的影响。结果表明:水平井蒸汽驱驱油机理为"驱替为主,泄油为辅";油层压力、蒸汽干度和注汽强度是影响水平井蒸汽驱的3大要素,油层压力越低、井底蒸汽干度越高、注汽强度适中,水平井蒸汽驱蒸汽腔发育就更加充分,汽驱驱替效果最佳。Partial heavy oil reservoir units in Shengli Oilfield have entered the production stage of horizontal well steam flooding,but the oil displacing mechanism of the flooding is still not very clear.Through establishing 2D scaled physical model of high temperature and high pressure for the flooding,the mechanism and the impacts of the injection-production parameters on the horizontal well steam flooding are systematically studied.The research resuits indicate that the mechanism is mainly based on the displacement and supplemented by oil drain;the reservoir pressure,steam quality and steam injection intensity are the three dominant factors which influence the development effects of the horizontal well steam flooding.The lower the reservoir pressure is,the higher the bottom-hole steam quality is,the moderate the steam injection intensity is,the more fully developed steam chambers of the horizontal well steam flooding will be,and furthermore the best displaced effects of the steam flooding will be.

关 键 词：稠油油藏 水平井蒸汽驱 物理模拟 驱油机理 油层压力 蒸汽干度 注汽强度 

分 类 号：TE319[石油与天然气工程—油气田开发工程]