水侵和布井方式对水平井开发效果影响及作用机制分析  

Analysis on the Influence of Water Invasion and Well Pattern on the Development Effect of Horizontal Well and the Action Mechanism

作　　者：罗云龙 夏欢 薛宝庆 代磊阳 曹豹 刘进祥[1] LUO Yun-long;XIA Huan;XUE Bao-qing;DAI Lei-yang;CAO Bao;LIU Jin-xiang(MOE Key Laboratory of Enhanced Oil Recovery,Northeast Petroleum University,Daqing 163318,China;CNOOC Tianjin Branch Research Institute,Tianjin 300452,China)

机构地区：[1]东北石油大学提高油气采收率教育部重点实验室,大庆163318 [2]中海石油天津分公司研究院,天津300452

出　　处：《当代化工》2021年第4期885-891,共7页Contemporary Chemical Industry

基　　金：中海石油(中国)有限公司重大科技攻关课题经费资助(项目编号:CCL2017TJTZLST0772)。

摘　　要：为了经济合理开发边底水油藏,认识水侵规律,研究剩余油分布情况,为水侵治理和改善水平井开发效果提供理论依据和指导,根据渤海油田实际地质特征和流体物性建立理论地质模型,研究了底水、边水和注入水等不同水侵方式和布井方式对水平井开发效果的影响,分析了不同水侵方式下水平井生产动态特征。结果表明:对于底水油藏,可增加避水高度来延缓底水锥进,延长油井无水采油期,但在均质油藏中避水高度对水平井出水位置基本无影响;对于边水油藏,水平井水平段与边水间夹角越大,水平井见水时间越早,见水位置出现在水平井近边水端;对于注水开发油藏,随两水平井间夹角增大,油井见水时间提前。同时,针对不同水侵方式给出了开采剩余油的措施。In order to develop edge-bottom water reservoir economically and reasonably,recognize the law of water invasion,study the distribution of residual oil and provide theoretical basis and guidance for water invasion treatment and improvement of horizontal well development,based on the actual geological characteristics and fluid physical properties of Bohai oilfield,a theoretical geological model was established,and the influence of different water invasion modes(bottom water,edge water and injected water)and well pattern modes on the development effect of horizontal wells was studied,and the production dynamic characteristics of horizontal wells under different water invasion modes were analyzed.The results showed that for bottom-water reservoirs,the water avoidance height could be increased to delay bottom-water coning and prolong the waterless production period,but the avoidance water height had no effect on the water breakthrough position of horizontal wells in a homogeneous reservoir.For the edge-water reservoirs,the larger the included angle between horizontal section of the horizontal well and edge water,the shorter the water breakthrough time of the horizontal well,and the water breakthrough position appeared in the near edge water end of the horizontal section of the horizontal well.For water flood reservoirs,with the increase of the included angle between the horizontal section of the two horizontal wells,the water breakthrough time of the horizontal wells was advanced,and the water breakthrough position appeared in the near the injection water end of the horizontal wells.At the same time,according to the different ways of water invasion,the measures of developing the remaining oil were put forward.

关 键 词：水平井 水侵方式 数值模拟 布井方式 

分 类 号：TE324[石油与天然气工程—油气田开发工程]