气顶底水油藏水平井井间干扰研究  

Interwell interference study on horizontal well in gas-cap oil reservoir with bottom water

作　　者：时宇[1] 杨正明[2] 张训华[2] 

机构地区：[1]中国科学院渗流流体力学研究所,河北廓坊065007 [2]中国石油勘探开发研究院廊坊分院,河北廊坊065007

出　　处：《大庆石油地质与开发》2008年第5期62-66,共5页Petroleum Geology & Oilfield Development in Daqing

基　　金：中国石油天然气股份有限公司重点科技攻关项目资助(06-02A-02-01)

摘　　要：水平井的井间干扰问题为其在底水气顶油藏中的应用造成了一定的影响。为此,利用势函数叠加原理,建立了底水气顶油藏不同产量条件下两口水平井生产的产能模型。利用该模型计算分析了井距、邻井产量、邻井避水高度等参数对油井产能及见水时间的影响。结果表明,井距为影响单井产量和见水时间的控制因素。邻井产量对水平井产能及见水时间的影响程度随井距的增加而降低。尤其值得注意的是,在相同条件下低渗透油藏井间干扰程度较大,其合理井距应大于中高渗油田。同时利用该模型对印尼OSEIL油田进行了预测,所得结果基本符合实际生产数据。Interwell interference of horizontal well has made a certain influence on the well application in gas-cap oil reservoir with bottom water. In views of the above, the paper uses the stack principle of potential functions and establishes productivity model of two horizontal wells under different productions in this kind of oil reservoir. The influence of well spacing, neighboring well＇s production and the height avoiding water and other factors on oil productivity and water break time has been calculated and analyzed with the help of the above model. The results show that well spacing is the controlling factor of the above influence for an individual well. The influence of neighboring well＇ s production on the productivity and water break time of horizontal well varies with the enlargement of well spacing ： inverse relationship. In special, something to notice is that under the same condition the interwell interference of low-permeability oil reservoir is rather serious, so the reasonable well spacing of the above reservoir should be denser than the high one. At the same time, Indonesia OSEIL oilfield has been predicted with the help of this model, the obtained results are generally accordant with actual production data.

关 键 词：水平井 底水气顶油藏 井间干扰 井距 

分 类 号：TE355.6[石油与天然气工程—油气田开发工程]