鄂尔多斯盆地致密油水平井产量影响因素分析  

Influencing Factors Analysis of the Horizontal Well Productivity in the Tight Reservoir of the Ordos Basin

作　　者：郝炳英[1] 马继业[1] 叶博[1] 张居增[1] 宋娟[1] 李卫成[1] 

机构地区：[1]长庆油田分公司勘探开发研究院.低渗透油气田勘探开发国家工程实验室,陕西西安710018

出　　处：《油气井测试》2017年第4期16-18,共3页Well Testing

基　　金：国家重大基金项目<中国非常规油气储层分类与典型地质模型建立>(41390451);国家重点基础研究发展计划(973计划)课题(2014CB239003)资助

摘　　要：鄂尔多斯盆地X233井区的10口致密油水平井生产特征有较大差异,北部4口井保持了长达三年的平稳自喷生产,而南部的6口井产量递减较大。从参数改造、原油性质等方面入手,对矿场实际生产数据进行统计分析,并用油藏数值模拟方法进行佐证,对影响水平井稳产时间的因素进行了分析。分析认为,X233井区北部的4口井压裂规模大、存地液量多、原油黏度小,原始气油比高,生产制度合理,井距大,多项参数的综合作用使其稳产时间远高于南部的6口井。该研究结果对致密油布井、改造及开发技术政策的制定有一定的参考意义。The production features of 10 tight petroleum horizontal wells in north x233 of Ordos Basin are much different in that 4 northern wells keep stable flow production yield for three years,while,the production of southern 6 wells decreases greatly.From respects of parameters reformation and crude oil characteristics,statistics analysis to field production data has been done,and verified by using numerical simulation method for oil reservoir,the influencing factors to the period of stable production of horizontal wells are analyzed.The analysis of it shows that the combination effect of greater fracturing scale,lower viscosity,higher original gas-oil ration,reasonable initial production rate and greater well spacing ensures the longer period of the stable production of 4 horizontal wells in north x233 of Ordos Basin than that of southern 6 wells.This research has certain reference significance for the formulation of tight oil wells,transformation and formulation of development policy.

关 键 词：鄂尔多斯盆地 致密油水平井 水平井产量 影响因素 

分 类 号：TE353[石油与天然气工程—油气田开发工程]