确定水平井有效井底半径、表皮系数和产能比的新方法  

New Methods of Determining Effective Bottom Hole Radius,Skin Factor and Productivity Ratio of Horizontal Well

作　　者：张枫[1] 陈元千[2] 韩斌[3] 

机构地区：[1]中国地质大学 [2]中国石油勘探开发研究院,北京100083 [3]华北石油管理局油气井测试公司,河北廊坊065007

出　　处：《油气井测试》2008年第2期5-6,9,共3页Well Testing

摘　　要：水平井是提高油气井产能的重要手段,它除了具有超长的生产井段和较大的渗流面积之外,还具有显著的井底有效半径和较大的负表皮系数。因此,水平井具有较高的产量和产能比。根据水平井产量的新公式,提出了确定水平井井底有效半径、表皮系数和产能比的新方法,并与Joshi方法进行了有效对比,取得了一致的结果。Horizontal well is an important method to increase the production of oil and gas. Except for its super-long producing interval and relatively big filtration area, it also has obvious effective bottom hole radios and relatively big minus skin factor. So horizontal well has relatively high production and productivity ratio. The paper uses the new formula of horizontal well production to give a new method to determine the effective bottom hole radios horizontal well, skin factor and productivity ratio. Meanwhile, comparing with the formulas of Joshi, an identical result is achieved.

关 键 词：水平井 井底有效半径 表皮系数 产能比 

分 类 号：TE353[石油与天然气工程—油气田开发工程] P412.15[天文地球—大气科学及气象学]