石油勘探与开发2011，Vol.38Issue(2)：216-220,5.
水平井水平段最优长度设计方法改进
An improvement of the design method of optimal horizontal wellbore length
摘要
Abstract
To solve the problem of optimal horizontal length design, reasonable hypothesis and simplification were conducted for the flow in horizontal wells in reservoirs using the filtration mechanic theory. Based on the model proposed by Fan Zifei,et al. , fully considering the effects of various drilling costs and petroleum prices on horizontal length design, a new model to calculate the optimal length of horizontal section was derived. At the same time, productivity calculation error is introduced into Fan Zifei's method, and according to case calculation, the effects of horizontal length, flow rate in well,wellbore coarse degree, fluid viscosity, reservoir permeability, wellbore diameter on the horizontal well prodcution and productivity calculation error were analyzed. The results indicate that, for a given reservoir, the main factors affecting horizontal well production and productivity error are horizontal length, wellbore coarse degree and wellbore diameter; for a particular horizontal well, the main factors affecting horizontal well production and productivity calculation error are fluid viscosity, reservoir permeabiltiy and flow rate in the well.关键词
水平井/最优长度/层流/紊流/摩擦损失/压差/敏感性分析分类
能源科技引用本文复制引用
曾晓晶,同登科..水平井水平段最优长度设计方法改进[J].石油勘探与开发,2011,38(2):216-220,5.基金项目
国家重点基础研究发展规划(973)项目(2002CB211708) （973）
山东省自然科学基金资助项目(Y2003F01) （Y2003F01）
