大斜度井注水井筒压力场计算模型分析研究  

Analysis of high angle well water injection wellbore pressure calculation model

作　　者：徐涛[1] 刘清友[2] 

机构地区：[1]西南石油大学机电工程学院,四川成都610500 [2]西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500

出　　处：《石油化工应用》2015年第6期12-15,共4页Petrochemical Industry Application

基　　金：国家科技重大专项;项目编号:2011ZX05050

摘　　要：我国陆上油田为提高采收率而陆续进入注水开发时期,采用大斜度井分层注水的作业方式数量逐年增加。为研究大斜度井注水管柱井筒压力分布规律,建立了井筒压力场计算模型,并通过分析注水过程中流体在注水管柱内外空间的流动过程,得到摩阻系数作为不定常数时,流体摩阻引起注水管柱内流体压降变化,最后通过两口大斜度注水井的管柱数据,对已建立的井筒压力场模型进行计算验证,得到井筒压力随井深的变化曲线,发现曲线线性度较好,井斜角变化越大而井筒压力增加越快的规律,所得压力数据可用于求解注水管柱变形量等其他力学参量。Our country onshore oil fields to enhance oil recovery and gradually into a period of water injection development, the practices number that using high angle well to separate layer water flooding number increases year by year. For the study of high angle wells water injection string wellbore pressure distribution, wellbore pressure calculation model is estab- lished, and through the analysis of flow process of fluid in the injection string inside and outside space in the process of water injection, get fluid friction caused by changes in fluid pressure drop in the water injection string when the friction coefficient as indefinite constant,to calculate and verificate the wellbore pressure field model that has been established by two high angle of water injection string data, get the wellbore pressure curve along with the change of depth and find that the curve linearity is better and the greater the inclination changes, the faster wellbore pressure increases, the pressure data can be used to solve the injection string deformation and other mechanical parameters.

关 键 词：注水 大斜度井 压力场 井筒 分析 

分 类 号：TE357.62[石油与天然气工程—油气田开发工程]