高温高压超深井钻井液密度设计方法探讨  

HIGH TEMPERATURE HIGH PRESSURE ULTRA-DEEP WELL DRILLING FLUID DENSITY DESIGN METHOD

作　　者：孙凯[1] 李黔[1] 潘仁杰[2] 

机构地区：[1]西南石油大学,610500 [2]新疆石油管理局

出　　处：《钻采工艺》2009年第2期1-2,112,共2页Drilling & Production Technology

摘　　要：在高温高压超深井的钻探中,由于形成了相对较窄的钻井液安全密度窗口,同时钻井液的密度受温度和井筒压力的影响比较大,地面所配置的钻井液密度和井筒中钻井液密度不同,因此,必须准确的计算并控制钻井液的密度,确保超深井的安全施工。在前人研究基础上,基于超深井中温度和压力对当量静态钻井液密度的影响建立了模型,并对莫深1井的钻井液密度进行了设计分析,研究了井底压力系数和井筒温度对当量静态钻井液密度的影响。During drilling of high temperature high pressure ultra-deep well,because it has formed the relatively narrow drilling fluid security density window,simultaneously the influence of the temperature and the wellbore pressure on drilling fluid density is quite great,the drilling fluid density in the ground disposes and wellbore is different,therefore,drilling fluid density must be compute accuratly and control to guarantee ultra-deep well's safe construction.Based on predecessor's research,the model of the influence of temperature and pressure on the ultra-deep well equivalent static state drilling fluid density(ESD) has been established,and the project analysis of drilling fluid density in Moshen 1 well has been done,and the influence of the bottom hole pressure coefficient and the wellbore temperature on ESD was studied.

关 键 词：超深井 高温高压 地层压力系数 钻井液密度 莫深1井 

分 类 号：TE254.6[石油与天然气工程—油气井工程]