摘要
分析了井眼失稳的敏感因素，利用井眼稳定分析软件对港海３１井的井眼稳定性进行了预测和分析，给出了该井的安全泥浆密度窗口，并据此设计了该井的钻井液密度和井身结构。施工结果表明，该井没有出现任何井眼失稳事故，平均井径扩大率在５％以内，最大井径扩大率为１０％，达到了优质井眼的标准。
This paper analysed the
sensitive parameters of well instability. By use of borehole stability analysis software,the safe
density window of drilling fluid for Ganhhai 3-1 Well was predicted. Mud densities and casing
structures were also designed according to the software. Results of drilling operations
demonstrated that the optimum densities of drilling fluids predicted are practical,which
indicated by the quite stable borehole with very low well hole enlargements(less than
5%).
出处
《石油钻探技术》
CAS
北大核心
1999年第3期16-18,共3页
Petroleum Drilling Techniques
关键词
井眼稳定
水基钻井液
钻井泥浆
钻井液
密度
hole stabilization,water base mud,hole enlargement,pore pressure,formation
breakdown pressure,drilling fluid density,pressure prediction,log data,Ganghai 2-1
Well,Ganghai 3-1 Well,Xingang structure
