海上气田高难度级大位移水平井钻井设计及应用分析

Drilling Design and Application Analysis of High Extended Reach Drilling Ratio Horizontal Well For Offshore Gas Fields

海上天然气资源多分布于地质条件复杂的浅部地层,具有地应力结构异常、断层及浅层气发育的特点,极易诱发严重卡钻及井漏事故。为明确海上气田高难度级大位移井钻井设计方法,利用案例与理论设计的对比和特殊工艺工具技术的应用,进一步探究海上气田高难度级大位移水平井钻井极限尤为重要。

Offshore gas resources are mostly located in shallow formations with complex geological conditions,characterized by abnormal ground stress structures, faults and shallow gas distribution, which can easily lead to serious sticking and lost circulation. In order to clarify the drilling design method of High extended reach drilling ratio horizontal well in offshore gas fields, further study on the drilling limits by comparing case and theoretical design, or the application of special tools and technology is particular important.