随钻地震SWD监测技术

Seismic-While Drilling Survey Technique

随钻地震(SWD)监测是应用于钻井作业期间的一项全新井眼地震技术,该技术已逐渐应用于全球各地。该文对随钻地震原理、牙轮钻头产生地震信号机理、常规垂直地震剖面(VSP)和钻头VSP的特性差异及领先于随钻地震监测领域的Tomex系统给予简要的介绍,同时对随钻地震技术的特点及应用前景等进行了探讨。随钻地震监测技术的应用增加了新的随钻录井手段,为综合评价油气层、指导安全优化钻井增加了新的信息。

Seismic-While Drilling survey is a new wellbore seismic technique which is used in drilling operation and has been used in the world gradually.The paper introduces briefly SWD principle,the mechanical theory of the roller cone-bit generating seismic signals,the differences between the conventional vertical seismic profile and the drill-bit vertical seismic profile and the Tomex′s system.It discusses the characteristics of the SWD and its application prospects.The application of SWD survey technique provides the new method for logging while drilling,and so gives us more information for comprehensive evaluation of oil and gas reservoir and guiding drilling optimized and safely.