电磁波随钻测量与欠平衡钻井

Electromagnetic Wave Measurement While Drilling and The Under Balanced Drilling

欠平衡钻井具有能提高硬地层的机械钻速,减少循环漏失和压差卡钻等优点,在国外已经得到了迅速发展,成为一种趋势,其大量应用也为电磁波随钻测量技术(EM-MWD)的发展提供了更大空间。简要介绍了欠平衡钻井技术及其特征,并对EM-MWD在其中应用的重要性进行了描述,分析了EM-MWD的关键技术,对其研究方向进行了初步探讨。

The under balanced drilling is able to improve the maehinieal drilling rate in forcibly stratum,to reduce circulating mud loss,and to decrease the pressure differece sticking ere. It has been received rapid development and becomes a sort of direction. A great lot application of the drilling aslo provides a great space for electromagnetic wave measurement while drilling, or EM--MWD. The paper briefly intrduces the under balanced drilling and its character,and describes the itnportance of the appli cation of EM-MWD in under L balanced drilling, and analyses the privotal technique of EM-MWD, and primitively discusses the study di reetion for EM-MWD inthe end.