井漏是油田钻井作业过程中常见的一项技术难题,井漏的发生会给油气开发造成非常大的影响,并且带来不必要的经济损失,因此在复杂地层、裂隙发育的地层以及窄安全密度地层钻井时,采用随钻堵漏技术非常必要。本文针对地层漏失的特点,对国内外堵漏技术的研究应用进行了总结,并以物理法随钻防漏技术为例,对钻井随钻防漏技术进行了分析,研究结果表明,人造井壁渗透率低、稳定性高、强度大,可以有效的防止钻井液漏入地层,从而达到较好的防漏堵漏效果。 Lost circulation is a common technical problem in oilfield drilling operations. The occurrence of a well leakage will have a very big impact on oil and gas development and bring unnecessary economic losses. Therefore, in complex formations, fractured formations and narrow safety Density formation drilling, the use of drilling plugging technology is necessary. Based on the characteristics of formation loss, this paper summarizes the research and application of the plugging techniques at home and abroad. Taking the leak-proofing technique by the physical method as an example, this paper analyzes the leak-proofing technique of the drilling while drilling. The results show that, Low permeability, high stability, high strength, can effectively prevent the drilling fluid leakage into the formation, so as to achieve a better anti-leakage plugging effect.