By reviewing the mechanisms of drilling fluid lost circulation and its control in fractured formations, the applicability and working mechanisms of different kinds of lost circulation materials in plugging fractured formations have been summarized. Meanwhile, based on the types of lost circulation materials, the advantages, disadvantages, and application effects of corresponding plugging technologies have been analyzed to sort out the key problems existing in the current lost circulation control technologies. On this basis, the development direction of plugging technology for severe loss have been pointed out. It is suggested that that the lost circulation control technology should combine different disciplines such as geology, engineering and materials to realize integration, intelligence and systematization in the future. Five research aspects should be focused on: (1) the study on mechanisms of drilling fluid lost circulation and its control to provide basis for scientific selection of lost circulation material formulas, control methods and processes; (2) the research and development of self-adaptive lost circulation materials to improve the matching relationship between lost control materials and fracture scales; (3) the research and development of lost circulation materials with strong retention and strong filling in three-dimensional fracture space, to enhance the retention and filling capacities of materials in fractures and improve the lost circulation control effect; (4) the research and development of lost circulation materials with high temperature tolerance, to ensure the long-term plugging effect of deep high-temperature formations; (5) the study on digital and intelligent lost circulation control technology, to promote the development of lost circulation control technology to digital and intelligent direction.

通过对钻井液堵漏在裂缝性地层中的机理及其控制进行综述，总结了不同种类堵漏材料在裂缝性地层封堵中的适用性和作用机理。同时，根据堵漏材料的种类，分析了相应堵漏技术的优缺点及应用效果，梳理了当前堵漏技术存在的关键问题。在此基础上，指出了严重漏失堵漏技术的发展方向。建议未来堵漏控制技术应结合地质、工程、材料等不同学科，实现集成化、智能化、系统化。重点研究五个方面：（1）钻井液堵漏机理及其控制研究，为科学选用堵漏材料配方、控制方法和工艺提供依据；(2) 研发自适应堵漏材料，改善堵漏材料与裂缝尺度的匹配关系；(3) 研发三维裂缝空间中强截留强充填的堵漏材料，提高材料在裂缝中的截留和充填能力，提高堵漏效果；(4) 研发耐高温堵漏材料，确保深层高温地层长期封堵效果；