新疆麦盖堤地区地层复杂,钻井过程中经常发生喷、漏、塌、卡等事故。介绍了高密度钻井液在麦4、麦6和麦10井中的应用,对使用技术和效果进行了对比。实践证明,高密度钻井液在麦盖堤地区的应用是成功的,井壁稳定性好,井径规则,井下事故少。但在使用高密度钻井液时应注意控制好钻井液的流变性、粘度、切力和矿化度,降低粘土含量,防止地层损害。 Xinjiang Maigatu stratigraphic complex drilling often happen in the spray, drain, collapse, card and other accidents. The application of high-density drilling fluid in wheat 4, wheat 6 and wheat 10 wells is introduced, and the comparison of the techniques and effects is made. Practice has proved that the application of high-density drilling fluid in the Maigaiti area has been successful. The well bore has good stability, well diameter rules and few downhole accidents. However, in the use of high-density drilling fluid should pay attention to controlling the rheological properties of drilling fluids, viscosity, shear and salinity, reduce clay content, to prevent formation damage.