探井钻井液性能是油气层保护技术一个重要部分，对油田的勘探开发起着举足轻重的作用。对水敏性地层要减少钻井液对油气层的伤害，必须控制钻井液的滤失量和低密度固相含量，匹配的降滤失剂一定要加足，同时必须控制好钻井液密度，保持平衡钻井。加强对探井钻井液的监测对保护油气层效果显著。 Exploration well drilling fluid performance is an important part of oil and gas layer protection technology, plays an important role in the exploration and development of the oil field. Water-sensitive strata to reduce drilling fluid damage to the reservoir, we must control the fluid loss and low-density drilling fluid solids content, matching fluid loss additives must be added, at the same time must control the density of the drilling fluid to maintain Balance drilling. Enhancing the monitoring of exploration drilling fluid has a significant effect on the protection of oil and gas reservoirs.