濮阳3286 m岩盐勘探深井高密度钻井液工艺

High-density Drilling Fluid Technology in 3286m Deep Exploration Well of Puyang

摘要:

濮阳岩盐普查项目ZK0401孔设计孔深3280 m。在该孔钻探取心施工中，结合地层水敏性、地层压力及地温特点，试验采用了耐高温、高密度饱和盐水钻井液，并配以适宜取心钻探工艺，成功地实施了连续岩盐取心，实际终孔孔深3286 m，收到了良好的效果。重点介绍了钻井液体系配方的优选及钻井液工艺技术措施。

Abstract:

ZK0401 is a deep hole in the salt rock survey project with designed depth of 3280m. In the coring drilling operation, according to the characteristics of water sensitivity formation, formation pressure and ground temperature, the successful experiment was made by drilling fluid with high temperature resistance and high density saturated salt water drilling fluid matching the suitable core drilling technology, hole terminal depth was 3286m, and the continuous salt rock coring was realized with good effects. The paper introduces the optimization of drilling fluid composition and the drilling fluid technology and measures in detail.