河50区块由于多年的开发,地下压力系统遭到破坏,给固井工程提出了严峻的挑战。常规的固井技术不能满足该地区的固井要求。为此,针对该地区大位移、小半径绕障定向井的地质结构特点,开发优化了低密度膨胀水泥浆体系,并结合其他固井工艺技术解决了现场固井技术难题。并且取得了良好的现场应用效果。 Due to the years of development in the river block, the underground pressure system has been destroyed, which poses a severe challenge to the cementing project. Conventional cementing techniques do not meet the cementing requirements in the area. Therefore, aiming at the geological structure features of large displacement and small radius fault directional well in this area, the low density expansion cement slurry system has been developed and optimized, and other cementing technology has been used to solve the technical problems of on-site cementing. And made a good field application results.