冷东松散地层钻井液技术初探

Drilling Fluid Technology for Lengdong Unconsolidated Formation

针对辽河油田冷东地区造成井径扩大、固井质量差的地质因素和常规钻井液的局限性,对MLH—Ⅱ钻井液配方进行了改进。讨论了其稳定井壁的机理并介绍了现场配制及维护要点。14口井的应用证明,改进后的MLH—Ⅱ钻井液成功地解决了松散地层扩径和固井质量问题,满足了钻井工程的需要,降低了钻井综合成本。

A mud system is given against the special point of Lengdong oil field . Tests at H wells indicate that this mud solve the hole collapse problem and improve the cementint quality.