针对超高密度钻井液体系使用铁矿粉加重,进而导致对钻井设备、钻具及套管磨损严重的问题,研究开发了一套超高密度重晶石钻井液体系。该体系通过在迪那204井上的现场应用表明,该钻井液性能优良,较好地满足了井下安全,减磨效果明显,循环压耗低,很适用于高压窄窗口气层钻进,达到了预期的效果。 Aimed at the problem of ultra high density drilling fluid system using iron ore powder to aggravate, which led to serious wear on drilling equipment, drilling tools and casing, a set of ultra-high density barite drilling fluid system was developed. Through the field application in Dina 204 well, the system shows that the drilling fluid has good performance, well to meet underground safety, obvious anti-abrasion effect and low cyclic pressure loss, which is suitable for drilling in high-pressure and narrow-window gas zone, Expected results.