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为简化井身结构 ,节约勘探时间和费用 ,塔里木探区一些深井、超深井只下表层套管 ,不下技术套管 ,裸眼井段长达 350 0~ 4 30 0m。鉴于此 ,开发了长裸眼井测试新工艺 ,该工艺采用裸眼支撑跨隔测试技术 ,一开一关工作制度 ,适用于低压地层的直井 ,其测试成功率与泥浆性能、井眼质量有着密切的关系。长裸眼井测试工艺已在塔中 4 0 4、哈得 4和哈得 1 2井得以成功应用
In order to simplify the structure of wellbore and save exploration time and expense, some deep wells and ultra-deep wells in Tarim exploration area only have casing under casing without any technical casing, and the open-hole section reaches 350 0-430 0m. In view of this, a new open-hole test technology has been developed, which adopts open-hole support span test technology, open-close working system and vertical well for low pressure stratum. Its test success rate is closely related to mud performance and well bore quality relationship. The long-openhole test process has been successfully applied in the Tazhong 404, Hud 4 and Hud 12 wells