摘要
土库曼尤拉屯雅士拉区块产层灰岩孔隙发育,存在多套压力体系,在油气层钻进中经常发生井漏、卡钻、溢流等复杂情况。205井为该区块第1口完成设计井深5 000 m的探井,针对该井产层井漏、卡钻的原因及处理过程进行了分析总结,采用关井反推法憋压堵漏控制预防溢流和井喷的发生,同时采用泡解卡剂、泡酸、注清水降压等解卡工艺,成功解决了205井产层漏、卡、喷共存的问题,顺利完成了该预探井的施工任务,为该区块的后续钻探开发提供了可借鉴的经验。
In the Yashila block, Yuratun, Turkmenistan, the limestone reservoir is porous, where there are several pressure systems. During drilling in oil and gas layers, many complexities occurred frequently, such as mud loss, pipe sticking and overlfow. Well 205 is the ifrst exploratory well in this block reaching the design depth of 5 000 m. In this paper, the cause and treatment regarding to mud leakage and drill sticking are analyzed. The shut-in inverse method is used to control and prevent overlfow and blowout. Moreover, stuck pipe-freeing soak, acid soak and injection of fresh water for reducing pressure are used to free the stuck pipe. In this way, the coexistence of mud leakage, drill sticking and overlfow in Well 205 is addressed successfully. The conclusions provide good reference for subsequent exploration and development operations in this block.
出处
《石油钻采工艺》
CAS
CSCD
北大核心
2014年第3期111-113,共3页
Oil Drilling & Production Technology
关键词
井漏
压差卡钻
处理
土库曼斯坦
mud leakage
differential pressure sticking
treatment
Turkmenistan
