摘要
高温、高压、深井、小井眼尾管固井是固井技术的一个难点,龙16井在各项配套工程技术措施综合应用的情况下施工成功,为高温、高压、深井固井作业积累了经验。龙16井是川北低平褶皱带九龙山构造上的一口预探井,原设计Φ215.9 mm井眼钻至下二叠系完钻。由于地质条件复杂,纵向上分布多套产层并具有超高压特点,地层裂缝发育,多次出现涌漏同存复杂情况,被迫提前下入Φ177.8 mm套管固井以封隔上部复杂井段。采用Φ149.2 mm钻头钻至5988.00 m完钻并进行了尾管固井作业。固井作业前钻井液密度2.34 g/cm3时油气显示强烈,井温139.6℃。
The liner cementing under high temperature and high pressure in slim-hole is difficult. Well Long - 16 is an important preliminary prospecting well in Chuanbei low and flat fold belt of Jiulongshan structure. The original 215.9mm hole was designed to complete in Permian, but as well kick and circulation loss happened frequently, 177. 8mm casing was put down to cement the upper well section ahead of schedule. In this case, 149. 2mm bit was used to 5988.00m, and liner cementing was completed. Before cementing, oil gas showed strongly with drilling fluid density of 2. 34g/cm^3 and well temperature of 139. 6℃.
出处
《探矿工程（岩土钻掘工程）》
2008年第11期24-26,共3页
Exploration Engineering:Rock & Soil Drilling and Tunneling
基金
教育部"长江学者和创新团队发展计划"资助(编号:IRT0411)
关键词
深井
高温高压
尾管固井
deep well
HTHP well
liner cementing
