环形防喷器在地热钻井中的应用  

Application of Annular Blowout Preventer in Geothermal Drilling

作　　者：徐成帅[1] 张琦[1] Xu Chengshuai;Zhang Qi(Sichuan Salt Industry Geological Drilling Crew,Zigong,Sichuan,643000)

机构地区：[1]四川盐业地质钻井大队,四川自贡643000

出　　处：《中国井矿盐》2020年第5期19-21,共3页China Well and Rock Salt

摘　　要：结合康定市康盛地热有限公司地热井施工工程,阐述在松散的第四系地层和结构紧密的洪积与冰碛层、热干岩发育层中顶热水钻进的施工难点,提出了应对措施;通过采用大孔径无需扩孔、合理的钻具组合、钻具纠斜、扶正器防斜、成熟的固井技术、旋转防喷器顶涌钻进技术等钻探技术措施,降低了施工风险,节约了施工成本,保质保量完成了地热井钻探任务。Combined with the geothermal well construction project of Kangsheng Geothermal Co.,Ltd.of Kangding City,the construction difficulties of top hot water drilling in the loose fourth-line formation and tightly structured flood and hail layer and hot-dry rock development layer are put forward.Drilling technical measures such as holes,reasonable drill combination,drill errigitis,antislope,mature cementing technology,rotary blowout prevention machine top-flow drilling technology,reducing construction risk,saving construction costs,quality and quantity completed the geothermal well drilling task.

关 键 词：旋转防喷器 地热井 钻井技术 施工难点 

分 类 号：TS32[轻工技术与工程]