中古514井超长封固段固井技术  

Cementing Technology of Cementing Section of Well Zhonggu514

作　　者：钟福海 孙万兴 钟德华 吴洪波 费中明 张静林 姚泊汗 孔祥远 

机构地区：[1]渤海钻探第一固井分公司 [2]渤海钻探第二钻井工程分公司 [3]渤海钻探第四钻井工程分公司

出　　处：《钻井液与完井液》2013年第3期64-66,96,共3页Drilling Fluid & Completion Fluid

摘　　要：塔里木油田中古514井是部署在塔中北斜坡奥陶系下统的一口气井,产层含有H2S,其浓度大于50 g/m3,为预防分级箍的长期密封失效问题,进行水泥浆一次上返单级固井,水泥封固段长度达到了5 765 m。通过分析超长封固段固井难点,研制并应用了大温差水泥浆和相适应的隔离液,辅以配套的固井技术措施,保证了水泥返高和固井质量,为简化井身结构、实现钻井"提速、降本、增效"提供了成功范例。The well Zhonggu514 is a gas well located in Tazhong of Tarim oilfield,and the content of H 2 S is over 50 g/m 3.To prevent stage collar being out of work,single stage cementing job is designed for the cementing length is up to 5,765 m.Adapting to high temperature difference cement slurry,a kind of special spacer fluid is developed,cooperating some technical operating treatments,the cementing quality is good,which also has good effect on simplifying casing program.

关 键 词：超长封固段 大温差 水泥浆 隔离液 中古514井 

分 类 号：TE256.3[石油与天然气工程—油气井工程]