大庆油田古龙1井套管柱设计方法分析及优选

Analysis and Optimization of Casing String Design for Well Gulong 1 of Daqing Oil Field

针对目前大庆油田最深的一口风险探井——古龙1井,为了使套管满足空气钻井和经济性需要,首次使用组合套管柱设计方法,同时在设计中对套管强度进行三轴应力强度校核,分析了套管强度设计的误差,给出一套新的安全经济的套管柱设计方法,为以后超深井套管柱设计提供了一个新的思路,对于指导设计与现场施工具有重要的意义。

In order to meet the need for air drilling and economy, combined casing string design was firstly applied in well Gulong 1, which is the deepest risk exploration well of Daqing oil field. At the same time, tri-axial stress intensity check was made on the case design and the errors in the intensity design were analyzed with a new set of safe and economic casing string design method.