油基解卡液处理粘附卡钻事故的分析与应用

Analysis on Sticking Accident Treatment by Oil-based Sticking Releasing Agent and the Application

摘要:

深井钻探技术发展到现在有了突飞猛进的提高，而且日趋成熟。但地热井在施工过程中，经常发生一些孔内事故在所难免。发生事故以后需认真分析事故发生的原因，尽快制定针对性的处理方案和程序，科学合理地去处理。以晋中一个经常发生孔内粘附卡钻事故的地热井施工为工程实例，分析了发生粘附卡钻事故的诸多原因，制定出处理粘附卡钻事故的方法。通过解卡机理，设定油基解卡液的性能和配置方法，准确进行注入量计算，在注入时掌握技术工艺要点，获得了良好的处理粘附卡钻事故的效果。

Abstract:

The deep well drilling technology has a rapid development nowadays and becomes more mature. But some downhole accidents still inevitably happen in the construction process of geothermal wells. The accident causes should be seriously and carefully analyzed to develop target treatment programs and procedures for scientific and reasonable treatment. Taking the frequent hole sticking accident of geothermal well construction in Jinzhong as an engineering case, the paper analyzed different accident causes and worked out the sticking accident treatment methods. Based on the releasing mechanism, the performance of oil-based sticking releasing agent and configuration method were set up, injection volume was accurately calculated and key points of the injection technology were mastered in the operation, good effect of treatment was received.