Drilling and incident treatment for well Xiangyongdi-1
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摘要: 介绍了页岩气基础地质调查湘永地1井的工程概况, 重点阐述了该井的钻探施工工艺及事故处理技术;总结了湘永地1井处理钻井事故的典型案例, 并结合实钻地层及测井数据对钻井施工工艺及实钻效果进行了剖析.湘永地1井完钻井深2224.69m, 完钻口径96mm, 全孔平均岩心采取率98.80%, 采用金刚石绳索取心钻进工艺, 完井各项技术指标均满足地质设计要求.湘永地1井是目前湖南页岩气调查井钻探施工最深的井, 施工中遇到的井漏、烧钻、钻杆折断等孔内事故与复杂问题均得到了很好的解决, 形成了一套页岩气调查井深井钻探工艺及孔内事故处理技术体系.Abstract: The paper introduces the outline of well Xiangyongdi-1 for shale gas geological survey, with emphasis on drilling and incident treatment.This paper summarizes the typical cases of drilling incident treatment in well Xiangyongdi-1 well, and analyzes the drilling process and drilling results in respect of the actual drilling strata and logging data.With the diamond wire-line core drilling technology, every technical index of well completion entirely meets the requirements of geological design.Well Xiangyongdi-1 is the deepest shale gas survey well drilled in Hunan province at present.The incidents and complex problems encountered in the drilling process, such as leakage, burning of bits, drill pipe breakage, etc., have been well solved.With execution of the project, a set of deep-well drilling and in-hole incident treament technology system for shale gas geological survey well has been formed.
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