CAJ | 학술논문

元页HF-1井是中石化部署在川东北元坝区块的第一口页岩气预探水平井。通过分析该井的工程地质难点，优化了三开次井身结构，优选出合理的钻井方式、钻井液体系和配套工艺措施，形成了一套适合该区块的页岩气水平井钻井技术方案。该井成功钻达目的层，完钻井深4982 m，水平位移1421.73 m，钻井周期168.88 d，平均机械钻速3.07 m/h，三开井径扩大率仅为4.82％，取得良好的应用效果，为元坝区块页岩气的勘探开发提供了技术支撑
원혈HF-1정시중석화부서재천동북원패구괴적제일구혈암기예탐수평정。통과분석해정적공정지질난점，우화료삼개차정신결구，우선출합리적찬정방식、찬정액체계화배투공예조시，형성료일투괄합해구괴적혈암기수평정찬정기술방안。해정성공찬체목적층，완찬정심4982 m，수평위이1421.73 m，찬정주기168.88 d，평균궤계찬속3.07 m/h，삼개정경확대솔부위4.82％，취득량호적응용효과，위원패구괴혈암기적감탐개발제공료기술지탱
Yuanye HF-1 is the first shale gas pre-exploration horizontal well in Yuanba block of Northeastern Sichuan. Based on the analysis on the difficult points in engineering geology, the third spud section structure was optimized;rational drilling method, drilling fluid system and drilling process measures are selected to form a set of shale gas horizontal well drilling technical scheme suitable for this area.The well is drilled to the objective layer with drilled depth of 4982m, hori-zontal displacement of 1421.73mm, drilling cycle of 168.88d, average penetration rate of 3.07m/h and the three open well diameter enlargement ratio is only 4.82%.