新型井下工具在元坝1井的应用

由于元坝1井的陆相地层与海相地层的地质情况复杂，钻井难度大，开展了新型井下工具如BakerHughes大功率螺杆钻具、液压双向减震器、高速涡轮＋孕镶PDC钻头、特殊钻井工具“旁通阀”的应用研究。应用效果表明，采用新工具．钻井周期比总公司要求的340d提前了60．83d，建井周期比钻井工程承包合同规定的546．04d提前了204．64d，全井平均机械钻速比原计划的1．8m／h提高了11．1％，全井最大井斜2．94°，井身质量优质，达到设计要求。

Applications of New Downhole Tools in Well Yuanba-1

Because of geological complexity of nonmarine and marine sequences and Well Yuanba-1 ,applications of several new downhole tools are researched during its power special turbo of Baker Hughes,hydraulic dual-action jar, drilling tool-by pass valve.The application results drilling difficulties in drilling, including high high speed turbo plus insert tooth PDC bit and a of these new tools are as follows ：the 340 days of drilling period required by the Corporation are reduced by 60.83 days,the 546.04 days of well completion period set in the engineering contract reduced by 204.64 days,the 1.8m/h of average cutting rate increased by 11.1%,and the maximum deviation is only 2.94°.Therefore,the well is excellent in borehole quality and has met its planned requirements.