CAJ | 학술논문

冲击器是提高深井机械钻速的主要井下工具。针对冲击器核心部件易损坏，寿命短，提速效果不明显等问题，设计了 NPJ-1型高效脉冲射流轴向冲击器。该工具通过水力调节机构使钻头在旋转的同时产生纵向振动，可显著改善钻头与井底附近岩石的受力状况，有效提高机械钻速。通过数值模拟分析，室内强度试验、原理试验，该脉冲射流轴向冲击器工作原理正确，结构简单、可靠，明显提高了钻井速度，且使用寿命长。
충격기시제고심정궤계찬속적주요정하공구。침대충격기핵심부건역손배，수명단，제속효과불명현등문제，설계료 NPJ-1형고효맥충사류축향충격기。해공구통과수력조절궤구사찬두재선전적동시산생종향진동，가현저개선찬두여정저부근암석적수력상황，유효제고궤계찬속。통과수치모의분석，실내강도시험、원리시험，해맥충사류축향충격기공작원리정학，결구간단、가고，명현제고료찬정속도，차사용수명장。
Rock breaking technology is the core technology for oil and gas drilling and the focus of drilling engineering basic research.At present,all kinds of deep shock are main downhole tools of improving ROP.For the problems of current shocks that core components is easily damaged,life is short,speed is not obvious,we designed a new type of pulsed axial impactor.The pulsed axial im-pactor allows longitudinal vibration while rotating through certain hydraulic adjustment mecha-nism can significantly improve the situation of drill bit and downhole nearby rocks and improve drilling speed.By numerical analysis tool strength check,interior strength test and principle ex-periment,the pulse jet axial impact device works properly,have reliable structure,and achieve the aim of a simple structure,no wearing parts were found,meeting the basic requirements for extend-ed service life.