CAJ | 학술논문

在页岩气开发中采用水平井、大位移井和多分支井技术，钻井和完井过程中经常出现钻压传递、泥浆马达滑动钻进、钻柱与完井管柱下入困难等问题。连续压力脉动减阻防卡工具利用泥浆循环压力作为动力，采用螺杆结构有效进行压力能与机械能转化，打破静态摩擦状态并消除扭转振动，减少钻具拖压和卡钻现象、提高对工具面的控制能力，增加钻速和钻头寿命。采用理论模拟与室内试验结合的方式验证工具的性能。介绍了连续压力脉动减阻防卡工具的结构、工作原理和应用效果，并提出了使用建议。
재혈암기개발중채용수평정、대위이정화다분지정기술，찬정화완정과정중경상출현찬압전체、니장마체활동찬진、찬주여완정관주하입곤난등문제。련속압력맥동감조방잡공구이용니장순배압력작위동력，채용라간결구유효진행압력능여궤계능전화，타파정태마찰상태병소제뉴전진동，감소찬구타압화잡찬현상、제고대공구면적공제능력，증가찬속화찬두수명。채용이론모의여실내시험결합적방식험증공구적성능。개소료련속압력맥동감조방잡공구적결구、공작원리화응용효과，병제출료사용건의。
The sound momentum of shale gas development makes increasing numbers of horizontal wells,extended reach wells,and multilateral wells,which have great difficulty in passing down ax-ial pressure,sliding and pushing mud motor,and drilling.A continuous pressure pulsation tool was developed,and the effects by theory simulation and laboratory tests were verified.The contin-uous pressure pulsation tool powered by mud pressure transfers pressure to mechanical energy with screw structure,and achieves sustainable pulsation of tool body to break the static friction and eliminates the torsional vibration.The tool can reduce drag pressure and sticking of drill string,improve the control of drilling bit and increase the drilling rate and the bit life.The struc-ture and application effect of the tool is discussed,and suggestions of field application are provided.