表 1 Table 15LZ165X7。0Y BH5LZ165X14.0 BH q = 8。55LZ197X7.0Y BH5LZ197X14.0 BH q= 14。05LZ120X7.0Y BH q = 5。05LZ95X7。0Y BH q = 2。64．螺杆钻具型号说明 4. Model Number表 2 钻具故障分析表 Troubleshooting Table 2Problems异常现象Possible Causes可能原因Troubleshooting推断及处理方法gauge pressureloss sudden rise压力表压力突然升高Motor speed loss马达失速Lift Screw Drill for 0.3—0.6m ， examine recycling pressure, slowly enhance drilling weight .If gauge pressure rises accordingly in normal condition ， the problem is speed loss.把钻具上升 0。3—0.6 m，核对循环压力,逐步加钻压，压力表随之逐步升高，均正常，可确认是失速。Motor drive shaft sticked tightly and bit nozzle plugged马达传动轴卡死，钻头水眼被堵Lift bit away from the bottom 。. If gauge pressure is still too high， only lift out the drill for checking or to change the bit.把钻头提离井底，压力表读数仍很高，只能提出钻具检查或更换钻头。Gauge pressure slowly increasing (not means increase of the normal pressure loss with the increase of drilling depthBit nozzle plugged钻头水眼被堵Lift bit away from the bottom ， again examine the pressure. If the pressure is still over recycling pressure， try to improve recycling flow rate or to move the drill pipe up and down。 If it is not solved， only lift out the drill for repair or change.把钻头提离井底，再检查压力，假如压力仍然高于正常循环压力，可以试着改善循环流量或上下移动钻杆，如无效只得取出修理、更换。1、前言 上海奥森油田服务有限公司为渤海石油有限公司（天津）钻井部提供螺杆钻具设备服务，与此同时联同各油田、科研院所，在消化国内外先进技术，结合我国国情的基础上，开发和制造出多种型号的螺杆钻具，能为油田提供满意服务。本手册主要介绍螺杆钻具的性能和使用要求以及注意事项，便于用户更好地了解我公司的钻具，结合钻井的需要，选好、用好、维护好钻具，发挥其应有的技术性能，提高钻井经济效益。2．螺杆钻具工作原理螺杆钻具是以泥浆为动...
