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近年来 ,大斜度、大位移井越来越多 ,加之复合导向钻井技术及高效PDC钻头新技术的应用 ,使单只钻头进尺不断提高 ,机械钻速越来越快 ,如岔河集地区下部井段最高进尺达 6 0 0m/d。由于单只钻头进尺长 ,未采取短程起下钻刮拉井壁以及充分循环洗井、划眼等有效措施清除虚泥饼 ,所
In recent years, there are more and more large-angle and large-displacement wells. Combined with the application of composite pilot drilling technology and new efficient PDC bit technology, the drilling rate of single drill bits is continuously increased and the ROP speed is getting faster and faster. For example, The highest section of well section reached 600m / d. Due to the length of a single drill into the long, did not take a short cut from the drilling and scraping the well wall and fully circulating well washing, scribing and other effective measures to remove the mud cake, the