丝袜足控免费网站xx网站_神马一区二区影院_av在线播放国产_二区中文字幕_成人精品动漫_久久免费99精品久久久久久_色婷婷综合久色

•  Case histories
•  MWD sensors
•  Log examples
•  Service implementation


Symptoms of Poor Drilling Performance
• High or fluctuating torque
• Sticking pipe (overpulls)
• Bit balling
• Poor directional control
• Inconsistent (slow) ROP
• Intermittent MWD signal
• Poor MWD, motor or bit performance
(MTBF/broken cutters)
• Washouts, twist-offs or fatigue cracks
(frequent inspections)
• Lost circulation
• Enlarged boreholes
• Flat / eccentric wear on collars or drillpipe