The paper describes a new kind of raising assembly for mechanicaldrilling rigs.
文章绍了用于机械钻机井架起升过程中的一种新型起升装置。
2
By drilling hundreds of Wells, it is proved that those methods effectively improve well quality and mechanicaldrilling speed and are of great value to be applied.
数百口井的实钻证明:这些方法行之有效,使井身质量及机械钻速大大提高,具有极大的推广价值。
3
Ultra-high pressure water jet assisted mechanicaldrilling is known as one of the advanced and promising technology to increase drilling rate for deep oil and gas wells.