The paper describes a new kind of raising assembly for mechanical drilling 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。
By drilling hundreds of Wells, it is proved that those methods effectively improve well quality and mechanical drilling 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。
Ultra-high pressure water jet assisted mechanical drilling is known as one of the advanced and promising technology to increase drilling rate for deep oil and gas wells.
超高压射流辅助机械破岩钻井是提高深井钻井速度的一项前沿技术，关键技术包括井下增压器、超高压射流辅助破岩机理和钻头、超高压射流钻井参数和工艺等。
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