论文部分内容阅读
当前钻探工作领域日益扩大、工作量日益增加,而钻孔质量和经济效果远远适应不了四化的需要,必须结合我国国情选择最有前途,能很快提高生产力的项目作为主攻方向,至关重要。笔者认为:岩心钻探技术的主攻方向是井底无杆电钻或称软管电钻。国外软菅电钻主要用在石油钻井。石油钻井口径大、孔深、主要是全面钻进,碎岩功率大;为排粉、冷却钻头以及抑制井喷等特殊工艺的需要必须从地表泵送高比重、大泵量泥浆,
At present, the field of drilling work is expanding and the workload is increasing day by day. However, the quality and economic effect of drilling can not meet the needs of the four modernizations. We must select the most promising project that can quickly improve productivity in our country as the main direction, important. The author thinks: Core drilling technology is the main direction of drilling rodless drill or hose drill. Foreign soft Jian electric drill is mainly used in oil drilling. Oil drilling large diameter, deep hole, mainly full drilling, broken rock power; for powder discharge, cooling the drill bit and the need to suppress blowout and other special processes must be pumped from the surface of the high specific gravity, large pump mud,