摘要: The invention is a new device for changing the direction of advancement of a borehole being drilled for the discovery or production of oil or gas for example. The new technique involves the inducement of a side force on the bit by... 展开
作者 | Evans, R. F. | ||
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原报告号 | DE86004251 | 总页数 | 21 |
主办者 | Technical Information Center Oak Ridge Tennessee | ||
报告分类号 | [48A - Mineral Industries] | ||
报告类别/文献类型 | DE / NTIS科技报告 | ||
关键词 | Boreholes Directional Drilling Drilling Equipment Design Field Tests |