| 1. | Rock drillability measurement and its classification
岩石可钻性测定及分级方法 |
| 2. | Fractal representation of rock drillability
地层岩石可钻性的分形表示方法 |
| 3. | Researches on a new classification method of rock drillability
一种新的岩石可钻性分级方法研究 |
| 4. | Classification of the drillability of stone by means of micro - drilling
微钻法进行岩石可钻性分级 |
| 5. | Feasibility analysis of fractal characteristics of rock drillability
岩石可钻性分形法的可行性分析 |
| 6. | A study on the order of mechanical property and drillability of rocks
岩石力学性质及可钻性分级研究 |
| 7. | Fractal theory and it ' s applications on rock drillability forecasting
分形理论及其在地层可钻性预测中的应用 |
| 8. | Drillability test study under modeling conditions of bottom hole stress
模拟井底应力条件下的岩石可钻性实验研究 |
| 9. | Testing study on rock drillability evaluation by acoustic velocity of cutting
岩屑声波法评价岩石可钻性的试验研究 |
| 10. | Research on rock drillability predicted by log data on the basis of gray gm algorithm
法的测井预测岩石可钻性研究 |
