| 摘要: |
| PDC切削齿尺寸、后倾角和布齿密度是影响PDC钻头性能的重要设计参数。采用室内钻进试验方法,考察切 削齿尺寸、后倾角和布齿密度对PDC钻头破岩效率的影响。结果表明:对可钻性为DI级以下的岩石，直径19 mm切 削齿的破岩效率最高;对可钻性为IV ~ V级的岩石,直径16 mm切削齿的破岩效率最高;采用直径19 mm和16 nun 切削齿时,后倾角为15。左右时的破岩效率最高;随布齿密度增大,破岩效率降低,特别是在可钻性为DI级以下的岩 石中,布齿密度的影响更为明显。 |
| 关键词: PDC钻头 切削齿尺寸 后倾角 布齿密度 破岩效率 |
| DOI： |
| 分类号: |
| 基金项目: |
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| Experiment on effect of cutter parameters of PDC bit on rate of penetration |
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ZOU De-yong, CAI Huan
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(College of Petroleum Engineering in China University of Petroleum, Dongying 2570619 China)
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| Abstract: |
| PDC cutter size，back rake and density are very important design parameters affecting the performance of PDC bit. The effects of PDC cutter's size, back rake,and density on the rate of penetration( ROP) of PDC bit were researched through room drilling experiment. The results show that the ROP of the PDC bit designed with cutters diameter of 19 mm is the highest in the rock whose drillability grade is HI. But in the rock whose drillability grade is IV - V , the ROP of the PDC bit designed with cutters diameter of 16 mm is the highest. When the PDC bits designed with cutters diameter of 19 mm and 16 mm are used，the highest ROP is obtained in the back rake about 15°. In the rock whose drillability grade is ID , the ROP decreases with the PDC cutter density increasing，and the effect is obvious. |
| Key words: PDC bit cutter size back rake cutter density rate of penetration |
