| 摘要: |
| 试验模拟了切削面积、接触弧长、切削面形状、切削齿后倾角和岩石性能对PDC切削齿破岩受力的影响。结果 表明,采用接触弧长、切削面积和岩石可钻性表征切削面的几何形状和岩石性能与PDC切削齿破岩的实质相符。 |
| 关键词: PDC切削齿 岩石破碎 受力模型 试验研究 |
| DOI： |
| 分类号: |
| 基金项目:十五”国家攻关项目(2003BA613A- 11) |
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| Experimental study on force of PDC cutter breaking rock |
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MAQing-ming1,2,WANG Rui-he1
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(1. College of Petndeum Engineering in China University of Petroleum，Dongying 257061，Shandong Province, China;2. Drilling Technology Research Institute of Shengli Petroleum Administration Bureau，Dongying 257017, Shandcmg Province, China)
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| Abstract: |
| The effects of cutting area, cxaitact arc length, the geometry of cutting face, back dip angle of PDC cutter and rock performance on force of PDC cutter breaking rock were simulated experimentally. The results show that it conforms to the essence of PDC cutter breaking rock that adcpting contact arc length, cutting area and rack drillabillity as the characteristic parameters of the geometry property of cutting face and rock performance. The tangential and positive forces on unit cutting area of PDC cutto increase with the increase of contact arc length, cutting area, back dip angle of PDC cutter and rock drillabillity class. The mathematical relationship between the tangential and positive forces on unit cutting area and the multiplicaticai of cutting area and contact arc length is obvious linear. When back dip angle is less than 10 d堪rees，the force on PDC cutter is relatively less. According to the experimental results, the force model of PDC cutter breaking rock was devdcped. |
| Key words: PDC cutter rock breaking force model experimental study |
