沙溪庙组硬质砂岩地层异形PDC齿的设计与研究
马亚超,罗逸非,荣准,陶垒,曾汇川,蒋东,张文远

Design and study of special-shaped PDC cutter for hard sandstone strata of Shaximiao Formation
Yachao MA,Yifei LUO,Zhun RONG,Lei TAO,Huichuan ZENG,Dong JIANG,Wenyuan ZHANG
表1 PDC齿与沙溪庙组砂岩的材料参数
Table 1 Material parameters of PDC cutter and sandstone of Shaximiao Formation
材料弹性模量/GPa

密度/

(g/cm3)

热导率/

[W/(m·℃)]

比热容/

[J/(kg·℃)]

热膨胀系数/(℃)-1泊松比内摩擦角/（°）黏聚力/MPa
PDC890.003.51543.07902.5×10-60.070
硬质合金579.0015.00100.02305.2×10-60.220
砂岩43.552.713.58005.2×10-70.2084927.43