api 4 1/2" 钢齿钻头全开中心 8 3/4"三牙轮钻头
基本参数
钻头尺寸 8 3/4"(222MM)
IADC 代码 127
齿型钢/磨齿
轴承类型 弹性体密封轴承
连接 4 1/2"API reg pin
转速(rpm) 180~80
钻头重量(KN/MM) 0.35~1.00
低抗压强度、高可钻性和软地层,如页岩、粘土、盐岩和软石灰岩等。
8 3/4英寸是水井钻探中的常规尺寸,适用于小容量钻机,在世界范围内广泛使用。
钢齿三角钻头又称磨齿三角钻头,可钻软泥岩,甚至软石灰岩,牙轮采用硬质合金硬面,轴承为轴颈并由球锁紧,高级弹性体(橡胶)-HNBR O- 环密封轴承,油脂补偿系统润滑轴承,使用寿命长。
应用
钻井 水 钻井
在线联系供应商
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