切削结构 Cutting Structure | 外排卵圆形齿，内排锥形齿设计 适用于高抗压强度、中硬和研磨性高的地层，如石灰岩、砂岩、白云石、燧石等。适用于岩石等级:29,000-38,000磅每平方英寸(200-260MPa) Gauge rows are ovoid type and inner rows are conical type: Designed for medium hard and abrasive formation with high compressive strengths such as limestone sandstone,dolomite and chert. Application:29,000-38000PSI(200-260MPa) |
牙掌保护 Shirttail Protection | 掌背镶嵌双排硬质合金齿，掌侧堆焊附磨硬质合金 Two rows tungsten carbide on the shirttail;Wear resistant carbide on the side of lug |
产品参数 Product Specification | IADC编码:645/642 轴承结构:滚柱-滚珠-滚柱一止推块/密封/非密封 循环方式:喷气式 切削结构:-内排齿和顶齿:锥形齿-外排齿:卵圆形齿 -背齿:圆形齿 螺纹连接: 4 1/2″API 钻头直径:200mm IADC Code:645/642 BearingType:Roller-Ball-Roller-Thrust Button/Sealed bearing/Open bearing Circulation Type: Jet Air Cutting Structure:-Inner and Nose rows:Conical -Gauge rows:Ovoid -Heel rows:round Pin Connection:4 1/2”API Bit Diameter:200mm(7 7/8”) Product Weight:34KG(75Lbs) |
操作建议 Operating Suggestions | 钻压:23630-47250 Lbs 转速:100-60RPM 空气回压:0.2-0.4MPa WeightonBit:23630-47250Lbs Rotary Speed:100-60RPM Air Back Pressure:0.2-0.4MPa |
