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- STUDY OF SIDE-CUTTING TEST OF ROLLER CONE BIT 牙轮钻头侧切试验研究
- Proper design of roller cone angle of smooth rolling is the key to obtaining a high accurate wall thickness. 斜轧穿孔机轧辊形状设计十分重要，其中辗轧锥角的正确设计是获得高精度壁厚的关键。
- Emulation research on dynamics of roller cone bit 牙轮钻头动力学特性仿真研究
- The Computer Simulation Model of Three Roller Cone Bit 三牙轮钻头的计算机仿真模型
- Among vacuum brazed diamond tools, diamond bead, diamond core bit and diamond saw blade are patent products in China. 其中钎焊金刚石工具中钎焊串珠、钎焊钻头和钎焊锯片是国家专利产品。
- We can design and sidetrack cut bevel bit,core bit and eccentric bit.We can design and produce apace at the same time according the user's needs. 研究设计各种新型金刚石全面钻进钻头和金刚石取心钻头。
- Keywords roller cone bit sliding bearing hard alloy boriding behavior; 牙轮钻头;滑动轴承;硬质合金;渗硼;性能;
- Run in a diamond core bit. 下金刚石取芯钻头。
- What type of core bit is it? 这是什么型号的取芯钻头?
- Establishment of Lateral Vibration Dynamic Model of Roller Cone Rock Bit and Its Solution 牙轮钻头横向振动模型的建立及求解
- Raising the stability of outer core barrel is the main approach to extend the life of core bit and to raise core recovery and the footage of single core barrel. The outer core barrel with centralizer is an effective method to raise its stability. 提高外筒稳定性是延长取心钻头寿命、提高岩心收获率及单简进尺的最主要途径,而外筒加扶正器是提高其稳定性的有效方法。
- Analysis on Roller Cone Bit Bottom Hole Track Simulation Under Composite Drilling Conditions and Bit Improvement 复合钻井工况下牙轮钻头井底轨迹仿真分析及钻头改进
- The geologist needs to know what rocks the drill has reached, so every so often a sample is obtained with a coring bit. 地质学家需要知道钻头已以到达什么样的岩层,因此时常要用芯钻头取样。
- The hard core in the party make all the decisions. 这个党的核心成员决定一切。
- Laboratory study of core bit whirling 取心钻头涡动的室内实验研究
- Geologist so every so often The geologist needs to know what rocks the drill has reached, so every so often a sample is obtained with a coring bit. 地质学家需要知道钻头已经到达什么样的岩层,因此时常要用取芯钻头取样。
- The boy gobbled up an ice-cream cone. 那个男孩大口大口地吃完了一个蛋卷冰淇淋。
- A New Kind of Stub Apply to the Core Bit 一种新型齿柱在密闭PDC取心钻头上的应用
- This concept is at the very core of her theory. 这个概念是她理论的核心。
- The ride on the roller coaster dizzied us. 乘坐云霄飞车使我们头晕。
