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- Rotary drilling equipment; Upper and lower Kelly cocks 旋转钻井设备。方钻杆上旋阀和下旋阀
- Petroleum and natural gas industries - Rotary drilling equipment - Part 1: Specification for rotary drilling equipment 旋转钻井设备-第1部分:旋转钻井装置规范
- rotary drilling equipment 旋挖钻机
- The mast assem-bly supports the rotary drill head and its hoisting mechanism. 支架组件支持转动钻头及其提升机构。
- The company has a new car, milling, planing, grinding and drilling equipment. 公司拥有全新车、铣、刨、磨、钻设备。
- The LB 28 large rotary drilling rig is an ideal complement to the LRB combined piling and drilling rigs. LB28大型旋转钻机是LRB组合打桩和钻孔机器的理想补充。
- With expert chassis of Rotary drilling rig and strong box type mast, it has high working stability. 应用徐工成熟技术制造的旋挖钻机底盘，结实的箱型臂架，具有超强稳定性；
- The forming mechanism of the bias force is the key to the study of the modulated steerable rotary drilling system. 导向力的形成机理是研制旋转导向工具的核心。
- In modern rotary drilling, especially formulated mud is used in the well to keep the reservoir fluids in place, among other functions. 在现代旋转钻探作业中,经特殊配制的泥浆的功用之一就是使油井中储集层流体保持在原位不动。
- However, the SEP in diamond rotary drilling was higher than the SEP in percussive drilling in lightly weathered hard as well as in extremely hard rock. 在微风化的坚硬与极坚硬岩石中，金刚石旋转钻进比功则明显高于冲击凿碎比功。
- External reach extensions, as well as special attachments including pile-drivers and drilling equipment, are frequently required for such applications. 这些应用经常需要外接伸长延伸件,以及专用工作装置,包括打桩机及钻孔设备等。
- SR360 rotary drilling when drilling play in the construction of the largest pebbles are more than 50 cm, geological strength 1200 kPa. SR360旋挖钻在施工时打出的最大的卵石有50多公分，地质强度达到1200千帕。
- An example of friction calculation shows that the calculation results provide a basis for the selection of drilling equipment, opt... 实例计算分析表明，摩擦阻力计算结果可为钻井设备选型、优化管柱参数和井身结构以及选择下入方式提供可靠依据。
- The paper introduced the use of airlifting reverse circulation rotary drilling techniques in practice of major diameter socket pile operation at Xiangfan city s Hanjiang No. 介绍了使用泥浆护壁气举反循环回转钻进工艺进行襄樊汉江四桥大口径嵌岩桩的施工实践。
- The sticking steel is one common trouble of drilling equipment and an important cause effecting the high efficiency and high quality drilling of hydraulic drill. 卡杆现象是穿孔设备常见的故障之一，是影响液压凿岩钻机高效率、高质量穿孔的重要原因。
- Researches indicate that the new type of DTH hammer without drilling machine can make DTH hammer achieve percussive and rotary drilling using air compressor. 借鉴凿岩机的转钎机构,利用活塞的回程能量带动钻头旋转。
- Based on analysis of application prospects of rotary drilling in petroleum drilling, this paper presents the structure and working principle of the new hydraulic kicker. 在分析了冲击旋转钻井技术在石油钻井中的应用前景的基础上，介绍了新型液动冲击器结构及工作原理；
- In the course of transmission, mud pulse signal mainly disturbed by drilling pump,engine in the bottom hole, air bladder contained in mud and movement of drilling equipment. 泥浆脉冲信号在传输过程中主要受钻探泵、井底动力机、泥浆中的气泡及活动钻具的干扰;
- We are Hebei Zhankui Drill Equipment Company in China.We mainly supply new and used tricone bits,drill pipe,PDC bits.... 查看“机械及工业制品-行业专用机械设备-建筑机械”:公司信息商品信息供应信息
- Founded in early 2006, the main business: oil drilling equipment and accessories, oil drilling fluid viscosity reducer, coating agents, fracturing to use oil products sales agents. 公司成立于2006年初,主营业务为:石油钻采设备及配件、石油钻井液用降粘剂、包被剂、采油用压裂转向剂等产品的销售。
