Mr. Howarth included methane losses associated with flow-back and drill-out processes in hydraulic fracturing and other unconventional gas drilling techniques.
霍沃斯先生将在水力压裂法和其它非传统天然气开采技术中返排和钻出过程中所泄露的甲烷包含在了其计算中。
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。
Core drill machines can be powered by electric hydraulic or air power sources.
核心动力的电动钻机器能、水力和空气动力来源。
The hydraulic seam drill is equipped with the synchronous gear motor as the driving part, which can effectively solve the corrosive problem of the emulsion to the motor body.
乳化液煤层液压钻使用同步马达作为其驱动元件，可有效解决乳化液对马达机体的腐蚀问题。
On the basis of theoretical linear model, the paper studies the influence of input flow on operating parameters of shock mechanism for hydraulic rock drill, and a series of brief formulae are derived.
在理想线性模型的基础上，研究了输入流量对液压凿岩机冲击机构工作参数的影响，得到了一组简明公式。
To drill soft, unconsolidated, usually shallow formations by eroding the "rock" below the bit by hydraulic impact loading alone.
钻进松软、非固结，通常是浅地层时，通过仅仅依靠液力冲击载荷去冲蚀破碎钻头下的岩石。
The structural characteristic and operating principles of KD type hydraulic tap hill drill with folding rotary mechanism are introduced.
详细介绍了KD型转臂折叠式全液压开铁口机的机构组成、工作原理和结构特点。
Leading energy loss of the flow valve in hydraulic rock drill was analyzed and its formula was presented.
分析了液压凿岩机配油阀的主要能量损失，给出了其计算表达式。
Numerical method is proposed for general mechanical impact systems by means of characteristic line theory . Simulation results of hydraulic rock drill are provided .
应用特征线方法，提出了一般冲击机械的波动力学数值计算方法，给出了一液压凿岩机械的数值模拟结果。
Aimed at the problems of MYT type hydraulic anchor-hole drill in use, the ways to improve the operation reliability of the drill were offered.
针对MY T型液压锚杆钻机在使用中存在的问题，提出了提高液压锚杆钻机工作可靠性的几种途径。
According to the drive mechanism and the demand of the hydraulic rock drill, the structure character and the designing ways of the impact device, control valve and supporting arm were introduced.
根据水压凿岩机液压传动原理和使用要求，详细介绍了凿岩机中冲击器、操纵阀和支腿的结构特点和设计方法。
Hydraulic pressure drill tubing divulging.
液压油管泄漏。
The advanced hydraulic system has self-return and drill rod stuck proof implements, which ensure great maneuverability and reliability.
先进的液压系统有自我的回报和钻杆坚持证明实施，确保伟大的机动性和可靠性。
To improve the precision and the efficiency in straightening drill pipes, we make a research in the control system of the automatic hydraulic straightening machine.
为了提高钻具校直的精度与效率，我们进行了全自动液压校直机控制系统的研究。
Planes from the drilling rig, drill pipe to send and entrusted pipe hydraulic cylinder are used, safe and reliable.
钻机的起架、送钻杆、托钻杆均采用了液压油缸，安全可靠。
Crawler hydraulic drill, and USES the new type of hydraulic technology, low gas consumption, rotary torque, move the hole deflection is convenient.
履带式液压钻机，采用新型液压技术，耗气量低，回转扭矩大，移孔变位方便。
Specialized hydraulic equipments and so on production, hydraulic ram, screw swinging cylinder, drill jumbo.
专业生产、液压油缸、螺旋摆动油缸、凿岩台车等液压设备。
To achieve high efficiency energy - saving, the hydraulic design of technological innovation is applied to the light down the hole drill.
将液压设计技术创新性地应用于轻型潜孔钻机中，实现高效节能。
The energy loss of the impact mechanism of hydraulic rock drill greatly affects drilling efficiency when it operates.
液压凿岩机工作时，冲击机构的能量损失对其效率有很大的影响。
Most rotating chassis and winch (or hoist) systems of domestic drill rigs are driven by hydraulic transmission in the 90's.
90年代以来，国内研究制造的大扭矩转盘式工程钻机基本上都采用液压传动方式驱动转盘和卷扬（或提升）系统。
The 1~(st) domestic hydraulic umbrella drill is therefore introduced to accelerate drilling velocity with obvious effect as a new breakthrough for drilling and blasting.
为了更好地加快施工进度，在打眼爆破方面要有新的突破，引进国内首台液压伞钻，大大提高了的打眼速度，效果显著。
By the comprehensive analysis and comparison to various working mechanism of the hydraulic impactor, the design decision of the article is definited as pressure feedback hydraulic heavy drill.
通过对各种工作机理的液压凿岩机全面分析，确定为压力反馈式全液压重型凿岩机。
Abstract: This paper introduces the development and using of the MK series of fully hydraulic drill, and compares its using effect with LMC75 drill from Australia, LHD drill from America.
文摘：介绍MK系列全液压钻机的开发和应用，并就其使用效果和澳大利亚lmc75、美国的LHD钻机展开比较。
According to the analysis, it is showed that drill bit design should be combined with hydraulic character of the flow field.
分析表明，钻头的设计应当充分结合其水力学特性进行，对此本文给出了所计算钻头的优化设计建议。
The commonly used hydraulic seal test and air-tight test for the closed plastic container need to drill a hole on the container body. After test, the container is wasted.
闭口塑料容器一直采用桶身钻孔进行液压和气密试验，浪费较大。
The article particularizes the theory, configuration and use ways of turnover drill press clamp under the control of PLC. And finally shows the trapezoid drawing of PLC and hydraulic pressure chart.
详细说明了基于P LC控制的自动翻转夹具的原理、结构和使用方法，并结合实例给出了PLC的梯形图和液压原理图。
This paper introduces the development and using of the MK series of fully hydraulic drill, and compares its using effect with LMC75 drill from Australia, LHD drill from America.
介绍MK系列全液压钻机的开发和应用，并就其使用效果和澳大利亚lmc75、美国的LHD钻机展开比较。
Equipped with hydraulic holder and hand powered unscrewer, to untighen the drill rod easily.
附设液压夹持器，并配以手动御扣装置，使拆御钻杆更方便。
Equipped with hydraulic holder and hand powered unscrewer, to untighen the drill rod easily.
附设液压夹持器，并配以手动御扣装置，使拆御钻杆更方便。
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