The paper introduces the typical examples for resolving these problems by air-lift reverse circulation drilling technology.
介绍了应用气举反循环钻进工艺解决这些疑难技术问题的成功案例。
Water well drillers may specialize in a specific method of drilling, such as cable, rotary, auger, hammer or reverse circulation drilling.
水井钻井工可能会专注于一个特定的钻探方法，如电缆，旋转，钻，锤或反向循环钻探。
The driller adopts the percussion and reverse circulation drilling pattern, with the higher drilling efficiency and wider formation suitability.
钻机采用了冲击反循环方式，钻进效率高，适应地层面广。
Apply air reverse circulation drilling, appropriate increase length of twofold wall drill tools under certain conditions, may be drilling much deeper.
运用气举反循环钻进，在满足一定条件下适当增加双壁钻具长度即可得到较大钻进孔深。
This paper describes the theory, features and testing results of the air reverse circulation drilling process used in geo physical blast hole drilling.
概述了空气反循环钻进工艺应用于物探爆破孔施工的原理、特点及其试验应用情况。
To solve the problem in the well caused by the stopping of drilling mud at the time of connection, the continuous circulation drilling technology was developed initially in U.
为了解决常规钻井在上扣、卸扣时因停止泥浆循环带来的一系列井下问题，美国最早开发了连续循环钻井技术。
The paper has introduced constructional properties, applicable sphere of pumping reverse circulation drilling, and its technical demands and the reasons of common hitchs and processing methods.
介绍了泵吸反循环钻进的施工特点、适用范围、施工中的技术要求与常见故障的原因及处理方法。
It is loss circulation, stop drilling, circulation.
发生井漏，停止钻进，循环观察。
These factors, which include slurrys preparation, circulation, depuration and so on, would influence drilling speed, bore quality, exertion of pile shaft resistance and base resistance.
泥浆制备、循环、净化等因素的好坏直接影响到钻进速度和成孔质量、桩侧摩阻力及桩端阻力的发挥。
Drilling mud can clean out the cuttings by its circulation, especially for horizontal hole, it can avoid the sand-bed formation and reduce downhole troubles.
泥浆的主要功用之一是通过自身的循环，有效地清除钻孔内破碎下来的岩屑，特别是对于水平孔，可以避免砂床的形成，减少钻孔内的事故。
Based on the historical experience of drilling technology, it is proposed to study the bottom process of large diameter reverse circulation rotary drilling.
根据钻探技术的历史经验，建议应进行大直径反循环回转钻进井底过程的研究。
According to the exploration problems in an open-pit mine, a new drilling method using reverse circulation DTH hammer drill is put forward.
针对露天矿钻探施工中存在的问题，提出了利用贯通式反循环潜孔锤进行施工的新方法。
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。
Due to unstable sea level, drilling by using 6bs counter circulation pump is not very suitable.
在浅海岸边进行钻机作业，由于海平面水位不稳定，采用6BS反循环泵已不合适。
The measures to control construction quality are analyzed, which are used to drill deep holes with normal circulation slewing drilling machine.
分析了正循环回转钻深孔施工的施工方法和要点，提出了施工监理的监理质量控制点及注意事项。
It is a big change to conventional way of drilling mud circulation.
是常规钻井泥浆循环方式的重大变革。
When drilling, it gives big resistance to mud circulation, which is not beneficial to bring up cutting.
常规稳定器在缩径地层起下钻易阻卡，钻进时，泥浆循环阻力大，不利于携岩。
The member of the drilling crew in charge of the mud-processing area during periods of circulation.
泥浆循环期间管理泥浆处理区的井队人员。
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. 4 bridge site.
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 hollow-through DTH hammer drilling techniques with whole hole reverse circulation is adopted, it is proved that this technique can resolve drilling.
贯通式潜孔锤反循环钻进技术是一种先进的钻探方法，适用于复杂地层中的地质勘探以及各类钻孔工程。
It is very important to measure the volume change of mud in mud pit for the safe drilling, the control of well blowout and the lost of circulation.
测量泥浆池中泥浆体积的变化对于安全钻井，控制井涌、井漏具有十分重要的意义。
GCF-20A reverse circulation percussive rotary drill rig is a multi function drill rig with percussive drilling as the main means and rotary drilling as supplemented.
0a型冲击-回转反循环工程钻机是以冲击钻进为主、回转钻进为辅的多功能钻机，可适应软、硬岩石等不同地层钻进的要求。
In the process of drilling, lost circulation can often result in serious drilling accidents, delay the period of drilling and increase the cost of drilling.
钻进过程中，井下泥浆的漏失往往导致严重的钻井事故，从而延长钻井周期，增加钻井成本。
In Yanchang oilfield, serious lost circulation often occur during drilling in Panlong and Zichang areas, directly affect drilling rate.
延长油矿管理局在蟠龙、子长等主生产区经常遇到严重漏失井，直接影响了钻井速度。
There is no circulation in drilling with only a little amount of mud for wall protection without pollution to the environment.
不需要泥浆循环，仅用泥浆护壁，使用泥浆少，不污染环境。
Very severe problems during drilling were circulation loss and borehole collapse because of formation fracture growing, and drilling operation was very difficult.
该气田地层裂缝发育，钻井过程中井漏和井塌问题非常严重，钻井作业十分困难。
According to the situation of drilling lost circulation in Zhongyuan Oilfield, a side hydraulic tool has been designed.
针对中原油田井漏的情况，设计了随钻防漏的侧向水力工具。
The advantages of gas drilling are: high drilling efficiency, effectively controlling formation damage, preventing from lost circulation and adhesive drill pipe sticking.
气体钻井的优点有：钻井效率高、有效保护油气层、防止井漏和黏附卡钻。
Drilling a well in the broken carbonate strata where the pressure gradient is widely different, lost circulation is an important factor that makes the rig time losed.
在压力梯度悬殊的碳酸盐岩破碎地层中钻井，井漏是损失钻机月的重要因素。
Drilling a well in the broken carbonate strata where the pressure gradient is widely different, lost circulation is an important factor that makes the rig time losed.
在压力梯度悬殊的碳酸盐岩破碎地层中钻井，井漏是损失钻机月的重要因素。
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