underground air

用法例句

As to high pressure and high production gas wells the application of subsurface choke could decrease the pressure of surface line, prevent hydrate formation, cancel surface heating equipment and increase fluid carriage.

通过节点分析方法,考虑井下节流节点,对井下气嘴进行优化,同时对井下与地面气嘴节流的相关性进行分析。

Modified model of calculating minimum flow in air drilling;

空气钻井最小流量计算的修正模型

Application of PDC bits in air drilling of Puguang-10 well;

PDC钻头在普光10井空气钻井中的应用

The influence and countermeasure of air drilling technology on geologging work;

空气钻井技术对地质录井工作的影响及对策

Assessment on Mine Air Quality Using Pollution Loss Rate

污染损失率法评价矿山井下空气质量

New Problems and Resolvents in CBM Well Geological Logging under the Condition of Air Drilling

煤层气井空气钻井条件下地质录井面临的新问题及解决方法

The air flows down to a shaft and thus loses potential energy.

空气向下进入竖井，因而失去势能。

work - over equipment for oil and gas wells

油气井井下作业设备

Calculation of Eccentric Wellbore Pressure Drop and Air Volume Requirements in Air Drilling

空气钻井偏心井筒压力及注气量计算

The Application of Air Heating Units in the Mine Air Heating

空气加热机组在矿井井口空气加热中的应用

Application of Air Hammer in Gas Drilling in Puguang Gasfield

空气锤在普光气田气体钻井中的应用

A small, sunken area allowing access or light and air to basement doors or windows.

采光井允许出入或光线和空气进入地下室门窗的凹陷的小区域

Study of the Discharge of the Drilling Pump Air Chamber under the Influence of the Pump Valve s Delaying Angle;

泵阀滞后角影响下的钻井泵空气包排出管路流量的研究

Research and development of the downhole multiphase pump for wells of high gas-oil ratio

高气油比井井下混抽泵的研究与开发

Application of Misted Air Drilling to Puguang Gasfield

雾化空气钻井技术在普光气田的应用

ABRASION OF EXHAUST PIPE BY THE HIGH-SPEED GAS WITH THE CUTTING IN AIR DRILLING

空气钻井中颗粒对排气管的冲蚀分析

Optimization of annular gas injection technology in coalbed methane aerated under-balanced drilling

煤层气欠平衡钻井环空注气工艺优化

Foul or poisonous gas that sometimes pollutes the air in coal mines.

矿井瓦斯，有毒气体矿井中有时污染空气的恶臭气体或有毒气体

APPLICATION OF AIR FOAM DRILLING TECHNOLOGY IN KENYA GEOTHERMAL WELL

空气泡沫钻井技术在肯尼亚高温地热井的应用

Research on the Numerical Simulation of Gas-well Flow Field with Underground Nozzle;

带井下节流的天然气气井流场的数值模拟

In some cases the difference in atmospheric pressure causes the air to circulate naturally; in others a fan must be used to pump air into the mine.

有些矿井利用大气压力差引起空气自然流动，有些矿井则必须用扇风机把空气压人井内。

A passage for drawing up smoke or air.

上风井，上风烟道发散烟或空气的通道