shaft enlargement

Research on safety and economic operation of main ventilator for mine reconstruction;

改扩建矿井主要通风机安全经济运行研究

Flow experiment of circulative micro-foam drilling fluid in well bore under HTHP conditions;

井筒中高温高压可循环微泡沫钻井液流动实验

The dynamics simulation of rotating rod string in well bore;

井筒内旋转抽油杆柱动力学仿真

Analysis result of high productivity gas wells in Luojiazhai shows temperature effect of well bore as the key factor affecting well head pressure.

罗家寨高产气井测试分析结果认为井筒的温度效应是影响井口压力的关键因素。

Development and application of multi-function process tubing string used for reducing liquid level in wellbore;

多功能井筒降液面工艺管柱研制与应用

Technology of blending diluting oil in ultra-deep wellbore of Tahe Oilfield;

塔河油田超深井井筒掺稀降粘技术研究

Mathematical Model of Wellbore Hot Fluid Circulation and Its Analytical Solution;

井筒热流体循环的数学模型及其解析解

Code for design of inclined shaft and chambers of coal mine

煤矿矿井斜井井筒及硐室设计规范

Experience on the shrink shaft drilling construction reserve period

缩短立井井筒凿井施工准备期的经验

wellbore storage domination

井筒储存起支配作用

a shaft driven upward is called a raise; one that is driven downward is known as a winze.

从下往上开拓出来的井筒叫天井;从上往下开拓出来的井筒叫盲井。

Technical code for anticorrosion of shaft equipment of vertical shaft of coal mine

煤矿立井井筒装备防腐蚀技术规范

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 Simple Study of Rapid Construction of Auxiliary Shaft in EightBao Coal Mine

八宝煤矿副井井筒快速施工作业浅析

Discussion on Working Platform Arrangement Pattern in Vertical Shaft Construction

立井井筒装备施工吊盘布置方式探讨

Construction technology for auxiliary shaft crosscut in huerxinhe coal mine

霍尔辛赫煤矿副井井筒揭煤施工技术

Vertical Shaft Aquifer Surface Advance Grouting Engineering Technique

立井井筒含水层地面预注浆施工技术

Study on Borehole Tempera Ture Distribution for Ultra-deep Gas Well

超深天然气井井筒温度分布规律研究

NONSTEADY STATE MODEL OF GAS RESERVIOR AND HORIZONTAL WELL WELLBORE COUPLING

水平井井筒和气藏耦合的非稳态模型

Monitoring data analysis of soil grouting reinforcement in vertical shaft

立井井筒地层注浆加固实测数据分析

The ConstructionAnalysis of Anti-Well Method Through Falling Soft Rock Section

反井法施工立井井筒过软岩垮落段实践分析

Rapid Construction Technology of Freezing Well-wide Shaft of New Shanghai No.1 Ventilation Shaft Mine

新上海一号矿风井全井冻结井筒快速施工技术

Prediction of wellbore temperature field and analysis of influence factor for high-pressure gas well kill

高压气井压井井筒温度场预测与影响因素分析

Study and Application of Grouting behind Main Shaft Wall to Ronghua Vertical Shaft

荣华立井主井井筒壁后注浆的研究与运用

Shut-in static pressure calculation of condensate gas wells considering phase behavior change in borehole

考虑井筒相态变化的凝析气井关井静压计算