near-well zone

Concrete shaft lining deformation monitoring in thick alluvium region and grey model forecast;

深厚表土层地区混凝土井壁变形监测及灰色模型预测

Study on variation of vertical additional force on shaft lining by simulation tests;

井壁竖直附加力变化规律模拟试验研究

Fuzzy integrative evaluation of shaft lining under complicated loads in thick alluvium;

深表土复杂荷载条件立井井壁可靠性的模糊综合评价

Dynamic simulation of the contact between drill stem and well wall;

钻柱与井壁接触的动态仿真分析

Many factors can influence stability of well wall in the area of petroleum drilling engineering.

在石油钻井工程中,影响井壁稳定性的因素较多。

This paper is aimed to study the forecast method for shaft wall rupture.

分析了深立井井壁破裂的力学机理,研究了深立井井壁的应力分布规律在井壁破裂预测方面的具体运用,结合混凝土井壁的强度准则和矿区地下水下降的规律,建立了立井井壁破裂的预测理论。

Analysed the reasons for auxiliary shaft wall broken under construction of Qinan Mine auxiliary shaft.

针对淮北矿务局祁南矿副井井筒施工期间出现内层井壁破裂的情况，对冻结井壁的受力特点以及井壁的竖向荷载进行分析计算。

By using high-pressure direct shear apparatus and triaxial electro-hydraulic servocontrolled testing system, as well as soil-concrete samples contained an interface modeling the contact surface between soil and shaft wall, the mechanical parameters of interaction between clay or sand soil and shaft wall sunk by the freeze method at great depth have been measured.

利用高压直剪仪和三轴电液伺服机，采用模拟土与井壁接触面的土加砼混合试样，测得了在大埋深条件下，粘土和砂土与冻结法成井井壁相互作用力学参数大小。

Investigation of shaft well failure mechanism through structure analysis;

用结构分析方法探索井壁破坏的机理

On the injecting strengthen thick surface soil methods managing the crack of shaft sidewall;

注浆加固厚表土层法治理立井井壁破裂的浅析

Damage form research of shaft sidewall under local load

局部荷载作用下立井井壁破坏形式研究

A sidewall stability is is a significant subject in drilling engineering .

井壁稳定性问题是石油钻井工业面临的一个重大课题。

660m depthdrilling shaft lining structure design and analysis of main shaft Ban Ji mine

板集主井660m深钻井井壁结构设计分析

Design Optimization of Drilled Shaft Lining Structure in 1000m Deep Shaft

千米深井钻井法凿井井壁结构设计优化

disk wall liner hanger

盘形井壁衬管悬挂器

continuous sidewall core cutter

连续式井壁岩心切割器

hydraulic wall scraper

液压井壁泥饼清除器

hookwall compression-set packer

井壁式压缩座封封隔器

hydraulic expansion wall scraper

液压扩张的井壁刮刀

recipro wall cleaner

上下活动式井壁刮针

gas generated press sidewall coring tool

产气压入式井壁取心器

hard rock coring tool

坚硬岩石井壁取心器

electrically driven rotary sidewall sampler

电动钻进式井壁取心器

Early grouting mechanism and application between thick freezing shaft walls

深厚冻结井壁壁间前注浆机理与应用

A framework to support or strengthen a mine or shaft

井壁基架用来支承或加固矿井的构筑

Three-dimensional Numerical Simulation of Shaft Wall Temperature Stress;

立井井壁温度应力三维数值模拟分析

Study on Wellbore Stability Technique of Daqingzijing Area in Jilin Oil Field;

吉林大情字井地区井壁稳定技术研究

The Method Research of Well-bore Stability Evaluation in Shale by Logging

泥页岩井壁稳定性测井评价方法探讨

Study on Vertical Structural Stability of a Super-deep Drilled Shaft in Slurry

泥浆中超深钻井井壁竖向稳定性分析

Analysis of Horizontal Open Hole Stability in Tainan Gas Field

台南气田水平井裸眼井壁稳定性分析