Stress analysis of four-leg K type derrick and its substructure during the integral hoisting of the derrick;
起升中四腿落地式K型井架及底座的应力分析
The analysis of FEM simulation of raising of derrick;
井架起升过程的有限元仿真分析
Method for calculating Stability of solid axis pressure bar used on derricks;
井架实腹式轴心压杆稳定性计算新方法
To evaluate the safety bearing capacity of drilling derrick, a novel method is proposed based on frequency and load descending coefficient by the research of vibratipn theory, finite element model and experimental analysis of simple model of drilling derrick.
通过井架结构振动理论、有限元分析和实验室简易模型的试验研究,提出了以振动频率为基准,载荷下降系数为依据诊断钻井井架结构安全承载能力的方法。
Three kinds of drilling derricks for drilling a well of 3200 meters are used at present, including tower shape, K shape and A shape.
对在用的３２００ｍ钻机的塔型、Ａ型和Ｋ型井架抗扭特性进行了分析，以满足正在发展的顶驱钻机的需要。
The principle of the predominance in the design for the mast;
井架结构设计中的优势原则
Procedures for manufacturing the type JJ450 mast of the offshore drilling rig;
JJ450型海洋钻机井架制造工艺
Calculation of Static Stress and Stability of Model JJ225/43-K Mast;
JJ225/43-K石油钻机井架强度及稳定性计算
"drilling rig, platform"
"钻井井架,钻井平台,见 oil (drilling) rig"
bald-headed derrick
无天车工作平台的井架
stacking capacity of derrick
井架的钻杆立根容量
leg base anchorage
井架大腿底脚的固定
self-gured structural mast
自带绷绳的轻便井架
free standing mast
不用绷绳的轻便井架
outside monkey board
折叠式井架外侧二层台
On the Derrick Installation of ShaftⅣ_G In main Shaft of a Coalmine
浅谈塔然高勒煤矿主井IV_G凿井井架安装
The Intensity Testing of Main Well Headframe in Dai Zhuang Mine Shangdong
山东岱庄生建煤矿主井井架强度检验
A finite element analysis of headframe intensity of 40-ton workover rig;
40t修井机井架强度的有限元分析
Here and there at long distances upon the canon sides rose the headframes of a mine.
峡谷两侧，一路过去，到处屹立着矿井井架。
Research on the Influence of Frost Heave of Frozen Soil to Derrick Footing in Freezing Sinking Shaft;
冻结法凿井冻土冻胀对井架基础影响的研究
The Designing of Observing Zhangbei s Chief Mine s Headframe s Base s Subsidence and Deformation;
张北主井井架基础沉降及变形观测设计
Study on the Subsidence Monitoring of Main and Auxiliary Shaft Headframe Foundations of WOLONG LAKE Coal Mine
卧龙湖煤矿主副井井架基础沉降监测研究
New construction technology of setting large steel-structure shaft frame during shaft sinking
凿井期间起立大型钢结构井架施工新技术
Application of the high tensile material to the substructure of the super-deep well's rig derrick
高强度材料在超深井钻机井架底座中的应用
Preliminary Study on Well Drilling Technique of Semi-Submersible Drilling Platform with Dual Derrick Rig
半潜式钻井平台双井架钻机作业工艺初步研究
Analysis of Stress and Distortion of Derrick With Fem
石油修井机井架的有限元应力应变分析
