well drilling

The dynamic characteristics analysis is made for the derrick structure of the offshore drilling rig in some well drilling companies. This paper mainly deals with simulation and stability analysis and simplifies each member as three-dimensional beam unit with finite element method.

对在役海洋石油钻机井架进行了结构动力特性分析，并采用有限元法将钻机井架各杆件简化为空间梁单元，对钻机井架三维计算模型进行了离散，给出了模态分析和稳定性分析结果。

It will become the leading technology in the shallow sea oilfield well drilling technology.

它将成为滩海油田钻井技术中的主导技术.

Drilling fluid technology of bi-lateral horizontal& Well Jing 31-59

静31-59双分支侧钻水平井钻井液技术

This article entirely introduces the marked economic benefits and social benefits of the technology over these years, also discusses the instant requirements of recent years from deep water well and geothermal well drilling contractors.

就多年来所取得的显著经济效益及社会效益进行了全面介绍，并对近年来深水井、地热井施工单位对此项技术的迫切需求加以论述。

In drilling exploration and well drilling Industry, the drilling pipe and drill collar are key apparatus.

钻杆和钻铤等管状螺纹连接件,是钻探和石油钻井工业中的关键设备.

In well-drilling project, corrosion of drill steel and pipeline is ubiquitous phenomena.

油田钻具和管道系统腐蚀是油田工程中普遍存在的问题.

During the oil-gas well drilling process there is plenty of water from drilling polluting the environment.

油气井钻探过程中产生大量钻井废水,会对环境产生污染.

CZ-1200 percussion drill was developed to improve and perfect the performances and structures of CZ-22 cable percussion Rig used in diaphragm wall, bored pile and water well drilling engineering in China.

针对目前国内防渗墙、灌注桩桩孔施工及水井钻凿的主要设备CZ-22型钢绳冲击式钻机在使用过程中的一些不足之处，研制开发了CZ-1200型冲击钻机。

In the throttle control box available, standpipe pressure is controlled by hand with lower accurate, by which underbalanced well drilling is hard to be performed.

现用节控箱采用手工控制立管压力（套管压力）的方法，精度较低，很难实现真正意义上的欠平衡钻井。

Well drilling for deep evaporite beds is a big problem faced by drilling sector.

深部盐膏层钻井是钻井工程重大技术难题之一.

The synthetic method of potassium methyl silicate and its application in oil-well drilling were investigated.

研究了甲基硅酸钾的合成方法及其在油田钻井中的应用.

A new throttle control box with computer servo control is used to regulate the underbalanced well drilling pressure, by which shortcomings of original control equipment and manual method are eliminated.

采用计算机伺服控制研制的节控箱来控制欠平衡钻井压力，克服了原有控制设备及手工控制方法的不足。

If pre-drilling mode was taken in an offshore oil development, PGB-free well drilling technology might be adopted for supplementary wells when the PGB slots were totally occupied.

采用预钻井方式开发的海上油气田，对水下钻井基盘钻井槽孔用完后增钻的调整井，可采用无基盘钻井方式作业。

In CBM well drilling construction, oil drilling techniques are basically adopted.

在煤层气钻井施工中, 基本上采用石油钻井工艺.

The formulas can be used in calculating hydraulic parameters in directional well drilling engineering.

为定向井、水平井钻井水力参效设计和计算提供了新的理论基础。

The jet action can largely improve ROP during oil gas well drilling.

在油气井钻进过程中,射流对井底的作用可大幅度提高钻速.

Therefore lost circulation has always been an urgent technical problem in the process of well drilling.

所以,井漏一直是钻井工作中亟需解决的技术难题.

Correct use of rate of penetration will give many aids to mud logging and well drilling.

正确应用钻时,能够给录井和钻井施工提供很多帮助.

Chinese workers used the ancient Chinese well-drilling method in the railroad construction to settle problems.

这是当时华工运用的在筑路中解决了大难题的中国古代钻井法.

The demands are a fresh example of how BP continues to be overshadowed by the disaster, caused when a well it was drilling blew out, killing 11 men and triggering the worst oil spill in US history.

最新的索赔要求鲜明地反映出，英国石油仍受到这起灾难的影响。当时，英国石油的一处钻井平台发生爆炸，导致11人死亡并引发美国历史上最严重的原油泄漏事故。

Experimental Research on Reverse Circulation Drilling with Through-type DTH Hammer for Water Well Drilling in Karst Strata

贯通式潜孔锤在岩溶地层反循环水文水井钻进试验研究

The Multiple Simulating Test Installation of the Full-Scale Well Drilling of PC Controlled

PC控制的全尺寸钻井综合模拟试验装置

Application of Technical Logging in Drilling Accident and Old Well Maintenance

工程技术测井在钻探事故和旧井维修中的应用

An Evolution Algorithm Based on Partial Ordering Relation for the Layout of Well Drilling

基于偏序关系求解钻井布局问题的演化算法

Well drilling technology is the key for securing quality of water supply wells.

成井工艺是保证供水井质量的关键工艺.

It provides reference for similar well drilling operations.

旨在为类似地层钻井作业提供参考.

In the directional well ( well ) drilling meet those difficulties?

在定向井 ( 水平井 ) 钻井中会遇到那些困难?

Well-Drilling Layout The distribution of well drilling The mathematics model of artesian well overall arrangment

钻井布局的数学模型

The paper discusses an automatic rectifying-deviation technique of drill during oil-well drilling, it is composed of automatic rectifying-deviation system, power generation system and switch power.

本文研究了一种油井钻探过程中钻头自动纠偏技术，其是由井下闭环自动纠偏系统、发电系统和开关电源三部分组成，本文主要围绕这三个部分展开研究和分析。

The drilling fluid system of anti-high temperature organosilicon instability prevention has a good anti-high temperature rheological property and against collapses ability. It can meet well drilling construction requirement of deep well. 5.

研究的抗高温有机硅防塌钻井液体系，具有良好的抗高温流变性和防塌能力，能够满足深井钻井施工要求。