overhsot assembly是什么意思

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Field mobile welding machine for drilling tool hardfacing;

野外可移动式钻具耐磨带堆焊专机

The Experimental device for erosion of drilling tool of gas drilling;

气体钻井钻具冲蚀磨损试验装置

Based on statistics and analysis from plenty of information on situation investigation on drilling tool failure and failure analysis data from oilfields,this paper all-round and systematically instates the status-quo,form and cause of drilling tool failure and prevention measure,which has important guiding significance to the drilling tool safety of com.

钻具的安全是安全高效地进行油气资源开发的基本条件和重要保障。

Drill tools have corroded seriously when they are used in the engineering of oil exploitation by Jiangsu Oil Field.

在钻井过程中,钻具的腐蚀相当严重,并且随着钻井方向向纵深发展,温度、压力、井层地质结构的变化等各种因素使得钻具的腐蚀破坏日趋严重。

By the action of high roatry speed,excentric shaft connection intensifies the fatigue failure of drill tool.

为了达到较好的防斜目的 ,必须增大钻进时钻头的转速 ,在高转速的作用下 ,偏轴接头加剧了钻具先期疲劳失效。

7 kN and the minmum drill tool length of 1.

７ｋＮ、钻具长度大于１。

Design and material selection on drilling tools of raising boring machine for deep mine shaft construction;

深井施工用反井钻机钻具的选材和设计

The structures, characteristics and peculiarity of the rigs, and their auxiliary drilling tools and sampler are introduced in details.

TGQ系列勘察取样钻机包括TGQ-1、5、10三个型号,分析了其结构、特性和特点,以及配套钻具和取样器。

Based on data review, the corrosion and erosion of metal drilling tools in under-balanced drilling are analyzed, including affecting factors, composition and application of corrosion inhibitors.

在对文献调研的基础上 ,综述了国内外在欠平衡钻井中对金属钻具的腐蚀与磨蚀方面所做的工作 ,主要包括各种影响因素的分析、相应防腐剂的组成和应用。

Analysis the main factors that affects the drill's infixing direction.

分析了钻具在钻进过程中跑偏的影响因素,通过受压钻杆力学模型的建立,说明稳定器的安装距离对钻杆的弯曲变形有较大影响,同时,可以通过模型确定稳定器的安装位置,实现钻具定向钻进的控制,并对钻杆连接器及稳定器进行了结构设计。

The structure and utilization of YT-series cord coring drills are introduced, supplying a referrence for the people dealing with drilling construction.

介绍YT型绳索取心钻具的结构和使用方法 ,供钻探施工人员参

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。