查询词典 drilling stem

Pneumatic hammer drilling technology with low wob,low rate of revolution and high capacity to break rock is one of the best effective methods to solve the problems of hard rock drilling.

井斜是气体钻井中遇到的比较突出问题，井斜大或井斜增长过快常采用低钻压吊打的方式来解决，这样就牺牲了机械钻速，延长了钻井周期，增加了钻井成本。

As for the air percussive rotary drilling, because of its advantages of high ROP, long bit life, light WOB, reduced wear of drill collar, large cuttings, low drilling cost, low formation damage and no lost circulation, it has gained acceptance.

空气冲击回转钻井在一些特定的地层和井眼条件下具有高机械钻速、长钻头寿命、小钻压、较轻钻具磨损、大岩屑、低钻井成本、较轻油层污染和避免井漏等优点，因此很早就被钻井界接受。

In situ hydrate is unstable and dissociates easily during drilling or coring which may result in a series of drilling accidents.

由于原位天然气水合物极度不稳定，在钻探和取心过程中易发生分解，进而导致一系列意想不到的钻井事故。

By means of analysis on the construction alternatives using twin drilling jumbos,the paper summarizes the rapid excavation technology for the double-lane tube of twin tube highway tunnels by means of twin drilling jumbos and other supporting machinery and equipment,which proivdes a new concept for the rapid excavation of long and huge tunnels in the future.

介绍了瑞典353E凿岩台车在重庆石忠高速公路方斗山隧道中的应用情况，并通过对双台车施工方案的的分析，总结了在高速公路双车道隧道中单洞利用双台车及配套设备实现快速掘进的施工技术，为长大隧道提供了一种快速施工的思路。

Meanwhile, she is equipped with the most advanced production and inspection machines: one Mitsubishi 4-axis drilling-milling machine center, five 3-axis drilling-milling machine centers, 50 CNC lathers, 14 general lathers, Three-Dimensional Inspection Machine, Angle Inspection Machine, Salt Spray Machine, Surface Roughness Inspection Machine etc.

与此同时，公司装备了现代化的生产和检验设备：一台大型三菱4轴镗铣加工中心，五台三轴镗铣加工中心，50台CNC数控机床，14台普通机床，三坐标检测仪，角度测量仪，盐雾实验机，粗糙度测量仪等等。

Polymer drilling fluid is one of the most commonly used drilling fluid systems in the oilfields.

不分散低固相聚合物钻井液(以下简称聚合物钻井液)是国外 2 0世纪 6 0年代发展起来的一种钻井液体系。

It not only needs the drilling crew to carry out basic yielding task but also other logistics and assistance departments such as the well site sureying drilling design scene perambulating moving and riging up matarial providing cementing well logging and equipent maintenance.

摘要石油钻井工程是进行石油天然气资源勘探开发的主要工程，被誉为&石油工业的火车头&。

3 Rebuilding project as an example and combined with the general situation of project,it elaborates the constructing measures of soft and large OD perfusing drilling pile,assesses its constructing quality,so as to ensure the effect quality of perfusing drilling pile.

以黄河三号桥改建工程为例，结合工程概况，对软基大直径钻孔灌注桩的施工措施进行了阐述，并对其施工质量进行了评定，以确保钻孔灌注桩的成孔质量。

On the basis of the produced oil little while drilling using the oil based mud and the difficult to injected water, this paper evaluates compatibility among the filtrate of drilling fluid,completion fluid, slurry,injected water and formation water and studies the effect of injectability on cores which are pullulated by the filtrate and oil.

针对现场油基钻井液所钻井出油少、注水困难等问题，评价了油基钻井液滤液、完井液、水泥浆、注入水、地层水间的配伍性，以及油基钻井液滤液、原油对岩心动静污染后吸水能力的影响。

Self-elevating drilling platforms play an important role in the reconnoitering and the exploitation of offshore oil fields. But with the advancement of offshore oil industry, the earlier self-elevating drilling platform cant function well to satisfy the demands of the development of offshore oil reconnoitering and exploitation. They should be upgraded to be able to function as well as possible.

自升式钻井平台在海洋石油勘探开发中发挥着积极的作用，但随着海洋石油工业的发展及海洋勘探技术的不断提高，早期设计建造的自升式钻井平台在许多方面不能适应形势发展的需要，需要进行升级改造，以提高施工能力。

Eight cases of simple chordee of penis were adopted urethral extending.9 cases of severe simple chordee of penis were adopted primary urethroplasty.

8例单纯性阴茎下弯患者采取尿道延伸术，9例重度阴茎下弯患者采取切断尿道矫直阴茎一期尿道成形术。

She is a daintily dressed young lady.

她是个装饰娇艳的少女。