Preboring

用法例句

The successful practice of liquid jet hammer in the pilot hole of well CCSD-1 proves that: under the strain of liquid jet hammer, the distance between bit s bottom and rock face changes regularly, the mechanical state of diamond granules and rock fracture state ameliorate,the cutin depth of bit .

经射流式液动锤在科学钻探主孔先导孔中的应用实践,证明了由于液动锤冲击动载作用钻头底唇面与岩面微量间隙有规律地变化,改善钻头金刚石颗粒受力状况、碎岩状态,提高钻头金刚石颗粒切入深度,改善胎体磨损状况、钻头冷却,成倍地提高了榴辉岩、片麻岩等坚硬地层中钻进回次进尺、机械钻速及钻头平均寿命。

Problems existing in rock coal core fetch and appraisal in drilling and some suggestions;

钻探岩煤芯采取及鉴定中存在的问题及解决的几点建议

Some knowing about geotechnical engineering exploration drilling and logging;

对岩土工程勘察钻探及编录的认识

Low Temperature Mud Basis Liquid of Gas Hydrate Drilling in Plateau Permafrost;

高原冻土天然气水合物钻探低温泥浆基础液研究

The paper discusses the necessity of studying appropriate economic scale of drill workload for geological survey projects, from the aspects of reasonable allocation of resources, effective arrangement of economic activities, and the characteristics of geological survey.

文章从合理配置资源、有效安排经济活动、国土资源大调查地质调查工作的特点等方面 ,论述了地质调查项目钻探经济规模工作量研究的必要性。

The artificial neural network (ANN) method is used to solve the puzzle that occur in the drilling: the identification of the lithology of the strata drilled.

对用人工神经网络方法来解决钻探生产的实际问题 ,在不取心的情况下识别所钻地层的岩性进行了研究 。

In the first phase of the water disaster control project,to seal the water inrush gateway and to drain water from the mine were the main operations and meanwhile,the surface drilling exploration,3D seismic,transient electric:method and other comprehensive means were applied to determine the inrush water channel as the hidden sink hole with good water conductivity.

东庞煤矿在2903工作面下巷掘进时突水被淹,水害治理一期工程中以封堵突水巷道、排水复矿为主,同时采用了地面钻探、三维地震、瞬变电法等综合手段,为确定突水通道为导水良好的隐伏陷落柱,不同探测手段确定的陷落柱截面积相差10倍以上;在二期陷落柱封堵工程中,在一期探查资料的基础上,以钻探资料为约束,以三维地震精细解释为重点,对陷落柱的边界重新进行了解释定位,确定了陷落柱空间形态,经过大量钻探工程验证,地质探查效果良好。

offshore drilling

海底钻探;海上钻井;海上钻探;海洋钻井;海洋钻探;近海钻探;滨外钻探

Diamond drilling replaced percussion drilling.

金钻探取代了冲击钻探。

International Deep Sea Drilling Project/Ocean Drilling Programme

国际深海钻探计划/大洋钻探计划

Specification for operating of drilling, pitting and trenching

钻探、井、槽探操作规程

Discussion on the Design of Drilling String Thread for Complex Drilling Conditions

适应复杂钻探条件的钻探螺纹设计探讨

offshore drilling platform

海上钻井平台近海钻探平台

Diamond core drilling equipment conventional system

GB/T16950-1997金刚石岩心钻探钻具设备

Diamond core drilling equipment--Wire line system

GB/T16951-1997金刚石绳索取心钻探钻具设备

Improvement and Development of Core Drilling Method in Scientific Drilling

科学钻探取心钻进方法的改进和发展

Design and Application of large Diameter Bit in Rock and Soil Drilling

岩土钻探工程大口径钻头设计与应用

The Multi-functions of Micro-bubble Drilling Fluid for Core Drilling

微泡钻井液在岩芯钻探中的多重功效

development drilling: Drilling in a known producing field as opposed to exploratory drilling.

开发性钻探: 在已知的生产性油田进行的钻探。区别于勘测性的钻探。

offshore mobile drilling rig

移动式海上钻探设备

in mountains and under the sea to look for oil.

山脉和海洋里钻探石油。

drilling for oil in the desert

在沙漠中钻探石油.

Specification for drilling in hydraulic and hydroelectric engineering

水利水电工程钻探规程

engineering boring and drilling devices

工程钻探和掘进机械

Marine Mobile Driling Unit Insurance

海上移动性钻探设备险