1.
Application of Fractal Theory to Anti-Drilling Properties of Volcanic Rock Formation
分形理论在火山岩地层抗钻特性评价中的应用
2.
Study on Dynamic Characteristics and Failure Mechanism of Drill String in Air Drilling
气体钻井钻柱动力学特性及钻柱失效机理研究
3.
ANALYSING DYNAMIC CHARACTERISTICS OF DRILLING STRING EDDY OF INSIDE CONTAINING DRILL FLUID
内含钻井液的钻柱涡动动力特性分析
4.
BHA directional behavior
底部钻具组合定向特性
5.
Characteristics: This product, designed to locate the hole of the board in hole drilling, features good crimple resistance, heat resistance, burning resistance and deformation resistance.
本产品用于钻孔时对板的孔用，有一定的抗皱，抗热性，不易变形，不易烧焦等特点。
6.
The diamond shaped canopy provides85% frontal coverage; the crosswind compensation effect can also be clearly felt during fast forward flight.
钻石状菱形机身包覆性达到85%上，高速航道飞行时，针对侧面抗风之特性尤其明显。
7.
The Spindle System and Drills Dynamic Characters Study for High-speed Micro-drills;
高速微孔钻床主轴系统及钻头的动态特性研究
8.
Development of Abrasive Water Jet Drilling-cutting Aiguille and Experiment Study on Cutting Performance of Abrasive
磨料射流钻割一体钻头研制及切割特性研究
9.
STUDIES ON THE BIONOMICS OF ACHANARA AERATA BUTLER AND ITS CONTROL
芦苇钻心虫生物学特性及其防治研究
10.
Research on the Drilling-shut Design of the Especially Low Permeability Oil-field;
特低渗透性油田调整井钻关措施研究
11.
PDC Variable Diameter Drilling Bit Mechanical Characteristics and Structural Design;
PDC变径钻头力学特性及结构设计
12.
Properties Research on the Hydraulic Tools of the New Type of Water-saving Drilling Technology;
新型节水钻探技术水力机械特性研究
13.
Experimental research on drilling and cutting characteristics of PDC bit at home and abroad
国内外PDC钻凿特性检测试验研究
14.
Simulation the Acoustic Characteristic of Periodic Drill String of Logging while Drilling
随钻测井周期性钻柱结构声传播特性的数值仿真
15.
Researches on the Mechanism and Properties of High Temperature Resistant Water-Based Drilling Fluids with High Density
抗高温高密度水基钻井液作用机理及性能研究
16.
Chemical Constituents and Anti-inflammation Effect of the Essential Oil in Schizophragma integrifolium
钻地风挥发油化学成分及抗炎活性的研究
17.
Rheological Properties of High-Temperature Water Based Drilling Fluids at High Temperature and High Pressure
抗高温水基钻井液超高温高压流变性研究
18.
The Influence of Surfactants on Polymer Sulfonate Drilling Fluids
用表面活性剂提高聚磺钻井液的抗高温和抗污染能力