bha

Moving-coordinate reiterative method is used for non-linear finite analysis of BHA .

把动坐标迭代法应用于下部钻具组合（BHA）的非线性有限元分析。

Mechanics analysis of the single stabilizer BHA and its field application

单稳定器钻具组合特性分析及应用

Finite Element Analysis of BHA under Large Deformation for Horizontal Wells

水平井钻具组合大变形有限元分析

Mechanical Analysis and Design of Coring BHA in Long Horizontal Segment

水平段大段取心钻具力学分析与设计

A BHA Communication Scheme and Its Performance Analysis JUMP SHOT

一种基于跳波束天线的通信方式及其性能分析

Method for Predicting the Rate or Deviation Change of BHA

钻具组合造斜率预测方法

Effect of BHA - Plant Growth Hormone on Enzyme Activity

BHA-植物生长素对酶催化活性的影响

Study on the bit boundary effect of BHA mechanics

底部钻具组合力学行为的钻头边界效应研究

Finite element analysis of BHA in a curved directional well

弯曲井眼中下部钻具组合的有限元分析

The results showed that BHA could increase the plant height and biomass obviously .

结果表明，提前施入BHA能明显提高番茄的株高、生物量；

Finite element simulation of lateral force on BHA of rotary steering drilling system

旋转导向钻井工具BHA侧向力的有限元仿真

Calculation Analysis of the Steering Force of Three Typical BHA Used in JiangSu Oilfield

江苏油田三种典型钻具组合复合钻井导向力计算分析

New concept for determining the top tangential point on BHA

确定底部钻具组合上切点位置的新观点

Stabilizer is an important component in BHA of hole deviation control .

稳定器是井斜控制井底钻具组合中的重要组件。

Study on the eccentric deflection controlling BHA and its application in Jiangsu

偏轴防斜钻具的研究及在江苏部分地区的应用

Study on the dynamic mechanism of the failure of BHA with stabilizers in deep well

深井中带扶正器下部钻柱组合失效的动力学机理研究

Research on the deformation and stress of BHA

下部钻柱组合的变形及应力研究

3D Static Analysis Method of General Bottom Hole Assembly ( BHA ) Under Small Deflection

通用下部钻具三维小挠度静力分析方法

The design and application of anti deflection BHA for vertical slim hole

小眼井直井防斜钻具结构设计及应用

Practical study on single bent sliding steer - able BHA

单弯动力钻具滑动导向组合的实践研究

Studies on stress distribution laws of BHA

下部钻具组合的应力分布规律研究

Determination of BHA 、 BHT in Chicken Oil by Gas Chromatography

气相色谱法检测鸡油中的BHA、BHT

Analysis of BHA mechanical behavior of window cutting of herringbone multilateral wells

鱼骨型分支井开窗下部钻具力学性能分析

Accurate prediction of BHA deflecting capacity is very important for precise well trajectory control .

预测下部钻具组合（BHA）的造斜能力对准确控制井眼轨迹十分重要。

Accuracy of the boundary conditions at the upper tangent of the conventional BHA

传统底部钻具组合上切点边界条件的正确性

The failure of BHA with stabilizers is important among drilling string failures .

带扶正器下部钻柱组合的失效是钻柱失效的一种很重要的类型。

Analysis of the Theory and Influence factors for the BHA to Control Inclination and Azimuth in Horizontal Well

水平井BHA控制井斜与方位机理及影响因素分析

The results show that the extracts have stronger antioxidative activity than BHA in the system .

结果表明，该提取物的活性略强于人工合成抗氧化剂BHA。

Energy levels and spectroscopic characteristics of BHA : C ~ ( 3 + ) Crystals

BeO·3Al2O3：Cr~（+3）（BHA）晶体的能级和光谱特性

Application of finite element moving-coordinate reiterative method to analysis of large deformation of BHA

下部钻具组合的大变形分析&有限元动坐标迭代法的应用