drill string的例句大全

A new lithology identification method based on axial amplitude modulation signal of drill string is proposed.

提出了一种利用钻柱轴向振动调幅信号实现岩性识别的方法.

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Analysis and Calculations of Axial Deformation of Drill String in Borehole Plan

设计井眼中钻柱轴向变形分析与计算

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In the paper, Based on the theory of compound crack and fracture mechanics and surface liner cracks of drill string often occurring in process of production and application, a fatigue life model of drill string under the interaction of torsion and axial vibration is established.

根据复合型裂纹扩展理论和断裂力学方法，以及钻柱在生产和应用中的表面线性裂纹现象，提出了钻柱在扭转、纵向振动下的疲劳寿命计算模型。

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with marginal conditions, frequency distribution law of shaft drill string has been had by straight hole drill string model analysis and software simulation. it emphasizes on certain vibration mode.

通过施加边界条件，对直井段钻柱的振动情况进行模态分析和软件模拟，得到直井钻柱在各个振动形式下的频率分布规律；着重分析其在某一振动频率下的振动模态。

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the riser's inner hollow core (a pipe within a pipe) is reserved for the drill string.

立管内部核心是空心的（管中管），留给钻柱使用。

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Gap element method for frictional resistance analysis of whole drill string in prospecting horizontal well

探井水平井整体钻柱摩阻力分析的间隙元法

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application of guide-rod drill string in exploration hole of dongliang coal field in fuxin

导杆式防斜钻具在阜新东梁煤田勘探孔施工中的应用

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Analysis of Buoyant Force and Calculation of Axial Force of Drill String

钻柱的浮力分析及轴力计算

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Always slip and cut the drilling line with the drill string in the cased hole and the bit is at or near the casing shoe.

滑大绳或者倒大绳时，一定要把钻具下到套管内，使钻头处在或接近套管鞋。

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Mechanism Analysis and Preventive Measures of Drill String Washout Caused by Corrosion

腐蚀引起钻柱刺漏的机理分析及预防措施

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twisting vibration of drill string

钻具的扭转震动

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and increasing weight on bit can prevent irregular swaying and regular whirling from appearance at the bottom drill string.

增加钻压会阻碍底部钻柱无规则摆动和规则涡动的形成。

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a component of a drill string that provides weight on bit for drilling.

钻柱的一个部件，它提供钻进时的钻压。

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This paper presents the and trend of drill string vibration analysis technique abroad and at home.

该文概括了钻具振动分析技术的国内外发展概况及其在我国的应用前景.

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Mechanics model for lengthwise vibration analysis of deep well drill string is established.

本文以整体钻柱为研究对象,建立了深井钻柱纵向振动分析的力学模型.

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In the course of sidetracking of horizontal holes, lateral drill string vibration often occurs.

在水平井的侧钻过程中, 钻柱很容易发生横向振动,引发钻柱失效、井眼扩径等严重事故.

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It is an inside BOP ( blowout preventer) in the drill string.

投入式止回阀是钻柱内防喷器。

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The force analysis of the drill string is carried out to obtain the calculation formulas of its axial stress, bending stress, torsion stress, radial stress, circumferential stress and additional shearing stress.

通过钻柱受力分析，给出钻柱轴向应力、弯曲应力、扭转应力、径向和周向应力，以及附加剪应力的计算公式。

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Drilling continues to the desired depth in the bedrock using a conventional drill string.

在基岩中采用常规钻具钻进以达到所需深度.

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Although the structure of drill string seems simple, it bears rather complicated outside force.

虽然钻杆柱在结构上看似较为简单，但实际上，它承受着相当复杂的外力。

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