The sand bailer is also used as a bottom hole sampler.
捞砂筒也可用作业井底取样器。
The device can move the seal part from the bottom hole to the wellhead.
该工具将密封部位由井底移至井口，适用于各种规格的大直径套管固井。
The stress level is the key factor that affects the fatigue life of bottom hole assembly.
钻具组合在井下所承受的应力水平是影响其疲劳寿命的一个关键因素。
When the flowing bottom hole pressure decreases to a critical value, the matrix will begin to yield .
随着井底流压降至某一临界值， 岩石骨架开始出现屈服。
The basic assumptions, equations and boundary conditions for bottom hole assembly (BHA) analysis were discussed.
讨论了下部钻具组合分析的基本假设、基本方程和相应的边界条件。
The monitor can automatically measure the annular liquid level changes at well head, and then calculate the bottom hole pressure.
该仪器能够从井口自动监测抽油井内环空液面深度变化，通过分析计算获得井下压力的恢复情况。
The reservoir information from flow response on condition of stable bottom hole pressure helps to determine reservoir information.
定井底流压下流量响应所反应出的油藏信息，有助于确定油藏参数。
The bottom hole pattern of a well is the aggregation of the pits on the bottom rock cut by the bit teeth in the course of drilling.
井底模式就是钻头在钻凿岩石的过程中，钻头牙齿在井底岩石上打出凹坑的集合。
The borehole deviation correction technique with bottom hole assembly and its application in Xinjiang oil Well YX-1 were introduced.
介绍了井底钻具组合纠偏技术及其在新疆YX - 1油井中的应用。
Validity and feasibility of the finite difference time domain method is demonstrated by the echo-wave signal of a flat bottom hole block.
通过与平底孔试块实际缺陷回波信号的对比，验证了脉冲超声波有限差分法模拟计算的有效性和正确性。
In routine overbalanced drilling, the bottom hole pressure towers above the formation pressure so that the mud fluid will leak into the formation.
常规过平衡钻井方式打开油气层时，井底压力高于地层压力，钻井流体会向地层渗滤甚至漏失。
The bottom hole flow physical model of a kind of PDC coring bits is established considering the effect of junk slot and teeth layout in this paper.
以一种现场常用的PDC取心钻头为原型，充分考虑排屑槽和切削齿对于井底流动的影响，建立了与实际相接近的PDC取心钻头井底流场的物理模型。
The bench test of three-cone bits and analysis of their bottom hole patterns are the simplest and useful means of checking and improving their design.
三牙轮钻头地面台架试验与井底模式的分析是对牙轮钻头设计的合理性进行检验与改进的最简便又较真实的方法。
The abandonment formation pressure(AFP) of gas well is usually calculated by stable productivity equation and abandonment flowing bottom hole pressure.
通常人们采用气井某一时刻的稳定产能方程结合废弃井底流压来计算废弃地层压力。
Darcy's law indicates that formation pressure of an oil well has some correlativity with wellbore fluid producing volume and bottom hole flowing pressure.
达西定律表明，油井地层压力与井筒产液量和井底流压具有相关性。
A mechanical model of bottom hole assembly (BHA) with eccentric bits is established and the solution of this model was given by means of numerical method.
采用静力分析的方法，建立了偏心钻头底部钻具组合的力学模型，并完成了对力学模型的求解。
The tangency point of Bottom Hole Assembly is located at where the drill string just touches the wall of the borehole, and the contact force is zero here.
在计算底部钻具组合的受力和变形时，以前一般都是按弯矩为零的条件来确定其上切点的位置。
The rule of reservoir pressure distribution and bottom hole flowing pressure alteration of a periodic trial-produce well in infinity subterranean formation.
无限大地层中—口间歇试采生产井的地层压力分布及井底流压变化规律；
With the selection of a gas liquid computational model to calculate bottom hole pressure and compare with observed pressure, its relative error is less than 2%.
选用气液两相计算模型计算井底压力并和实测井底压力进行了对比分析，相对误差均小于2 %；
The force and deformation of bottom hole assembly (BHA)are calculated by the gap-element method, in consideration for the bending effect and contact state of BHA.
考虑下部钻具组合的弯曲效应和接触状态，运用间隙无法对下部钻具组合进行了受力变形计算。
The practice proved that the technology can reduce flowing bottom hole pressure, minish interlayer interference under reasonable injecting-producing pressure system.
实践证明，在合理的注采压力系统下，潜油电泵可以应用于低渗透油田。
The quantitative relationship between the motion and force of cone bits has not been established up to now owing to the complexity of the work of the bits in bottom hole.
由于牙轮钻头在井底工作的复杂性，目前还没有从理论上建立牙轮钻头的定量运动与受力关系。
The formation of the bottom hole rock-disintegrating track of the mono-cone bit with wedge teeth was studied, and simulation software for the track pattern was developed.
在此基础上以楔形齿为对象研究了偏心单牙轮钻头井底破岩轨迹的形成，并编制了井底轨迹图仿真软件以模拟牙齿的凿岩轨迹。
The paper presents the application, bottom hole assembly and parameter optimum of steering drilling system in Gangshen well 24-26. Meanwhile, the applied effect is analysed.
文中详细介绍导向钻井系统在港深24 -26井的应用情况、钻具组合、参数优选，并进行效果分析。
In the course of transmission, mud pulse signal mainly disturbed by drilling pump, engine in the bottom hole, air bladder contained in mud and movement of drilling equipment.
泥浆脉冲信号在传输过程中主要受钻探泵、井底动力机、泥浆中的气泡及活动钻具的干扰；
For gas Drilling, the bottom hole pressure is far smaller than the formation pressure, so that the gas in the reservoir come out to the hole continuously and get out of the well.
当用气体钻井打开储层时，由于钻进时井筒流动压力远远低于地层孔隙压力，储层流体就不断地流入井筒，并返出到地面。
The anchoring or set to the artificial bottom hole of the separate injection pipe string has solved the creep of the pipe string resulted from the unstable water injection pressure.
分注管柱实施锚定或支撑到人工井底，克服了管柱因注水压力不平稳等原因造成的管柱蠕动现象；
The paper presented 3 kinds of bottom hole assembly, analysed the advantages of downhole steering technique, discussed the problems such as rock carrying and recommended some solutions.
给出了3种钻具组合形式，分析了井下导向技术的优势，探讨了携岩等技术问题并推荐了解决办法。
Under the conditions of constant pressure boundary, when the time approaches to infinity, the curve between the flow rate and the bottom hole pressure is so called conventional IPR curve.
对于定压边界，当时间趋向于无穷大时，气井产量与井底压力关系曲线即是我们常用的IPR曲线（不妨称为常规IPR曲线或稳定IPR曲线）。
It still is a difficult subject for most drilling engineers to predict and control well path by applying the mechanical analysis of bottom hole assembly and the rock-bit interaction model.
利用下部钻具力学分析和钻头与地层相互作用模型来预测和控制井眼轨道对于大多数钻井作业来说仍是一个难题。
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