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- Bottom Hole Pattern 井底模式
- This is the BHA[bottom hole assembly] log. 这是井下钻具组合的记录本。
- Make up bottom hole assembly (BHA). 组合下部钻具。
- Please pull out of hole and change bottom hole assembly! 请起钻,换下部钻具结构!
- Computer simulation of drillstring axial vibration and online monitoring of bottom hole condition. 钻柱轴向振动仿真与井底状态监测方法探讨。
- The paper studies on influence factors of cut blasting in crack rock mass, gives relative waysand principles of hole pattern base on crack distributed. 对裂隙岩体中掏槽爆破布孔的影响因素进行了研究，并根据裂隙分布的情况提出相应的布孔方法和原则。
- According to this problem,this paper proposes a modified isochronal well test with bottom hole liquid loading. 针对这个问题,提出了一种存在井底积液时的修正等时试井资料解释方法。
- Bottom hole pressure changes complicatedly in suction well of double porosity reservoir. 双重孔隙介质油藏油井抽汲生产将使井底压力变化十分复杂。
- Thread, hole patterns and Reticulate smaller catheter and tracheid. 见放射状条纹。See radial stripes.;螺纹、孔纹和网纹导管及管胞较小。
- A kind of rotary steering stabilizer used in a common rotary bottom hole assembly to control well path was developed. 在普通旋转钻具的基础上,研制了一种旋转的近钻头稳定器,它可以将钻柱稳定在井眼截面的需要位置,以控制井眼轨道。
- To punch identical hole patterns into each punch card of a card deck. 把同样的信息孔穿在一叠卡片中的每一张上。
- 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 modified isochronal well test data with bottom hole liquid loading will have abnormity, causing a fail of processing with the original theory or much error. 摘要存在井底积液的修正等时试井资料会出现异常，使原有理论无法处理相应的测试资料或处理的结果误差较大。
- Die sections will have staggered hole patterns for one-way assembly. 为方便组模模具入子应使用防呆孔方式。
- With the fractal geometry theory, this paper puts forward a new rock drillability testing method by selecting detritus from bottom hole as object. 利用分形几何理论，研究了钻井过程中岩石破碎机理及形成过程，提出了一种以井底返出的岩屑为对象的岩石可钻性测试方法。
- 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 reasonable hole pattern of deephole blasting was utilized to make fully use of the explosive energy, to improve the crushed ratio, to lower the boulder yield, and to obtain better dam rocks. 深孔爆破采用合理的布孔方式,使炸药爆炸能量得以充分发挥,破碎率提高,大块度降低,从而获得较理想的堆石坝石料。
- With the progress of drilling technology, bottom hole assembly (BHA) has been developed rapidly to control well trajectory. 随着钻井技术的进步，以控制井眼轨道为目的的下部钻具组合发展迅速。
- 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。
- A device that punches hole patterns in paper tape to represent characters for storage and / or transfer. 在纸带上穿孔,表示存储或传输的字符的一种机械装置。
