Keep the drill centred in the borehole while it ascends and descends.
当钻头上下钻时，要把钻孔保持在中心。
Shear failure is a basic failure mode of borehole rock.
井眼剪切破坏是井眼岩石基本破坏形式之一。
Borehole compensation is different from borehole correction.
井眼补偿和井眼校正不同。
A borehole image of rock layers indicating an underground point bar.
指示某地下曲流沙坝的一幅岩层钻孔图像。
Furthermore, it results in the occurrence of the borehole instability.
由此导致了井壁失稳的发生。
Digital borehole camera is the new method in optical borehole imaging.
数字钻孔摄像是光学成像测井技术的新手段。
The results may be applied to analyze the stability of borehole or tunnel.
其结果可以应用到分析井孔和巷道的稳定性。
In borehole sonic logging, these may be the shear, flexural and Stoneley waves.
在井眼声波测井中，这些波是横波、弯曲波、斯通·利波。
That part of a wireline logging tool that is pressed firmly against the borehole wall.
电缆测井仪器的一部分，测井过程中紧贴在井壁上。
Riser pipe: a four-foot-diameter steel pipe called a riser connects the ship to the borehole.
立管：直径四英尺的钢管(称为“立管”)将船和钻孔连接起来。
Point bars modeled in a North Texas gas field on the basis of borehole and seismic images.
根据钻孔和地震图像建立的德克萨斯州北部某气田中的曲流沙坝模型。
And returns to the surface in the space between the drill pipe and the wall of the borehole.
然后通过钻杆和钻孔壁之间的间隙返回至地表。
The inside part and outside part are combined with the temperature of borehole wall directly.
内外两部分之间通过钻孔壁温耦合连接。
Synthetic Mud: a viscous cocktail of minerals, polymers and seawater stabilizes the borehole walls.
合成泥浆：矿物质、聚合物和海水组成的黏稠混合物使井壁保持稳定。
The stress drop and acoustic emission change sharply before and after the burst in the borehole.
在临界压力附近，钻孔冲击前后的应力降及声发射急剧增加。
In modern logging several different kinds of measurements are taken simultaneously in a borehole.
现代测井操作在一个钻孔中同时进行多种不同的测量。
The basic failure mode of borehole is borehole avalanche and shear zone caused by bore instability.
井眼基本破坏形式是由于不稳定性造成的井眼岩石崩落坍塌和剪切带。
Well TK431 was a test well drilled in this area trying to solve the problem of borehole instability.
TK 431井是在该地区实施的一口解决该井段井眼失稳问题的试验井。
It showed that eccentric pressure is produced by eccentric decouple charge blasting on borehole wall.
实验结果表明，偏心不耦合装药在孔壁上形成明显的偏心应力场。
It is a non linear inversion to calculate crustal stress field with collapse data of inclined borehole.
用斜井钻孔崩落资料求取地壳应力状态是一个非线性反演问题。
If the stress that ACTS on shale around wellbore exceeds its intensity, borehole instability will happen.
当井壁岩石所受的应力超过其强度时就会发生井壁失稳。
The pad holds sensors that are focused in one direction and must be as close as possible to the borehole wall.
极板上的探测器可以在一个方向聚焦，尽可能地贴靠在井壁上。
The borehole influences this difference if the tool is tilted or if there is a cave opposite one of the receivers.
当仪器倾斜或其中一个接收器正对着一个洞穴时，井眼将影响这种差异。
Making trajectory of borehole as far as possible to achieve ideal condition an preventing the phenomenon of dogleg .
可在钻进过程中起到修整井壁的作用，使井眼轨迹尽量达到理想状态，防止出现狗腿现象。
The temperature field of acid flowing in the borehole and the fracture is the basis for calculating the in-situ parameters.
酸液在井筒和裂缝流动时的温度场和速度场模拟是进行酸液就地性能参数计算的前提。
Lost time due to wellbore instability and tools lost in a borehole leads to higher drilling expenditures and delayed production.
由于井眼的不稳定和落入井眼的工具而造成的损失时间，会导致钻井费用更高以及生产的延迟。
Others have articulated joints attaching them to the logging tool, with a backup arm to press the pad against the borehole wall.
另有一些极板需要使用连接装置才能和下井仪器相连，测井时需要使用推靠臂才能紧贴井壁。
A man helps a moran, or young Samburu warrior, drive cattle toward a small borehole dug into a parched riverbed in Archer's Post.
一名男子正在帮助一位年轻的桑布鲁武士赶牛，年轻人在阿切站附近这块干燥的河床上凿了个洞，以取水为牛群解渴。
The essay expatiates the techniques of borehole in surface blasting, and instructs the construction of borehole in surface blasting.
本文阐述了露天深孔爆破的钻孔施工工艺，对露天爆破钻孔有参考和指导作用。
The essay expatiates the techniques of borehole in surface blasting, and instructs the construction of borehole in surface blasting.
本文阐述了露天深孔爆破的钻孔施工工艺，对露天爆破钻孔有参考和指导作用。
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