Surface borehole well is a simply and high performance method to drawing coal bed and goaf gas which controlling and making good use of the coal mine gas.
地面钻井抽采采动影响煤层及采空区瓦斯是进行煤矿瓦斯治理和抽采利用的有效方法。
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。
Lowering radioactive material into a borehole and measuring how well the radiation passes through the surrounding rock provides more information about what's down there.
将放射性物质放入钻孔中然后测量放射线穿过周围岩石的特性，可以提供地下物质的更详细信息。
During drilling horizontal well, usually adopt geometry steerable drilling technology to increase the penetration rate of borehole track in oil reservoir.
在水平井钻井中，通常采用地质导向钻井技术来提高井眼轨迹在油层中的穿透率。
This paper considers that formation, borehole and well head constitute a connective system restricting and influencing each other.
本文将地层、井筒、井口考虑成一个相互制约，相互影响的连通体系。
In the oil field, borehole recordings allow direct correlation to GPTS and well-to-well correlations.
在油田上，钻井记录允许直接与GPTS对比，以及进行井与井之间的对比。
A mathematic model for the relationship between the rate of heat transfer per meter borehole and the depth of borehole as well as the flow rate was built.
建立了钻井单位井深换热量与钻井深度、流量变化关系的计算模型。
By directly measuring the acoustic velocity of each formation encountered in a well, the well logs and borehole seismic data can be correlated to surface seismic data more easily.
通过直接测量井中每一地层的声速度，测井记录和井中地震数据可以更容易地和地表地震数据联系起来。
The statistics and analysis of it indicate that the failures of MDT are related to petrophysical property and lithology of the reservoir, irregular borehole, as well as mud performance.
对其应用情况的统计分析揭示，测量失败与地层物性、岩性、井孔质量以及泥浆性能等因素有关。
The technology of monitoring well bottom while drilling has high precision, which can control borehole pressure more precise, but also the scope of the pressure gradient is well established.
井下随钻流量监测技术具有很高的监测精度，能够对井眼压力进行更加精细的控制，还能够对压力梯度范围很好的确定。
Downhole video logging technique captures borehole images by downhole camera and can be applied to well casing inspection, downhole fishing, downhole completion quality inspection, etc.
井下视频成像测井利用井下摄像头获取井眼实时图像信息，可用于套管检测、落物打捞、井下作业质量检查等。
In smooth boreholes of constant diameter, the effect of the borehole is well understood and can be corrected for.
在井径不变、井壁光滑的井中测井，井眼影响容易校正。
Drilled formations are complex with unstable wall. Lost circulation, well kick, borehole collapse, diameter shrinkage, sticking and other complex situations often occur.
钻遇地层复杂，井壁稳定性差，井漏、井涌、井塌、缩径、卡钻等井下复杂情况频发；
Developed study on the numerical bit, well bottom and the borehole face modeling method for PDC bit numerical experiment system.
开展了PD C钻头数值实验系统中数值钻头、数值井底以及数值井壁的建模方法研究。
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。
The rotary percussion drilling technology have the advantage to raise the hard rock well drilling speed effectively, prevent the borehole deviation in the hard rock or the complicated geologic strata.
旋转冲击钻井技术依靠冲击器产生冲击载荷并作用在钻头上来破碎岩石。该技术能够有效提高硬地层钻井速度，能够防止硬地层及复杂地层钻井中的井斜问题。
It is necessary to depend on the control technology of borehole trajectory to drill the extended-reach well successfully. A closed-loop adjustable stabilizer at downhole is developed.
钻成大位移井必须依靠井眼轨迹控制技术，研制的井下闭环可变径稳定器是实现该项技术的关键。
To meet the requirements of well cementing fors mall borehole and small annular space, the composite plastic fluid loss additive PT-2 was studied.
为适合小井眼、小间隙井的固井要求，研究了复合塑性降滤失剂PT—2体系。
Horizontal well production forecasting formulas need to consider not only anisotropism and borehole eccentricity, but also the skin factor during drilling and completion process.
水平井产能预测公式除了要考虑储层各向异性和井眼偏心距的影响因素外，还要考虑钻井和完井过程中产生的表皮系数的影响。
The services will include geological and geomechanical analysis as well as borehole data processing and quality control.
该服务包括地质和地应力分析、井眼数据处理和质量控制。
The borehole trajectory design to be drilled well with defined direction needs to solve a set of 7-element nonlinear equations.
限定了目标点井眼方向的三维圆弧型井眼轨道设计模型是一个非线性代数方程组，通常需要使用数值迭代方法进行求解。
The large-diameter gas drainage well laid out in the Xuandong No. 2 Mine used small-diameter pilot drilling, then gradually reaming the borehole and finally completed to designed size.
宣东二号矿布设施工的大口径瓦斯抽放井以小口径导向钻进，后逐级扩孔成井。
The negative pressure for under balanced perforating is a key parameter in well perforating design. It can directly influence the productivity and borehole stability of a perforated well.
负压射孔技术的关键参数之一就是负压差的大小，它直接影响油井射孔完成后的产能以及孔眼的稳定性。
The synthetic seismogram made by those methods fit greatly borehole side trace, and may use reliably in horizon identification of cross-well data by the practical application.
实际应用表明，采用深度域方法制作的合成记录与井旁地震道吻合程度较高，可以用于井间地震资料的层位标定。
The synthetic seismogram made by those methods fit greatly borehole side trace, and may use reliably in horizon identification of cross-well data by the practical application.
实际应用表明，采用深度域方法制作的合成记录与井旁地震道吻合程度较高，可以用于井间地震资料的层位标定。
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