卵砾石地层是钻探工程中常见的一种典型的不稳定地层。
Gravel strata is a kind of typical instable layer in drilling engineering.
本文介绍一种新的钻探松散地层护壁方法——套管护壁“三板斧”。
This paper introduces a new wall protection method for drilling loose strata casing pipe wall protection.
在砂卵石地层中勘察钻探时，要解决三个关键性的问题：一是钻进进尺问题；
There have three decisive questions need to solve while drilling in sand gravel layer. The first question is drilling footage.
如果将气井钻探到相应地带，即可开采天然气，此外还可以降低相应天然气水合物地层中的压力。
If a well is drilled into such a zone to extract the natural gas, it can also reduce the pressure within the overlying gas hydrate layer.
钻井中，需要对将要钻达的下部地层深度进行预测，特别是在定向井的钻探过程中显得尤为重要。
In the process of drilling, it is important to predict the drilling formation depth, especially directional drilling.
水泥浆护壁堵漏是钻探施工对付复杂地层的有效方法之一。
Using cement slurry to support the hole walls and plug the leaky zones is one of the effective ways in drilling construction to deal with the troublesome zones.
结合该地区的地层特征，采用新型LG植物胶泥浆来解决钻探的“瓶颈”难题。
According to the strata feature, LG plant glue mud was chosen to solve these difficult problems.
介绍了在该类地层中钻探成井时采取的一系列技术工艺措施。
This paper introduces a series of technical methods used in drilling and completing geothermal well in such formation.
通过对上述因素的分析，建立了适用于海上钻探地层压力计算的方法。
The method suitable for formation pressure calculation in offshore drilling was established on the basis of analyzing these factors.
本文首先根据ZJK盆地西部业已钻探的相当数量钻井的资料，查清了该盆地基底和新生界地层系统及岩性特征。
Based on the information from a number of Wells drilled in the western ZJK ba sin, the basin basement, Cenozoic formation system and lithologic features are, in the first place, established.
卵砾石地层钻进是钻探的难题之一，不仅钻进速度低，钻头的使用寿命短，而且钻探成本高。
Drilling in gravel stratum is one of present difficulties in drilling area with low drilling speed, short service life of bit and high drilling cost.
组合钻探工艺是一种为了提高不同地层取样钻探施工综合效率的多用途钻探技术。
Combined drilling technology is a multi purpose drilling method which is developed to increase the comprehensive drilling efficiency in different formations.
准确的地层压力预测不仅能规避钻探风险，还能指示油气的运移方向，为油气勘探提供依据。
Accurately predicting the pressure underground could not only decrease drilling risks, but also indicate the migration path of oil and gas.
贯通式潜孔锤反循环钻进技术是一种先进的钻探方法，适用于复杂地层中的地质勘探以及各类钻孔工程。
The hollow-through DTH hammer drilling techniques with whole hole reverse circulation is adopted, it is proved that this technique can resolve drilling.
该井钻探层位深、地层变化大，钻前异常地层压力预测尤为重要。
This well is characterized by deep drilling horizon and varied formation lithology, so its predrilling prediction of abnormal pressure is the most significant.
卵砾石地层钻进是钻探的难题之一，不仅钻进速度低，钻头的使用寿命短，而且钻探成本高。
When large dismeter water well is constructed in cobble and boulder strata drilling by percussion machine is not proper to be used as limited by condition.
卵砾石地层钻进是钻探的难题之一，不仅钻进速度低，钻头的使用寿命短，而且钻探成本高。
When large dismeter water well is constructed in cobble and boulder strata drilling by percussion machine is not proper to be used as limited by condition.
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