In this paper, radial investigation depth of acoustic logging is researched with the well that is surrounded by the cylindrical multi-layer media.

根据这些曲线的变化，简单分析了声波测井的探测深度。

youdao

ALL can provide 4 logs that have different investigation depth. They can be used to inverse invasion radius, invasion zone resistivity and virgin zone resistivity.

利用阵列侧向测井提供的4条探测深度不同的曲线，联合反演侵入半径、侵入带电阻率和原状地层电阻率，具有很好的效果。

youdao

So, the investigation depth of spontaneous potential logging is the depth of mud invasion, and relation between spontaneous potential and mud invasion depth may be built.

因此，可以得出自然电位测井的探测深度就是泥浆侵入深度，并可建立自然电位与泥浆侵入深度之间的关系。

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(SAYING) Frattini said Italy wants an in-depth investigation and also wants to ensure that all three Italians detained are guaranteed all the rights provided for in international conventions.

VOA: standard.2010.04.12

On Tuesday the regulators ruled an in-depth investigation was needed as they believed there was "no obvious market failure" that needed to be addressed.

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Since then, 50 attorneys generals have launched a an in-depth investigation into the way BofA and other lenders like Wells Fargo and JPMorgan Chase handled foreclosures.

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But Mr Thomas said the initial investigation had "identified a number of questions and concerns which I now consider warrant further in-depth audit investigation".

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