| 摘要 |
A system for filtering and sampling, preferably but not exclusively, of oil drilling mud for the purpose of analyzing the gaseous component contained in debris produced by well-drilling and transported by said mud. The system is provided with a filtering surface developed in three dimensions and with various methods for cleaning the filtering surface with which any contact is avoided between the cleaner and the filtering surface. This prevents further and excessive incrustations of debris on the meshes of the filter and avoids an undesirable passage of air in the aspiration pipe when the filter is partially immersed.
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