| 摘要 |
The invention is an improved shaker screen filter (2) for a well fluid shale shaker. The shaker screen filter comprises a main frame arranged for being placed in the well fluid shale shaker for screening, preferably under vibration, of drilling mud. The mainframe is subdivided into a plurality of smaller cell frames. The shaker screen filter comprises one or more cell plug filters (8a,8b,8c) with one or more layers of screen cloths on top of at least one support cloth or support layer. Each cell plug filter comprises a cell plug filter frame arranged to be held in each of the cell corresponding frames of the main frame. One or more first cell frame filters having a first cut-point or particle size distribution (PSD1) and distinguishes from a second cut-point or particle size distribution (PSD2, PSD3, PSD4, ...) in said screen cloth of one or more second cell frame filters. |
