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  2. How To Screen 2Mm Gravel Sizehow To Screen 2Mm Gravel Measure

How To Screen 2Mm Gravel Sizehow To Screen 2Mm Gravel Measure

Where the grading of the formation material is unlikely to form a natural pack a gravel pack should be placed outside the screen The screen is suspended centrally in the borehole by means of lugs fitted at intervals on the outside and gravel is tremied into the annular space The gravel pack can be of uniform sized gravel or graded gravel

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