Drilling with air in sandstone

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Drilling 10" hole PDC bit with air in sandstone formation, hit water around 300 feet, no diverter ( as seen laying next to rig ) gave the ol Gardner Denver a bath. Top head drive ( has splash guard on bottom of top head) northern Arizona est. 300 GPMs
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Please share a video how to drill 90mtr 14" inch drill at sand collapsable strata with DTH Drill for Gravell Packed Tubewell

paragagrawal
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