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What is the reduction in bottom hole pressure if a 5 bbl lightweight pill of 7.5 ppg is spotted around 4 drill collars (total
What is the reduction in bottom hole pressure if a 5 bbl lightweight pill of 7.5 ppg is spotted around 4 " drill collars (total length 460 ft) in a 6 1/8" hole containing OBM of 11.9 ppg
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