where SEpl = surface equipment pressure loss, psi Q = circulation rate, gpm
C = friction factor for type of surface equipment W = mud weight, ppg
Type of Surface Equipment C
Example: Surface equipment type = 3
Mud weight = 11.8 ppg
SEpl = 2.596 x 10.279372
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Co-op Mailing means that two or more businesses share in the cost and distribution of a direct mail campaign. It's kind of like having you and another non-competing business split the cost of printing, assembling and mailing an advertising flyer to a shared same market base.