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Pressure prediction: analysis of mud weights (view source)
Revision as of 14:17, 30 July 2014
, 14:17, 30 July 2014→Mud weight in overpressured formations
==Mud weight in overpressured formations==
==Mud weight in overpressured formations==
In overpressured formations, normal mud weight will not offset formation pressure. If mud weight is increased, however, it can break down (fracture) the normally pressured formations higher in the hole. High pressure requires higher-than-normal mud weight, but the actual weight used might have been more than necessary (i.e., the formation pressure might not be as high as the mud weight implies).
In overpressured formations, normal mud weight will not offset formation pressure. If mud weight is increased, however, it can break down ([[fracture]]) the normally pressured formations higher in the hole. High pressure requires higher-than-normal mud weight, but the actual weight used might have been more than necessary (i.e., the formation pressure might not be as high as the mud weight implies).
==Mud weight in underpressured formations==
==Mud weight in underpressured formations==