Real-Time Pore Pressure Detection: Indicators and Improved Methods

Figure 3

Pore pressure obtained from the corrected -exponent method with depth-dependent compaction trend line in a shale gas well. (a) plots the corrected -exponent in shale and the normal corrected -exponent calculated from (9) with and . (b) shows the overburden gradient, mud weight, kicks, and pore pressure gradient calculated from the corrected -exponent (see (8)).

(a)

(b)