Page 200 - Fundamentals of Gas Shale Reservoirs

180 GEOMECHANICS OF GAS SHALES

Scale : 1 : 4000 Well_A
DB : Arrow Smith (1) DEPTH (2244.94M–3319.97M) 4/13/2015 00:39
Gamma Elastic parameters Strength In-situ Stresses Mogi-Coulomb Caliper
Ray
GR (API) ES (GPa) UCS (MPa) SV (MPa) MW (gr/cm 3 ) CAL (inch)
0. 250. 0. 50. 0. 200. 0. 150. 0. 3. 6. 16.
DEPTH PR () SHMAX (MPa) Kick BS (IN)
(M) 0.45 0.5 0. 150. 6. 16.
SHMIN (MPa)
0. 150. Break-out
Loss
Break-down

nd
FIGURE 8.7 An example of the MEM for a gas shale well. 1st track from left: gamma ray. 2 track: Young’s modulus (solid dark curve)
rd
and Poisson’s ratio (dashed light curve). 3 track: UCS. 4 track: vertical stress (solid curve), minimum horizontal stress (SHMIN) (pointed
th
curve), and maximum horizontal stress (SHMAX) (dashed curve). 5 track: mud weight windows including kick and breakouts in the left and
th
mud loss and induced fracture to the right. The used mud weight to drill this section is shown in black. Last track shows the caliper.