Geomechanics and Fracturing

Normal stress in tangential direction near wellbore (hoop stress)

11.51

Pore pressure increase due to fluid activity (Mody and Hale)

11.52

Pore pressure increase due to given fluid activity contrast (Mody and Hale)

11.53

Pore pressure of shale (Flemings)

11.54

Pore pressure of shale (Traugott)

11.55

Porosity irreversible plastic deformation occurs

11.56

Pressure required to induce a tensile fracture (breakdown pressure)

11.57

Pressure to grow fractures (Abe, Mura, et al.)

11.58

Radial stress around vertical wellbore

11.59

Ratio of pore pressure change to original due to depletion

11.60

Rotation of maximum principal stress near wellbore

11.61

Rotation of maximum principal stress near wellbore (Zoback \ Day-Lewis)

11.62

Shale compaction

11.63

Shear modulus

11.64

Shear modulus from Young’s modulus

11.65

Shear stress near vertical well

11.66

Slowness of the formation

11.67

Storativity of fractures

11.68

Stress at edge of wellbore breakout

11.69

Stress component near normal faulting in reservoir

11.70

Stress components in original coordinate system in depletion drive

11.71

Stress intensity at tip of mode I fracture

11.72

Stress path (induced normal faulting)

11.73

Stress path of reservoir with changes in production

11.74

Stress perturbation (Segall and Fitzgerald)

11.75

Subsidence due to uniform pore pressure reduction in free surfaces

11.76

Unconfined compressive strength of rock

11.77

Velocity of bulk compressional waves

11.78

Velocity of compression waves

11.79

Velocity of shear waves

11.80

Yield strength (Bingham plastic model)

11.83