... of infill wells. Reservoir Characterization Upstream Oil & Gas isotropic point fracture propagation injection horizontal stress contrast Modeling & Simulation depletion reorientation angle stress field stress contrast hydraulic fracturing Reorientation contour parent well...

... for vertical wells with a single fracture and horizontal wells with multiple fractures. These findings highlight the importance of considering fluid type and composition while designing refracturing jobs based on the modified stress field due to prior production. Upstream Oil & Gas isotropic point...

... points which are located on the major principal strain axis as black dots at which the principal strain difference is zero. Again from theoretical considerations the lo- cation of the isotropic points is described by Eq. (12) on the Equation page. This formula is shown in Fig. 9, where for the upper part...

... of the fringe geom- etry. The best means of identifying which axis is which, however, is by the isotropic points which are often present in the pattern and lie along the axis of major stress (figure 2(bc), and (d STRESS RATIO As indicated above, an isotropic point lies on the major principal stress axis where 0...