A method of characterizing a subterranean formation using a plurality of seismic acquisitions, comprising: a) obtaining a first seismic acquisition of the subterranean formation, wherein the first seismic acquisition is a baseline survey; b) injecting a compressible gas fluid into the subterranean formation, wherein the gas fluid at least partially fills a portion of a fracture network of the subterranean formation; c) obtaining a second seismic acquisition of the subterranean formation; and d) calculating a time-lapse difference in the plurality of seismic acquisitions; wherein the method comprises: obtaining a plurality of time-dependent seismic acquisitions of the subterranean formation; and determining an injected gas fluid contact area or contact volume based on the time-lapse difference, wherein the contact area or contact volume is obtained by calculating a difference between the baseline seismic survey and a seismic survey acquired after injection of a gas fluid to obtain an image of fracture zones within seismic resolution; the method being characterized by: (i) obtaining a baseline 3D seismic survey in step a); (ii) after step a), performing an initial completion in the subterranean formation and obtaining the second 3D seismic acquisition of step c); (iii) after step c), injecting a second gas fluid into the well and obtaining a third 3D seismic acquisition of the subterranean formation, wherein the fracture network undergoes a period of pressure depletion before the injecting the second fluid; and (iv) during a well-intervention for production optimization, injecting a third gas fluid into the well and obtaining a fourth 3D seismic acquisition; wherein the plurality of time-dependent seismic acquisitions comprises the baseline, second, third, and fourth 3D seismic acquisitions. a) obtaining a first seismic acquisition of the subterranean formation, wherein the first seismic acquisition is a baseline survey; b) injecting a compressible gas fluid into the subterranean formation, wherein the gas fluid at least partially fills a portion of a fracture network of the subterranean formation; c) obtaining a second seismic acquisition of the subterranean formation; and d) calculating a time-lapse difference in the plurality of seismic acquisitions; obtaining a plurality of time-dependent seismic acquisitions of the subterranean formation; and determining an injected gas fluid contact area or contact volume based on the time-lapse difference, wherein the contact area or contact volume is obtained by calculating a difference between the baseline seismic survey and a seismic survey acquired after injection of a gas fluid to obtain an image of fracture zones within seismic resolution; the method being characterized by: (i) obtaining a baseline 3D seismic survey in step a); (ii) after step a), performing an initial completion in the subterranean formation and obtaining the second 3D seismic acquisition of step c); (iii) after step c), injecting a second gas fluid into the well and obtaining a third 3D seismic acquisition of the subterranean formation, wherein the fracture network undergoes a period of pressure depletion before the injecting the second fluid; and (iv) during a well-intervention for production optimization, injecting a third gas fluid into the well and obtaining a fourth 3D seismic acquisition; (i) obtaining a baseline 3D seismic survey in step a); (ii) after step a), performing an initial completion in the subterranean formation and obtaining the second 3D seismic acquisition of step c); (iii) after step c), injecting a second gas fluid into the well and obtaining a third 3D seismic acquisition of the subterranean formation, wherein the fracture network undergoes a period of pressure depletion before the injecting the second fluid; and (iv) during a well-intervention for production optimization, injecting a third gas fluid into the well and obtaining a fourth 3D seismic acquisition; wherein the plurality of time-dependent seismic acquisitions comprises the baseline, second, third, and fourth 3D seismic acquisitions.