Comparison of propped hydraulic fractures around producer and WIFs around water injector (modified from Rizwan ).
|Propped fractures in producer||Fractures in water injector|
|Type of fracture||Static (non-shrinking)||Non-static (shrinking)|
|Type of PTA used||Pressure build-up||Injection fall-off|
|Fracture induced intentional or accidental?||Intentional||Accidental|
|Fracture closure occurs?||No||Yes|
|Fracture storage occurs?||No||Yes|
|Closure induced flow affects PTA?||Not observed||Strongly observed|