Seismic responds to relatively large-scale geological features.
From conventional seismic interpretation of faults to more advanced seismic inversion, the results can be used to distribute fracture intensity in reservoir models.
Image logs using multiple microresistivity pads and array sonic are frequently used to measure fractures.
However there is an important level of geological interpretation required to identify the key features that may have a bearing on flow in the reservoir
Flowmeter logs can identify which intervals are producing.
Cores can be valuable for direct description of fractures on a mm to m scale.
The nature and orientation of fracture types can be measured.
However, it is not always clear which fractures are open in the subsurface and large fractures might not be recovered by the core.