As a result of extensive theoretical, experimental and field studies over the last 20 years, several widely recognized seismic characteristics of rock fracturing have been established: increased anisotropy of seismic velocity and reflectivity, decreased velocity, increased intrinsic attenuation and scattering, and anomalous frequency dependence of reflection records. More often than not, these fracture-related characteristics are weak and can be ambiguous to identify, thus causing essential difficulties in the detection of fractures and estimation of fracture parameters. We propose an integrated geophysical and geomechanical approach which aims to minimize these difficulties in order to further improve analytical and numerical modelling techniques and to better identify fracture-related anomalies in seismic data. The study presented in this paper is the first attempt to exemplify some commonly used techniques implemented at an oil/gas field in East Siberia where the hydrocarbon productivity of a carbonate reservoir is controlled by extensive fracturing.
|Number of pages||18|
|Journal||Journal of Seismic Exploration|
|Publication status||Published - Dec 2007|
- Geomechanical modelling
- Integrated interpretation
- Natural fracturing
- Seismic velocity