Seismic low-frequency-based calculation of reservoir fluid mobility and its applications
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Low frequency content of seismic signals contains information related to the reservoir fluid mobility. Based on the asymptotic analysis theory of frequency-dependent reflectivity from a fluid-saturated poroelastic medium, we derive the computational implementation of reservoir fluid mobility and present the determination of optimal frequency in the implementation. We then calculate the reservoir fluid mobility using the optimal frequency instantaneous spectra at the low-frequency end of the seismic spectrum. The methodology is applied to synthetic seismic data from a permeable gas-bearing reservoir model and real land and marine seismic data. The results demonstrate that the fluid mobility shows excellent quality in imaging the gas reservoirs. It is feasible to detect the location and spatial distribution of gas reservoirs and reduce the non-uniqueness and uncertainty in fluid identification.
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- Seismic low-frequency-based calculation of reservoir fluid mobility and its applications
Volume 9, Issue 3 , pp 326-332
- Cover Date
- Print ISSN
- Online ISSN
- Chinese Geophysical Society
- Additional Links
- fluid mobility
- seismic low-frequency
- reservoir characterization
- fluid identification
- instantaneous spectral decomposition
- Industry Sectors
- Author Affiliations
- 1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, 610059, China
- 2. Key Laboratory of Earth Exploration and Information Technology of Ministry of Education, Chengdu University of Technology, Chengdu, 610059, China
- 3. North China University of Water Resources and Electric Power, Zhengzhou, 450011, China
- 4. College of Earth Sciences, Chengdu University of Technology, Chengdu, 610059, China