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Pre-stack inversion for caved carbonate reservoir prediction: A case study from Tarim Basin, China
- Source :
- Petroleum Science; December 2011, Vol. 8 Issue: 4 p415-421, 7p
- Publication Year :
- 2011
-
Abstract
- The major storage space types in the carbonate reservoir in the Ordovician in the TZ45 area are secondary dissolution caves. For the prediction of caved carbonate reservoir, post-stack methods are commonly used in the oilfield at present since pre-stack inversion is always limited by poor seismic data quality and insufficient logging data. In this paper, based on amplitude preserved seismic data processing and rock-physics analysis, pre-stack inversion is employed to predict the caved carbonate reservoir in TZ45 area by seriously controlling the quality of inversion procedures. These procedures mainly include angle-gather conversion, partial stack, wavelet estimation, low-frequency model building and inversion residual analysis. The amplitude-preserved data processing method can achieve high quality data based on the principle that they are very consistent with the synthetics. Besides, the foundation of pre-stack inversion and reservoir prediction criterion can be established by the connection between reservoir property and seismic reflection through rock-physics analysis. Finally, the inversion result is consistent with drilling wells in most cases. It is concluded that integrated with amplitude-preserved processing and rock-physics, pre-stack inversion can be effectively applied in the caved carbonate reservoir prediction.
Details
- Language :
- English
- ISSN :
- 16725107 and 19958226
- Volume :
- 8
- Issue :
- 4
- Database :
- Supplemental Index
- Journal :
- Petroleum Science
- Publication Type :
- Periodical
- Accession number :
- ejs26424066
- Full Text :
- https://doi.org/10.1007/s12182-011-0159-4