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Application of pre-stack simultaneous inversion to predict gas-bearing dolomite reservoir: a case study from Sichuan Basin, China.
- Source :
- Carbonates & Evaporites; Sep2019, Vol. 34 Issue 3, p1191-1201, 11p
- Publication Year :
- 2019
-
Abstract
- Pre-stack simultaneous inversion is a seismic exploration technology which is widely applied to recognize lithology and detect oil and gas by analyzing the feature of amplitude variation versus offset (AVO). A gas-bearing reservoir can cause an obvious change in P-impedance and density. To effectively discriminate gas-bearing dolomite within Longwangmiao Fm. in Sichuan Basin of China, the pre-stack inversion method is employed by strict quality procedures. These procedures mainly include rock physics analysis, AVO modeling and pre-stack simultaneous inversion. Using the technology, P-impedance, S-impedance and density are obtained simultaneously. The distribution of gas-bearing dolomite is identified by P-impedance versus density cross-plotting from well data. The final prediction result indicates the existence of gas-bearing dolomite in the upper part of Longwangmiao Fm. in the study area, which is consistent with well data. Generally, pre-stack simultaneous inversion represents an effective method to predict gas-bearing dolomite reservoir and should be applicable in other study areas. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 08912556
- Volume :
- 34
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Carbonates & Evaporites
- Publication Type :
- Academic Journal
- Accession number :
- 138340828
- Full Text :
- https://doi.org/10.1007/s13146-019-00491-6