Chen Wenhao1,2, Wang Zhizhang1,2, Hou Jiagen1,2, Wei Chao3
1. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, China;
2. College of Geosciences, China University of Petroleum, Beijing 102249, China;
3. Yanchang Oilfield Co. Ltd., Yan'an, Shaanxi 716000, China
Abstract:This article analysis the using principles and application conditions of strata slice technique, discuss the applicability and usage of strata slice technique. We set Lufeng 13-1 oil field as an example, based on theory of high resolution sequence stratigraphy, with the spectral decomposition technique, high resolution isochronal stratigraphic framework was built. In order to discuss the reasonable approach to predict reservoir lithology using strata slice, we collect various seismic attributes to analyze the distribution and evolution of sedimentary facies in minimum isochronous research unit with strata slice technique. The research shows that: we looked for lower-order isochronous stratigraphic interfaces maintained invariable in frequency-division seismic data, which can be properly determined minimum isochronous research unit of strata slice, and ensure standard interface items of strata slice has geophysical and depositional isochronous, lays the foundation for well-controlled seismic attributes of strata slice; Impedance inversion can be used as input data to identify lithology with strata slice. We use scale strata slice to extract seismic attributes with control of drilling layer, in order to make the strata slice more isochronous and explicit geological significance.
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