Application of Sh S-Wave Data in Lithologic Trap Identification

Autor: Qiao Shi, Yaling Wang, Zhiwen Deng, Guo Jiru, Qian Zhao, Tan Wei, Chen Guowen, Junyong Zhang
Rok vydání: 2021
Předmět:
Zdroj: Day 1 Tue, March 23, 2021.
DOI: 10.2523/iptc-21796-ms
Popis: The biogas lithologic reservoirs in Sanhu Area of the Qaidam Basin has a broad exploration prospect, however, the demands of structural implementation and reservoir prediction can hardly be met with the existing P-wave seismic data due to the thin thickness of single sandstone layers, the rapid lateral changes and the low prediction accuracy of lithologic reservoirs. The SH-wave data has a higher resolution ability in lithology prediction. I can better reflect the lateral change features of formations. Because few SH-wave logging data are available and they are in accurate in the current study area, the SH-wave velocity is estimated through petrophysical modeling and the calibration and horizon interpretation of the SH-wave data are realized combined with the P- and SH-wave matching technology. Through the inversion of S-wave data,the lithological distribution of formations are predicted in combination with the comrehensive analysis of P-wave data, which provides a favorable basis for the survey of lithologic gas reservoir in the research area and achieves a good good result. In this way,a set of reservoir prediction methods and processes suitable for the shallow biogas lithological exploration in the Sanhu Area have formed initially.
Databáze: OpenAIRE