FRS^TM Fracture-Based Pre-Stack Elastic Wave Impedance Inversion of Fuyang Oil Layer in Songliao Basin

Abstract:

The later-period structure of Fuyang oil layer is complex and its reservoir is mostly composed by the sand bodies of riverways. The oil and gas reservoir features obvious concealment, and also is difficult to identify. To accurately describe the reservoir, a pre-stack elastic wave impedance inversion was made for Fuyang oil layer in Songliao Basin using FRS^TM fracture. The pre-stack inversion results statistical error was small if the thickness of sandstone was greater than 3m. The error was close to 100% according to the standard less than 20%, namely the pre-stack inversion prediction accuracy was higher. However, the statistical error was greater and the pre-stack inversion prediction accuracy decreased if the thickness of sandstone was less than 3m, so the prediction result could be only used as a reference value. Therefore, the pre-stack elastic wave impedance inversion can produce a significant effect for the anisotropic reservoirs of complex later-period structure, thin sand body, and complex changes, and can meet the needs of the oil field exploration and development.

• Periodical: Applied Mechanics and Materials (Volume 443)
• Pages: 675-680
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.443.675
• Online since: October 2013
• Authors: Xin Rong Zhang, Shi Fang, Jin Ping Liu, Mao Xin Yang
• Keywords: Fuyang Oil Layer, Pre-Stack Elastic Wave Impedance Inversion, Songliao Basin

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