Pre-stack basis pursuit seismic inversion for brittleness of shale

• DOI: 10.1007/s12182-015-0056-3
• Publication Date: 2015-10-13T06:05:20Z
• Authors: Xing-Yao Yin; Xiao-Jing Liu; Zhao-Yun Zong
• Keywords: Brittleness; Poisson's ratio; Anomaly (physics)

Brittleness of rock plays a significant role in exploration and development shale gas reservoirs. Young's modulus Poisson's ratio are the key parameters for evaluating brittleness because their combination relationship can quantitatively characterize brittleness. The high-value anomaly low-value represent high shale. technique pre-stack amplitude variation with angle inversion allows geoscientists to estimate from seismic data. A model constrained basis pursuit method is proposed stably estimating ratio. Test results synthetic gather data show that be estimated reasonably. With novel method, inverted real field focus layer boundaries better, which helpful us evaluate evaluation good agreement well interpretation.