Fracture prediction based on attenuative anisotropy theory and its application to a shale gas reservoir

Author:

Li Shikai12,Wen Xiaotao1,Pu Yong2,Miao Zhiwei2,Yuan Meng2

Affiliation:

1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology , Chengdu, 610049 , China

2. Exploration Branch Co. , SINOPEC, Chengdu, 610041 , China

Abstract

AbstractShale gas reservoirs require artificial hydraulic fracturing to achieve commercial gas production. Continental Jurassic shale reservoirs have several thin interlayers (e.g. sandstone and carbonate), which lead to pseudo-anisotropy of the seismic amplitude and velocity, and traditional technology for predicting anisotropic fractures has difficulty in identifying a true target. Based on the traditional theory of azimuthal anisotropy and the equivalent medium theory, in this paper, the approximate formula for the reflection coefficient of attenuating anisotropy and the equation for the azimuthal attenuating elastic impedance are derived. With the objective function established using Bayesian and group sparse inversion methods, parameters such as the fluid terms and fracture characteristics are obtained by solving the elastic matrix, and a highly accurate prediction of the 3D fracture density is obtained. The validity of this method is confirmed via a test on a single well and application to actual seismic data for a shale gas reservoir.

Funder

National Natural Science Foundation of China

National Science and Technology Support Project of China

Publisher

Oxford University Press (OUP)

Subject

Management, Monitoring, Policy and Law,Industrial and Manufacturing Engineering,Geology,Geophysics

Reference24 articles.

1. P-wave anisotropy from azimuthal velocity and AVO using wide-azimuthal 3D seismic data;AL-Marzong;SEG Technical Program Expanded Abstracts,2004

2. Time-domain finite-difference modeling for attenuative anisotropic media;Bai;Geophysics,2016

3. Estimation of fracture parameters from reflection seismic data. Part I: HTI model due to a single fracture set;Bakulin;Geophysics,2000

4. Theory of propagation of elastic waves in a fluid saturated porous solid. I. low frequency range;Biot,1956

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