公开(公告)号：US20210356614A1

公开(公告)日：2021-11-18

申请号：US16927364

申请日：2020-07-13

Applicant: CGG SERVICES SAS

Inventor： Benjamin ROURE

IPC: G01V1/30 ,  G06F17/14

Abstract: Methods and apparatuses characterize fracture orientations in orthorhombic adjacent layer. Seismic data with azimuthal coverage enables calculating Fourier coefficients of reflectivity at an interface between the orthorhombic adjacent layers. The phases of 2nd and 4th FCs may be used to infer the fracture orientations in the orthorhombic adjacent layers. Analysis of 2nd and 4th Fourier coefficients' phases for different incidence angles may indicate that the fracture orientations in the orthorhombic adjacent layers are aligned, orthogonal, at 45°, that one of the layers is isotropic, etc.

公开(公告)号：US20170322331A1

公开(公告)日：2017-11-09

申请号：US15329458

申请日：2015-08-18

Applicant: CGG SERVICES SAS

Inventor： Benjamin ROURE

IPC: G01V1/28 ,  G01V1/30

CPC classification number: G01V1/284 ,  G01V1/301 ,  G01V1/305

Abstract: PP and PS seismic data are jointly inverted in a stratigraphic grid, using different time axes for PP and PS reflections. A ratio of PP and of PS waves'travel times inside a same layer cell maintained to be a function of a ratio of a P-wave propagation velocity and of an S-wave propagation velocity therein. Since PP and PS seismic amplitudes and travel times are due to elastic properties of the same structure, they can be inverted at the same time to provide better estimates of these elastic properties.