公开(公告)号：US10754050B2

公开(公告)日：2020-08-25

申请号：US15840413

申请日：2017-12-13

Applicant: Chevron U.S.A. Inc.

Inventor： Marek Kacewicz ,  Maisha Lara Amaru

IPC: G01V1/28 ,  G01V1/30 ,  G01V99/00

Abstract: One embodiment of generating a pore pressure prediction through integration of seismic data and basin modeling includes crossplotting seismically derived velocities and effective stress at spatial coordinates; defining seismic transform functions and an uncertainty range from the crossplotting; transforming the seismically derived velocities into calculated effective stress using selected seismic transform functions and calculating pore pressure using an equation transforming the calculated effective stress into calculated pore pressure; identifying a subset of the selected seismic transform functions, where the subset is identified in response to the calculated pore pressure being adequate based on a comparison; using an inverse of the subset to convert the effective stress from the basin model into basin model derived velocities; building a hybrid velocity model by selecting velocities from the basin model derived velocities or from the seismically derived velocities in each region; and generating a digital seismic image using the hybrid velocity model.

公开(公告)号：US20180284305A1

公开(公告)日：2018-10-04

申请号：US15840413

申请日：2017-12-13

Applicant: Chevron U.S.A. Inc.

Inventor： Marek Kacewicz ,  Maisha Lara Amaru

IPC: G01V1/28 ,  G01V1/30

Abstract: One embodiment of generating a pore pressure prediction through integration of seismic data and basin modeling includes crossplotting seismically derived velocities and effective stress at spatial coordinates; defining seismic transform functions and an uncertainty range from the crossplotting; transforming the seismically derived velocities into calculated effective stress using selected seismic transform functions and calculating pore pressure using an equation transforming the calculated effective stress into calculated pore pressure; identifying a subset of the selected seismic transform functions, where the subset is identified in response to the calculated pore pressure being adequate based on a comparison; using an inverse of the subset to convert the effective stress from the basin model into basin model derived velocities; building a hybrid velocity model by selecting velocities from the basin model derived velocities or from the seismically derived velocities in each region; and generating a digital seismic image using the hybrid velocity model.