公开(公告)号：US20180128929A1

公开(公告)日：2018-05-10

申请号：US15346824

申请日：2016-11-09

Applicant: CHEVRON U.S.A. INC.

Inventor： Prasenjit ROY ,  Donna J. VENABLE ,  William SAVRAN

IPC: G01V1/30 ,  G01V1/28

CPC classification number: G01V1/306 ,  G01V1/282 ,  G01V2210/614 ,  G01V2210/6244

Abstract: A method is described for porosity mapping of low porosity subsurface reservoirs using seismic data and well logs. The method may compute dry-frame rock properties using fluid substitution modeling based on the well log data; perform porosity expansion of the dry-frame rock properties based on rock physics to generate expanded rock properties; generate synthetic seismic data based on the expanded rock properties; calibrate the seismic dataset with the synthetic seismic data; generate an estimated porosity map based on the calibrated seismic dataset and the synthetic seismic data; and identify geologic features based on the estimated porosity map. The method may be executed by a computer system.