公开(公告)号：US20250101850A1

公开(公告)日：2025-03-27

申请号：US18474986

申请日：2023-09-26

Applicant: ARAMCO SERVICES COMPANY

Inventor： Chicheng Xu ,  Tao Lin ,  Zainab Al Ibrahim ,  Yaser Abdullah Alzayer ,  Weichang Li ,  Lei Fu

IPC: E21B44/00 ,  G01N33/24 ,  G01V5/06 ,  G06T7/32

Abstract: A method may use a core sampling system for collecting a core sample with a reference log of a first property. The method may use a wellbore logging system for recording uncalibrated well logs with a target log of the first property. The method may use a computer processor for obtaining an uncalibrated geological model, determining a bulk-shift depth correction based on a first cost function, forming a bulk-shifted log by applying the bulk-shift depth correction to the target log, identifying a plurality of log event pairs, determining, for each of the log event pairs, a local-shift depth correction based on a second cost function, forming a local-shift depth correction table from the local-shift depth correction for the log event pairs, and forming a calibrated geological model based, at least in part, on the uncalibrated geological model and the local-shift depth correction table.

公开(公告)号：US20250067172A1

公开(公告)日：2025-02-27

申请号：US18453768

申请日：2023-08-22

Applicant: ARAMCO SERVICES COMPANY

Inventor： Chicheng Xu ,  Tao Lin ,  Lei Fu ,  Yaser Abdullah Alzayer ,  Weichang Li

IPC: E21B49/00

Abstract: Systems and methods for automatic well log normalization are disclosed. The methods include acquiring a target log in a target well and a reference log in a reference well; identifying a stratigraphic interval in the target well and in the reference well; projecting the target log from the target well onto a pseudo target log in a pseudo target well and projecting the reference log from the reference well onto a pseudo reference log in a pseudo reference well; identifying lithologies from a first histogram of the pseudo target log and a second histogram of the pseudo reference log; determining, using the first histogram and the second histogram a regression relationship between the pseudo target log and the pseudo reference log; applying the regression relationship to the pseudo target log to generate a normalized pseudo target log; and determining a reservoir quality of the reservoir that produces hydrocarbons.