公开(公告)号：US20220220839A1

公开(公告)日：2022-07-14

申请号：US17144677

申请日：2021-01-08

Applicant: ARAMCO SERVICES COMPANY

Inventor： Hui-Hai Liu ,  Jilin Zhang ,  Huseyin Onur Balan ,  Feng Liang

IPC: E21B47/003 ,  E21B43/26

Abstract: A method for determining SRV and EUR includes: monitoring an amount and a density of a hydrocarbon fluid produced from the production well; obtaining a cumulative amount of the fluid that has accumulated from a beginning of production; obtaining a relationship between the cumulative amount and a square root of the time; determining a deviation point where the relationship changes from linear to non-linear; determining a deviation amount of the fluid corresponding to the deviation point; determining a first density of the hydrocarbon fluid at the beginning of production, a second density at a pore pressure equal to a bottom hole pressure in the production well, a first porosity at the beginning of production, and a second porosity for a pore pressure equal to the bottom hole pressure; and determining SRV and the EUR based on the deviation amount, the first and second densities, and the first and second porosities.

公开(公告)号：US11702924B2

公开(公告)日：2023-07-18

申请号：US17144677

申请日：2021-01-08

Applicant: ARAMCO SERVICES COMPANY

Inventor： Hui-Hai Liu ,  Jilin Zhang ,  Huseyin Onur Balan ,  Feng Liang

IPC: E21B43/26 ,  E21B47/003

CPC classification number: E21B47/003 ,  E21B43/26 ,  E21B2200/20

Abstract: A method for determining SRV and EUR includes: monitoring an amount and a density of a hydrocarbon fluid produced from the production well; obtaining a cumulative amount of the fluid that has accumulated from a beginning of production; obtaining a relationship between the cumulative amount and a square root of the time; determining a deviation point where the relationship changes from linear to non-linear; determining a deviation amount of the fluid corresponding to the deviation point; determining a first density of the hydrocarbon fluid at the beginning of production, a second density at a pore pressure equal to a bottom hole pressure in the production well, a first porosity at the beginning of production, and a second porosity for a pore pressure equal to the bottom hole pressure; and determining SRV and the EUR based on the deviation amount, the first and second densities, and the first and second porosities.