公开(公告)号：US20250075618A1

公开(公告)日：2025-03-06

申请号：US18458876

申请日：2023-08-30

Applicant: ARAMCO SERVICES COMPANY

Inventor： Dung T. Phan ,  Hong Phuc Nguyen ,  Chao Liu ,  Younane N. Abousleiman

IPC: E21B49/00 ,  E21B44/00 ,  E21B47/022 ,  E21B47/08

Abstract: A method for evaluating and controlling a washout region of a wellbore placed in a formation includes: obtaining information about the wellbore and the formation; establishing a washout indicator function as a function of time and location; computationally determining whether the washout region exists by calculating the washout indicator function on a cross section of the wellbore and the formation, at each depth in a specific depth range; and upon finding presence of the washout region in the specific depth range, quantifying the washout region. The washout indicator function returns: a negative value for a point within the formation; a positive value for a point within the washout region; and zero for a point on a boundary.