公开(公告)号：US20210131279A1

公开(公告)日：2021-05-06

申请号：US16824059

申请日：2020-03-19

Applicant: Chevron U.S.A. Inc.

Inventor： Michael Ryan Fitzsimmons ,  Rollyn Rousel Samson Reyes

IPC: E21B49/00 ,  E21B45/00

Abstract: Downhole casing temperature may be predicated at the drill string/casing interface as a function of side force on the casing due to drill string tension, the speed or rate of penetration of the drill string in the axial direction, the rate of rotation of the drill string, and a calibrated/assumed friction factor. Predicted down hole casing temperature may be used as a proxy to monitor casing integrity.

公开(公告)号：US11060390B2

公开(公告)日：2021-07-13

申请号：US16824059

申请日：2020-03-19

Applicant: Chevron U.S.A. Inc.

Inventor： Michael Ryan Fitzsimmons ,  Rollyn Rousel Samson Reyes

IPC: E21B44/00 ,  E21B45/00 ,  E21B49/00 ,  E21B47/007

Abstract: Downhole casing temperature may be predicated at the drill string/casing interface as a function of side force on the casing due to drill string tension, the speed or rate of penetration of the drill string in the axial direction, the rate of rotation of the drill string, and a calibrated/assumed friction factor. Predicted down hole casing temperature may be used as a proxy to monitor casing integrity.