公开(公告)号：US20230067499A1

公开(公告)日：2023-03-02

申请号：US17461294

申请日：2021-08-30

Applicant: Landmark Graphics Corporation

Inventor： Robello Samuel ,  William Wade Samec ,  Roddy Hebert ,  Robert H. Gales ,  Abbas Sami Eyuboglu

IPC: E21B33/14 ,  E21B33/134

Abstract: A location of a cut and an amount of force to be used in a pull operation for a plug & abandonment (P&A) operation can be determined. Measurements of at least one characteristic of fluids and solids disposed in an annulus defined between a casing and a wall of a wellbore can be received. A total fluid and solid friction force drag can be determined using hydrostatic force that is determined from the measurements. A mechanical friction force drag can be determined based on a weight of the casing. The mechanical friction force drag and the total fluid and solid friction force drag can be used to determine a friction factor. The friction factor can be used to determine a depth location at which to cut the casing and a pull force for pulling the casing from the wellbore in the P&A operation.

公开(公告)号：US11761298B2

公开(公告)日：2023-09-19

申请号：US17461294

申请日：2021-08-30

Applicant: Landmark Graphics Corporation

Inventor： Robello Samuel ,  William Wade Samec ,  Roddy Hebert ,  Robert H. Gales ,  Abbas Sami Eyuboglu

IPC: E21B29/00 ,  E21B47/09 ,  E21B33/14 ,  E21B33/134

CPC classification number: E21B33/14 ,  E21B29/002 ,  E21B33/134 ,  E21B47/09

Abstract: A location of a cut and an amount of force to be used in a pull operation for a plug & abandonment (P&A) operation can be determined. Measurements of at least one characteristic of fluids and solids disposed in an annulus defined between a casing and a wall of a wellbore can be received. A total fluid and solid friction force drag can be determined using hydrostatic force that is determined from the measurements. A mechanical friction force drag can be determined based on a weight of the casing. The mechanical friction force drag and the total fluid and solid friction force drag can be used to determine a friction factor. The friction factor can be used to determine a depth location at which to cut the casing and a pull force for pulling the casing from the wellbore in the P&A operation.