公开(公告)号：US10036235B2

公开(公告)日：2018-07-31

申请号：US15320036

申请日：2015-06-24

Applicant: SHELL OIL COMPANY

Inventor： Walter Stam ,  Antonius Leonardus Maria Wubben ,  Djurre Hans Zijsling

IPC: E21B43/10 ,  E21B33/14 ,  E21B23/01 ,  E21B33/12

CPC classification number: E21B43/105 ,  E21B23/01 ,  E21B33/1204 ,  E21B33/14 ,  E21B43/103

Abstract: In an expansion assembly (1), an expandable bottom plug (10) is arranged below a primary expander (6) for expanding a tubular element (2). The expandable bottom plug (10) includes an expandable tubular clad element with a sealing section for sealing the expanded clad element to a lower portion of the expanded tubular element (2), and an anchoring section for anchoring the expanded clad element to the lower portion of the expanded tubular element. A secondary expander (22) is provided for radially expanding the clad element in the lower portion of the expanded tubular element by axial movement of the secondary expander through the clad element.

公开(公告)号：US10316627B2

公开(公告)日：2019-06-11

申请号：US15503086

申请日：2015-08-10

Applicant: SHELL OIL COMPANY

Inventor： David Paul Brisco ,  Walter Stam ,  Antonius Leonardus Maria Wubben

IPC: E21B43/10 ,  E21B7/20

Abstract: In an assembly for lowering and expanding a tubular element in a borehole on an expansion string, at least part of the weight of the tubular element is transmitted to the expansion string via an internal upset and a support protruding from an outer surface of the expansion string below the internal upset.

公开(公告)号：US11359455B2

公开(公告)日：2022-06-14

申请号：US17251319

申请日：2019-06-07

Applicant: SHELL OIL COMPANY

Inventor： Frank Ruckert ,  Walter Stam

IPC: E21B33/14 ,  E21B17/10

Abstract: An elastomer sleeve is applied to a wellbore tubular. The elastomer sleeve, which defines a circumference around longitudinal bore in a longitudinal direction, is brought in an elastically stretched condition by applying a stretching force to the elastomer sleeve. While the elastomer sleeve is kept in the elastically stretched condition, it is moved in the longitudinal direction over the wellbore tubular to a selected position on the wellbore tubular whereby the wellbore tubular extends through the bore. The elastomer sleeve is then snuggly fitted to an outside surface of the wellbore tubular by relaxing the elastically stretching force. The thus prepared wellbore tubular may be lowered into a wellbore in the Earth, and cement may be pumped on the outside of the wellbore tubular to form a cement sheath which fully surrounds the elastomer sleeve.