Title:
A SYSTEM AND METHOD FOR STABILIZING A RISER
Document Type and Number:
WIPO Patent Application WO/2021/006743
Kind Code:
A9
Abstract:
A system and a method for stabilizing a drilling pipe and/or production riser (3) extending between a wellhead coupling (311) of a subsea well (1) and a well valve assembly (22) on a surface installation (2) which is floating in a water mass (4) or is supported on a seabed (51) and projects up above the water mass (4), wherein the wellhead coupling (311) forms a fluid-tight connection of a high-pressure barrier (12) of the well (1) and the drilling pipe and/or production riser (3), and wherein the drilling pipe and/or production riser (3) is subjected to a horizontal load component (Lh) that generates a bending moment (Mw) around the wellhead coupling (311), the system being c h a r a c t e r i z e d i n that it comprises: - a foundation (14) to be positioned on the seabed (51); and - a supporting structure (32) arranged to be connected to a lower portion (31) of the drilling pipe and/or production riser (3), the supporting structure (32) projecting outwards from the drilling pipe and/or production riser (3) and cooperating with the foundation (14) to absorb a portion of the bending moment (Mw) around the wellhead coupling (311).
Inventors:
MATHIS WOLFGANG (NO)
Application Number:
PCT/NO2020/050172
Publication Date:
June 10, 2021
Filing Date:
June 22, 2020
Export Citation:
Assignee:
NEODRILL AS (NO)
International Classes:
E21B17/01
Attorney, Agent or Firm:
HÅMSØ PATENTBYRÅ AS (NO)
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