Patent · US Active

Internal jacket leg cutter and method

US9103088B2 · kind B2 · utility

6Cited by

9References

25Claims

0Family size

Assignee

TETRA Technologies, Inc. · US

Inventors

Galen R. Clark, II · Lafayette, US
Michael Todd Martin · Darmstadt, DE
Gary L. Siems · Lafayette, US

Key dates

Filing date	Jun 6, 2011
Grant date	Aug 11, 2015
Priority date	—
Expiry date	Jul 10, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T409/30644
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

An internal caisson/jacket leg cutter and method provides a frame having upper and lower end portions. The upper end portion has rigging that enables the frame to be lifted. Extensible arms are movably supported upon the frame. The arms extend and retract along generally radially extending lines. Extension of the arms enables them to contact the inside surface of a caisson/jacket leg and thus center and anchor the frame within the caisson/jacket leg interior. A cutting mechanism at the lower end portion of the frame includes one or more rotary cutters or milling devices that cut the caisson/jacket leg wall as these cutters traverse an arc shaped path, tracking the caisson/jacket leg wall.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.