Wells – Submerged well – Means removably connected to permanent well structure
Reexamination Certificate
2005-05-10
2005-05-10
Pezzuto, Robert E. (Department: 3671)
Wells
Submerged well
Means removably connected to permanent well structure
C166S368000, C166S075130
Reexamination Certificate
active
06889770
ABSTRACT:
Method for protecting subsea installations against cooling which leads to hydrate formation, in particular during production halts. This is achieved by thermally isolating portions of the installation (1) against the surrounding water (2), and particularly by completely encompassing the subsea installation (1) by means of a cap (3) which seals against the surrounding water (2). The cap (3) comprises several elements of which each separately can be exposed to cooling and internal hydrate formation. The invention also comprises a thermally isolating apparatus, adapted for protecting subsea installations (1) against cooling, which involves a risk for hydrate formation. An apparatus (3, 9) for implementing the method comprises a relatively tight-fitting cap (3) which encompasses at least two of the elements to be protected from cooling. Thus, the water inside the cap (3) is kept separately from the surrounding water (2) and evenly distribute the heat energy present under the cap (3) to all the elements encompassed by the cap.
REFERENCES:
patent: 3063500 (1962-11-01), Logan
patent: 3556218 (1971-01-01), Talley et al.
patent: 3589133 (1971-06-01), Lowd et al.
patent: 3592263 (1971-07-01), Nelson
patent: 3703207 (1972-11-01), Horton
patent: 3742985 (1973-07-01), Rubenstein
patent: 3866676 (1975-02-01), Burns
patent: 3882937 (1975-05-01), Robinson
patent: 4258794 (1981-03-01), Sizer et al.
patent: 4273472 (1981-06-01), Piazza et al.
patent: 4452312 (1984-06-01), Roblin
patent: 4558744 (1985-12-01), Gibb
patent: 4715439 (1987-12-01), Fleming
patent: 4790375 (1988-12-01), Bridges et al.
patent: 4919210 (1990-04-01), Schaefer, Jr.
patent: 5176471 (1993-01-01), Frafjord et al.
patent: 5259458 (1993-11-01), Schaefer et al.
patent: 5795102 (1998-08-01), Corbishley
patent: 6009940 (2000-01-01), Eck et al.
patent: 6365268 (2002-04-01), Williams et al.
patent: 6415868 (2002-07-01), Janoff et al.
patent: 6520261 (2003-02-01), Janoff et al.
patent: 2 299 845 (1996-10-01), None
patent: 901658 (1990-04-01), None
Augilera Patrice
Hestetun Steinar
Qvam Helge Andreas
ABB Offshore Systems AS
Beach Thomas A
Cohen & Pontani, Lieberman & Pavane
Pezzuto Robert E.
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