Wells – Submerged well – Means removably connected to permanent well structure
Patent
1988-09-30
1990-04-24
Massie, Jerome W.
Wells
Submerged well
Means removably connected to permanent well structure
166 85, 166363, 405226, E21B 33037
Patent
active
049192108
ABSTRACT:
An artificial submerged structure and underwater wellhead protection system for sheltering a submerged, permanently or temporarily abandoned wellhead utilizing a sloped structure configured to prevent nets, anchors, and the like from entangling or otherwise damaging the wellhead. The exemplary embodiment of the present invention is in the form of a pyramidal structure which is designed to rest on the sea floor, enveloping the wellhead. The present invention is prefabricated and designed to be assembled on the vessel above the well site before installation on the sea floor. The wellhead protector is designed to protect the wellhead from any anchoring, trawling or related activities, as well as protecting any nets or the like from becoming damaged due to entanglement with the wellhead. Anchoring means is also disclosed for providing a firm placement of the shelter relative the wellhead in those cases where large anchors, oyster dredges, trawl boards and the like might tend to knock over the structure. In addition to the protection structure, the present invention further includes a new and unique temporary abandonment cap for assisting in the automatic centering of the protector, as it is lowered over the wellhead, and for preventing debris from entering the wellbore. The structure is prefabricated at the plant site, transported to the area to be deployed, assembled on site, and lowered to the sea floor after the area has been cleared of debris.
REFERENCES:
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patent: 3516489 (1970-06-01), Jergins
patent: 3543846 (1970-12-01), Smith
patent: 4273472 (1981-06-01), Piazza et al.
patent: 4323118 (1982-04-01), Bergmann
patent: 4452312 (1984-06-01), Roblin
Massie Jerome W.
Melius Terry Lee
Pugh C. Emmett
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