Well drilling and servicing barge including bridge and rig structure and methods
Patent
·
OSTI ID:5595152
This barge for off-shore drilling and well servicing is constructed so that it can be raised above the water or sunk in shallow water. A caisson or well head supporting structure is sunk beyond one end of the barge. A small platform is then mounted upon the caisson and the barge is moved to a safe working distance, about 50 feet away. This minimizes fire and blowout damage. A combination bridge, derrick floor and derrick mast unit joins the barge and platform. The derrick mast is pivoted and can be raised into a vertical operating position over the derrick floor. The drilling mast also can be used in installing caissons, or in structure salvaging operations.
- Assignee:
- De Long Corp.
- Patent Number(s):
- US 3001592
- OSTI ID:
- 5595152
- Country of Publication:
- United States
- Language:
- English
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