Well tools
Abstract
Abstract AN APPARATUS AND METHOD FOR CONTROLLING FLOW IN A WELL AFTER THE SAME HAS BEEN DRILLED, PARTICULARLY ADAPTABLE FOR SUBMARINE WELLS. THE INVENTION IS DIRECTED TOWARD WELL FLOW CONDUCTOR INSTALLATION UTILIZING EQUIPMENT, SUCH AS BLOW-OUT PREVENTERS, INSTALLED ON THE WELL DURING THE DRILLING THEREOF TO SUPPORT A FLOW CONDUCTOR AND FLOW CONTROL VALVE FOR CONTROLLING FLOW AND PERFORMING OPERATIONS ON THE WELL AFTER THE SAME HAS BEEN DRILLED, TOGETHER WITH AN IMPROVED FLOW CONDUCTOR SUPPORT, CONNECTOR AND FLOW CONTROL VALVE, WHICH ARE DESIGNED TO PROVIDE MEANS TO QUICKLY CLOSE IN THE WELL TO PREVENT UNDESIRED FLOW FROM THE WELL, AND TO PROVIDE AUTOMATIC BLOW-OUT PREVENTION.
Inventors
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Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |