US3338302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for sub-sea apparatus
Assignee: Texaco Inc
•
Filing: 1964-08-24
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Granted: 1967-08-29
•
Expires: 1984-08-24
Abstract
No abstract record available.
Inventors
- 👤 Laurence M Hubby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:44
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/035; E21B33/0355
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
211 words
A CONTROL SYSTEM FOR OPERATING WELL SHUT-OFF APPARATUS LOCATED AT A SUB-SEA WELL HEAD, COMPRISING A PRESSURIZED SUB-SEA FLUID STORAGE VESSEL LOCATED ADJACENT SAID SUBSEA WELL HEAD, A SHORT LENGTH OF LARGE DIAMETER PIPE CONNECTING SAID PRESSURIZED SUB-SEA FLUID STORAGE VESSEL TO FLUID WELL SHUT-OFF APPARATUS FOR PASSING LARGE VOLUMES OF FLUID UNDER PRESSURE IN A SHORT TIME TO OPERATE SAID WELL SHUTOFF APPARATUS, A SUB-SEA FLUID SUMP VESSEL LOCATED ADJACENT SAID WELL HEAD, A SHORT LENGTH OF LARGE DIAMETER PIPE CONNECTING SAID SUB-SEA FLUID SUMP VESSEL TO SAID WELL SHUT-OFF APPARATUS FOR PASSING THE LARGE VOLUME OF FLUID IN A SHORT TIME WHICH IS DISPLACED BY AN OPERATION OF SAID SHUT-OFF APPARATUS, A SUB-SEA TWO POSITION FOUR-WAY VALVE CONNECTED TO BOTH SAID PRESSURIZED SUB-SEA FLUID STORAGE VESSEL PIPE FOR SELECTIVELY APPLYING SAID FLUID UNDER PRESSURE TO OPEN AND CLOSE SAID WELL SHUT-OFF APPARATUS AND TO SAID SUB-SEA FLUID SUMP VESSEL PIPE FOR CORRESPONDINGLY SELECTIVELY APPLYING THE FLUID DISPLACED BY SAID OPENING AND CLOSING OF SAID WELL SHUT-OFF APPARATUS TO SAID SUB-SEA FLUID SUMP VESSEL, A SURFACE LOCATED FLUID PRESSURE SOURCE, A SURFACE LOCATED TWO-WAY FOUR-POSITION VALVE FOR CONNECTING SAID SURFACE FLUID PRESSURE SOURCE TO SAID SUB-SEA TWO-POSITION FOUR-WAY VALVE TO PROVIDE REMOTE CONTROL OPERATION THEREOF, SURFACE LOCATED RECHARGING MEANS FOR
Claim 2
Dependent Claim
211 words
A CONTROL SYSTEM FOR OPERATING WELL SHUT-OFF APPARATUS LOCATED AT A SUB-SEA WELL HEAD, COMPRISING A PRESSURIZED SUB-SEA FLUID STORAGE VESSEL LOCATED ADJACENT SAID SUBSEA WELL HEAD, A SHORT LENGTH OF LARGE DIAMETER PIPE CONNECTING SAID PRESSURIZED SUB-SEA FLUID STORAGE VESSEL TO FLUID WELL SHUT-OFF APPARATUS FOR PASSING LARGE VOLUMES OF FLUID UNDER PRESSURE IN A SHORT TIME TO OPERATE SAID WELL SHUTOFF APPARATUS, A SUB-SEA FLUID SUMP VESSEL LOCATED ADJACENT SAID WELL HEAD, A SHORT LENGTH OF LARGE DIAMETER PIPE CONNECTING SAID SUB-SEA FLUID SUMP VESSEL TO SAID WELL SHUT-OFF APPARATUS FOR PASSING THE LARGE VOLUME OF FLUID IN A SHORT TIME WHICH IS DISPLACED BY AN OPERATION OF SAID SHUT-OFF APPARATUS, A SUB-SEA TWO POSITION FOUR-WAY VALVE CONNECTED TO BOTH SAID PRESSURIZED SUB-SEA FLUID STORAGE VESSEL PIPE FOR SELECTIVELY APPLYING SAID FLUID UNDER PRESSURE TO OPEN AND CLOSE SAID WELL SHUT-OFF APPARATUS AND TO SAID SUB-SEA FLUID SUMP VESSEL PIPE FOR CORRESPONDINGLY SELECTIVELY APPLYING THE FLUID DISPLACED BY SAID OPENING AND CLOSING OF SAID WELL SHUT-OFF APPARATUS TO SAID SUB-SEA FLUID SUMP VESSEL, A SURFACE LOCATED FLUID PRESSURE SOURCE, A SURFACE LOCATED TWO-WAY FOUR-POSITION VALVE FOR CONNECTING SAID SURFACE FLUID PRESSURE SOURCE TO SAID SUB-SEA TWO-POSITION FOUR-WAY VALVE TO PROVIDE REMOTE CONTROL OPERATION THEREOF, SURFACE LOCATED RECHARGING MEANS FOR
References Cited (Backward Citations)
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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) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |