US3419074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well tools
Assignee: Otis Engineering Corp
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Filing: 1966-06-10
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Granted: 1968-12-31
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Expires: 1986-06-10
Abstract
No abstract record available.
Inventors
- 👤 Norman F Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:51
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/127; E21B23/00; E21B23/08; E21B43/00; E21B43/12; E21B43/121; E21B43/122; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/2934; Y10T137/8593; Y10T137/86493; Y10T137/86509
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
149 words
APPARATUS FOR INSTALLING AND REMOVING WELL TOOL MEANS IN A FLOW CONDUCTOR INCLUDING SLIDING SLEEVE VALVE MEANS HAVING SLEEVE MEANS MOVABLE BETWEEN OPEN AND CLOSED POSITIONS AND MEANS FOR RELEASABLY LOCKING WELL TOOL MEANS WITHIN SAID SLEEVE VALVE MEANS, COMPRISING: FIRST SEAL MEANS SLIDABLE IN SAID FLOW CONDUCTOR; FIRST SLEEVE SHIFTING MEANS CONNECTED WITH SAID FIRST SEAL MEANS FOR MOVING SAID SLEEVE MEANS IN A FIRST DIRECTION; DETENT MEANS CONNECTED WITH SAID FIRST SLEEVE SHIFTING MEANS FOR RELEASABLY HOLDING SAID APPARATUS AGAINST MOVEMENT WITHIN SAID FLOW CONDUCTOR; SECOND SLEEVE SHIFTING MEANS CONNECTED WITH SAID DETENT MEANS FOR MOVING SAID SLEEVE MEANS IN A SECOND DIRECTION; SECOND SEAL MEANS SLIDABLE IN SAID FLOW CONDUCTOR CONNECTED WITH SAID SECOND SLEEVE SHIFTING MEANS; AND WELL TOOL SUPPORT MEANS CONNECTED WITH SAID SECOND SEAL MEANS FOR HOLDING A WELL TOOL MEANS DURING INSTALLATION AND REMOVAL OF SAID TOOL MEANS IN SAID FLOW CONDUCTOR.
Claim 2
Dependent Claim
149 words
APPARATUS FOR INSTALLING AND REMOVING WELL TOOL MEANS IN A FLOW CONDUCTOR INCLUDING SLIDING SLEEVE VALVE MEANS HAVING SLEEVE MEANS MOVABLE BETWEEN OPEN AND CLOSED POSITIONS AND MEANS FOR RELEASABLY LOCKING WELL TOOL MEANS WITHIN SAID SLEEVE VALVE MEANS, COMPRISING: FIRST SEAL MEANS SLIDABLE IN SAID FLOW CONDUCTOR; FIRST SLEEVE SHIFTING MEANS CONNECTED WITH SAID FIRST SEAL MEANS FOR MOVING SAID SLEEVE MEANS IN A FIRST DIRECTION; DETENT MEANS CONNECTED WITH SAID FIRST SLEEVE SHIFTING MEANS FOR RELEASABLY HOLDING SAID APPARATUS AGAINST MOVEMENT WITHIN SAID FLOW CONDUCTOR; SECOND SLEEVE SHIFTING MEANS CONNECTED WITH SAID DETENT MEANS FOR MOVING SAID SLEEVE MEANS IN A SECOND DIRECTION; SECOND SEAL MEANS SLIDABLE IN SAID FLOW CONDUCTOR CONNECTED WITH SAID SECOND SLEEVE SHIFTING MEANS; AND WELL TOOL SUPPORT MEANS CONNECTED WITH SAID SECOND SEAL MEANS FOR HOLDING A WELL TOOL MEANS DURING INSTALLATION AND REMOVAL OF SAID TOOL MEANS IN SAID FLOW CONDUCTOR.
Claim 3
Independent Claim
116 words
A METHOD OF INSTALLING DEVICES IN A WELL HAVING A TUBING STRING, A PLURALITY OF LOCKING NIPPLES IN SAID TUBING STRING, EACH NIPPLE HAVING A SELECTIVE SEAT FOR ONE OF SAID DEVICES, COMPRISING: THE STEPS OF INSERTING A TRAIN OF SAID DEVICES IN SAID TUBING STRING, PUMPING A FLUID INTO SAID TUBING STRING ABOVE SAID TRAIN TO MOVE SAID TRAIN DOWN SAID TUBING STRING TO A LOWER PORTION BELOW THE LOCKING NIPPLES, REVERSING THE FLOW OF FLUID IN THE TUBING STRING TO MOVE SAID TRAIN UP SAID TUBING STRING AND SEAT AND LATCH EACH DEVICE IN THE SELECTIVE LOCKING NIPPLE IN WHICH IT WILL SEAT UNTIL ALL OF SAID DEVICES ARE SEATED IN THEIR LOCKING NIPPLES.
Claim 4
Independent Claim
116 words
A METHOD OF INSTALLING DEVICES IN A WELL HAVING A TUBING STRING, A PLURALITY OF LOCKING NIPPLES IN SAID TUBING STRING, EACH NIPPLE HAVING A SELECTIVE SEAT FOR ONE OF SAID DEVICES, COMPRISING: THE STEPS OF INSERTING A TRAIN OF SAID DEVICES IN SAID TUBING STRING, PUMPING A FLUID INTO SAID TUBING STRING ABOVE SAID TRAIN TO MOVE SAID TRAIN DOWN SAID TUBING STRING TO A LOWER PORTION BELOW THE LOCKING NIPPLES, REVERSING THE FLOW OF FLUID IN THE TUBING STRING TO MOVE SAID TRAIN UP SAID TUBING STRING AND SEAT AND LATCH EACH DEVICE IN THE SELECTIVE LOCKING NIPPLE IN WHICH IT WILL SEAT UNTIL ALL OF SAID DEVICES ARE SEATED IN THEIR LOCKING NIPPLES.
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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) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |