US3299955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well tool apparatus
Assignee: Individual
•
Filing: 1964-01-17
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Granted: 1967-01-24
•
Expires: 1984-01-17
Abstract
No abstract record available.
Inventors
- 👤 Jr John S Page
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:42
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1294; E21B33/1295
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
146 words
IN THE METHOD OF CONTROLLING A WELL INTO WHICH A STRING OF PRODUCTION TUBING IS RUN, THE STRING SUPPORTING SLIP, PACKER AND VALVE ASSEMBLIES CHARACTERIZED AS OPERABLE RESPECTIVELY TO ANCHOR THE STRING TO THE CASING, TO PACK-OFF BETWEEN THE STRING AND CASING AND TO CONTROL VERTICAL BY-PASSING AROUND THE PACKER OF FLUID IN THE ANNULAR SPACE BETWEEN THE STRING AND CASING, THE VALVE ASSEMBLY ALSO CHARACTERIZED AS FLUID PRESSURE OPERABLE, THE STEPS THAT INCLUDE RUNNING THE STRING INTO THE WELL WITH THE STEPS THAT INCLUDE RUNNING THE STRING INTO THE WELL ING SUFFICIENT FLUID PRESSURE INTO THE STRING FOR COMMUNICATION TO SAID ASSEMBLIES TO OPERATE THE SLIPS FOR ANCHORING THE STRING TO THE CASING, TO OPERATE THE PACKER FOR PACKING OFF BETWEEN THE STRING AND CASING, AND TO OPERATE THE VALVE TO SHUNT OFF BY-PASSING COMMUNICATION AROUND THE PACKER, AND INCLUDING THE FURTHER STEP OF INTRODUC-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |