US3606924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well tool for use in a tubular string
Assignee: Lynes Inc
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Filing: 1969-01-28
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Granted: 1971-09-21
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Expires: 1989-01-28
Abstract
Abstract A WELL TOOL INCORPORATING A REINFORCED INFLATABLE ELEMENT WHICH IS CARRIED BY THE DRILL STRING IN THE WELL BORE AND REMAINS DEFLATED DURING ROTARY DRILLING OPERATIONS WHICH CAN BE INFLATED TO SEAL OFF THE WELL BORE TO ENABLE VARIOUS OPERATIONS TO BE PERFORMED IN THE WELL BORE AND THE ELEMENT THEREAFTER DEFLATED AND ROTARY DRILLING OPERATIONS RESUMED. THIS OPERATION MAY BE REPEATED AS OFTEN AS DESIRED.
Inventors
- 👤 Billy C Malone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:45
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/127; E21B33/1277; E21B21/00; E21B21/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |