US3392784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well tool with releasable anchor assembly
Assignee: Individual
•
Filing: 1966-11-29
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Granted: 1968-07-16
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Expires: 1986-11-29
Abstract
No abstract record available.
Inventors
- 👤 Joe R Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:06
CPC Classifications
E; E21; E21B; E21B23/00; E21B23/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A PERMANENT-TYPE WELL TOOL ADAPTED TO BE SET IN A WELL BORE, COMPRISING A TUBULAR SUPPORT, AN UPPER ABUTMENT SECURED TO SAID TUBULAR SUPPORT, MEANS FOR RELEASABLY CONNECTING A TUBING STRING TO SAID TUBULAR SUPPORT, AN ANCHORING ASSEMBLY MOUNTED ON SAID TUBULAR SUPPORT BELOW SAID UPPER ABUTMENT AND HAVING GRIPPING ELEMENTS ADAPTED TO BE MOVED OUTWARDLY INTO PIPEGRIPPING POSITION IN A WELL BORE, A LOWER ABUTMENT CONNECTED TO SAID ANCHORING ASSEMBLY, A VALVE SLEEVE ADAPTED TO BE CONNECTED TO A TUBING STRING AND DEFINING A BY-PASS PORT, SAID VALVE SLEEVE ADAPTED TO EXTEND DOWNWARDLY THROUGH SAID TUBULAR SUPPORT WHEN THE TUBING STRING IN WHICH IT IS CONNECTED IS CONNECTED BY SAID RELEASABLE CONNECTING MEANS TO SAID TUBULAR SUPPORT, SETTING MEANS THREADEDLY ENGAGING SAID LOWER ABUTMENT,
Claim 2
Dependent Claim
125 words
A PERMANENT-TYPE WELL TOOL ADAPTED TO BE SET IN A WELL BORE, COMPRISING A TUBULAR SUPPORT, AN UPPER ABUTMENT SECURED TO SAID TUBULAR SUPPORT, MEANS FOR RELEASABLY CONNECTING A TUBING STRING TO SAID TUBULAR SUPPORT, AN ANCHORING ASSEMBLY MOUNTED ON SAID TUBULAR SUPPORT BELOW SAID UPPER ABUTMENT AND HAVING GRIPPING ELEMENTS ADAPTED TO BE MOVED OUTWARDLY INTO PIPEGRIPPING POSITION IN A WELL BORE, A LOWER ABUTMENT CONNECTED TO SAID ANCHORING ASSEMBLY, A VALVE SLEEVE ADAPTED TO BE CONNECTED TO A TUBING STRING AND DEFINING A BY-PASS PORT, SAID VALVE SLEEVE ADAPTED TO EXTEND DOWNWARDLY THROUGH SAID TUBULAR SUPPORT WHEN THE TUBING STRING IN WHICH IT IS CONNECTED IS CONNECTED BY SAID RELEASABLE CONNECTING MEANS TO SAID TUBULAR SUPPORT, SETTING MEANS THREADEDLY ENGAGING SAID LOWER ABUTMENT,
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) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |