Patent US4549390A successfully refreshed from Google Patents.
Patent US3305023A successfully refreshed from Google Patents.
US3305023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well tester with hydraulic coupling and retrievable valve
Assignee: Halliburton Co
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Filing: 1964-05-27
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Granted: 1967-02-21
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Expires: 1984-05-27
Abstract
No abstract record available.
Inventors
- 👤 David L Farley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:03
CPC Classifications
E; E21; E21B; E21B34/00; E21B34/06; E21B34/12; E21B34/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
AN APPARATUS FOR CONTROLLING FLUID FLOW WITHIN A WELL BORE, SAID APPARATUS COMPRISING: A FIRST PORTION; A SECOND PORTION UPON WHICH SAID FIRST PORTION IS MOUNTED FOR LIMITED TELESCOPING MOVEMENT; A THIRD PORTION UPON WHICH SAID SECOND PORTION IS MOUNTED FOR LIMITED TELESCOPING MOVEMENT; FIRST SLIDE VALVE MEANS CARRIED BY, AND OPERABLE IN RESPONSE TO TELESCOPING MOVEMENT OF, SAID FIRST AND SAID SECOND PORTIONS; SECOND SLIDE VALVE MEANS CARRIED BY, AND OPERABLE IN RESPONSE TO TELESCOPING MOVEMENT OF, SAID SECOND AND SAID THIRD PORTIONS; MEANS CARRIED BY SAID FIRST AND THIRD PORTIONS OPERABLE TO LIMIT RELATIVE MOVEMENT OF SAID FIRST AND THIRD PORTIONS AND PREVENT OPENING OF SAID SECOND VALVE MEANS AFTER THE OPENING OF SAID FIRST VALVE MEANS; AND MEANS INTERPOSED BETWEEN TWO TELESCOPINGLY ASSEMBLED PORTIONS OF SAID FIRST, SECOND AND THIRD PORTIONS AND ADAPTED TO IMPEDE WITHOUT PREVENTING RELATIVE TELESCOPING MOVEMENT OF SAID TWO TELESCOPINGLY ASSEMBLED PORTIONS.
Claim 2
Independent Claim
149 words
AN APPARATUS FOR CONTROLLING FLUID FLOW WITHIN A WELL BORE, SAID APPARATUS COMPRISING: A FIRST PORTION; A SECOND PORTION UPON WHICH SAID FIRST PORTION IS MOUNTED FOR LIMITED TELESCOPING MOVEMENT; A THIRD PORTION UPON WHICH SAID SECOND PORTION IS MOUNTED FOR LIMITED TELESCOPING MOVEMENT; FIRST SLIDE VALVE MEANS CARRIED BY, AND OPERABLE IN RESPONSE TO TELESCOPING MOVEMENT OF, SAID FIRST AND SAID SECOND PORTIONS; SECOND SLIDE VALVE MEANS CARRIED BY, AND OPERABLE IN RESPONSE TO TELESCOPING MOVEMENT OF, SAID SECOND AND SAID THIRD PORTIONS; MEANS CARRIED BY SAID FIRST AND THIRD PORTIONS OPERABLE TO LIMIT RELATIVE MOVEMENT OF SAID FIRST AND THIRD PORTIONS AND PREVENT OPENING OF SAID SECOND VALVE MEANS AFTER THE OPENING OF SAID FIRST VALVE MEANS; AND MEANS INTERPOSED BETWEEN TWO TELESCOPINGLY ASSEMBLED PORTIONS OF SAID FIRST, SECOND AND THIRD PORTIONS AND ADAPTED TO IMPEDE WITHOUT PREVENTING RELATIVE TELESCOPING MOVEMENT OF SAID TWO TELESCOPINGLY ASSEMBLED PORTIONS.
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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |