Patent US3145778A successfully refreshed from Google Patents.
US3145778A
Expired / Lapsed
US
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Well completion apparatus
Assignee: Pan American Petroleum Corp
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Filing: 1961-11-02
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Granted: 1964-08-25
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Expires: 1981-11-02
Abstract
No abstract record available.
Inventors
- 👤 Grekel Howard
- 👤 George C Howard
- 👤 Karol L Hujsak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:48
CPC Classifications
E; E21; E21B; E21B37/00; E21B37/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
APPARATUS FOR USE IN A WELL COMPRISING TUBING, A PERFORATED LINER SURROUNDING SAID SLIDABLY MOUNTED ON SAID TUBING WHICH OPENS INTO SAID LINER, MEANS FOR OPENING AND CLOSING THE BASE OF SAID TUBING, SEALING MEANS AT THE UPPER END OF SAID LINER AND BETWEEN SAID TUBING AND SAID LINER, MEANS ON SAID TUBING FOR ENGAGING SAID SEALING MEANS WHEN SAID TUBING IS MOVED UPWARDLY WITH RESPECT TO SAID LINER, MEANS DEFINING PASSAGEWAYS THROUGH THE SIDE OF SAID TUBING COMMUNICATING DIRECTLY WITH THE INTERIOR OF SAID LINER, MEANS MOUNTED ON SAID TUBING FOR CONFINING THE FLOW OF A FLUID FROM SAID PASSAGEWAYS TO A GIVEN LEVEL OF PERFORATIONS IN SAID LINER, MEANS FOR AFFIXING THE LOWER END OF SAID TUBING TO THE BOTTOM OF SAID LINER, AND MEANS AT THE BOTTOM OF SAID LINER FOR THE CONTROL OF FLUID FLOW THEREFROM WHEN SAID TUBING IS SECURED TO THE BOTTOM OF SAID LINER.
Claim 2
Dependent Claim
151 words
APPARATUS FOR USE IN A WELL COMPRISING TUBING, A PERFORATED LINER SURROUNDING SAID SLIDABLY MOUNTED ON SAID TUBING WHICH OPENS INTO SAID LINER, MEANS FOR OPENING AND CLOSING THE BASE OF SAID TUBING, SEALING MEANS AT THE UPPER END OF SAID LINER AND BETWEEN SAID TUBING AND SAID LINER, MEANS ON SAID TUBING FOR ENGAGING SAID SEALING MEANS WHEN SAID TUBING IS MOVED UPWARDLY WITH RESPECT TO SAID LINER, MEANS DEFINING PASSAGEWAYS THROUGH THE SIDE OF SAID TUBING COMMUNICATING DIRECTLY WITH THE INTERIOR OF SAID LINER, MEANS MOUNTED ON SAID TUBING FOR CONFINING THE FLOW OF A FLUID FROM SAID PASSAGEWAYS TO A GIVEN LEVEL OF PERFORATIONS IN SAID LINER, MEANS FOR AFFIXING THE LOWER END OF SAID TUBING TO THE BOTTOM OF SAID LINER, AND MEANS AT THE BOTTOM OF SAID LINER FOR THE CONTROL OF FLUID FLOW THEREFROM WHEN SAID TUBING IS SECURED TO THE BOTTOM OF SAID LINER.
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) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |