US2798560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for obtaining fluid flow from wells
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1954-06-30
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Granted: 1957-07-09
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Expires: 1974-06-30
Abstract
No abstract record available.
Inventors
- 👤 Thomas O Allen
- 👤 Gilbert H Tausch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:58
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/124; E21B33/1243
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
APPARATUS FOR OBTAINING FLUID FLOW FROM AN EARTH STRATUM PENETRATED BY A CASED AND TUBED WELL IN WHICH THE TUBING IS PERMANENTLY LOCATED WITH ITS LOWER OPEN END AT A LEVEL A SUBSTANTIAL DISTANCE ABOVE THE EARTH STRATUM FROM WHICH FLUID FLOW IS OBTAINED WHICH COMPRISES, IN COMBINATION, AN ELONGATED TUBULAR MEMBER OPEN AT BOTH ENDS HAVING VERTICALLY SPACED APART FIRST AND SECOND PORTS INTERMEDIATE THE ENDS OF SAID TUBULAR MEMBER ADAPTED TO BE LOWERED THROUGH THE TUBING AND TO BE SUPPORTED IN THE LOWER END OF THE TUBING TO INCREASE THE EFFECTIVE LENGTH OF THE TUBING TO SAID EARTH STRATUM, SUPPORTING MEANS ON THE UPPER END OF SAID TUBULAR MEMBER,
Claim 2
Dependent Claim
111 words
APPARATUS FOR OBTAINING FLUID FLOW FROM AN EARTH STRATUM PENETRATED BY A CASED AND TUBED WELL IN WHICH THE TUBING IS PERMANENTLY LOCATED WITH ITS LOWER OPEN END AT A LEVEL A SUBSTANTIAL DISTANCE ABOVE THE EARTH STRATUM FROM WHICH FLUID FLOW IS OBTAINED WHICH COMPRISES, IN COMBINATION, AN ELONGATED TUBULAR MEMBER OPEN AT BOTH ENDS HAVING VERTICALLY SPACED APART FIRST AND SECOND PORTS INTERMEDIATE THE ENDS OF SAID TUBULAR MEMBER ADAPTED TO BE LOWERED THROUGH THE TUBING AND TO BE SUPPORTED IN THE LOWER END OF THE TUBING TO INCREASE THE EFFECTIVE LENGTH OF THE TUBING TO SAID EARTH STRATUM, SUPPORTING MEANS ON THE UPPER END OF SAID TUBULAR MEMBER,
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) | 1960-07-08 | 1961-01-07 | 1961-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-08 | 1965-01-07 | 1965-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-08 | 1969-01-07 | 1969-07-09 | $7700.00 | Window Closed / Lapsed |