Patent US2755862A successfully refreshed from Google Patents.
US2755862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gravel packing and wash tool
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1951-10-24
•
Granted: 1956-07-24
•
Expires: 1971-10-24
Abstract
No abstract record available.
Inventors
- 👤 Guss F Abendroth
- 👤 Gilbert H Tausch
- 👤 William T Ilfrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:37
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/04; E21B37/00; E21B37/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
APPARATUS FOR PACKING GRANULAR MATERIAL IN A BOREHOLE HAVING A PERFORATED CASING ARRANGED THEREIN WHICH COMPRISES, IN COMBINATION, A SCREEN AND LINER ADAPTED TO BE DIRECTLY CONNECTED TO A TUBING STRING, RELEASABLE COUPLING MEANS RELEASABLY SECURING THE SCREEN AND LINER TO THE TUBING STRING, A REMOVABLE INNER BARREL ARRANGED IN SAID SCREEN AND LINER AND SEALINGLY ENGAGING WITH SAID SCREEN AND LINER TO CLOSE OFF THE SCREEN PERFORATIONS AND REMOVABLE THROUGH SAID TUBING STRING TO OPEN SAID PERFORATIONS, A SELF-CLOSING VALVE MEANS ARRANGED IN SAID SCREEN AND LINER BELOW THE SCREEN PERFORATIONS AND BELOW SAID INNER BARREL FOR CLOSING THE BORE OF SAID SCREEN AND LINER, SAID VALVE MEANS BEING HELD OPEN BY SAID INNER BARREL AND SAID VALVE MEANS CLOSING ON REMOVAL OF SAID INNER BARREL, AND A BIT HEAD CARRYING A CUTTING HEAD DIRECTLY ATTACHED TO THE LOWER END OF SAID SCREEN AND LINER BELOW SAID VALVE MEANS FOR DRILLING OUT SAND ACCUMULATING IN THE CASING.
Claim 2
Dependent Claim
158 words
APPARATUS FOR PACKING GRANULAR MATERIAL IN A BOREHOLE HAVING A PERFORATED CASING ARRANGED THEREIN WHICH COMPRISES, IN COMBINATION, A SCREEN AND LINER ADAPTED TO BE DIRECTLY CONNECTED TO A TUBING STRING, RELEASABLE COUPLING MEANS RELEASABLY SECURING THE SCREEN AND LINER TO THE TUBING STRING, A REMOVABLE INNER BARREL ARRANGED IN SAID SCREEN AND LINER AND SEALINGLY ENGAGING WITH SAID SCREEN AND LINER TO CLOSE OFF THE SCREEN PERFORATIONS AND REMOVABLE THROUGH SAID TUBING STRING TO OPEN SAID PERFORATIONS, A SELF-CLOSING VALVE MEANS ARRANGED IN SAID SCREEN AND LINER BELOW THE SCREEN PERFORATIONS AND BELOW SAID INNER BARREL FOR CLOSING THE BORE OF SAID SCREEN AND LINER, SAID VALVE MEANS BEING HELD OPEN BY SAID INNER BARREL AND SAID VALVE MEANS CLOSING ON REMOVAL OF SAID INNER BARREL, AND A BIT HEAD CARRYING A CUTTING HEAD DIRECTLY ATTACHED TO THE LOWER END OF SAID SCREEN AND LINER BELOW SAID VALVE MEANS FOR DRILLING OUT SAND ACCUMULATING IN THE CASING.
References Cited (Backward Citations)
US1612168A
Cited
US1854518A
Cited
US2213987A
Cited
US2229493A
Cited
US2327092A
Cited
US2344120A
Cited
US2374922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-24 | 1960-01-23 | 1960-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-24 | 1964-01-23 | 1964-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-24 | 1968-01-23 | 1968-07-24 | $7700.00 | Window Closed / Lapsed |