Patent US3312282A successfully refreshed from Google Patents.
US3312282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pumping well tools through flowlines of irregular diameter
Assignee: Shell USA Inc
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Filing: 1964-01-30
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Granted: 1967-04-04
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Expires: 1984-01-30
Abstract
No abstract record available.
Inventors
- 👤 Edward D Yetman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:27
CPC Classifications
E; E21; E21B; E21B23/00; E21B23/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
FOR USE IN SERVICING UNDERWATER OIL AND GAS WELLS AN APPARATUS ADAPTED TO BE PUMPED THROUGH A FLOWLINE HAVING A MAJOR PORTION THEREOF OF A GIVEN DIAMETER AND HAVING AT LEAST ONE PORTION OF ENLARGED DIAMETER, SAID APPARATUS COMPRISING: (A) A FIRST TOOL CARRIER; (B) A SECOND TOOL CARRIER AXIALLY SPACED FROM SAID FIRST TOOL CARRIER; (C) SEALING MEANS CIRCUMFERENTIALLY MOUNTED ON EACH OF SAID TOOL CARRIERS FOR SLIDING ENGAGEMENT WITH THE INTERNAL WALLS OF THE MAJOR PORTION OF THE FLOWLINE; AND,
Claim 2
Dependent Claim
82 words
FOR USE IN SERVICING UNDERWATER OIL AND GAS WELLS AN APPARATUS ADAPTED TO BE PUMPED THROUGH A FLOWLINE HAVING A MAJOR PORTION THEREOF OF A GIVEN DIAMETER AND HAVING AT LEAST ONE PORTION OF ENLARGED DIAMETER, SAID APPARATUS COMPRISING: (A) A FIRST TOOL CARRIER; (B) A SECOND TOOL CARRIER AXIALLY SPACED FROM SAID FIRST TOOL CARRIER; (C) SEALING MEANS CIRCUMFERENTIALLY MOUNTED ON EACH OF SAID TOOL CARRIERS FOR SLIDING ENGAGEMENT WITH THE INTERNAL WALLS OF THE MAJOR PORTION OF THE FLOWLINE; AND,
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) | 1970-04-03 | 1970-10-03 | 1971-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-03 | 1974-10-03 | 1975-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-03 | 1978-10-03 | 1979-04-04 | $7700.00 | Window Closed / Lapsed |