Patent US3334907A successfully refreshed from Google Patents.
US3334907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packing structure for subsurface well apparatus
Assignee: Baker Hughes Oilfield Operations LLC
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Filing: 1964-08-24
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Granted: 1967-08-08
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Expires: 1984-08-24
Abstract
No abstract record available.
Inventors
- 👤 Gary R Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:49
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/128
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
IN A WELL TOOL ADAPTED TO BE DISPOSED IN A WELL BORE; A BODY; A NORMALLY RETRACTED ANNULAR PLIANT ELASTIC PACKING MEMBER ON SAID BODY; UPPER AND LOWER ABUTMENTS ON SAID BODY ENGAGING UPER AND LOWER PORTIONS OF SAID PACKING MEMBER, RESPECTIVELY, AND MOVABLE TOWARD EACH OTHER TO SHORTEN AND EXPAND SAID PACKING MEMBER LATERNALLY OUTWARDLY; SAID UPPER AND LOWER ABUTMENTS BEING DISCONNECTED FROM SAID PACKING MEMBER; MEANS PROVIDING A DIRECT SEAL BETWEEN SAID BODY AND SAID PACKING MEMBER AT ONE END PORTION THEREOF; MEANS PROVIDING A PASSAGE ESTABLISHING FLUID COMMUNICATION BETWEEN THE INTERIOR OF SAID PACKING MEMBER AND ITS EXTERIRO AT ITS OTHER END PORTION; AND MEANS FOR CAUSING FLUID FLOWING PAST THE EXTERIOR OF SAID PACKING MEMBER AND SAID PASSAGE TO PRODUCE A LESSER STATIC PRESURE IN SAID PASSAGE AND INTERIOR OF SAID PACKING MEMBER THAN THE STATIC PRESSURE EXTERNALLY OF SAID PACKING MEMBER.
Claim 2
Dependent Claim
146 words
IN A WELL TOOL ADAPTED TO BE DISPOSED IN A WELL BORE; A BODY; A NORMALLY RETRACTED ANNULAR PLIANT ELASTIC PACKING MEMBER ON SAID BODY; UPPER AND LOWER ABUTMENTS ON SAID BODY ENGAGING UPER AND LOWER PORTIONS OF SAID PACKING MEMBER, RESPECTIVELY, AND MOVABLE TOWARD EACH OTHER TO SHORTEN AND EXPAND SAID PACKING MEMBER LATERNALLY OUTWARDLY; SAID UPPER AND LOWER ABUTMENTS BEING DISCONNECTED FROM SAID PACKING MEMBER; MEANS PROVIDING A DIRECT SEAL BETWEEN SAID BODY AND SAID PACKING MEMBER AT ONE END PORTION THEREOF; MEANS PROVIDING A PASSAGE ESTABLISHING FLUID COMMUNICATION BETWEEN THE INTERIOR OF SAID PACKING MEMBER AND ITS EXTERIRO AT ITS OTHER END PORTION; AND MEANS FOR CAUSING FLUID FLOWING PAST THE EXTERIOR OF SAID PACKING MEMBER AND SAID PASSAGE TO PRODUCE A LESSER STATIC PRESURE IN SAID PASSAGE AND INTERIOR OF SAID PACKING MEMBER THAN THE STATIC PRESSURE EXTERNALLY OF SAID PACKING MEMBER.
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) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |