US3331440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well packer
Assignee: Baker Hughes Holdings LLC
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Filing: 1965-04-16
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Granted: 1967-07-18
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Expires: 1985-04-16
Abstract
No abstract record available.
Inventors
- 👤 Chudleigh B Cochran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:34
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1295
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
184 words
A WELL PACKER FOR USE IN A WELL PIPE COMPRISING, A TUBULAR SUPPORT, AN UPPER SEAL ASSEMBLY MOUNTED SURROUNDING THE UPPER PORTION OF SAID TUBULAR SUPPORT, A LOWER SEAL ASSEMBLY MOUNTED SURROUNDING SAID TUBULAR SUPPORT BELOW SAID UPPER SEAL ASSEMBLY, AN ANCHOR ASSEMBLY MOUNTED SURROUNDING SAID TUBULAR SUPPORT BETWEEN SAID UPPER AND LOWER SEAL ASSEMBLIES, PRESSURE-RESPONSIVE MEANS MOUNTED ON SAID TUBULAR SUPPORT AND CONNECTED TO ACTUATE SAID LOWER SEAL ASSEMBLY, SAID SEAL ASSEMBLIES AND SAID ANCHOR ASSEMBLY BEING MOVABLE IN A TELESCOPING MANNER TO SET SEAL ASSEMBLIES AND SAID ANCHOR ASSEMBLY, LATCH MEANS HOLDING SAID ASSEMBLIES IN EXTENDED UNSET POSITION IN RELATION TO SAID TUBULAR SUPPORT WHEREBY SAID WELL PACKER MAY BE RUN TO A DESIRE POSITION IN A WELL PIPE, AND RELEASE MEANS FOR RELEASING SAID LATCH MEANS PREPARATORY TO THE SETTING OF SAID ASSEMBLIES, SAID RELEASE MEANS BEING ACTUATED RESPONSIVE TO A LIFTING OF THE TUBULAR SUPPORT AND THEREAFTER A LOWERING OF SAID TUBULAR SUPPORT TO RELEASE SAID LATCH MEANS AND SUPPORT SAID ASSEMBLIES WHEREBY SAID ANCHOR ASSEMBLY AND SAID UPPER SEAL ASSEMBLY ARE SET BY THE LOWERING OF SAID TUBULAR SUPPORT,
Claim 2
Dependent Claim
184 words
A WELL PACKER FOR USE IN A WELL PIPE COMPRISING, A TUBULAR SUPPORT, AN UPPER SEAL ASSEMBLY MOUNTED SURROUNDING THE UPPER PORTION OF SAID TUBULAR SUPPORT, A LOWER SEAL ASSEMBLY MOUNTED SURROUNDING SAID TUBULAR SUPPORT BELOW SAID UPPER SEAL ASSEMBLY, AN ANCHOR ASSEMBLY MOUNTED SURROUNDING SAID TUBULAR SUPPORT BETWEEN SAID UPPER AND LOWER SEAL ASSEMBLIES, PRESSURE-RESPONSIVE MEANS MOUNTED ON SAID TUBULAR SUPPORT AND CONNECTED TO ACTUATE SAID LOWER SEAL ASSEMBLY, SAID SEAL ASSEMBLIES AND SAID ANCHOR ASSEMBLY BEING MOVABLE IN A TELESCOPING MANNER TO SET SEAL ASSEMBLIES AND SAID ANCHOR ASSEMBLY, LATCH MEANS HOLDING SAID ASSEMBLIES IN EXTENDED UNSET POSITION IN RELATION TO SAID TUBULAR SUPPORT WHEREBY SAID WELL PACKER MAY BE RUN TO A DESIRE POSITION IN A WELL PIPE, AND RELEASE MEANS FOR RELEASING SAID LATCH MEANS PREPARATORY TO THE SETTING OF SAID ASSEMBLIES, SAID RELEASE MEANS BEING ACTUATED RESPONSIVE TO A LIFTING OF THE TUBULAR SUPPORT AND THEREAFTER A LOWERING OF SAID TUBULAR SUPPORT TO RELEASE SAID LATCH MEANS AND SUPPORT SAID ASSEMBLIES WHEREBY SAID ANCHOR ASSEMBLY AND SAID UPPER SEAL ASSEMBLY ARE SET BY THE LOWERING OF SAID TUBULAR SUPPORT,
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) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |