US3256437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature well packer apparatus
Assignee: Baker Hughes Oilfield Operations LLC
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Filing: 1963-03-11
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Granted: 1966-06-14
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Expires: 1983-03-11
Abstract
No abstract record available.
Inventors
- 👤 John F Muse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:26
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1291
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN A WELL PACKER ADAPTED TO BE SET IN A CONDUIT DISPOSED IN A WELL BORE: A BODY; SLIP INSTRUMENTALITIES ON SAID BODY; AN EXPANDER ENGAGEABLE WITH SAID SLIP INSTRUMENTALITIES TO EXPAND SAID SLIP INSTRUMENTALITIES AGAINST THE CONDUIT; AN INITIALLY RETRACTED PACKING STRUCTURE ON SAID BODY HAVING ONE END PORTING ENGAGING SAID EXPANDER; ABUTMENT MEANS ON SAID BODY ENGAGING THE OTHER END PORTION OF SAID PACKING STRUCTURE; AND MEANS INTERCONNECTING SAID BODY AND EXPANDER WHEREBY ROTATION OF SAID BODY WITHIN SAID EXPANDER SHIFTS SAID BODY LONGITUDINALLY OF SAID EXPANDER TO SHIFT ABUTMENT MEANS TOWARD SAID EXPANDER TO EXPAND SAID PACKING STRUCTURE AGAINST THE CONDUIT.
Claim 2
Dependent Claim
104 words
IN A WELL PACKER ADAPTED TO BE SET IN A CONDUIT DISPOSED IN A WELL BORE: A BODY; SLIP INSTRUMENTALITIES ON SAID BODY; AN EXPANDER ENGAGEABLE WITH SAID SLIP INSTRUMENTALITIES TO EXPAND SAID SLIP INSTRUMENTALITIES AGAINST THE CONDUIT; AN INITIALLY RETRACTED PACKING STRUCTURE ON SAID BODY HAVING ONE END PORTING ENGAGING SAID EXPANDER; ABUTMENT MEANS ON SAID BODY ENGAGING THE OTHER END PORTION OF SAID PACKING STRUCTURE; AND MEANS INTERCONNECTING SAID BODY AND EXPANDER WHEREBY ROTATION OF SAID BODY WITHIN SAID EXPANDER SHIFTS SAID BODY LONGITUDINALLY OF SAID EXPANDER TO SHIFT ABUTMENT MEANS TOWARD SAID EXPANDER TO EXPAND SAID PACKING STRUCTURE AGAINST THE CONDUIT.
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) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |