US3339637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well packers
Assignee: Halliburton Co
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Filing: 1965-10-14
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Granted: 1967-09-05
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Expires: 1985-10-14
Abstract
No abstract record available.
Inventors
- 👤 John C Holden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:11
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1295; E21B33/12955; E21B33/1291; E21B33/1294
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
191 words
PACKER APPARATUS COMPRISING: (A) A FIRST MANDREL; (B) A PACKER MANDREL MOUNTED IN TELESCOPING RELATION OVER SAID FIRST MANDREL, SAID PACKER MANDREL BEING MOVABLE LONGITUDINALLY RELATIVE TO SAID FIRST MANDREL; (C) A DEFORMABLE PACKER ELEMENT, SAID ELEMENT BEING IN THE FORM OF A RING AND BEING MOUNTED ON THE EXTERIOR OF SAID PACKER MANDREL; (D) MEANS FORMING SHOES AT OPPOSITE ENDS OF SAID PACKER ELEMENT, SAID PACKER MANDREL HAVING A FLANGE ENGAGING SAID PACKER ELEMENT, PISTON MEANS ON OPPOSITE ENDS OF SAID PACKER MANDREL, ONE OF SAID PISTON MEANS BEING EXPOSED TO FLUID PRESSURE AT ONE END OF SAID PACKER ELEMENT AND THE OTHER OF SAID PISTON MEANS BEING EXPOSED TO FLUID PRESSURE AT THE OPPOSITE END OF SAID PACKER ELEMENT; (E) MEANS FOR SELECTIVELY ANCHORING ONE OF SAID SHOE FORMING MEANS AGAINST A CASING UPON AXIAL MOVEMENT OF SAID FIRST MANDREL, AND MEANS FOR MOVING THE OTHER OF SAID SHOE FORMING MEANS TOWARD SAID ONE SHOE FORMING MEANS TO EXPAND SAID PACKER ELEMENT; (F) SAID PACKER ELEMENT INCLUDING A PLURALITY OF SUBELEMENTS, ONE OF SAID SUB-ELEMENTS BEING SUBSTANTIALLY SOFTER THAN OTHER SUB-ELEMENTS, WHEREBY AN EFFECTIVE CASING SEAL MAY BE FORMED.
Claim 2
Dependent Claim
191 words
PACKER APPARATUS COMPRISING: (A) A FIRST MANDREL; (B) A PACKER MANDREL MOUNTED IN TELESCOPING RELATION OVER SAID FIRST MANDREL, SAID PACKER MANDREL BEING MOVABLE LONGITUDINALLY RELATIVE TO SAID FIRST MANDREL; (C) A DEFORMABLE PACKER ELEMENT, SAID ELEMENT BEING IN THE FORM OF A RING AND BEING MOUNTED ON THE EXTERIOR OF SAID PACKER MANDREL; (D) MEANS FORMING SHOES AT OPPOSITE ENDS OF SAID PACKER ELEMENT, SAID PACKER MANDREL HAVING A FLANGE ENGAGING SAID PACKER ELEMENT, PISTON MEANS ON OPPOSITE ENDS OF SAID PACKER MANDREL, ONE OF SAID PISTON MEANS BEING EXPOSED TO FLUID PRESSURE AT ONE END OF SAID PACKER ELEMENT AND THE OTHER OF SAID PISTON MEANS BEING EXPOSED TO FLUID PRESSURE AT THE OPPOSITE END OF SAID PACKER ELEMENT; (E) MEANS FOR SELECTIVELY ANCHORING ONE OF SAID SHOE FORMING MEANS AGAINST A CASING UPON AXIAL MOVEMENT OF SAID FIRST MANDREL, AND MEANS FOR MOVING THE OTHER OF SAID SHOE FORMING MEANS TOWARD SAID ONE SHOE FORMING MEANS TO EXPAND SAID PACKER ELEMENT; (F) SAID PACKER ELEMENT INCLUDING A PLURALITY OF SUBELEMENTS, ONE OF SAID SUB-ELEMENTS BEING SUBSTANTIALLY SOFTER THAN OTHER SUB-ELEMENTS, WHEREBY AN EFFECTIVE CASING SEAL MAY BE FORMED.
References Cited (Backward Citations)
US3211227A
Cited
US3223169A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |