Patent US3165156A successfully refreshed from Google Patents.
US3165156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Borehole apparatus
Assignee: Schlumberger Well Surveying Corp
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Filing: 1960-11-08
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Granted: 1965-01-12
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Expires: 1980-11-08
Abstract
No abstract record available.
Inventors
- 👤 Frank P Kokesh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:52
CPC Classifications
E; E21; E21B; E21B23/00; E21B23/14; E21B47/00; E21B47/01; E21B47/017
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
APPARATUS PARTICULARLY FOR USE IN AN OPEN WELL BORE HAVING IRREGULAR WALL SURFACES, OBSTRUCTIONS OR LEDGES, COMPRISING AN ELONGATED WELL TOOL HAVING A CENTRAL AXIS AND GUIDING MEANS AFFIXED TO THE LOWER END OF SAID WELL TOOL, SAID GUIDING MEANS COMPRISING A SHORT COUPLING MEMBER HAVING ONE END COUPLED TO SAID WELL TOOL AND A REMAINING END FOR RECEIVING A NOSE PIECE, AN ELONGATED TAPERED NOSE PIECE HAVING ONE END PORTION ATTACHED TO SAID REMAINING END OF SAID COUPLING MEANS AND THE REMAINING MAJOR PORTION OF SAID NOSE PIECE EXTENDING DOWNWARDLY A DISTANCE SUBSTANTIALLY GREATER THAN THE LENGTH OF SAID COUPLING MEMBER, SAID NOSE PIECE HAVING A CENTRAL AXIS IN LONGITUDINAL ALIGNMENT WITH THE CENTRAL AXIS OF SAID WELL TOOL, SAID NOSE PIECE CONSTRUCTED OF AN ELASTOMER MATERIAL OF SUFFICIENT FLEXIBILITY TO ALLOW SAID REMAINING PORTION OF SAID NOSE PIECE AND ITS AXIS TO BE BENT RELATIVE TO SAID CENTRAL AXIS OF SAID WELL TOOL AFTER CONTACT WITH
Claim 2
Dependent Claim
158 words
APPARATUS PARTICULARLY FOR USE IN AN OPEN WELL BORE HAVING IRREGULAR WALL SURFACES, OBSTRUCTIONS OR LEDGES, COMPRISING AN ELONGATED WELL TOOL HAVING A CENTRAL AXIS AND GUIDING MEANS AFFIXED TO THE LOWER END OF SAID WELL TOOL, SAID GUIDING MEANS COMPRISING A SHORT COUPLING MEMBER HAVING ONE END COUPLED TO SAID WELL TOOL AND A REMAINING END FOR RECEIVING A NOSE PIECE, AN ELONGATED TAPERED NOSE PIECE HAVING ONE END PORTION ATTACHED TO SAID REMAINING END OF SAID COUPLING MEANS AND THE REMAINING MAJOR PORTION OF SAID NOSE PIECE EXTENDING DOWNWARDLY A DISTANCE SUBSTANTIALLY GREATER THAN THE LENGTH OF SAID COUPLING MEMBER, SAID NOSE PIECE HAVING A CENTRAL AXIS IN LONGITUDINAL ALIGNMENT WITH THE CENTRAL AXIS OF SAID WELL TOOL, SAID NOSE PIECE CONSTRUCTED OF AN ELASTOMER MATERIAL OF SUFFICIENT FLEXIBILITY TO ALLOW SAID REMAINING PORTION OF SAID NOSE PIECE AND ITS AXIS TO BE BENT RELATIVE TO SAID CENTRAL AXIS OF SAID WELL TOOL AFTER CONTACT WITH
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-01-12 | 1968-07-13 | 1969-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-12 | 1972-07-13 | 1973-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-12 | 1976-07-13 | 1977-01-12 | $7700.00 | Window Closed / Lapsed |