Patent US3191144A successfully refreshed from Google Patents.
US3191144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stand off apparatus for logging tool
Assignee: Schlumberger Well Surveying Corp
•
Filing: 1961-08-08
•
Granted: 1965-06-22
•
Expires: 1981-08-08
Abstract
No abstract record available.
Inventors
- 👤 George H Pardue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:47
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/10; E21B47/00; E21B47/005; E21B47/02; E21B47/024; G; G01; G01V; G01V1/00; G01V1/40; G01V1/52; G01V1/523
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
120 words
A WELL TOOL FOR USE IN A CASED WELL BORE COMPRISING: AN ELONGATED, CYLINDRICALLY SHAPED HOUSING, SAID HOUSING BEING ADAPTED TO BE COUPLED AT ITS UPPER END TO A CABLE FOR MOVEMENT THROUGH THE WELL BORE, MAGNET MEANS IN SAID UPPER END OF SAID HOUSING FOR MAGNETICALLY ATTRACTING THE UPPER END OF SAID HOUSING TOWARDS A CASING, AND STAND OFF MEANS DISPOSED ALONG THE LENGTH OF AND ABOUT THE PERIPHERY OF SAID HOUSING WITH EXTREMITIES DISPOSED A UNIFORM DISTANCE OUTWARDLY FROM SAID HOUSING, SAID MAGNET MEANS BEING MAGNETICALLY COUPLED TO THE CASING WITH A FORCE SUFFICIENT IN CONJUNCTION WITH SAID STAND OFF MEANS TO MAINTAIN SAID HOUSING INCLUDING SAID MAGNET MEANS UNIFORMLY SPACED FROM SAID CASING BY SAID UNIFORM DISTANCE.
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) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |