US3382938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill collar
Assignee: Individual
•
Filing: 1966-10-03
•
Granted: 1968-05-14
•
Expires: 1986-10-03
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward B Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:34
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A DRILL COLLAR FOR MINIMIZING DEVIATION OF A BOREHOLE BEING DRILLED BY A DRILL BIT OF A DRILLING STRING WHICH INCLUDES A COLUMN OF DRILL PIPE UNDER ROTATION IN THE BOREHOLE, SAID DRILL COLLAR COMPRISING A DRILL PIPE HAVING ENDS FOR CONNECTION INTO THE DRILLING STRING BETWEEN THE DRILL BIT AND THE COLUMN OF DRILL PIPE TO PROVIDE A STEM FOR THE DRILL BIT, SAID DRILL COLLAR HAVING A CURVATURE EXTENDING LONGITUDINALLY THEREOF TO PROVIDE A CONVEX SIDE IN THE DIRECTION OF A WALL OF THE BOREHOLE AND ASSURE THAT ANY BEND OF THE DRILL COLLAR UNDER WEIGHT OF THE COLUMN OF DRILL PIPE TAKES PLACE IN THE DIRECTION OF CURVATURE, AND PADS ON THE CONVEX SIDE OF THE DRILL COLLAR AND HAVING VIRTUALLY ALIGNING FACES FOR WIPING CONTACT WITH THE WALL OF THE BOREHOLE TO PROVIDE SUPPORT OF THE DRILL COLLAR SUBSTANTIALLY ALONG THE FULL LENGTH THEREOF UNDER WEIGHT OF SAID COLUMN OF DRILL PIPE AND TO MINIMIZE BENDING THAT PRODUCES DEVIATION OF THE DRILL BIT.
Claim 2
Dependent Claim
167 words
A DRILL COLLAR FOR MINIMIZING DEVIATION OF A BOREHOLE BEING DRILLED BY A DRILL BIT OF A DRILLING STRING WHICH INCLUDES A COLUMN OF DRILL PIPE UNDER ROTATION IN THE BOREHOLE, SAID DRILL COLLAR COMPRISING A DRILL PIPE HAVING ENDS FOR CONNECTION INTO THE DRILLING STRING BETWEEN THE DRILL BIT AND THE COLUMN OF DRILL PIPE TO PROVIDE A STEM FOR THE DRILL BIT, SAID DRILL COLLAR HAVING A CURVATURE EXTENDING LONGITUDINALLY THEREOF TO PROVIDE A CONVEX SIDE IN THE DIRECTION OF A WALL OF THE BOREHOLE AND ASSURE THAT ANY BEND OF THE DRILL COLLAR UNDER WEIGHT OF THE COLUMN OF DRILL PIPE TAKES PLACE IN THE DIRECTION OF CURVATURE, AND PADS ON THE CONVEX SIDE OF THE DRILL COLLAR AND HAVING VIRTUALLY ALIGNING FACES FOR WIPING CONTACT WITH THE WALL OF THE BOREHOLE TO PROVIDE SUPPORT OF THE DRILL COLLAR SUBSTANTIALLY ALONG THE FULL LENGTH THEREOF UNDER WEIGHT OF SAID COLUMN OF DRILL PIPE AND TO MINIMIZE BENDING THAT PRODUCES DEVIATION OF THE DRILL BIT.
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) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |