US3280920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable apparatus for drilling slim hole wells
Assignee: Hycalog Inc
•
Filing: 1964-03-18
•
Granted: 1966-10-25
•
Expires: 1984-03-18
Abstract
No abstract record available.
Inventors
- 👤 Scott Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:52
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/14; E21B19/15; E21B19/155; E21B7/00; E21B7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
AN APPARATUS FOR DRILLING WELLS COMPRISING IN COMBINATION A MAST; MEANS FOR SUPPORTING A STRING OF DRILL PIPE ROTATABLY IN THE MAST; MEANS FOR RAISING AND LOWER ING THE SUPPORTING MEANS IN RECTILINEAR DIRECTION CARRIED BY THE MAST; AND MEANS FOR ADDING AND WITHDRAWING SECTIONS OF PIPE TO AND FROM SAID STRING OF DRILL PIPE, INCLUDING AN ELONGATE FRAME PIVOTED ADJACENT THE LOWER END OF THE MAST FOR SWINGING MOVEMENT WITH RESPECT TO THE MAST BETWEEN A SUBSTANTIALLY HORIZONTAL POSITION AND AN UPRIGHT POSITION WITH THE UPPER END OF THE FRAME NEAR THE SUPPORTING MEANS, AND RELEASEABLE CLAMPS ADAPTED TO GRIP A SECTION OF DRILL PIPE, MEANS MOUNTING THE CLAMPS ON THE FRAME FOR LIMITED RECIPROCATING MOVEMENT LONGTUDINALLY OF THE FRAME AND IN POSTION TO HOLD A SECTION OF DRILL PIPE UPRIGHT DIRECTLY BENEATH SAID SUPPORTING MEANS WHEN THE FRAME IS IN SAID UPRIGHT POSITION.
Claim 2
Independent Claim
145 words
AN APPARATUS FOR DRILLING WELLS COMPRISING IN COMBINATION A MAST; MEANS FOR SUPPORTING A STRING OF DRILL PIPE ROTATABLY IN THE MAST; MEANS FOR RAISING AND LOWER ING THE SUPPORTING MEANS IN RECTILINEAR DIRECTION CARRIED BY THE MAST; AND MEANS FOR ADDING AND WITHDRAWING SECTIONS OF PIPE TO AND FROM SAID STRING OF DRILL PIPE, INCLUDING AN ELONGATE FRAME PIVOTED ADJACENT THE LOWER END OF THE MAST FOR SWINGING MOVEMENT WITH RESPECT TO THE MAST BETWEEN A SUBSTANTIALLY HORIZONTAL POSITION AND AN UPRIGHT POSITION WITH THE UPPER END OF THE FRAME NEAR THE SUPPORTING MEANS, AND RELEASEABLE CLAMPS ADAPTED TO GRIP A SECTION OF DRILL PIPE, MEANS MOUNTING THE CLAMPS ON THE FRAME FOR LIMITED RECIPROCATING MOVEMENT LONGTUDINALLY OF THE FRAME AND IN POSTION TO HOLD A SECTION OF DRILL PIPE UPRIGHT DIRECTLY BENEATH SAID SUPPORTING MEANS WHEN THE FRAME IS IN SAID UPRIGHT POSITION.
References Cited (Backward Citations)
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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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |