Patent US3273645A successfully refreshed from Google Patents.
US3273645A
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Well completion apparatus
Assignee: Schlumberger Well Surveying Corp
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Filing: 1962-07-23
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Granted: 1966-09-20
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Expires: 1982-07-23
Abstract
No abstract record available.
Inventors
- 👤 Mott Raymond W Der
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:16
CPC Classifications
E; E21; E21B; E21B23/00; E21B23/04; E21B23/0411; E21B23/0419; E21B23/042; E21B43/00; E21B43/11; E21B43/119
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
106 words
WELL PERFORATING APPARATUS ADAPTED FOR SUSPENSION BY ELECTRIC CABLE IN A WELL BORE HAVING AT LEAST ONE STRING OF PIPE THEREIN COMPRISING: PERFORATING MEANS HAVING A PRESCRIBED DIRECTION OF LATERAL FIRING, SELECTIVELY OPERABLE ANCHOR MEANS FOR SELECTIVELY ENGAGING THE WALL OF A STRING OF PIPE INCLUDING WALL-ENGAGING MEMBERS MOVABLE LATERALLY BETWEEN NON-ENGAGING AND WALL-ENGAGING POSITIONS, RATATOR MEANS INTERMEDIATE SAID ANCHOR MEANS AND SAID PERFORATING MEANS OPERATIVE FOR ROTATING SAID PERFORATING MEANS RELATIVE TO SAID ANCHOR MEANS WHEN SAID WALL-ENGAGING MEMBERS ARE IN SAID WALL-EN GAGING POSITION, AND POSITION RESPONSIVE MEANS CONNECTED TO SAID WALL-ENGAGING MEMBERS FOR PROVIDING ELECTRICAL SIGNALS OF THE POSITION OF SAID WALL-ENGAGING MEMBERS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |