US3244101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perforating apparatus
Assignee: Schlumberger Well Surveying Corp
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Filing: 1964-06-11
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Granted: 1966-04-05
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Expires: 1984-06-11
Abstract
No abstract record available.
Inventors
- 👤 William T Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:54
CPC Classifications
C; C06; C06C; C06C7/00; E; E21; E21B; E21B23/00; E21B23/01; E21B43/00; E21B43/11; E21B43/116; E21B43/117
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
SHAPED CHARGED APPARATUS FOR USE IN A WELL BORE COMPRISING: A SHAPED CHARGED MEANS ADAPTED WHEN OPERATED TO PRODUCE A PERFORATING JET, AND CAPSULE MEANS ENCLOSING SAID CHARGE MEANS AND HAVING A FORWARD PORTION WITH A CURVATURE SUBSTANTIALLY THE SAME AS THE CURVATURE OF A CASING, SAID CAPSULE MEANS HAVING A METAL BARRIER DISPOSED ADJACENT TO SAID CHARGE MEANS WITH A BLIND BORE TERMINATING AT A THIN-WALLED SECTION, SAID BORE HAVING A DIAMETER JUST GREATER THAN THE DIAMETER OF THE EFFECTIVE PENETRATING PORTION OF A PERFORATING JET AND HAVING A LENGTH GREATER THAN THE EFFECTIVE LENGTH OF ECCENTRIC DISTORTION IN THE NON-EFFECTIVE PENETRATING PORTION OF A PERFORATING JET, AND MEANS FOR PLACING SAID FORWARD CURVED PORTION INTO CONTACT WITH A CASING.
Claim 2
Dependent Claim
121 words
SHAPED CHARGED APPARATUS FOR USE IN A WELL BORE COMPRISING: A SHAPED CHARGED MEANS ADAPTED WHEN OPERATED TO PRODUCE A PERFORATING JET, AND CAPSULE MEANS ENCLOSING SAID CHARGE MEANS AND HAVING A FORWARD PORTION WITH A CURVATURE SUBSTANTIALLY THE SAME AS THE CURVATURE OF A CASING, SAID CAPSULE MEANS HAVING A METAL BARRIER DISPOSED ADJACENT TO SAID CHARGE MEANS WITH A BLIND BORE TERMINATING AT A THIN-WALLED SECTION, SAID BORE HAVING A DIAMETER JUST GREATER THAN THE DIAMETER OF THE EFFECTIVE PENETRATING PORTION OF A PERFORATING JET AND HAVING A LENGTH GREATER THAN THE EFFECTIVE LENGTH OF ECCENTRIC DISTORTION IN THE NON-EFFECTIVE PENETRATING PORTION OF A PERFORATING JET, AND MEANS FOR PLACING SAID FORWARD CURVED PORTION INTO CONTACT WITH A CASING.
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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |