Patent US3237559A successfully refreshed from Google Patents.
US3237559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Caseless shaped charges for oilproducing boreholes
Assignee: Services Petroliers Schlumberger SA
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Filing: 1963-12-09
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Granted: 1966-03-01
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Expires: 1983-12-09
Abstract
No abstract record available.
Inventors
- 👤 Auberlinder Gerard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:56
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/08; E; E21; E21B; E21B43/00; E21B43/11; E21B43/116; E21B43/117; F42B1/00; F42B1/02; F42B1/032
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A SHAPED CHARGE FOR PERFORATING EARTH FORMATIONS TRAVERSED BY A WELL BORE HAVING FLUIDS THEREIN AND CONSISTING OF: A COMPRESSED BODY OF A FLUID-IMPREVIOUS SECONDARY EXPLOSIVE UNIFORMLY DISPOSED ABOUT A CENTRAL AXIS AND HAVING INTEGRAL EXTENSIONS OF SAID EXPLOSIVE PROJECTING LATERALLY THEREFROM ADAPTED FOR CONNECTION TO A SUPPORT AND GENERALLY FRUSTO-CONCIAL RECESS IN ONE END THEREOF DIVERGING OUTWARDLY FROM THE CENTRAL AXIS OF SAID COMPRESSED BODY, AND A COMPLEMENTARY, HOLLOWED THIN-WALLED LINER ELEMENT RECEIVED WITHIN SAID RECESS AND ADAPTED TO DEVELOP A PERFORATING JET ALONG SAID CENTRAL AXIS.
Claim 2
Dependent Claim
88 words
A SHAPED CHARGE FOR PERFORATING EARTH FORMATIONS TRAVERSED BY A WELL BORE HAVING FLUIDS THEREIN AND CONSISTING OF: A COMPRESSED BODY OF A FLUID-IMPREVIOUS SECONDARY EXPLOSIVE UNIFORMLY DISPOSED ABOUT A CENTRAL AXIS AND HAVING INTEGRAL EXTENSIONS OF SAID EXPLOSIVE PROJECTING LATERALLY THEREFROM ADAPTED FOR CONNECTION TO A SUPPORT AND GENERALLY FRUSTO-CONCIAL RECESS IN ONE END THEREOF DIVERGING OUTWARDLY FROM THE CENTRAL AXIS OF SAID COMPRESSED BODY, AND A COMPLEMENTARY, HOLLOWED THIN-WALLED LINER ELEMENT RECEIVED WITHIN SAID RECESS AND ADAPTED TO DEVELOP A PERFORATING JET ALONG SAID CENTRAL AXIS.
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |