US2749840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gun perforators for wells
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1950-09-11
•
Granted: 1956-06-12
•
Expires: 1970-09-11
Abstract
No abstract record available.
Inventors
- 👤 Babcock Earl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:41
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/08; E; E21; E21B; E21B43/00; E21B43/11; E21B43/116; E21B43/117; F42D; F42D5/00; F42D5/04; F42D5/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN A GUN FOR PERFORATING CASING IN OIL WELLS OR THE LIKE, IN COMBINATION, A FLEXIBLE ELONGATED CARRIAGE SMALL ENOUGH IN DIAMETER TO BE RUN INTO THE WELL THROUGH TUBING INSIDE THE CASING TO BE PERFORATED, SAID CARRIAGE INCLUDING A FLEXIBLE OUTER TUBULAR CONTAINER, A PLURALITY OF SHAPED CHARGES OF EXPLOSIVE TRANSVERSELY MOUNTED IN SPACED RELATION IN SAID CONTAINER, A PRESSURE RESISTANT ENVELOPE ENCLOSING AND SEALING EACH SHAPED CHARGE AND A BODY OF UNCONSOLIDATED FILLING MATERIAL COMPOSED OF SOLID GRANULES IN THE CONTAINER AROUND THE SHAPED CHARGES, SAID OUTER TUBULAR CONTAINER BEING DESIGNED TO BE SUBSTANTIALLY DESTROYED BY THE EXPLOSION OF SAID SHAPED CHARGES.
Claim 2
Dependent Claim
104 words
IN A GUN FOR PERFORATING CASING IN OIL WELLS OR THE LIKE, IN COMBINATION, A FLEXIBLE ELONGATED CARRIAGE SMALL ENOUGH IN DIAMETER TO BE RUN INTO THE WELL THROUGH TUBING INSIDE THE CASING TO BE PERFORATED, SAID CARRIAGE INCLUDING A FLEXIBLE OUTER TUBULAR CONTAINER, A PLURALITY OF SHAPED CHARGES OF EXPLOSIVE TRANSVERSELY MOUNTED IN SPACED RELATION IN SAID CONTAINER, A PRESSURE RESISTANT ENVELOPE ENCLOSING AND SEALING EACH SHAPED CHARGE AND A BODY OF UNCONSOLIDATED FILLING MATERIAL COMPOSED OF SOLID GRANULES IN THE CONTAINER AROUND THE SHAPED CHARGES, SAID OUTER TUBULAR CONTAINER BEING DESIGNED TO BE SUBSTANTIALLY DESTROYED BY THE EXPLOSION OF SAID SHAPED CHARGES.
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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) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |