US3264986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Explosive well stimulation apparatus
Assignee: Petroleum Tool Research Inc
•
Filing: 1965-02-18
•
Granted: 1966-08-09
•
Expires: 1985-02-18
Abstract
No abstract record available.
Inventors
- 👤 Henry H Mohaupt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:19
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/25; E21B43/26; E21B43/263; F; F42; F42B; F42B3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
AN EXPLOSIVE WELL STIMULATING APPARATUS, INCLUDING: (A) A LONG, SLENDER EXPLOSIVE CHARGE; (B) SAID CHARGE HAVING A LENGTH-DIAMETER RATIO OF AT LEAST 3:1; (C) SAID CHARGE INCLUDING AN EXPLOSIVE OF THE PROPELLANT TYPE IN PARTICLE FORM CAPABLE OF BEING DISPERSED PRIOR TO COMPLETE COMBUSTION THEREOF; (D) MEANS FOR INITIATING COMBUSTION OF SAID EXPLOSIVE NONUNIFORMLY; (E) SAID CHARGE INCLUDING A CARRIER WHICH CONTAINS SAID EXPLOSIVE AND WHICH IS READILY FRANGIBLE UPON NONUNIFORM INITIATION OF COMBUTION OF SAID EXPLOSIVE TO DISPERSE SAID EXPLOSIVE PRIOR TO COMPLETE COMBUSTION THEREOF; AND (F) MEANS INCORPORATED IN SAID CARRIER FOR PREVENTING COLLAPSE OF SAID CHARGE BY EXTERNAL PRESSURE PRIOR TO INITIATING COMBUSTION OF SAID EXPLOSIVE.
Claim 2
Dependent Claim
109 words
AN EXPLOSIVE WELL STIMULATING APPARATUS, INCLUDING: (A) A LONG, SLENDER EXPLOSIVE CHARGE; (B) SAID CHARGE HAVING A LENGTH-DIAMETER RATIO OF AT LEAST 3:1; (C) SAID CHARGE INCLUDING AN EXPLOSIVE OF THE PROPELLANT TYPE IN PARTICLE FORM CAPABLE OF BEING DISPERSED PRIOR TO COMPLETE COMBUSTION THEREOF; (D) MEANS FOR INITIATING COMBUSTION OF SAID EXPLOSIVE NONUNIFORMLY; (E) SAID CHARGE INCLUDING A CARRIER WHICH CONTAINS SAID EXPLOSIVE AND WHICH IS READILY FRANGIBLE UPON NONUNIFORM INITIATION OF COMBUTION OF SAID EXPLOSIVE TO DISPERSE SAID EXPLOSIVE PRIOR TO COMPLETE COMBUSTION THEREOF; AND (F) MEANS INCORPORATED IN SAID CARRIER FOR PREVENTING COLLAPSE OF SAID CHARGE BY EXTERNAL PRESSURE PRIOR TO INITIATING COMBUSTION OF SAID EXPLOSIVE.
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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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |