US2796129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil recovery process
Assignee: N A HARDIN
•
Filing: 1951-08-13
•
Granted: 1957-06-18
•
Expires: 1971-08-13
Abstract
No abstract record available.
Inventors
- 👤 Clarence W Brandon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:56
CPC Classifications
E; E21; E21B; E21B21/00; E21B21/10; B; B01; B01J; B01J19/00; B01J19/08; B01J19/10; E21B43/00; E21B43/003; E21B43/02; E21B43/04; E21B43/25; E21B43/26; E21B43/2605; E21B7/00; E21B7/18; Y; Y10; Y10S; Y10S116/00; Y10S116/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A METHOD OF CUTTING AN OIL BEARING STRATA OF A SUBTERRANEAN FORMATION WHICH COMPRISES; PROVIDING A PLURALITY OF BORES EACH EXTENDING INTO THE STRATA, PROVIDING A TUNNEL IN THE STRATA CONNECTING A PAIR OF THE BORES, POSITIONING A CUTTING DEVICE IN SAID TUNNEL AND AGAINST THE FACE OF THE STRATA, APPLYING MOTION TO THE CUTTING DEVICE THROUGH SAID PAIR OF BORES TO PENETRATE THE FACE OF THE STRATA, APBEING CUT A FLUID INTO THE STRATA UNDER A PRESSURE IN EXCESS OF THE INTERNAL PRESSURE OF THE STRATA AND THEREBY INCREASE THE INTERNAL PRESSURE IN THAT PORTION OF THE STRATA TO WHICH THE CUTTING DEVICE IS APPLIED WHEREBY TO ASSIST THE CUTTING OF THE STRATA.
Claim 2
Independent Claim
114 words
A METHOD OF CUTTING AN OIL BEARING STRATA OF A SUBTERRANEAN FORMATION WHICH COMPRISES; PROVIDING A PLURALITY OF BORES EACH EXTENDING INTO THE STRATA, PROVIDING A TUNNEL IN THE STRATA CONNECTING A PAIR OF THE BORES, POSITIONING A CUTTING DEVICE IN SAID TUNNEL AND AGAINST THE FACE OF THE STRATA, APPLYING MOTION TO THE CUTTING DEVICE THROUGH SAID PAIR OF BORES TO PENETRATE THE FACE OF THE STRATA, APBEING CUT A FLUID INTO THE STRATA UNDER A PRESSURE IN EXCESS OF THE INTERNAL PRESSURE OF THE STRATA AND THEREBY INCREASE THE INTERNAL PRESSURE IN THAT PORTION OF THE STRATA TO WHICH THE CUTTING DEVICE IS APPLIED WHEREBY TO ASSIST THE CUTTING OF THE STRATA.
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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) | 1960-06-17 | 1960-12-17 | 1961-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-17 | 1964-12-17 | 1965-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-17 | 1968-12-17 | 1969-06-18 | $7700.00 | Window Closed / Lapsed |