US3151679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fracturing an earth formation with a frangible implodable device
Assignee: Dow Chemical Co
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Filing: 1960-01-20
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Granted: 1964-10-06
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Expires: 1980-01-20
Abstract
No abstract record available.
Inventors
- 👤 Karpovich John
- 👤 Donald D Setser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:32
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/25; E21B43/26; E21B43/263
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A METHOD OF FRACTURING AN EARTH FORMATION WHICH IS PENETRATED BY A BORE HOLE WHICH COMMUNICATES WITH SAID FORMATION; COMPRISING LOWERING INTO SAID BORE HOLE AT LEAST TO THE APPROXIMATE DEPTH OF THE FORMATION TO BE FRACTURED AT LEAST ONE COMPLETELY FRANGIBLE IMPLODABLE DEVICE WHICH IMPLODES WHEN PRESSURE OF A PREDETERMINED RANGE IS APPLIED THERETO WHILE SAID BORE HOLE IS FILLED WITH LIQUID TO AT LEAST SLIGHTLY ABOVE SAID FORMATION TO BE FRACTURED, SUBJECTING SAID LIQUID TO PRESSURE SUFFICIENT TO IMPLODE AND SHATTER SAID DEVICE, AND THEN PUMPING LIQUID INTO SAID FORMATION.
Claim 2
Independent Claim
92 words
A METHOD OF FRACTURING AN EARTH FORMATION WHICH IS PENETRATED BY A BORE HOLE WHICH COMMUNICATES WITH SAID FORMATION; COMPRISING LOWERING INTO SAID BORE HOLE AT LEAST TO THE APPROXIMATE DEPTH OF THE FORMATION TO BE FRACTURED AT LEAST ONE COMPLETELY FRANGIBLE IMPLODABLE DEVICE WHICH IMPLODES WHEN PRESSURE OF A PREDETERMINED RANGE IS APPLIED THERETO WHILE SAID BORE HOLE IS FILLED WITH LIQUID TO AT LEAST SLIGHTLY ABOVE SAID FORMATION TO BE FRACTURED, SUBJECTING SAID LIQUID TO PRESSURE SUFFICIENT TO IMPLODE AND SHATTER SAID DEVICE, AND THEN PUMPING LIQUID INTO SAID FORMATION.
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) | 1967-10-06 | 1968-04-06 | 1968-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-06 | 1972-04-06 | 1972-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-06 | 1976-04-06 | 1976-10-06 | $7700.00 | Window Closed / Lapsed |