US3193012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cutting a notch in an underground formation penetrated by a well
Assignee: Gulf Research and Development Co
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Filing: 1961-05-29
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Granted: 1965-07-06
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Expires: 1981-05-29
Abstract
No abstract record available.
Inventors
- 👤 Jimmie L Huitt
- 👤 Joseph L Pekarek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:25
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/11; E21B43/114
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A METHOD OF HYDRAULICALLY CUTTING A NOTCH IN A SUBSURFACE FORMATION PENETRATED BY A WELL HAVING CASING SET THEREIN BY MEANS OF A HIGH VELOCITY STREAM OF A CUTTING FLUID DISCHARGED FROM A NOZZLE FOR INTIATION OF A FRACTURE IN THE SUBSURFACE FORMATION, COMPRISING CUTTING A CIRCUMFERENTIAL OPENING IN THE CASING WALL HAVING A WIDTH AT LEAST FOUR TIMES THE DIAMETER OF THE NOZZLE AT THE DESIRED DEPTH TO EXPOSE THE SUBSURFACE FORMATION, THEREAFTER CENTERING A NOZZLE OPPOSITE THE CIRCUMFERENTIAL OPENING AND DIRECTING A HIGH VELOCITY STREAM OF A CUTTING FLUID FROM THE NOZZLE THROUGH THE CIRCUMFERENTIAL OPENING IN THE CASING WALL TO CUT A NOTCH IN THE FORMATION, AND ROTATING THE NOZZLE ABOUT A VERTICAL AXIS AND IN A HORIZONTAL PLANE ADAPTED TO DIRECT THE HIGH VELOCITY STREAM THROUGH THE CIRCUMFERENTIAL OPENING WHILE DISCHARGING THE HIGH VELOCITY STREAM OF A CUTTING FLUID FROM THE NOZZLE.
Claim 2
Independent Claim
146 words
A METHOD OF HYDRAULICALLY CUTTING A NOTCH IN A SUBSURFACE FORMATION PENETRATED BY A WELL HAVING CASING SET THEREIN BY MEANS OF A HIGH VELOCITY STREAM OF A CUTTING FLUID DISCHARGED FROM A NOZZLE FOR INTIATION OF A FRACTURE IN THE SUBSURFACE FORMATION, COMPRISING CUTTING A CIRCUMFERENTIAL OPENING IN THE CASING WALL HAVING A WIDTH AT LEAST FOUR TIMES THE DIAMETER OF THE NOZZLE AT THE DESIRED DEPTH TO EXPOSE THE SUBSURFACE FORMATION, THEREAFTER CENTERING A NOZZLE OPPOSITE THE CIRCUMFERENTIAL OPENING AND DIRECTING A HIGH VELOCITY STREAM OF A CUTTING FLUID FROM THE NOZZLE THROUGH THE CIRCUMFERENTIAL OPENING IN THE CASING WALL TO CUT A NOTCH IN THE FORMATION, AND ROTATING THE NOZZLE ABOUT A VERTICAL AXIS AND IN A HORIZONTAL PLANE ADAPTED TO DIRECT THE HIGH VELOCITY STREAM THROUGH THE CIRCUMFERENTIAL OPENING WHILE DISCHARGING THE HIGH VELOCITY STREAM OF A CUTTING FLUID FROM THE NOZZLE.
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) | 1968-07-05 | 1969-01-04 | 1969-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-05 | 1973-01-04 | 1973-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-05 | 1977-01-04 | 1977-07-06 | $7700.00 | Window Closed / Lapsed |