US3149672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for electrical heating of oil-bearing formations
Assignee: Jersey Production Research Co
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Filing: 1962-05-04
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Granted: 1964-09-22
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Expires: 1982-05-04
Abstract
No abstract record available.
Inventors
- 👤 Orkiszewski Joseph
- 👤 James L Hill
- 👤 Preston S Mcreynolds
- 👤 Thomas C Boberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:56
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/2401
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
76 words
A METHOD FOR THERMALLY STIMULATING THE PRODUCTION OF OIL FROM A SUBTERRANEAN RESERVOIR PENETRATED BY A WELLBORE, WHICH COMPRISES FRACTURING THE OIL-BEARING FORMATION IN AN UPPER REGION THEREOF, FRACTURING SAID FORMATION IN A LOWER REGION THEREOF, PROPPING SAID FRACTURES WITH PAR-F TICLES OF AN ELECTRICAL CONDUCTOR, CONNECTING SAID FRACTURES WITH A SOURCE OF ELECTRIC CURRENT, PASSING AN ELECTRIC CURRENT BETWEEN SAID FRACTURES TO HEAT SAID FORMATION, AND WITHDRAWING OIL FROM SAID WELLBORE AT A STIMULATED RATE.
Claim 2
Independent Claim
76 words
A METHOD FOR THERMALLY STIMULATING THE PRODUCTION OF OIL FROM A SUBTERRANEAN RESERVOIR PENETRATED BY A WELLBORE, WHICH COMPRISES FRACTURING THE OIL-BEARING FORMATION IN AN UPPER REGION THEREOF, FRACTURING SAID FORMATION IN A LOWER REGION THEREOF, PROPPING SAID FRACTURES WITH PAR-F TICLES OF AN ELECTRICAL CONDUCTOR, CONNECTING SAID FRACTURES WITH A SOURCE OF ELECTRIC CURRENT, PASSING AN ELECTRIC CURRENT BETWEEN SAID FRACTURES TO HEAT SAID FORMATION, AND WITHDRAWING OIL FROM SAID WELLBORE AT A STIMULATED RATE.
Claim 3
Dependent Claim
136 words
APPARATUS FOR ELECTRICALLY HEATING A SUBTERRANEAN OIL-BEARING FORMATION PENETRATED BY A WELLBORE, SAID FORMATION HAVING TWO VERTICALLY SPACED CONDUCTOR-PROPPED FRACTURES EXTENDING RADIALLY FROM SAID WELLBORE, WHICH COMPRISES A TRANSFORMER, AN ELECTRICAL INPUT CABLE CONNECTED TO THE RESPECTIVE TERMINALS OF THE PRIMARY WINDING OF SAID TRANSFORMER, A CONNECTION COLLAR ASSEMBLY AT EACH END OF SAID TRANSFORMER ELECTRICALLY CONNECTED TO THE RESPECTIVE TERMINALS OF THE SECONDARY WINDING OF SAID TRANSFORMER, SAID TRANSFORMER AND SAID COLLAR ASSEMBLIES BEING ADAPTED TO BE MOUNTED ON A TUBING STRING AND LOWERED THEREWITH INTO SAID WELLBORE TO A POSITION OPPOSITE SAID OIL-BEARING FORMATION, SAID COLLAR ASSEMBLIES BEING SPACED FROM EACH OTHER ALONG SAID TUBING STRING A DISTANCE SUBSTANTIALLY EQUAL TO THE VERTICAL SPACING OF SAID FRACTURES, AND SAID COLLAR ASSEMBLIES COMPRISING MEANS FOR ESTABLISHING ELECTRICAL CONTACT WITH THE PROPPING MATERIAL IN SAID FRACTURES.
Claim 4
Dependent Claim
136 words
APPARATUS FOR ELECTRICALLY HEATING A SUBTERRANEAN OIL-BEARING FORMATION PENETRATED BY A WELLBORE, SAID FORMATION HAVING TWO VERTICALLY SPACED CONDUCTOR-PROPPED FRACTURES EXTENDING RADIALLY FROM SAID WELLBORE, WHICH COMPRISES A TRANSFORMER, AN ELECTRICAL INPUT CABLE CONNECTED TO THE RESPECTIVE TERMINALS OF THE PRIMARY WINDING OF SAID TRANSFORMER, A CONNECTION COLLAR ASSEMBLY AT EACH END OF SAID TRANSFORMER ELECTRICALLY CONNECTED TO THE RESPECTIVE TERMINALS OF THE SECONDARY WINDING OF SAID TRANSFORMER, SAID TRANSFORMER AND SAID COLLAR ASSEMBLIES BEING ADAPTED TO BE MOUNTED ON A TUBING STRING AND LOWERED THEREWITH INTO SAID WELLBORE TO A POSITION OPPOSITE SAID OIL-BEARING FORMATION, SAID COLLAR ASSEMBLIES BEING SPACED FROM EACH OTHER ALONG SAID TUBING STRING A DISTANCE SUBSTANTIALLY EQUAL TO THE VERTICAL SPACING OF SAID FRACTURES, AND SAID COLLAR ASSEMBLIES COMPRISING MEANS FOR ESTABLISHING ELECTRICAL CONTACT WITH THE PROPPING MATERIAL IN SAID FRACTURES.
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) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |