US3004594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing oil
Assignee: Phillips Petroleum Co
•
Filing: 1956-11-19
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Granted: 1961-10-17
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Expires: 1976-11-19
Abstract
No abstract record available.
Inventors
- 👤 Francis W Crawford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:53
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/243; E21B43/247; E21B43/25; E21B43/26; E21B43/267
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A PROCESS FOR FRACTURING A CARBONACEOUS FORMATION WHICH COMPRISES PENETRATING SAID FORMATION WITH FIRST AND SECOND BOREHOLES WITHIN FRACTURING DISTANCE THRU SAID FORMATION, PRODUCING A FRACTURE IN SAID FORMATION FROM THE FIRST TO THE SECOND OF SAID BOREHOLES BY DIRECT APPLICATION OF FRACTURING PRESSURE THEREON THRU ONE OF SAID BOREHOLES FROM A SUFFICIENTLY LARGE VOLUME OF READILY COMPRESSIBLE FLUID COMPRISING GAS TO PROVIDE SURGES OF FLUID INTO SAID FRACTURE TO IMMEDIATELY OCCUPY AND EXTEND SAME DEEPTER INTO THE FORMATION FROM SAID ONE BOREHOLE AND MAINTAIN SUPPORT PRESSURE TO HOLD SAID FRACTURE OPEN, AFTER FRACTURING HAS OCCURED, ALTERNATELY DECREASING THE FLUID PRESSURE SO AS TO CLOSE THE FRACTURE AND INCREASING SAID FLUID PRESSURE SO AS TO OPEN THE FRACTURE AND CAUSE SAID FLUID TO RUSH OUT OF AND INTO SAID FRACTURE THEREBY CREATING DEBRIS THEREIN WHICH SERVES AS A PROPPING AGENT.
Claim 2
Dependent Claim
151 words
A PROCESS FOR FRACTURING A CARBONACEOUS FORMATION WHICH COMPRISES PENETRATING SAID FORMATION WITH FIRST AND SECOND BOREHOLES WITHIN FRACTURING DISTANCE THRU SAID FORMATION, PRODUCING A FRACTURE IN SAID FORMATION FROM THE FRIST TO THE SECOND OF SAID BOREHOLES BY DIRECT APPLICATION OF FRACTURING PRESSURE THEREON THRU SAID FIRST BOREHOLE FROM A SUFFICIENTLY LARGE VOLUME OF COMBUSTION SUPPORTING GAS TO PROVIDE SURGES OF FLUID INTO SAID FRACTURE TO IMEDIATELY OCCUPY AND EXTEND SAME DEEPER INTO THE FORMATION AND MAINTAIN SUPPORTING PRESSURE TO HOLD SAID FRACTURE OPEN, BEFORE SAID FRACTURE IS MADE, HEATING SAID FORMATION ADJACENT SAID SECOND BOREHOLE TO AT LEAST COMBUSTION TEMPERATURE SO THAT SAME IS IGNITED AS SAID GAS REACHES THE HOT AREA THRU SAID FRACTURE, CONTINUING THE FEEDING OF SAID GAS THRU SAID FRACTURE TO THE RESULTING COMBUSTION FRONT TO CAUSE SAME TO MOVE THRU SAID FORMATION TOWARD SAID FIRST BOREHOLE, AND RECOVERING PRODUCED HYDROCARBONS THRU SAID SECOND BOREHOLE.
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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) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |