US3035637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of petroleum
Assignee: Texaco Inc
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Filing: 1957-09-09
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Granted: 1962-05-22
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Expires: 1977-09-09
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:10
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
IN A SECONDARY RECOVERY OPERATION OF PETROLEUM FROM AN UNDERGROUND PETROLEUM BEARING FORMATION WHEREIN A FLUID IS INTRODUCED VIA AN INJECTION WELL INTO SAID PETROLEUM BEARING FORMATION TO DRIVE PETROLEUM FROM SAID FORMATION TOWARD A PRODUCTION WELL, THE IMPROVEMENT WHICH COMPRISES EMPLOYING AS SAID FLUID A FIRST GASEOUS HYDROCARBON MIXTURE HAVING A COMPOSITION WITH RESPECT TO SAID PETROLEUM IN SAID FORMATION SUCH THAT SAID FIRST GASEOUS HYDROCARBON MIXTURE IS CAPABLE UPON ADMIXTURE WITH SAID PETROLEUM WITHIN SAID FORMATION OF FORMING THEREWITH A FIRST SINGLE PHASE ADMIXTURE IN THE CRITICAL STATE HAVING THE COMPOSITION INDICATED AT THE CRITICAL POINT OF SAID PETROLEUM WITHIN SAID FORMATION UNDER THE FORMATION CONDITIONS OF TEMPERATURE AND PRESSURE AS INDICATED ON A THREE COMPONENT METHANE -C2-6-C7+ PHASE DIAGRAM FOR SAID PETROLEUM UNDER FORMATION CONDITIONS OF TEMPERATURE AND PRESSURE, FORMING THE AFORESAID FIRST SINGLE PHASE ADMIXTURE WITHIN SAID FORMATION BY INJECTING SAID FIRST GASEOUS HYDROCARBON MIXTURE THEREINTO, SUBSEQUENTLY INJECTING INTO SAID FORMATION VIA SAID INJECTION WELL A SECOND GASEOUS HYDROCARBON MIXTURE HAVING A COMPOSITION WITH RESPECT TO SAID FIRST
Claim 2
Dependent Claim
172 words
IN A SECONDARY RECOVERY OPERATION OF PETROLEUM FROM AN UNDERGROUND PETROLEUM BEARING FORMATION WHEREIN A FLUID IS INTRODUCED VIA AN INJECTION WELL INTO SAID PETROLEUM BEARING FORMATION TO DRIVE PETROLEUM FROM SAID FORMATION TOWARD A PRODUCTION WELL, THE IMPROVEMENT WHICH COMPRISES EMPLOYING AS SAID FLUID A FIRST GASEOUS HYDROCARBON MIXTURE HAVING A COMPOSITION WITH RESPECT TO SAID PETROLEUM IN SAID FORMATION SUCH THAT SAID FIRST GASEOUS HYDROCARBON MIXTURE IS CAPABLE UPON ADMIXTURE WITH SAID PETROLEUM WITHIN SAID FORMATION OF FORMING THEREWITH A FIRST SINGLE PHASE ADMIXTURE IN THE CRITICAL STATE HAVING THE COMPOSITION INDICATED AT THE CRITICAL POINT OF SAID PETROLEUM WITHIN SAID FORMATION UNDER THE FORMATION CONDITIONS OF TEMPERATURE AND PRESSURE AS INDICATED ON A THREE COMPONENT METHANE -C2-6-C7+ PHASE DIAGRAM FOR SAID PETROLEUM UNDER FORMATION CONDITIONS OF TEMPERATURE AND PRESSURE, FORMING THE AFORESAID FIRST SINGLE PHASE ADMIXTURE WITHIN SAID FORMATION BY INJECTING SAID FIRST GASEOUS HYDROCARBON MIXTURE THEREINTO, SUBSEQUENTLY INJECTING INTO SAID FORMATION VIA SAID INJECTION WELL A SECOND GASEOUS HYDROCARBON MIXTURE HAVING A COMPOSITION WITH RESPECT TO SAID FIRST
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) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |