Patent CA460099A successfully refreshed from Google Patents.
Patent US3158199A successfully refreshed from Google Patents.
US3158199A
Expired / Lapsed
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Treatment of subterranean formations
Assignee: ExxonMobil Oil Corp
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Filing: 1955-08-11
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Granted: 1964-11-24
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Expires: 1975-08-11
Abstract
No abstract record available.
Inventors
- 👤 Warren E Parkhurst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:46
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/584
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A METHOD FOR THE TREATMENT OF A SUBTERRANEAN FORMATION CONTAINING PETROLEUM OIL AND ALSO CONTAINING WATER WHICH IS SUSCEPTIBLE TO EMULSIFICATION WITH OIL WITH CON SEQUENT IMPEDANCE OF THE FLOW OF PETROLEUM OIL FROM SAID FORMATION COMPRISING SUBJECTING SAID FORMATION TO THE ACTION OF A SOLUTION IN OIL OF POLYOXYETHYLENE ETHER OF NONYL PHENYL HAVING AN OXYETHYLENE CHAIN CONTAINING A GIVEN NUMBER OF MOLES OF ETHYLENE OXIDE BETWEEN 1 AND 6 AND THEREAFTER SUBJECTING SAID FORMATION TO THE ACTION OF A SOLUTION IN OIL OF POLYOXYETHYLENE ETHER OF NONYL PHENOL HAVNG AN OXYETHYLENE CHAING CONTAINING A NUMBER OF MOLES OF ETHYLENE OXIDE BETWEEN 1 AND 6 GREATER THAN SAID GIVEN NUMBER.
Claim 2
Independent Claim
111 words
A METHOD FOR THE TREATMENT OF A SUBTERRANEAN FORMATION CONTAINING PETROLEUM OIL AND ALSO CONTAINING WATER WHICH IS SUSCEPTIBLE TO EMULSIFICATION WITH OIL WITH CON SEQUENT IMPEDANCE OF THE FLOW OF PETROLEUM OIL FROM SAID FORMATION COMPRISING SUBJECTING SAID FORMATION TO THE ACTION OF A SOLUTION IN OIL OF POLYOXYETHYLENE ETHER OF NONYL PHENYL HAVING AN OXYETHYLENE CHAIN CONTAINING A GIVEN NUMBER OF MOLES OF ETHYLENE OXIDE BETWEEN 1 AND 6 AND THEREAFTER SUBJECTING SAID FORMATION TO THE ACTION OF A SOLUTION IN OIL OF POLYOXYETHYLENE ETHER OF NONYL PHENOL HAVNG AN OXYETHYLENE CHAING CONTAINING A NUMBER OF MOLES OF ETHYLENE OXIDE BETWEEN 1 AND 6 GREATER THAN SAID GIVEN NUMBER.
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) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |