US3240280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling and/or servicing of wells
Assignee: Phillips Petroleum Co
•
Filing: 1962-12-26
•
Granted: 1966-03-15
•
Expires: 1982-12-26
Abstract
No abstract record available.
Inventors
- 👤 Charles A Stratton
- 👤 Schiff Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:22
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/32; C; C09; C09K; C09K8/00; C09K8/02; C09K8/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
IN A WELL WHEREIN AN OPERATION IS BEING CARRIED OUT WHICH COMPRISES REMOVING A STREM OF GAS FROM SAID WELL AND THE LIFTING CAPCITY OF SAID GAS IS REDUCED BY THE PRESENCE OF WATER IN SAID WELL, THE METHOD OF SERVICING SAID WELL, WHICH METHOD COMPRISES INTRODUCING INTO SAID W ELL, IN AN AMOUNT SUFFICIENT TO MAINTAIN THE LIFTING CAPACITY OF SAID GAS, A SALT SELECTED FROM THE GROUP CONSISTING OF AMMONIUM, ALKALI METAL, AND ALKALINE EARTH METAL SALTS OF (A) SULFONATED EXTRACT OIL OBTAINED BY THE SOLVENT EXTRCTION OF A CATALYTICALLY CRACKED HEAVY GS OIL, HAVING A MOLECULAR WEIGHT WITHIN THE RANGE OF FROM ABOUT 300 TO ABOUT 600, AND (B) SULFONATED ASPHALT.
Claim 2
Dependent Claim
114 words
IN A WELL WHEREIN AN OPERATION IS BEING CARRIED OUT WHICH COMPRISES REMOVING A STREM OF GAS FROM SAID WELL AND THE LIFTING CAPCITY OF SAID GAS IS REDUCED BY THE PRESENCE OF WATER IN SAID WELL, THE METHOD OF SERVICING SAID WELL, WHICH METHOD COMPRISES INTRODUCING INTO SAID W ELL, IN AN AMOUNT SUFFICIENT TO MAINTAIN THE LIFTING CAPACITY OF SAID GAS, A SALT SELECTED FROM THE GROUP CONSISTING OF AMMONIUM, ALKALI METAL, AND ALKALINE EARTH METAL SALTS OF (A) SULFONATED EXTRACT OIL OBTAINED BY THE SOLVENT EXTRCTION OF A CATALYTICALLY CRACKED HEAVY GS OIL, HAVING A MOLECULAR WEIGHT WITHIN THE RANGE OF FROM ABOUT 300 TO ABOUT 600, AND (B) SULFONATED ASPHALT.
References Cited (Backward Citations)
GB274611A
Cited
GB289630A
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GB539281A
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US3111178A
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US3111998A
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US3073387A
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US3070165A
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US3130798A
Cited
US3155178A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |