US3342264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
A method of removing solid paraffincontaining deposits from oil well surfaces and compositions therefor
Assignee: J B OIL TREAT Co Inc
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Filing: 1965-08-12
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Granted: 1967-09-19
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Expires: 1985-08-12
Abstract
No abstract record available.
Inventors
- 👤 Sr John W Willard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:46
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/52; C09K8/524; Y; Y10; Y10S; Y10S507/00; Y10S507/927; Y10S507/929; Y10S507/931
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A METHOD OF REMOVING PARAFFIN-CONTAINING DEPOSITS ON SURFACES IN OIL WELLS COMPRISING INTRODUCING LECITHIN INTO THE INTERIOR OF THE WELL AND INTO INTIMATE CONTACT WITH THE SAID DEPOSITS, INTRODUCING AN AQUEOUS SOLUTION OF ALKALI WHICH CONTAIN SUFFICIENT ALKALI TO SAPONIFY THE LECITHIN INTO THE INTERIOR OF THE WELL AND INTO INTIMATE CONTACT WITH THE SAID DEPOSITS, THE ALKALI BEING SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL HYDROXIDES, CARBONATES, PHOSPHATES AND SILICATES, AND THEREAFTER INTRODUCING WATER INTO THE INTERIOR OF THE WELL AND FLUSHING THE WELL THEREWITH.
Claim 2
Independent Claim
87 words
A METHOD OF REMOVING PARAFFIN-CONTAINING DEPOSITS ON SURFACES IN OIL WELLS COMPRISING INTRODUCING LECITHIN INTO THE INTERIOR OF THE WELL AND INTO INTIMATE CONTACT WITH THE SAID DEPOSITS, INTRODUCING AN AQUEOUS SOLUTION OF ALKALI WHICH CONTAIN SUFFICIENT ALKALI TO SAPONIFY THE LECITHIN INTO THE INTERIOR OF THE WELL AND INTO INTIMATE CONTACT WITH THE SAID DEPOSITS, THE ALKALI BEING SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL HYDROXIDES, CARBONATES, PHOSPHATES AND SILICATES, AND THEREAFTER INTRODUCING WATER INTO THE INTERIOR OF THE WELL AND FLUSHING THE WELL THEREWITH.
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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) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |