Patent US4825151A successfully refreshed from Google Patents.
Patent US3342265A successfully refreshed from Google Patents.
US3342265A
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Method of removing solid paraffin-containing deposits from oil well surfaces
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
- 👤 Brorby John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:15
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
98 words
A METHOD OF REMOVING SOLID PARAFFIN-CONTAINING DEPOSITS ON SURFACES IN OIL WELLS COMPRISING THE STEPS OF INTRODUCING INTO THE INTERIOR OF THE OIL WELL AND INTO INTIMATE CONTACT WITH THE SAID SOLID DEPOSITS A TRIGLYCERIDE VEGETABLE OIL, THEREAFTER INTRODUCING AN AQUEOUS SOLUTION OF ALKALI WHICH CONTAINS SUFFICIENT ALKALI TO SAPONIFY THE ESTER INTO THE INTERIOR OF THE WELL AND INTO INTIMATE CONTACT WITH THE SAID SOLID DEPOSITS, THE ALKALI BEING SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL HYDROXIDES, CARBONATES, PHOSPHATES, AND SILICATES, AND THEN INTRODUCING WATER INTO THE INTERIOR OF THE WELL AND FLUSHING THE WELL THEREWITH.
Claim 2
Independent Claim
98 words
A METHOD OF REMOVING SOLID PARAFFIN-CONTAINING DEPOSITS ON SURFACES IN OIL WELLS COMPRISING THE STEPS OF INTRODUCING INTO THE INTERIOR OF THE OIL WELL AND INTO INTIMATE CONTACT WITH THE SAID SOLID DEPOSITS A TRIGLYCERIDE VEGETABLE OIL, THEREAFTER INTRODUCING AN AQUEOUS SOLUTION OF ALKALI WHICH CONTAINS SUFFICIENT ALKALI TO SAPONIFY THE ESTER INTO THE INTERIOR OF THE WELL AND INTO INTIMATE CONTACT WITH THE SAID SOLID DEPOSITS, THE ALKALI BEING SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL HYDROXIDES, CARBONATES, PHOSPHATES, AND SILICATES, AND THEN 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 |