Patent US3014531A successfully refreshed from Google Patents.
US3014531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cleaning oil wells
Assignee: Paraffin Melting Co Inc
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Filing: 1958-11-05
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Granted: 1961-12-26
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Expires: 1978-11-05
Abstract
No abstract record available.
Inventors
- 👤 Hugh J Weaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:45
CPC Classifications
E; E21; E21B; E21B36/00; E21B37/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A METHOD OF TREATING THE TUBING OF AN OIL WELL HAVING RESIDENT OIL THEREIN TO REMOVE DEPOSITS OF PARAFFIN THEREFROM COMPRISING, INTRODUCING A DEPARAFFINING FLUID INTO THE UPPER PORTION OF THE TUBING TO FORM A DOWNWARDLY MOVING FLUID COLUMN IN THE TUBING, CONTACTING AND MOVING THE RESIDENT OIL DOWNWARDLY BY THE DOWNWARDLY MOVING FLUID COLUMN CONTINUOUSLY DISCHARGING THE RESIDENT OIL AND DEPARAFFINING FLUID DOWNWARDLY IN THE WELL FROM THE TUBING AT A POINT BELOW THE DEPOSITS OF PARAFFIN, CONTINUING TO INTRODUCE THE DEPARAFFINING FLUID INTO THE TUBING TO FORM SAID FLUID COLUMN AND TO CONTINUOUSLY MOVE SAID FLUID COLUMN PAST THE PARAFFIN DEPOSITS UNTIL THE PARAFFIN DEPOSITS ARE SUBSTANTIALLY COMPLETELY REMOVED AND THE REMOVED PARAFFIN HAS GONE INTO SOLUTION THEREIN, AND CONTINUING TO DISCHARGE THE DOWNWARDLY MOVING COLUMN OF DEPARAFFINING FLUID WITH PARAFFIN IN SOLUTION THEREIN FROM THE TUBING AT THE POINT BELOW THE PARAFFIN DEPOSITS.
Claim 2
Independent Claim
146 words
A METHOD OF TREATING THE TUBING OF AN OIL WELL HAVING RESIDENT OIL THEREIN TO REMOVE DEPOSITS OF PARAFFIN THEREFROM COMPRISING, INTRODUCING A DEPARAFFINING FLUID INTO THE UPPER PORTION OF THE TUBING TO FORM A DOWNWARDLY MOVING FLUID COLUMN IN THE TUBING, CONTACTING AND MOVING THE RESIDENT OIL DOWNWARDLY BY THE DOWNWARDLY MOVING FLUID COLUMN CONTINUOUSLY DISCHARGING THE RESIDENT OIL AND DEPARAFFINING FLUID DOWNWARDLY IN THE WELL FROM THE TUBING AT A POINT BELOW THE DEPOSITS OF PARAFFIN, CONTINUING TO INTRODUCE THE DEPARAFFINING FLUID INTO THE TUBING TO FORM SAID FLUID COLUMN AND TO CONTINUOUSLY MOVE SAID FLUID COLUMN PAST THE PARAFFIN DEPOSITS UNTIL THE PARAFFIN DEPOSITS ARE SUBSTANTIALLY COMPLETELY REMOVED AND THE REMOVED PARAFFIN HAS GONE INTO SOLUTION THEREIN, AND CONTINUING TO DISCHARGE THE DOWNWARDLY MOVING COLUMN OF DEPARAFFINING FLUID WITH PARAFFIN IN SOLUTION THEREIN FROM THE TUBING AT THE POINT BELOW THE PARAFFIN DEPOSITS.
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) | 1964-12-25 | 1965-06-26 | 1965-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-25 | 1969-06-26 | 1969-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-25 | 1973-06-26 | 1973-12-26 | $7700.00 | Window Closed / Lapsed |