Patent US3297083A successfully refreshed from Google Patents.
US3297083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Subsurface chemical treatment of wells
Assignee: Otis Engineering Corp
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Filing: 1963-10-28
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Granted: 1967-01-10
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Expires: 1983-10-28
Abstract
No abstract record available.
Inventors
- 👤 Frank H Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:21
CPC Classifications
E; E21; E21B; E21B37/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
THE METHOD OF DISSOLVING A SUBSTANCE IN WELL FLUIDS FLOWING THROUGH A WELL FLOW CONDUCTOR WHICH INCLUDES THE STEPS OF: POSITIONING A HOLDER HAVING A CHAMBER WHICH OPENS DOWNSTREAM OF THE WELL FLUID FLOW AND VALVE MEANS FOR PREVENTING DOWNSTREAM MOVEMENT OF A SOLID BODY FROM THE CHAMBER; CLOSING THE FLOW CONDUCTOR TO PREVENT FLOW OF WELL FLUIDS THERETHROUGH; INTRODUCING A SOLID BODY OF THE SUBSTANCE INTO THE DOWNSTREAM END OF THE FLOW CONDUCTOR FOR MOVEMENT THROUGH THE FLOW CONDUCTOR AND INTO THE CHAMBER PAST THE VALVE MEANS; AND THEN OPENING THE FLOW CONDUCTOR TO FLOW OF WELL FLUIDS THERETHROUGH PAST THE SOLID BODY IN THE HOLDER TO CAUSE THE SUBSTANCE TO BE DISSOLVED IN THE WELL FLUIDS.
Claim 2
Independent Claim
118 words
THE METHOD OF DISSOLVING A SUBSTANCE IN WELL FLUIDS FLOWING THROUGH A WELL FLOW CONDUCTOR WHICH INCLUDES THE STEPS OF: POSITIONING A HOLDER HAVING A CHAMBER WHICH OPENS DOWNSTREAM OF THE WELL FLUID FLOW AND VALVE MEANS FOR PREVENTING DOWNSTREAM MOVEMENT OF A SOLID BODY FROM THE CHAMBER; CLOSING THE FLOW CONDUCTOR TO PREVENT FLOW OF WELL FLUIDS THERETHROUGH; INTRODUCING A SOLID BODY OF THE SUBSTANCE INTO THE DOWNSTREAM END OF THE FLOW CONDUCTOR FOR MOVEMENT THROUGH THE FLOW CONDUCTOR AND INTO THE CHAMBER PAST THE VALVE MEANS; AND THEN OPENING THE FLOW CONDUCTOR TO FLOW OF WELL FLUIDS THERETHROUGH PAST THE SOLID BODY IN THE HOLDER TO CAUSE THE SUBSTANCE TO BE DISSOLVED IN THE WELL FLUIDS.
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) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |