US3228472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic chemical injection apparatus for wells
Assignee: Odex Engineering Co
•
Filing: 1963-01-30
•
Granted: 1966-01-11
•
Expires: 1983-01-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Benjamin J Rhoads
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:04
CPC Classifications
E; E21; E21B; E21B41/00; E21B41/02; Y; Y10; Y10S; Y10S166/00; Y10S166/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
APPARATUS FOR INJECTING FLUID FROM A SOURCE INTO A WELL HAVING A PRODUCTION CONDUIT, SAID APPARATUS INCLUDING IN COMBINATION HYDRAULIC PRESSURE MEANS, CHAMBER MEMBER MEANS COUPLED IN FLUID COMMUNICATION TO SAID HYDRAULIC PRESSURE MEANS, TO SAID SOURCE, AND TO SAID WELL, CONTROL MEANS COUPLED IN FLUID COMMUNICATION TO SAID HYDRAULIC PRESSURE MEANS AND TO SAID CHAMBER MEMBER MEANS, AND TIMING MEANS COUPLED TO SAID HYDRAULIC PRESSURE MEANS FOR PERIODICALLY ACTUATING THE SAME TO ALLOW A SELECTED VOLUME OF FLUID TO FLOW INTO SAID CHAMBER MEMBER MEANS FROM SAID SOURCE, SAID CONTROL MEANS PROVIDING INJECTION OF THE SELECTED VOLUME OF FLUID IN SAID CHAMBER MEMBER MEANS INTO THE WELL AS PRODUCED FLUIDS FROM THE WELL FLUSH SAID SELECTED VOLUME OF FLUID TO THE BOTTOM OF THE WELL.
Claim 2
Dependent Claim
126 words
APPARATUS FOR INJECTING FLUID FROM A SOURCE INTO A WELL HAVING A PRODUCTION CONDUIT, SAID APPARATUS INCLUDING IN COMBINATION HYDRAULIC PRESSURE MEANS, CHAMBER MEMBER MEANS COUPLED IN FLUID COMMUNICATION TO SAID HYDRAULIC PRESSURE MEANS, TO SAID SOURCE, AND TO SAID WELL, CONTROL MEANS COUPLED IN FLUID COMMUNICATION TO SAID HYDRAULIC PRESSURE MEANS AND TO SAID CHAMBER MEMBER MEANS, AND TIMING MEANS COUPLED TO SAID HYDRAULIC PRESSURE MEANS FOR PERIODICALLY ACTUATING THE SAME TO ALLOW A SELECTED VOLUME OF FLUID TO FLOW INTO SAID CHAMBER MEMBER MEANS FROM SAID SOURCE, SAID CONTROL MEANS PROVIDING INJECTION OF THE SELECTED VOLUME OF FLUID IN SAID CHAMBER MEMBER MEANS INTO THE WELL AS PRODUCED FLUIDS FROM THE WELL FLUSH SAID SELECTED VOLUME OF FLUID TO THE BOTTOM OF THE WELL.
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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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |