US2850098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the removal of petrifactions, incrustations and other contaminating substances in wells, pipes, machine parts and like equipment by treatment with a gaseous acid
Assignee: Union Rheinische Braunkohlen Kraftstoff AG
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Filing: 1955-06-30
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Granted: 1958-09-02
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Expires: 1975-06-30
Abstract
No abstract record available.
Inventors
- 👤 Moll Bernhard
- 👤 Sustmann Heinz
- 👤 Schneider Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:35
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/52; C09K8/528
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A PROCESS FOR REMOVING CONTAMINATES FROM WATER WELLS AND THE AREA SURROUNDING SUCH WELLS WHICH COMPRISES INJECTING A GAS UNDER PRESSURE INTO A HERMETICALLYSEALED WELL TO FORCE A SUBSTANTIAL PORTION OF THE WATER OUT OF A TREATING AREA, WHICH INCLUDES THE WELL AND THE AREA IMMEDIATELY ADJACENT THE WELL, INTO THE MORE REMOTE AREAS, THEN INJECTING AN ANHYDROUS GASEOUS ACID WHICH CHEMICALLY REACTS WITH THE CONTAMINATES IN THE TRATING AREA INTO THE WELL UNDER A PRESSURE WHICH IS GREATER THAN THE PRESSURE OF SAID GAS, SAID ANHYDROUS ACID COMBINING WITH THOSE WATER PARTICLES WHICH TEND TO ADHERE TO THE CONTAMINATES IN THE TREATING AREA TO FORM HIGHLY CONCENTRATED AQUEOUS ACIDS WHICH ACT TO DISSOLVE SAID CONTAMINATES, AND THEN RELEASING THE PRESSURE IN THE WELL TO EFFECT A RETURN FLOW OF THE WATER FROM THE MORE REMOTE AREAS, SAID WATER ACTING TO ENTRAIN THE DISSOLVED CONTAMINATES THEREIN.
Claim 2
Dependent Claim
146 words
A PROCESS FOR REMOVING CONTAMINATES FROM WATER WELLS AND THE AREA SURROUNDING SUCH WELLS WHICH COMPRISES INJECTING A GAS UNDER PRESSURE INTO A HERMETICALLYSEALED WELL TO FORCE A SUBSTANTIAL PORTION OF THE WATER OUT OF A TREATING AREA, WHICH INCLUDES THE WELL AND THE AREA IMMEDIATELY ADJACENT THE WELL, INTO THE MORE REMOTE AREAS, THEN INJECTING AN ANHYDROUS GASEOUS ACID WHICH CHEMICALLY REACTS WITH THE CONTAMINATES IN THE TRATING AREA INTO THE WELL UNDER A PRESSURE WHICH IS GREATER THAN THE PRESSURE OF SAID GAS, SAID ANHYDROUS ACID COMBINING WITH THOSE WATER PARTICLES WHICH TEND TO ADHERE TO THE CONTAMINATES IN THE TREATING AREA TO FORM HIGHLY CONCENTRATED AQUEOUS ACIDS WHICH ACT TO DISSOLVE SAID CONTAMINATES, AND THEN RELEASING THE PRESSURE IN THE WELL TO EFFECT A RETURN FLOW OF THE WATER FROM THE MORE REMOTE AREAS, SAID WATER ACTING TO ENTRAIN THE DISSOLVED CONTAMINATES THEREIN.
References Cited (Backward Citations)
US1999146A
Cited
US2675083A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |