Patent US3372746A successfully refreshed from Google Patents.
US3372746A
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Method of determining the extent of return to the surface of an oil well treatment fluid
Assignee: Halliburton Co
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Filing: 1965-02-19
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Granted: 1968-03-12
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Expires: 1985-02-19
Abstract
No abstract record available.
Inventors
- 👤 Wilson I Sanderson
- 👤 Reginald M Lasater
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:30
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/10; E21B47/11; C; C09; C09K; C09K8/00; C09K8/02; C09K8/03; C09K8/035
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A METHOD OF DETERMINING THE EXTENT TO WHICH AN AQUEOUS OIL WELL TREATMETN FLUID HAS RETURNED TO THE SUR-L FACE, WHICH COMPRISES, FIRST INCORPORATING A PREDETERMINED PROPORTION OF A NON-ABSORBED, OIL-INSOLUBLE INDICATOR INTO THE AQUEOUS OIL WELL TREATMENT FLUID, INJECTING A KNOWN AMOUNT OF THE FLUID INTO THE WELL, REMOVING THE INJECTED FLUID TOGETHER WITH ANY ACCOMPANYING FORMATION LIQUIDS FROM THE WELL, AND DETERMINING THE PROPORTION OF INDICATOR PRESENT IN THE FLUID REMOVED.
Claim 2
Independent Claim
73 words
A METHOD OF DETERMINING THE EXTENT TO WHICH AN AQUEOUS OIL WELL TREATMETN FLUID HAS RETURNED TO THE SUR-L FACE, WHICH COMPRISES, FIRST INCORPORATING A PREDETERMINED PROPORTION OF A NON-ABSORBED, OIL-INSOLUBLE INDICATOR INTO THE AQUEOUS OIL WELL TREATMENT FLUID, INJECTING A KNOWN AMOUNT OF THE FLUID INTO THE WELL, REMOVING THE INJECTED FLUID TOGETHER WITH ANY ACCOMPANYING FORMATION LIQUIDS FROM THE WELL, AND DETERMINING THE PROPORTION OF INDICATOR PRESENT IN THE FLUID REMOVED.
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) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |