US3123708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well production method using radioactive
Assignee: —
•
Filing: —
•
Granted: 1964-03-03
•
Expires: 1981-03-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:30
CPC Classifications
G; G21; G21H; G21H5/00; G21H5/02; E; E21; E21B; E21B47/00; E21B47/10; E21B47/11; E21B47/111
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A PRODUCTIVITY PROFILE LOGGING METHOD OF DISCHARGING OUT OF THE TOP OF A BOREHOLE FLUID FLOWING FROM A VERTICAL INTERVAL OF SUBSURFACE STRATA INTO SAID BOREHOLE WHICH COMPRISES DIVIDING FLUID FLOWING INTO THE BOREHOLE FROM SUBSURFACE STRATA INTO FIRST, SECOND AND THIRD STREAMS SO AS TO ESTABLISH IN THE BOREHOLE A FIRST NULL POINT OF FLOW BETWEEN THE FIRST AND SECOND STREAMS AND A SECOND NULL POINT OF FLOW BETWEEN THE SECOND AND THIRD STREAMS, DETERMINING THE DEPTHS IN THE BOREHOLE OF SAID FIRST AND SECOND NULL POINTS OF FLOW, AND ADJUSTING THE RATES OF FLOW OF EACH OF THE STREAMS WHILE MAINTAINING CONSTANT THE SUM OF THE FLOW RATES OF THE THREE STREAMS SO THAT THE FIRST NULL POINT OF FLOW IS POSITIONED AT ONE OF THE LIMITS OF THE VERTICAL INTERVAL OF SUBSURFACEA STRATA AND THE SECOND NULL POINT OF FLOW IS POSITIONED AT THE OTHER LIMIT OF SAID VERTICAL INTERVAL.
Claim 2
Dependent Claim
153 words
A PRODUCTIVITY PROFILE LOGGING METHOD OF DISCHARGING OUT OF THE TOP OF A BOREHOLE FLUID FLOWING FROM A VERTICAL INTERVAL OF SUBSURFACE STRATA INTO SAID BOREHOLE WHICH COMPRISES DIVIDING FLUID FLOWING INTO THE BOREHOLE FROM SUBSURFACE STRATA INTO FIRST, SECOND AND THIRD STREAMS SO AS TO ESTABLISH IN THE BOREHOLE A FIRST NULL POINT OF FLOW BETWEEN THE FIRST AND SECOND STREAMS AND A SECOND NULL POINT OF FLOW BETWEEN THE SECOND AND THIRD STREAMS, DETERMINING THE DEPTHS IN THE BOREHOLE OF SAID FIRST AND SECOND NULL POINTS OF FLOW, AND ADJUSTING THE RATES OF FLOW OF EACH OF THE STREAMS WHILE MAINTAINING CONSTANT THE SUM OF THE FLOW RATES OF THE THREE STREAMS SO THAT THE FIRST NULL POINT OF FLOW IS POSITIONED AT ONE OF THE LIMITS OF THE VERTICAL INTERVAL OF SUBSURFACEA STRATA AND THE SECOND NULL POINT OF FLOW IS POSITIONED AT THE OTHER LIMIT OF SAID VERTICAL INTERVAL.
References Cited (Backward Citations)
US2443680A
Cited
US2540049A
Cited
US2599975A
Cited
US2869642A
Cited
US2991883A
Cited
US3040813A
Cited
US3021426A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-03 | 1967-09-02 | 1968-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-03 | 1971-09-02 | 1972-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-03 | 1975-09-02 | 1976-03-03 | $7700.00 | Window Closed / Lapsed |