US2760079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well or bore hole logging
Assignee: Individual
•
Filing: 1951-06-25
•
Granted: 1956-08-21
•
Expires: 1971-06-25
Abstract
No abstract record available.
Inventors
- 👤 Arps Jan Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:22
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A METHOD OF LOGGING AN EARTH BOREHOLE WHICH COMPRISES: INJECTING A FLUID CARRYING RADIOACTIVE TRACER MATERIAL INTO THE BOREHOLE UNDER SUFFICIENT PRESSURE TO FORCE A PORTION THEREOF INTO THE PENETRATED POROUS FORMATIONS SURROUNDING SAID BOREHOLD; RUNNING A FIRST RADIOACTIVITY WELL LOG IN SAID BOREHOLE; WAITING A TIME INTERVAL THEREAFTER SUFFICIENT TO PERMIT A MEASURABLE DECAY IN THE RADIOACTIVITY OF THE TRACER MATERIAL THEREIN; AND THEN RUNNING A SECOND RADIOACTIVITY WELL LOG IN SAID BOREHOLE, TO OBTAIN BY COMPARISON OF SUCH LOGS INFORMATION REGARDING CHARACTERISTICS OF THE SAID FORMATIONS.
Claim 2
Independent Claim
88 words
A METHOD OF LOGGING AN EARTH BOREHOLE WHICH COMPRISES: INJECTING A FLUID CARRYING RADIOACTIVE TRACER MATERIAL INTO THE BOREHOLE UNDER SUFFICIENT PRESSURE TO FORCE A PORTION THEREOF INTO THE PENETRATED POROUS FORMATIONS SURROUNDING SAID BOREHOLD; RUNNING A FIRST RADIOACTIVITY WELL LOG IN SAID BOREHOLE; WAITING A TIME INTERVAL THEREAFTER SUFFICIENT TO PERMIT A MEASURABLE DECAY IN THE RADIOACTIVITY OF THE TRACER MATERIAL THEREIN; AND THEN RUNNING A SECOND RADIOACTIVITY WELL LOG IN SAID BOREHOLE, TO OBTAIN BY COMPARISON OF SUCH LOGS INFORMATION REGARDING CHARACTERISTICS OF THE SAID FORMATIONS.
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) | 1959-08-21 | 1960-02-20 | 1960-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-21 | 1964-02-20 | 1964-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-21 | 1968-02-20 | 1968-08-21 | $7700.00 | Window Closed / Lapsed |