US3209588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for logging boreholes with formation testing fluids
Assignee: ExxonMobil Upstream Research Co
•
Filing: 1961-03-03
•
Granted: 1965-10-05
•
Expires: 1981-03-03
Abstract
No abstract record available.
Inventors
- 👤 Melvin C Terry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:43
CPC Classifications
E; E21; E21B; E21B49/00; E21B49/08; E21B49/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A METHOD FOR THE EXPLORATION OF MATERIALS IN EARTH FORMATIONS TRAVERSED BY A BOREHOLE ON THE SIDES OF WHICH MUDCAKE HAS FORMED, COMPRISING THE STEPS OF: ISOLATING AN AREA OF THE BOREHOLE WALL INCLUDING ANY MUDCAKE ADJACENT THERETO, SELECTIVELY PRODUCING A PRESSURE ON THE ISOLATED AREA OF THE BOREHOLE WALL THAT IS LESS THAN THE PRESSURE OF FLUIDS IN THE EARTH FORMATIONS ADJACENT SAID AREA TO CAUSE THE FLUIDS PRESENT IN THE EARTH FORMATIONS ADJACENT THE ISOLATED AREA OF THE BOREHOLE WALL AND INTO AN AREA SAID ISOLATED AREA OF THE BOREHOLE WALL AND INTO AN AREA REMOVED FROM SAID ISOLATED AREA, INTRODUCING AFTER REMOVAL OF SAID MUDCAKE AN AGENT CAPABLE OF AFFECTING A CHARACTERISTIC OF THE MATERIALS IN THE EARTH FORMATIONS INTO A SPACE CONTIGUOUS WITH EXPOSED PORTIONS OF SAID EARTH FORMATIONS IN THE ISOLATED AREA OF THE BOREHOLE WALL AT A PRESSURE AT LEAST EQUAL TO THE PRESSURE OF THE FLUID PRESENT IN THE EARTH FORMATIONS, AND DETECTING AND CHARACTERISTIC OF SAID MATERIALS AFTER EXPOSURE TO SAID AGENT.
Claim 2
Independent Claim
170 words
A METHOD FOR THE EXPLORATION OF MATERIALS IN EARTH FORMATIONS TRAVERSED BY A BOREHOLE ON THE SIDES OF WHICH MUDCAKE HAS FORMED, COMPRISING THE STEPS OF: ISOLATING AN AREA OF THE BOREHOLE WALL INCLUDING ANY MUDCAKE ADJACENT THERETO, SELECTIVELY PRODUCING A PRESSURE ON THE ISOLATED AREA OF THE BOREHOLE WALL THAT IS LESS THAN THE PRESSURE OF FLUIDS IN THE EARTH FORMATIONS ADJACENT SAID AREA TO CAUSE THE FLUIDS PRESENT IN THE EARTH FORMATIONS ADJACENT THE ISOLATED AREA OF THE BOREHOLE WALL AND INTO AN AREA SAID ISOLATED AREA OF THE BOREHOLE WALL AND INTO AN AREA REMOVED FROM SAID ISOLATED AREA, INTRODUCING AFTER REMOVAL OF SAID MUDCAKE AN AGENT CAPABLE OF AFFECTING A CHARACTERISTIC OF THE MATERIALS IN THE EARTH FORMATIONS INTO A SPACE CONTIGUOUS WITH EXPOSED PORTIONS OF SAID EARTH FORMATIONS IN THE ISOLATED AREA OF THE BOREHOLE WALL AT A PRESSURE AT LEAST EQUAL TO THE PRESSURE OF THE FLUID PRESENT IN THE EARTH FORMATIONS, AND DETECTING AND CHARACTERISTIC OF SAID MATERIALS AFTER EXPOSURE TO SAID AGENT.
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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |