Multiple chamber earth formation fluid sampler
Abstract
Abstract A MULTIPLE CHAMBER SAMPLING SYSTEM FOR OBTAINING FLUID SAMPLES FROM EARTH FORMATIONS WHEREIN A BOREHOLE EXPLORING UNIT SUPPORTED FOR MOVEMENT THROUGH THE BOREHOLE IS PROVIDED WITH SPACED MEANS FOR ISOLATING BOREHOLE WALL FORMATION PORTIONS FROM BOREHOLE FLUIDS. A FLOW CHANNEL SELECTIVELY INTERCONNECTS THE ISOLATION MEANS AND HAS A PUMP THEREIN FOR PRODUCING FLUID FLOW FROM THE FORMATION THROUGH THE FLOW CHANNEL BACK INTO THE FORMATION. ENGAGING UNITS CONTACT THE FORMATIONS AND FLUID THEREIN IS PUMPED FROM ONE FORMATION TO ANOTHER OR FROM ONE PORTION OF A FORMATION TO ANOTHER PORTION OF THE SAME FORMATION. A SET OF VALVES CONTROLLABLE FROM THE SURFACES PROVIDES MEANS FOR FILLING THE MULTIPLE SAMPLING CHAMBERS AND TRANSDUCERS PROVIDE INDICATIONS OF VARIOUS PHYSICAL CHARACTERISTICS OF THE FLUID. MEANS ARE PROVIDED FOR DETERMINING THE EXPLORING UNIT''S DEPTH IN THE BOREHOLE.
Inventors
- 👤 Mike Davis
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |