Method and apparatus for logging a well below a downhole pump
US5186048A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1990 |
| Grant date | Feb 16, 1993 |
| Priority date | — |
| Expiry date | Sep 13, 2010 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Method and apparatus for logging a formation interval in a well when the fluids are produced therefrom by a downhole pump. The method comprises lowering into the well a tubing (10) carrying a downhole pump (14) and a logging assembly, the logging assembly comprising a support (31) releasably latched in the tubing at an upper position located a predetermined distance above the pump, a cable section (26) attached to the support and passing from the bore of the tubing to the well bore along the pump through a sealed passage (25), and a well logging tool (15) attached at the lower portion of the cable section in a protecting sleeve (28). When the pump is at the correct depth in the well, a cable is passed from the surface through the tubing and connected to the support (31) by means of a wet connector. The support is released from its upper latching position and lowered in the tubing for bringing the logging tool (15) to the formation interval (12). Then, the formation interval can be logged while fluids are pumped out from the interval by the downhole pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.