Logging type measurement system for horizontal well, has two closing units limiting circulation of fluid inside rods in raising direction, where one closing unit is open, when electrical connection is formed

摘要

The system has probes (2) fixed to a probe support (3) that is assembled at a lower end of a rod fitting (12). A closing unit (20) is provided near the lower end of the rod fitting and another closing unit (21) is provided above a side entry sub (8). The closing units e.g. flapper valves, limit the circulation of fluid inside the rods in a raising direction, where the closing unit (20) is open, when electrical connection is formed. An independent claim is also included for a measurement method in a well.