DEVICE FOR HYDRODYNAMIC INVESTIGATIONS AND TESTING OF WELLS Russian patent published in 2016 - IPC E21B47/00 

FIELD: hydrodynamic research.

SUBSTANCE: invention relates to means for hydrodynamic investigation and tests in well. Device for hydrodynamic research and testing of wells containing suspended on a logging cable via a docking instrument head sealed enclosure, placed in housing gear motor connected to motor spindle drive packer-anchor, rod for load transmission onto anchor packer, balancing valve installed above motor switching and remote downhole tool that is attached to tip of cable head at lower end of housing. Device is further equipped with a second housing mounted below first housing and coupling nuts for attaching said second housing to said first housing. In second housing there is a second electric motor mechanically connected with equalising valve, and a telemetry unit. Also, inside first and second housings in parallel to longitudinal axis of device there is an eccentric channel for routing transit link to telemetry unit. Rod for load transmission to anchor-packer is configured without a central hole, and balance valve sealing member is in form of a cuff.

EFFECT: technical result is high reliability of apparatus and its efficiency by ensuring separation of controlling operation of packer and opening of balancing valve.

1 cl, 2 dwg