EQUIPMENT FOR WELL LOGGING AND SAMPLING Russian patent published in 2024 - IPC E21B49/08 E21B47/12 

FIELD: oil industry.

SUBSTANCE: used for hydrodynamic logging, formation evaluation and sampling. Equipment for hydrodynamic logging of wells and sampling of formation fluid contains a power unit, including an adapter with an electromechanical drive, a rod rigidly connected to this drive with the possibility of vertical movement, a packer module consisting of an upper and lower packer, a pump having a suction and discharge channels, located in the fluid pumping unit, a quality control system for the pumped fluid, including a pressure sensor, moisture meter and resistivity meter, a sampling unit with channels connected to the interpacker space, pistons and an emergency unit. The power unit houses a hydraulic system in which pressure is created under the influence of this rod, containing a piston with a pusher, pressed by a spring, acting on the limit switch. The emergency unit is connected by a channel to the hydraulic system and consists of an excess pressure relief chamber, cut off from the hydraulic system by an electromagnetic valve. The excess pressure relief chamber consists of a cylinder with a piston located inside, which in turn is pressed by a spring. In the packer module, the packers are located in the upper and lower sealing units, each of which contains a housing, a sealing nut installed above the upper and lower packer, and a pressure washer that acts on the packer by creating pressure using a group of two-stage pistons, the supra-piston cavities of which are connected by a channel, passing in transit through a fluid pumping unit located between the upper and lower sealing units, with a hydraulic system located in the power unit. The quality control system for the pumped fluid is located in the fluid pumping unit in the channel connecting the interpacker space of the well with the sampling unit through the valve. The sampling block contains a system for washing the channels before sampling, connected through a spring-loaded valve to the sampler channel, and also connected by channels to the packer space. The fluid discharge channel is connected to the packer space through a spring-loaded valve.

EFFECT: providing a modular design, as well as increasing the reliability of the device.

5 cl, 5 dwg