FIELD: engineering industry; pump equipment.
SUBSTANCE: blast-hole fluidic unit contains mounted packer and ejector pump on flexible plain pipe. Ejector pump diffuser output connected to the plane pipe through the lateral channel of environment mixture in the ejector frame. Ejector nipple is connected to the hole clearance of packer. Pumping substance feed channel of ejector is connected to the plane pipe through the upper and down port of the ejector's frame. Pumping substance feed channel is provided with check valve. Ejector's frame is provided with operating environment flow switch in the form of flexible steady bush spring-assisted relative to the frame. Bush is fulfilled by the thrust flange, located in the housing boring with ring channel which is connected to the hole clearance by the channel in the ejector's frame. Bush is provided with drain ports and seat for encapsulated assembly drained through the packer. In up bush position the channel output of environment mixture and pumping substance feed channel are closed off by the latter. In down position the upper bush end is located below the channel output of the mixture. Drain ports are connected with the input of pumping substance feed channel. Encapsulated assembly is made in the form of step-type cylindrical body. Seal element is located at the top of the body, and encapsulated assembly step piston is located at the bottom of the body. Step piston is spring-mounted relative to the seal element. Encapsulated assembly frame walls are fulfilled by the holes overlapped by the step piston in its bottom position. In up position of the step piston and down position of the bush pumping substance feed channel is connected above the check valve with the plane pipe below the ejector's frame. Bottom drain ports of the bush are connected with the bottom port of pumping substance feed channel. Step piston and seal element are fulfilled by the channels for hoist cable drafting with the head for connection to the hoist device. Plain pipe below the packer is provided with encapsulated component in the form of graded ring. The plane pipe walls above the hoist device have the holes for connection with hole clearance below the packer. Casing string is provided with base ring with step bore for encapsulated component installation.
EFFECT: work reliability growth and performance efficiency of the blast-hole fluidic unit while processing the producing formation of horizontal well.
3 dwg
