RU35389U1 - Pit pumping unit for water injection into the reservoir - Google Patents

Description

Shurfnaya .. „. pumping unit for injection

water into the reservoir.

The utility model relates to pump engineering and can be used to pump water into the reservoir in the system for maintaining reservoir pressure in oil fields.

A horizontal pumping unit for pumping water into a formation is known, including an electric motor connected by means of couplings with two opposite centrifugal pumps, the suction and discharge pipes of which are connected to each other by a pipeline, the installation is mounted on a support frame with pedestals and sealed with mechanical seals. (RF patent 2142067,27.11.99)

Installation of these installations in the field is difficult due to the large overall dimensions and the complexity of the design of the support frame. Also known is a horizontal pumping unit for pumping water into the reservoir, made in the form of a driven electric motor mounted on a support frame and connected to it by means of a sectional centrifugal pump coupling, the suction unit of which is placed with it on a common shaft and equipped with radial bearings and mechanical seals. The discharge pipe is combined with the last pump section. (RF patent 2162163, 01.20.2001)

When the centrifugal pump is located horizontally, additional sections can be docked in order to increase the pressure only if the corresponding support frames are mounted at the wellhead. Therefore, these facilities cannot be used in a reservoir pressure maintenance system with limited fishing areas.

The technical task of the utility model is to create a plant that provides a pressure range of 1100-2600 m. Without increasing the axial dimension.

This task is achieved by the fact that in the installation for pumping water into the reservoir containing a drive motor, a sectional centrifugal pump, a suction and discharge nozzles, an input module and a pump frame, according to the proposed technical solution, the drive motor is installed on the wellhead and

equipped with an under-engine frame rigidly articulated with the pump frame, the centrifugal sectional pump is mounted vertically in a pit. An output module is installed in the head of the lower section of the pump, made in the form of a branch pipe with a check valve and a pressure pipe attached to it. The pit installation for injecting water into the formation contains an electric motor 1 mounted on the pit mouth 2 by means of an under-motor frame 3. A centrifugal sectional pump 4 is mounted vertically by means of a frame 5. The shafts of the electric motor 1 and pump 4 are articulated with a shaft of an input module 6 for supplying water from the inlet line 7 to the pump 4. The pressure pipe 8 is connected through the pipe 9 to the head 10 of the lower section of the pump 4. The pipe 9 is equipped with a check valve 11, which prevents reverse rotation when the electric odvigatelya.

The pit pumping unit operates as follows. The pumped liquid through the supply line 7 and the input module 6 is fed to the working stages of the pump 4, where it acquires the necessary discharge pressure and is supplied through the pipe 9 and the non-return valve 11 to the pressure pipe 8 and then to the consumer.

Claims (1)

A pit pumping unit for pumping water into a formation containing a drive motor, a sectional centrifugal pump, a suction and discharge nozzles, an input module and a pump frame, characterized in that the drive motor is installed on the pit mouth and is equipped with a motor frame that is rigidly articulated with the pump frame, centrifugal the sectional pump is mounted vertically in a pit, and an output module is installed in the head of the lower section of the pump, made in the form of a branch pipe with a check valve and pressure head connected to it m pipeline.