A high-pressure plunger pump skid-mounted device for oilfield water injection

Abstract

The invention relates to the field of oilfield water injection. The purpose is to provide a high-pressure plunger pump skid-mounted device for oil field water injection, including a plunger pump unit fixedly connected to the skid-mounted chassis, a spare plunger pump unit and its adapter pipeline, and an explosion-proof electrical control cabinet; The pipeline includes a liquid inlet pipeline and a liquid outlet pipeline; the liquid inlet pipe is provided with a main liquid inlet valve, a filter, a plunger pump control valve and a low-pressure pneumatic cut-off valve; the plunger pump backup unit and the plunger pump The outlet pipelines of the unit are equipped with high-pressure check valves; the outlet pipes are equipped with pressure transmitters, pressure gauges and first temperature transmitters; the explosion-proof electrical control cabinet is connected to the low-pressure pneumatic cut-off valve and plunger pump unit through wires , The spare unit of the plunger pump, the pressure transmitter, and the first temperature transmitter are connected. The plunger pump skid device has simple structure, low cost, real-time monitoring of pipeline temperature and pressure, convenient and safe provision of high-pressure water injection, and is suitable for places where water injection is required in some oil fields.

Description

technical field [0001] The invention relates to the field of oilfield water injection, in particular to a high-pressure plunger pump skid-mounted device for oilfield water injection. Background technique [0002] After the oil field is put into development, with the increase of production time, the energy of the oil layer itself will be continuously consumed, resulting in a continuous drop in the pressure of the oil layer, a large amount of degassing of the underground crude oil, an increase in the viscosity, a great reduction in the production of the oil well, and even the stop of spraying and production, resulting in underground A large amount of dead oil remains and cannot be recovered. In order to make up for the underground deficit caused by the extraction of crude oil, maintain or increase the pressure of the reservoir, achieve high and stable oil production, and obtain a high recovery rate, it is necessary to inject water into the oil field. For large-scale oilfield ...

AI Technical Summary

Problems solved by technology

Due to the high pressure and water quality requirements for water injection, scattered oilfield surface engineering, less environmental damage, and convenient traffic requirements, the prefabricated house has many defects such as more consumables, low utilization rate, difficult disassembly, and long construction period.

In addition, the oil field is often faced with a high temperature and high pressure working environment during the mining process. The plunger pump will have defects such as loud noise and easy failure after working for a long time, which will affect the work progress; and the pressure and temperature instruments of the existing prefabricated houses require manpower for a long time. Check, the valve cannot be quickly controlled when a dangerous situation occurs, and the function of early warning and response to the dangerous situation is lacking

And because the medium pressure required for water injection is high, the vibration reduction and filtration of the equipment are difficult problems

These problems lead to unstable or unsafe operation of the equipment

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