A linkage control method for oilfield water source wells and water supply and injection stations

Abstract

The invention discloses a linkage control method for water source wells and a water supply and injection station of an oil field. The method comprises the following steps that 1, the first water source well is started to supply water to a water storage tank; 2, the second water source well is additionally arranged to supply water to the water storage tank; and 3, the liquid level change of the water storage tank is monitored in real time to increase or decrease water supply of the water source wells. According to the linkage control method, air in a pipe is discharged in advance through an emptying electromagnetic valve on an emptying pipe, and the problem that the back pressure of well mouths of the water source wells is large, and the starting current is too large when an electric submersible pump is started, so that the electric submersible pump cannot be started is solved; the electric submersible pump is controlled through a frequency converter, and thus electricity and energy aresaved; an inclined connecting water pipe and a check valve are matched to accumulate water flow, the air in the pipe is squeezed out, and the pressure in the pipe is reduced; and a three-phase electric parameter acquisition module is used for detecting the fault of the electric submersible pump, a plurality of water source well control units work cooperatively in a linkage mode according to the water level in the water storage tank, and thus the efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of linkage control between an oilfield water source well and a water supply and injection station, and in particular relates to a linkage control method for an oilfield water source well and a water supply and injection station. Background technique [0002] Using water injection equipment to inject qualified water from water injection wells into the oil layer to maintain the pressure of the oil layer, this process is called oilfield water injection. Oilfield water injection is one of the important means to replenish energy to the formation and improve oil recovery in the process of oilfield development. The level of water injection well management technology determines the quality of oilfield development, and also determines the length of oilfield development life. The existing oilfield water source wells and water supply and injection station linkage management is not standardized, well workover on-site su...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a linkage control method between the oilfield water source well and the water supply and injection station in view of the above-mentioned deficiencies in the prior art, which uses the vent solenoid valve on the vent pipe to pre-discharge the air in the pipe to avoid the backflow of the water source well. When the electric submersible pump is started, the starting current is too large, which leads to the problem that the electric submersible pump cannot be started. The frequency converter is used to control the electric submersible pump, which saves electricity and energy. Squeeze the air in the pipe, reduce the pressure in the pipe, use the three-phase electric parameter acquisition module to detect the fault of the electric submersible pump, and the control units of multiple water source wells work together according to the water level in the water storage tank, which has high efficiency and is easy to promote and use

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