Clean water deconcentration system for mechanically mined brine

Abstract

The invention discloses a clear water concentration reducing system for machine-collected brine. The system comprises a salt well A and a salt well B, the salt well B is internally provided with a center tube, a water inlet pipeline B is arranged in the salt well B in a communicated mode, the center tube is internally provided with an electric submersible pump, and the discharge end of the electric submersible pump is communicated with a halogen outlet pipeline through a pipeline D; the system further comprises a water injection pipe of the salt well A, the water injection pipe is communicated with the salt well A through a water inlet pipeline A, the water injection pipe is located in front of the water inlet pipeline A of the salt well A and communicated with the salt well B through a pipeline A, a pipeline B and a pipeline C in sequence, and the pipeline C is communicated with the salt well B through the water inlet pipeline B; a valve A is arranged on the pipeline A in a communicated mode, a flowmeter, a pressure gauge A and a valve B are sequentially arranged on the pipeline B in series in a communicated mode, and the valve C and a pressure gauge B are sequentially arranged on the pipeline D in series in a communicated mode. In this way, by means of the pipeline system, clear water concentration reducing on the salt well B can be achieved, the continuous production time of the salt well B can be greatly prolonged, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the field of brine mining in salt wells, in particular to a clear water concentration reduction system for mechanically mining brine. Background technique [0002] In well mine salt mining, the water-soluble method of horizontally connected well groups is currently the main mining method. When the well group is in normal production, if the average content of sodium chloride in the brine exceeds 300g / l, salt crystallization and pipe plugging will easily occur. Exchange water injection is usually used direction to resolve. Mechanical brine extraction is to install an electric submersible pump at the brine extraction end of the connected well group to increase the lifting pressure. It is mainly used for well groups with low production-injection ratio and low production efficiency. When the pump brine was originally designed, no clear water concentration reduction system was designed. If salt crystallization occurs during brine mi...

AI Technical Summary

Problems solved by technology

After the completion of the Suyan 15 downhole pump, during the trial operation, the electric pump had the problem of under-load shutdown for many times and could not achieve continuous operation. After backwashing the pump with clean water, it can be restarted to run again. The longest running time is 10 hours, and the shortest is 3 hours. It means that although the brine can be extracted by using the electric submersible pump, it cannot run continuously due to the problem of rapid crystallization and pipe plugging, which limits the operability of purely using the electric submersible pump to extract brine, and will not be able to be put into production

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