Brine drilling and exploiting system and method for dynamic cleaning and salt deposition resisting in closed cycle mode

Abstract

The invention discloses a brine drilling and exploiting system and a method for dynamic cleaning and salt deposition resisting in a closed cycle mode. The drilling system comprises a brine exploiting well (1), a brine diving electromotor (2), a screening pipe (3), a brine diving pump (4), a well inner pipe (5), a well opening pipe fixing steel channel (6) and a well opening pipe (7). A salt resisting brine mud fixing well table (15) and a well lid steel plate (16) are arranged at a well opening, and a support lifting device (17) for overhauling a brine sucking device is arranged on the upper portion of the well lid steel plate (16). The screening pipe (3) is located on the inner side of the bottom well wall of the brine exploiting well (1). The well opening pipe (7) is located at the position, close to the inner side of the well wall, of the salt resisting brine mud fixing well table (15), and the #-shaped well opening pipe fixing steel channel (6) is welded to the position below the well opening pipe. The brine diving pump (4) is fixedly arranged at the position with a certain depth in a well, and a fresh water pipe (8) extends into the well from the ground. A closed cycle dynamic cleaning method is adopted, deposited salt at an impeller and a runner can be dissolved through passing fresh water or lose adhesive force and is finally discharged from a water outlet pipe (9) to be discharged together with collected brine, and therefore stable exploitation of high-concentration and supersaturation brine in the deep portion can be achieved.

Description

technical field [0001] The invention belongs to the technical field of brine mining, and relates to a drilling and mining system for high-salinity, supersaturated brine in the deep part of a salt lake and an anti-salt formation process. Background technique [0002] Most of the salt lake resources in my country are exploited underground brine deposits, which mostly occur in the pores of salt deposits and exist in the form of intercrystalline brine or pore brine. The mining methods of brine mines mainly include channel mining, drilling and mining. The way of combining canals, with the increasing depth of brine mining, simple channel mining needs to continuously increase the depth of canal excavation to meet the needs of pumping stations, but the current construction machinery in the world cannot meet the brine depth of more than 20 meters. Therefore, when the depth of brine mining exceeds a certain limit value, the advantages of drilling brine will be revealed. By constructing ...

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Problems solved by technology

[0002] Most of the salt lake resources in my country are exploited underground brine deposits, which mostly occur in the pores of salt deposits and exist in the form of intercrystalline brine or pore brine. The mining methods of brine mines mainly include channel mining, drilling and mining. The way of combining canals, with the increasing depth of brine mining, simple channel mining needs to continuously increase the depth of canal excavation to meet the needs of pumping stations, but the current construction machinery in the world cannot meet the brine depth of more than 20 meters. Therefore, when the depth of brine mining exceeds a certain limit value, the advantages of drilling brine will be revealed. By constructing a certain depth and diameter of brine mining in the mining area well, and with special production equipment such as submersible pumps and motors, it is possible to continuously and stably mine brine mines with a drawdown below 20 meters

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