Salinization exploring tube for hydrographic surveying

Abstract

The invention relates to a salinization exploring tube for hydrographic surveying. The salinization exploring tube comprises a salinization pipe, a flow regulator arranged at the upper end inside thesalinization pipe, a measuring part arranged at the upper end of the salinization pipe in threaded connection, and a connector arranged at the upper end of the measuring part. The salinization pipe isa cylindrical pipe body with an open upper end and a sealed bottom; and through holes are formed in the pipe wall of the salinization pipe uniformly. A long hole is formed in the measuring part; nylon poses are arranged at the two ends of the long hole respectively; and lead electrodes are arranged at the nylon posts respectively. According to the invention, the salinization pipe is arranged forsalinization; the salinization speed is adjusted by using the flow regulator, so that the well liquid salinization of the measuring segment becomes uniform and the detection accuracy is improved; withthe long hole of the measuring part, the well liquid floes between electrodes; and the electrodes and the measuring part are isolated and insulated with each other by the nylon posts, the space around the electrodes is coated with the large-size nylon material being the good insulating material, and the relative distance is small, so that the influence on well liquid measurement after salinization by the wall rock in the well is minimized during well logging.

Description

technical field [0001] The invention relates to the field of hydrological detection equipment, in particular to a salinization probe for hydrological measurement. Background technique [0002] In modern logging construction, hydrological logging often requires salinization diffusion logging, but there has never been a mature and fixed downhole probe device. Some salinization methods directly inject salt into the well, and some directly tie the salt to the cable to go up and down the well. However, the effect of salinization is not good, and it often does not reach the bottom of the well, and there is no salt. Well logging downhole instruments directly use well fluid resistivity probes, but the original well fluid resistivity probes are easily affected by downhole surrounding rocks, and some existing methods have failed to obtain good detection results. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a hydrologic...

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Problems solved by technology

[0002] In modern logging construction, hydrological logging often requires salinization diffusion logging, but there has never been a mature and fixed downhole probe device. Some salinization methods directly inject salt into the well, and some directly tie the salt to the cable to go up and down the well. However, the salinization effect is not good, and it often does not reach the bottom of the well, and there is no salt.

Well logging downhole instruments directly use well fluid resistivity probes, but the original well fluid resistivity probes are easily affected by the surrounding rock in the well, and some existing methods have failed to obtain good detection results

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