A deep hole comprehensive guarantee method and equipment for geological exploration

Abstract

The invention relates to the field of hydrogeological survey, and specifically discloses a deep hole comprehensive guarantee method and equipment for geological exploration, including thick-walled casing, drill pipe, drill bit, auxiliary traction module, cleaning and limiting module, and processing module. The auxiliary traction The module is used to pull the thick-walled casing while moving while the drill bit is reaming, and the clearing restriction module is used to move the unstable rock when the auxiliary traction module drives the thick-walled casing through the loose rock wall of the deep hole. Scraping, the processing module is used to break the rocks scraped off by the cleaning and limiting module into rock powder to avoid the accumulation of rocks at the bottom of the deep hole, the auxiliary traction module includes a movable collar and an electric push rod, the drill The rod is located at the inner center of the thick-walled casing. The invention drives the thick-walled casing into the deep hole through the auxiliary traction module provided, which can provide support for the hole wall in time, and also provides downward pulling force at the bottom, which can reduce the impact of hammering the casing above. Strength.

Description

technical field [0001] The invention relates to the technical field of geological exploration, in particular to a deep hole comprehensive guarantee method and equipment for geological exploration. Background technique [0002] Exploration of the alpine and canyon area, the geology of this area has thick gravel layers, there will be more boulders, obvious overhead, loose structure, and complex geological stratification. In recent years, casing and pipe are often used in surveys. The thin-walled casing needs to be used for the casing drill bit and the pipe. However, as the length of the follow-up casing in the deep hole increases, the torque gradually increases, which can easily lead to the casing breakage. Thick-walled casing is used. The drilling cost generated by the wall protection process is much lower than that of the thin-walled casing wall, and the stress can be higher. The outer diameter of the drill bit is slightly larger, and the casing cannot be followed up. There...

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Problems solved by technology

[0003] However, due to the obvious geological overhead and loose structure in the alpine and canyon areas, the rock blocks on the rock wall may loosen in the deep hole after reaming, which will prevent the casing from moving downward in the deep hole. If the casing is hammered continuously, the The casing is subjected to excessive stress, which leads to distortion, which affects the protection effect of the deep hole. In addition, rocks loosen and fall into the bottom of the deep hole. If this cannot be dealt with, it will affect the continued drilling of the deep hole. For this reason, We propose a deep hole comprehensive guarantee method and equipment for geological exploration

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