A deep hole comprehensive guarantee method and equipment for geological exploration

A comprehensive guarantee and geological exploration technology, applied in drilling equipment and methods, drilling equipment, earthwork drilling, etc., can solve the problems of large casing stress, distortion, loose structure, etc., and achieve the effect of avoiding collapse

Active Publication Date: 2022-06-07
山东省鲁南地质工程勘察院(山东省地质矿产勘查开发局第二地质大队)
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AI Technical Summary

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

Method used

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  • A deep hole comprehensive guarantee method and equipment for geological exploration
  • A deep hole comprehensive guarantee method and equipment for geological exploration
  • A deep hole comprehensive guarantee method and equipment for geological exploration

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Embodiment 1

[0031] like Figure 1-3 As shown, a deep hole comprehensive guarantee method for geological exploration includes the following steps:

[0032] Step 1: Fix the drilling rig on the ground above the geology to be tested, start the drilling rig to drive the drill pipe 2 to rotate, the drill pipe 2 drives the drill bit 3 to drill a deep hole, and after drilling to a certain depth, the thick-walled casing 1 is hammered. Penetrate deep holes for wall protection;

[0033] Step 2: When encountering boulders during drilling, if the thick-walled casing 1 cannot pass by hammering, start the water pump to input high-pressure water flow into the conveying cavity 7, and push the cutting body 22 out of the V-shaped cavity 4. , until the expanded width of the cutter bodies 22 on both sides of the drill bit 3 is greater than the outer diameter of the thick-walled casing 1, the drill bit 3 continues to rotate to carry out reaming drilling, and an annular gap is drilled between the boulder and t...

Embodiment 2

[0043] like Figure 1-3 As shown, a deep hole comprehensive guarantee method for geological exploration includes the following steps:

[0044] Step 1: Fix the drilling rig on the ground above the geology to be tested, start the drilling rig to drive the drill pipe 2 to rotate, the drill pipe 2 drives the drill bit 3 to drill a deep hole, and after drilling to a certain depth, the thick-walled casing 1 is hammered. Penetrate deep holes for wall protection;

[0045] Step 2: When encountering boulders during drilling, if the thick-walled casing 1 cannot pass by hammering, start the water pump to input high-pressure water flow into the conveying cavity 7, and push the cutting body 22 out of the V-shaped cavity 4. , until the expanded width of the cutter bodies 22 on both sides of the drill bit 3 is greater than the outer diameter of the thick-walled casing 1, the drill bit 3 continues to rotate to carry out reaming drilling, and an annular gap is drilled between the boulder and t...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/20E21B7/28E21B10/32E21B3/00
Inventor 李振生王新杨鑫卿
Owner 山东省鲁南地质工程勘察院(山东省地质矿产勘查开发局第二地质大队)
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