Deep hole comprehensive guarantee method and equipment for geological exploration

A technology for comprehensive protection and geological exploration, applied in drilling equipment and methods, drilling equipment, earthwork drilling, etc., can solve the problems of large casing stress, affecting the protection effect of deep holes, distortion, etc., and achieve the effect of avoiding collapse

Active Publication Date: 2022-04-15
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, ...

Method used

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  • Deep hole comprehensive guarantee method and equipment for geological exploration
  • Deep hole comprehensive guarantee method and equipment for geological exploration
  • Deep hole comprehensive guarantee method and equipment for geological exploration

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Embodiment 1

[0031] Such as Figure 1-3 As shown, a deep hole comprehensive guarantee method for geological exploration, comprising 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, and the drill pipe 2 drives the drill bit 3 to drill a deep hole. After drilling to a certain depth, hammer the thick-walled casing 1 Penetrating deep holes for retaining walls;

[0033] Step 2: When a boulder is encountered during drilling, if the thick-walled casing 1 cannot pass through by hammering, start the water pump to input high-pressure water flow into the delivery chamber 7, and push the cutting tool body 22 out of the V-shaped cavity 4 , until the expanded width of the cutting body 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 for reaming drilling, and an annular gap is drilled between the boulde...

Embodiment 2

[0043] Such as Figure 1-3 As shown, a deep hole comprehensive guarantee method for geological exploration comprises 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, and the drill pipe 2 drives the drill bit 3 to drill a deep hole. After drilling to a certain depth, hammer the thick-walled casing 1 Penetrating deep holes for retaining walls;

[0045] Step 2: When a boulder is encountered during drilling, if the thick-walled casing 1 cannot pass through by hammering, start the water pump to input high-pressure water flow into the delivery chamber 7, and push the cutting tool body 22 out of the V-shaped cavity 4 , until the expanded width of the cutting body 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 for reaming drilling, and an annular gap is drilled between the boulder ...

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Abstract

The invention relates to the field of hydrogeological survey, and particularly discloses a deep hole comprehensive guarantee method and equipment for geological prospecting, the deep hole comprehensive guarantee equipment comprises a thick-wall casing, a drill rod, a drill bit, an auxiliary traction module, a cleaning limiting module and a processing module, the auxiliary traction module is used for pulling the thick-wall casing to move at the same time in the reaming and drilling process of the drill bit, and the processing module is used for processing the thick-wall casing. The cleaning limiting module is used for scraping off unstable rock blocks when the auxiliary traction module drives the thick-wall casing pipe to pass through a loose deep hole rock wall, the processing module is used for smashing the rock blocks scraped off by the cleaning limiting module into rock powder to prevent the rock blocks from being stacked at the bottom of a deep hole, and the auxiliary traction module comprises a movable lantern ring and an electric push rod. The drill rod is located at the circle center of the interior of the thick-wall sleeve. The auxiliary traction module is arranged to drive the thick-wall casing pipe to enter a deep hole while reaming is conducted, the hole wall can be supported in time, in addition, downward pulling force is provided at the bottom, and the force for hammering the casing pipe on the upper portion can be reduced.

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] Prospecting in alpine and canyon areas, there are thick pebbles and gravel layers in the geology of this area, there will be more boulders distributed, obvious overhead, loose structure, and complicated geological stratification. In recent years, casing and pipe are often used in the survey When drilling deep holes in the same way, the casing bit and the pipe need to use a thin-walled casing, but as the length of the follow-up casing in the deep hole increases, the torque will gradually increase, which will easily cause the casing to break, while using a thick-walled casing The drilling cost generated by the retaining wall process is much lower than that of the thin-walled casing retaining wall, and the stress it can withstand is greater. The outer di...

Claims

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Application Information

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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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