Automatic deviation rectifying device for hydraulic drill

Abstract

The invention discloses an automatic deviation rectifying device for a hydraulic drill. The automatic deviation rectifying device for the hydraulic drill comprises an inner rod, an outer sleeve, a hydraulic system and a Bluetooth module; and the inner rod comprises a specially-made inner rod body and a drill pipe adapter, the specially-made inner rod body is hollow and is connected with the drillpipe adapter, an eccentric annular groove is dug in the specially-made inner rod body, and a rod part of which one end is provided with a cylinder is embedded into the groove. According to the automatic deviation rectifying device for the hydraulic drill, the deviation rectifying force is provided by a hydraulic device, micro hydraulic cylinders are arranged on the circumference in the four directions respectively, and the centering property of a drill pipe column is guaranteed after deviation rectifying; and in addition, deviation rectifying control is conducted by adopting a Bluetooth data transmission mode, therefore, deviation rectifying operation can be quickly and efficiently achieved, and operation is greatly convenient for coal underground working personnel.

Description

technical field [0001] The invention relates to the field of drilling, in particular to an automatic deviation correction device for hydraulic drilling. Background technique [0002] Wellbore deviation, also known as well deviation, has great harm to underground construction work, making the bottom of the well unable to reach the predetermined point, affecting wellbore ventilation, drainage and energy extraction effects, reducing drilling efficiency, and delaying construction progress. Well deviation is due to the deviation of the drill bit, which causes the wellbore to deviate from the originally designed path, resulting in deviation. There are two main reasons for the skew of the drill bit: first, due to the geological environment, the change of the rock formation or the uneven hardness of the rock in the rock formation cause the unbalanced force on the drill bit, resulting in the skew of the drill bit; second, the drill tool is in long-term work. The drill pipe twists an...

AI Technical Summary

Problems solved by technology

Due to various factors, the drill bit does not perform drilling work according to the preset path, which will have a negative impact on underground construction and even cause damage to subsequent projects

The main impacts are as follows: due to the occurrence of well deviation, the drilled wellbore will be unusable, or the geological data will be deviated, which will disrupt the layout of the wellbore and affect the progress of later projects; if the well deviation is too large, It will cause the bottom of the well to deviate from the target position, increase unnecessary workload, and even encounter underground rivers or gas layers that should not be encountered during the drilling process, resulting in engineering accidents and may also cause construction personnel casualties; As far as the drill bit is concerned, after the well deviation occurs, the force on the drill bit will be uneven, resulting in uneven wear, resulting in damage to the drill bit. In addition, other equipment arranged will be worn or damaged; the well deviation is large, and it will be difficult to run the casing, and the casing will not be centered, which will increase the difficulty of the later cementing work

At the same time, the difficulty of running the casing will also cause a decrease in drilling efficiency and affect the progress of the drilling project; after the wellbore deviates, it will affect the downhole wellholes such as gas drainage holes, drainage holes, ventilation holes, etc., making it impossible to follow the design. The transportation of gas, air and construction water will be carried out regularly, and at the same time, it will cause huge troubles for the wellbore transportation of some transportation equipment.

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