Electromagnetic fisher for horizontal well

Abstract

The invention relates to the field of underground mechanical equipment, in particular to an electromagnetic fisher for a horizontal well. An electromagnetic fisher for a horizontal well comprises an electromagnetic assembly, a material collecting piece and a material pushing assembly. The electromagnetic assembly comprises an outer cylinder, an excitation iron core and a power supply unit. The excitation iron core extends in the axis direction of the outer cylinder and is contained in the outer cylinder, the excitation iron core is electrically connected with the power supply unit, and the excitation iron core is used for forming a magnetic field for adsorbing metal materials in an electric conduction state; the material collecting piece is connected with the outer barrel body and is used for adsorbing metal materials; the material pushing assembly is connected with the outer cylinder body; the material collecting piece and the material pushing assembly are distributed at the two ends of the outer barrel in the axis direction of the outer barrel. The material pushing assembly is used for pushing the metal materials adsorbed by the excitation iron core into the material collecting piece. According to the electromagnetic fisher for the horizontal well, metal materials can be adsorbed, and the adsorbed metal materials can be concentrated in the material collecting piece and are prevented from falling into the well, so that the adsorption capacity can be increased, and the adsorption efficiency is improved.

Description

technical field [0001] The present application relates to the field of downhole mechanical equipment, and in particular, to an electromagnetic fisher for horizontal wells. Background technique [0002] With the people's growing demand for high-quality life, the society's demand for energy is increasing, but at the same time, the difficulty of mining fossil energy has also increased with more severe geological, storage, production and safety conditions. For example, the drilling process in the process of mining oil and natural gas resources on land also puts forward higher requirements. The drilling process often needs to consider the drilling technology of horizontal wells and ultra-deep wells. During the drilling process, metal debris and small metal parts are often generated. Or a large number of metal falling objects are suspended or deposited in the well. If the salvage and cleaning are not carried out in time, the instruments or tools placed in the well will be damaged....

AI Technical Summary

Problems solved by technology

[0002] Along with the people's growing demand for high-quality life, the society's demand for energy is increasing, but at the same time, the difficulty of mining fossil energy has also increased with more stringent geological, storage, production and safety conditions. For example, the drilling technology in the exploitation of oil and natural gas resources on land also puts forward higher requirements. The drilling technology often needs to consider the drilling technology of horizontal wells and ultra-deep wells. Metal debris and small metal devices are often produced during the drilling process. Or a large amount of metal debris is suspended or deposited in the well. If it is not salvaged and cleaned up in time, it will damage the instruments or tools that are lowered into the well. In the flat well section, it is necessary to consider where the iron filings and debris are deposited, and to prevent the absorbed debris from colliding with the well wall and falling back into the well. Compared with vertical wells, it is more difficult to salvage debris

[0003] However, in the prior art, when the horizontal well is salvaged, there is a small amount of salvage, a small adsorption force, and it is easy to drop, and the salvage efficiency is low.

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