Magnetic salvaging device for salvaging small falling objects in petroleum well

Abstract

The invention discloses a magnetic salvaging device for salvaging small falling objects in a petroleum well, and relates to the technical field of petroleum well operation tools, the magnetic salvaging device comprises an upper connector, a shell, a milling shoe and salvaging equipment, outer hook rods are symmetrically arranged at the left end and the right end of a magnetic attraction piece, hook grooves are evenly formed in the inner sides of the outer hook rods, a plurality of plate hooks are symmetrically arranged on the outer walls of the two sides of the magnetic sleeve, and an arc-shaped groove is formed in each swing strip. According to the device, the swinging strips are arranged, irregular arc-shaped grooves in the swinging strips drive magnetic core iron at the tail to swing to magnetically attract surrounding small fragments, the efficiency and quality of petroleum downhole operation are guaranteed, balance can be kept when falling objects incline or move due to friction through the arrangement of a rotating ball, it is guaranteed that the falling objects are not prone to falling. Through the arrangement of the rotatable outer hook rods and the plate hooks, the magnetic attraction piece can be pulled upwards, the outer hook rods are rotated at the same time, the rope is clamped between the hook groove of the outer hook rod and the plate hook, and it is guaranteed that the rope falling object is not prone to falling again.

Description

technical field [0001] The invention relates to a fishing device, and relates to the technical field of oil well operation tools, in particular to a magnetic fishing device for fishing small objects in an oil well. Background technique [0002] Downhole operation is a technical means to ensure the normal production of oil and water wells in the process of oilfield exploration and development. In the process of oil well operation, some small objects will fall into the well. For small strips, sheets and granular pieces Metals (such as drilling and grinding residues, perforation fragments, screws, pins, rubber cylinder fragments, steel wire ropes, etc.) are generally salvaged by a strong magnetic salvage device. Tools for falling objects are mainly used to salvage small pieces of iron falling objects such as drill bit cones, slips, pliers, steel balls, hand tools, tubing or casing fragments that fall into the well. According to the needs of fishing operations, A milling shoe o...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a magnetic fishing device for salvaging small debris in an oil well, one of the purposes of which is to have the beneficial effect of being able to salvage small pieces near the magnetic fishing device, and to solve the problem of small pieces in the well. The problem that the fragments are difficult to salvage; another purpose is to solve the problem that when the small falling objects fall into the oil under the oil well, the oil pipe and the rope will be in a tilted state during the pull-up process, so that it is not easy to pull out and easy to pull out. The problem of slipping is to achieve the effect that after absorbing the falling objects, the falling objects rub against the two sides so that it is not easy to slip off. Another purpose is to have the convenience of securing the rope-like objects when using the magnetic fishing device to salvage the rope-like objects salvaged and not easy to fall

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