Magnetic salvaging device for salvaging small falling objects in petroleum well

A salvage device and technology for oil wells, applied in the field of salvage devices and magnetic salvage devices, can solve problems such as not easy to slip, easy to slip, and difficult to salvage small pieces in the well

Active Publication Date: 2021-05-11
大庆市奈固石油机械设备制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Magnetic salvaging device for salvaging small falling objects in petroleum well
  • Magnetic salvaging device for salvaging small falling objects in petroleum well
  • Magnetic salvaging device for salvaging small falling objects in petroleum well

Examples

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Embodiment 1

[0024] like Figure 1-Figure 3 As shown, the present invention provides a magnetic fishing device for fishing small debris in an oil well, comprising an upper joint 1, a housing 2, milling shoes 3 and fishing equipment 4, the bottom of the upper joint 1 and the top of the housing 2 move Connection, the inner wall of the housing 2 is fixedly connected with the outer wall of the milling shoe 3, the bottom of the milling shoe 3 is movably connected with the top of the salvage device 4, the inside of the milling shoe 3 is provided with a through groove 31, and the salvage device 4 includes salvage parts 41 and a stay cord 42, the bottom of the stay cord 42 is fixedly connected to the top of the salvage part 41, the salvage part 41 includes an outer hook bar 411 and a magnetic attraction part 412, and the outer wall of the outer hook bar 411 is slidably connected with the inner wall of the milling shoe 3, The inner wall of the outer hook bar 411 is slidingly connected with the inne...

Embodiment 2

[0027] like Figure 3-5 As shown, on the basis of Embodiment 1, the present invention provides a technical solution: the magnetic attraction part 412 includes a strong magnet b1, a plate hook b2, a swing part b3 and a magnetic sleeve b5, and the inside of the magnetic sleeve b5 is fixedly connected with a strong magnet b1, the bottom ends of both sides of the magnetic sleeve b5 are provided with a swing piece b3, and the outer walls of both sides of the magnetic sleeve b5 are symmetrically provided with several plate hooks b2, and the top of the magnetic sleeve b5 is rotatably connected with a rotating ball b4, and the two sides of the rotating ball b4 The sliding rod b6 is movably connected, the two ends of the sliding rod b6 are slidingly connected with the inner wall of the through groove 31, and the two sides of the bottom end of the through groove 31 are rotationally connected with a rebound net 311, and the swinging part b3 includes a swinging bar c1 and a magnetic core i...

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PUM

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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...

Claims

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Application Information

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IPC IPC(8): E21B31/06
CPCE21B31/06Y02A20/204
Inventor 龙正群
Owner 大庆市奈固石油机械设备制造有限公司
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