CN2168066Y - Permanent fishing device for magnetophilic objects in boreholes - Google Patents

Abstract

The utility model relates to a permanent fishing device for magnetophilic remained objects in drill wells, comprising a magnetic attraction mechanism and a mechanism for water diversion, washing and settling, wherein, the magnetic attraction mechanism comprises an inside inlaid permanent magnet (6) arranged in a shell (2); the top of the permanent magnet is connected with a crash pad (5) and a shielding pad (4), and the bottom is connected with a protective cover (7) via a coupling pin (8). The mechanism for water diversion, washing and settling which is a hollow cylinder provided with water outlets at the side comprises a water diversion pad (3) arranged in the shell (2) and connected with the outer wall of the shell (2) via a connecting handle (1). The strong magnet fishing device adopted to fish the magnetophilic foreign objects fallen in wells has the advantages of convenient suction, time saving and labor saving, reduces production cost and enhances drilling production efficiency.

Description

Permanent fishing device for magnetophilic objects in boreholes

The utility model is a kind of in drilling project, to the instrument of boring in-laws' magnetic " residue " utility model of salvaging.

Creep in the operation in geological drilling, oil, coalfield etc., owing in the drilling process, adopt carbide alloy to creep into, often to go out sword uneven because of the drill bit alloy, when creeping into fractured rock pressurization too quickly, and steel grit creeps into when changing alloy and creeping into, reasons such as remaining steel grit are arranged at the bottom of the hole, make the alloy avalanche.In diamond drilling, because of the burning of bits or careless manipulation fall diamond, carcass burst apart piece and tread ring comes off, and causes and carries the drilling tool clip, destroys drill bit or loses expensive diamond, influences drilling depth, even cuts serious serious accident such as bad drilling tool.In drilling processes such as oil, coalfield, water source, the tricone bit that is adopted often because of bit wear when serious, causes cone shedding, and gear wheel and bearing ball are remained at the bottom of the hole, influences normal drilling depth.Creep into, the lifting drilling tool, overhaul machine or the course of work such as processing accident in, because of the staff careless or careless and inadvertent, small tools, small articles such as wrench, pipe wrench, hand hammer, elevator, fork, slips, bolt, nut are fallen in the hole, if handle accidentally, often cause bit freezing, stick of tool, fall accidents such as drill bit, drill bit is normally crept into and damages in overslaugh.Handled above-mentioned accident, complex process is awkward in the past, and influence is crept into the duration, increases labour intensity, and causes raw-material waste, even because of dealing with improperly, can cause scrapping of boring.And not very good to the accident treatment effect yet, give enterprise and country because of above-mentioned accident and caused immeasurable economic loss every year.

It is strong that the purpose of this utility model provides a kind of magnetic attraction, and never demagnetization can be salvaged with the instrument that falls into by the interior retained foreign body of fast processing boring, and easy to use, effect is obvious, fisher applied widely.

The utility model is realized as follows.The utility model is by magnetic attraction mechanism and divide water to form towards shallow lake mechanism, and magnetic attraction mechanism comprises: permanent magnet 6 is internally-inlaid, and the top is connected with crash roll 5, screen closes pad 4, and permanent magnet is packed in the housing 2 that has weep hole, and the bottom is by connecting bolt 8 connection protective covers 7.Divide water to comprise: to divide water cushion 3 for the side has the hollow cylinder of weep hole, divide water cushion 3 to be contained in the housing 2 that has weep hole, differently be connected with housing 2 outer walls through taking over 1 towards shallow lake mechanism.

The utility model volume is little, in light weight, suction is big, and never loss of excitation, and long service life loads and unloads easyly, and fishing process is simple, and magnetic force is stable, adopts the shielding assembling, and the borehole wall is not produced magnetization.Inhale and take effect good, can inhale simultaneously by alloy.

Be described as follows with reference to the accompanying drawings:

Accompanying drawing is the utility model sectional structure schematic diagram.

Different is the inner cylinder that has bellmouth through taking over 1, and outer wall has screw thread, different size and shape and drilling rod coupling through the catcher internal tapered hole.Dividing water cushion 3 is hollow cylinder, and sidewall has weep hole, and screen closes pad 4 and crash roll 5 is non-close magnetisable material.Permanent magnet 6 adopts up-to-date in the world third generation Nd-Fe-B permanent-magnet material; be the internally-inlaid magnetic core; use non-close magnetisable material to shield and close with shockproof, magnetic energy product improves, coercivity; remanent magnetism reaches domestic advanced index; magnetic core is played a protective role, play directed and screen closes effect, improved application life and result of use greatly the magnetic line of force; all the close magnetic residues in the hole that can exhaust accurately and quickly, permanent magnet is packed in the housing 2 that has weep hole.The permanent magnet top is connected with crash roll 5, screen closes pad 4, and the bottom connects protective cover 7 by connecting bolt 8.Protective cover is non-close magnetic material.Divide water cushion 3 to pack in the housing 2 that has weep hole, differently be connected with housing 2 outer walls through taking over 1.The fisher housing is outer through being 59mm-190mm, and it is applicable to φ 59-φ 190 drilling well series, magnetic attraction 20-200Kg.To the accident that aforementioned boring takes place,, select suitable specification for use according to foreign matter size in hole diameter and the well.Take down protective cover, this fisher is directly installed on the drilling rod and can uses.Following brill wants first water flowing (or flushing liquor) towards well when the shaft bottom, and slowly down to the shaft bottom, " residue " firmly held by fisher immediately at the bottom of the hole, can carry brill then.After using, clean and dry, cover protective cover.Close magnetic foreign body drops in the well, use this fisher, draw make things convenient for, save time, laborsaving, reduced cost of production, improved drilling efficiency, this fisher can disposablely drag for " residue " in the hole only, has opened up new approach for handling hole in-laws' magnetic " residue ", has shortened the time of processing accident greatly, and alleviated working strength of workers, saved raw material, improved economic benefit, old drilling technology flow process has been had great innovation meaning.

Claims (2)

1, drilling well well in-laws magnetic " residue " permanent magnetism fisher, it is characterized in that: form towards shallow lake mechanism by magnetic attraction mechanism and branch water, magnetic attraction mechanism comprises: permanent magnet (6) is an internally-inlaid, the top is connected with crash roll (5), screen closes pad (4), permanent magnet is packed in the housing (2) that has weep hole, the bottom divides water to comprise towards shallow lake mechanism by connecting bolt (8) connection protective cover (7): divide water cushion (3) to have the hollow cylinder of weep hole for the side, divide water cushion (3) to be contained in the housing (2) that has weep hole, differently be connected with housing (2) outer wall through catcher (1).

2, drilling well well in-laws magnetic as claimed in claim 1 " residue " permanent magnetism fisher, it is characterized in that: the outer warp of housing (2) is 59mm-190mm.

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