CN2655384Y - Double wire armoured cable special for through-pipe perforation - Google Patents

Abstract

The utility model belongs to a cable product in the electric apparatus art, which is a special used product of an over-pipe shooting hole when the oil industry system particularly performs, mainly characterized in that the original cable is used as a loop wire, an insulation layer is enlarged, the core gap of the cable adopts polyester cotton wires for stuffing, polyester/cotton core-spun sewing thread cone winding materials are coated outside, and the cable core adopts high carbon zinc coated steel wire for double layers equipment. The utility model has the main advantages that the special used product increases the performance, prolongs the using life, is used conveniently and meets the special demand of moment ignition of the shooting hole cable.

Description

Cross the special-purpose double wire armor cable of pipe perforation

One, technical field:

The utility model belongs to the cable product of appliance field, is the special product of crossing the pipe perforation when being used for the petroleum industry system operations specific.

Two, technical background:

Before this product invention, in the China's oil geological prospecting system, there is not special-purpose perforation cable when being used for perforating job, just utilize logging cable to substitute, and the general core number of logging cable is more, the single line sectional area is less, need to increase screen in order to make the electric field equilibrium simultaneously, it is all thinner to cause insulating barrier to be made, and perforating job requires electric current bigger, especially instantaneous ignition electric current cause in use often occurring phenomenons such as cable breakdown, core be disconnected like this, and whole exploration system will be paralysed all behind the cable breakdown.China's perforation industry generally adopts many cores to be screwed in use together for this reason, and the drawback one that many cores are screwed in together in the use is the wiring difficulty, if simultaneously the contact place handles and badly electric discharge phenomena will occur, because the problem of insulating barrier does not still solve, the phenomenon of puncture still often occurs simultaneously.Therefore former logging cable can not satisfy the perforation needs, presses for a kind of novel suitable special-purpose perforation cable.

Three, summary of the invention:

The purpose of this utility model provided the special-purpose double wire armor cable of pipe perforation, solved the defective and the drawback of above-mentioned existence, improved the structure on core sectional area and the insulation thickness, and this kind private cable product is provided.This kind cable uses in specific environment, at external diameter, roundness, aspects such as tensile strength all are set indexs, the steel wire radical of cable can not reduce, only improve internal structure, the cover wire that utilizes cable is as return line, the radical of cable core is reduced, sectional area improves, and is less demanding for the electric field balance between core because of this class cable, therefore the core screen can be removed, insulating barrier strengthens, the core gap is bigger behind the cable stranding, needs to adopt the polyester-cotton blend line to fill, and selects the stranded filling of multiply polyester-cotton blend line, be surrounded by the wrapped material of shielding outward, cable core adopts the carbon zinc-coated wire to carry out double armor.

The beneficial effects of the utility model are to have this private cable to compare with general cable, improved performance, have prolonged useful life, easy to use, the specific demand of having satisfied the perforation cable instantaneous ignition.

Four, description of drawings:

As figure is structural representation of the present utility model.

Among the figure 1, cover wire, 2, steel wire of internal layer, 3, the polyester-cotton blend line of packing material, 4, the insulating barrier of polypropylene or fluoroplastics or rubber, 5, the copper stranded conductor, 6, lapped shielding layer,

Five, execution mode:

As seen from the figure, three copper stranded conductors 5 are installed in lapped shielding layer 6, outside copper stranded conductor 5, assemble by insulator 4 packings, outside insulator 4, be coated with one deck sealing agent again, insulator 4 can be made of polypropylene or fluoroplastics or rubber, polyester-cotton blend line 3 is filled in space between the copper stranded conductor, at screen 6 armoured steel wire of internal layer 2 and cover wire 1.This product of transformation of the way back has guaranteed that tensile strength, roundness, the finished cable external diameter of cable keep being equal to logging cable, satisfies all kinds of perforation requirements fully through on probation, and prolong useful life greatly.

Claims (2)

1, cross the special-purpose double wire armor cable of pipe perforation, it is characterized in that the cover wire of cable as return line, strengthen insulating barrier, the core gap of cable stranding adopts the polyester-cotton blend line to fill, the wrapped material of outsourcing shielding, cable core adopts the carbon zinc-coated wire to carry out double armor, three copper stranded conductors (5) also promptly are installed in lapped shielding layer (6), outside copper stranded conductor (5), assemble by insulator (4) packing, outside insulator (4), be coated with one deck sealing agent again, polyester-cotton blend line (3) is filled in space between copper stranded conductor (5), at armoured steel wire of internal layer of screen (6) (2) and cover wire (1).

2, by the described special-purpose double wire armor cable of pipe perforation of crossing of claim 1, it is characterized in that the stranded filling of core gap employing multiply polyester-cotton blend line.

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