CN2170562Y

CN2170562Y - Firing cable

Info

Publication number: CN2170562Y
Application number: CN 93231628
Authority: CN
Inventors: 秦裕祯; 苏凤平
Original assignee: SHANDONG CABLE FACTORY
Current assignee: SHANDONG CABLE FACTORY
Priority date: 1993-08-13
Filing date: 1993-08-13
Publication date: 1994-06-29
Anticipated expiration: 2003-08-13

Abstract

The utility model relates to a firing cable, which is formed by that a main insulating wire core (1) is hinged with a control insulating wire core (2) to combine into a cable wound with a turnkey insulating layer (3) which is then wound with a cushion layer (4) and an armour (5). The insulating materials on the main insulating wire core (1), the control insulating wire core (2) and the turnkey insulating layer (3) are insulating materials with temperature-resistant levels of 180 DEGC; thus, the utility model can bear the high temperature when oil wells are mined, and the requirement for needed cables when thick oil is changed into thin oil in the oil production technology is satisfied.

Description

Firing cable

The utility model belongs to the electric wire field, exactly belongs to the oil exploration oil recovery and uses cable, is to be used for the firing cable of heavy oil wells retrogradation oil for thin oil oil production technology igniting usefulness.

At present, domestic oil well has a considerable amount of heavy oil wells, and the flowability of viscous crude is poor in these oil wells, can't recover the oil with electric submersible pump.In the past, the precedent of combustion in situ was arranged once, the burning retrogradation oil by crude oil is thin oil, exploits.The cable that adopts is a polypropylene insulation, though the polypropylene good insulation preformance holds the high temperature when can't stand underground work.Because it is softening that high temperature causes polypropylene, and cause the cable phase fault, adds that cable conductor adopts rigid structure, uses inconvenience, can't finish above-mentioned technological requirement.

The purpose of this utility model provide a kind of retrogradation oil for use in the thin oil oil production technology, heatproof is 180 ℃ firing cable.

This firing cable that the utility model provides, it is made up of main insulation core, control insulated wire cores, full packaged insulation materials layer, bed course, armour.

Introduce the utility model in detail below in conjunction with accompanying drawing.

Fig. 1: schematic diagram of the present utility model

Fig. 2: schematic cross-section of the present utility model

Fig. 3: the schematic cross-section of main insulation core

Fig. 4: the schematic cross-section of control insulated wire cores

Among the figure: 1 is the main insulation core, and 2 are the control insulated wire cores, and 3 is the full packaged insulation materials layer, and 4 is bed course, and 5 is armour, and 6 take wire core as the leading factor, and 7 is inner insulating layer, and 8 is external insulation layer, and 9 is steel wire, and 10 are the control conductor wire core, and 11 is sheath.

The utility model is formed (seeing Fig. 1, Fig. 2) by main insulation core (1), control insulated wire cores (2), full packaged insulation materials layer (3), bed course (4), armour (5) etc.Main insulation core (1) (see figure 3) is to go up wrapped upward inner insulating layer (7), external insulation layer (8) by leading wire core (6) to form, leading wire core (6) adopts the soft junction structure, inner insulating layer (7) is a polyimide film, and external insulation layer (8) is that polytetrafluoroethylene film, main insulation core (1) also can adopt and directly extrude the Meltability polytetrafluorethyletubular insulating barrier make on leading wire core (6).Control insulated wire cores (2) (see figure 4) is made up of steel wire (9), control conductor wire core (10) and sheath (11).Control conductor wire core (10) is stranded on the steel wire (9), sheath (11) wraps on the control conductor wire core (10), control conductor wire core (10) is to form by enamelled wire is stranded, and it is that temperature resistant grade is not less than 180 ℃ insulating material that sheath (11) requires its material.The utility model is with behind main insulation core (1) and control insulated wire cores (2) the stranded stranding, the outer wrapped full packaged insulation materials layer (3) of going up, the wrapped bed course (4) of going up in full packaged insulation materials layer (3) outside, armour (5) on the armouring again outside bed course (4).Full packaged insulation materials layer (3) is made up of 2 strata tetrafluoroethene films at least, and bed course (4) is made up of 2 layers of no glue glass fiber strap at least, and armour (5) is formed by 2 floor height intensity zinc-coated wire armourings at least.

The utility model is owing to adopted polyimides, teflon insulation, its heatproof can reach 180 ℃, high temperature in the time of bearing underground work, leading wire core adopts the soft junction structure, can satisfy of the requirement of retrogradation oil, for heavy oil wells exploitation new technology provides a kind of novel cable for required cable in the thin oil oil production technology.

Claims

1, a kind of firing cable, it is characterized in that it is made up of main insulation core [1], control insulated wire cores [2], full packaged insulation materials layer [3], bed course [4], armour [5], wrapped full packaged insulation materials layer [3] behind main insulation core [1] and the stranded stranding of control insulated wire cores [2], wrapped again bed course [4] outside full packaged insulation materials layer [3] is at the armoured armour [5] of going up of bed course [4].

2, according to the described firing cable of claim 1, upward wrapped inner insulating layer ［ 7 ］, external insulation layer ［ 8 ］ form by leading wire core ［ 6 ］ to it is characterized in that said main insulation core ［ 1 ］; Also can adopt and on leading wire core ［ 6 ］, directly extrude Meltability polytetrafluorethyletubular and make.

3,, it is characterized in that said inner insulating layer ［ 7 ］ is a polyimide film according to the described firing cable of claim 2.

4,, it is characterized in that said external insulation layer ［ 8 ］ is a polytetrafluoroethylene film according to the described firing cable of claim 2.

5, according to the described firing cable of claim 1, it is characterized in that said control insulated wire cores ［ 2 ］ is made up of steel wire ［ 9 ］, control conductor wire core ［ 10 ］, sheath ［ 11 ］, control conductor wire core ［ 10 ］ is stranded on the steel wire ［ 9 ］, and sheath ［ 11 ］ is outside control conductor wire core ［ 10 ］.

6,, it is characterized in that the sheath ［ 11 ］ of said control insulated wire cores ［ 2 ］ is not less than 180 ℃ insulating material for heatproof degree grade according to the described firing cable of claim 5.

7,, it is characterized in that said full packaged insulation materials layer ［ 3 ］ is made up of at least 2 layers polytetrafluoroethylene film according to the described firing cable of claim 1.

8,, it is characterized in that said bed course ［ 4 ］ is made up of at least 2 layers no glue glass fiber strap according to the described firing cable of claim 1.

9,, it is characterized in that said armour ［ 5 ］ is made up of at least 2 layers of zinc-coated wire armour according to the described firing cable of claim 1.