CN2147625Y

CN2147625Y - Cable for oil well energy-exchanger

Info

Publication number: CN2147625Y
Application number: CN 93203550
Authority: CN
Inventors: 马裕华; 张令宜
Original assignee: TIANJIN CITY CABLE GENERAL FACTORY
Current assignee: TIANJIN CITY CABLE GENERAL FACTORY
Priority date: 1993-02-16
Filing date: 1993-02-16
Publication date: 1993-11-24
Anticipated expiration: 2003-02-16

Abstract

The utility model relates to a cable for oil well energy-exchanger, which is characterized in that protection layers of three forms are added to the external of the insulated core respectively, and 1-4 signal lines are arranged in an inner armor. The cable has the advantages of excellent heat resistance, oil resistance, high mechanical strength and good high frequency energy transferring effect, and can be adaptable for the adverse environment underground and the demand of repeated underground use; besides, the cable can transfer the feedback signal between the energy exchanger and the ground equipment, meeting the large power oscillation between acoustic wave and supersonic wave.

Description

Cable for oil well energy-exchanger

The utility model belongs to well recovery transducer cable.

In known technology, in China, late period well recovery utilize the high-power vibration oil production technology of sound wave-ultrasonic wave mostly, the oil well transducer cable that transducer and ground installation carry out the high-frequency energy transmission under the connection oil well is generally selected the outer directly structure of armouring wire layer of insulation for use.Because the cable of this structure is heat-resisting, oil resistance is poor, mechanical strength is low, therefore can not adapt to the down-hole adverse circumstances, and cable is short useful life, the use of can not going into the well repeatedly causes energy transmission efficiency low, can not transmit the feedback signal between down-hole transducer and the ground installation.

The purpose of this utility model is the deficiency that overcomes known technology, and the oil well transducer cable that provides a kind of high-frequency energy that is complementary with transducer to transmit.

The purpose of this utility model is to realize like this, the conductor wire core made by the only son and heir or stranded plain conductor 1 is outer extrudes the insulating barrier 2 that one deck is made by modification second third glue or polypropylene, IXPE material, the outer triformed protective layer of insulating barrier, they are respectively the 1. outer wrapped protective layers 3 of insulating barrier; 2. insulating barrier is extruded the protective layer of being made by the modification butyronitrile rubber 7 outward, wrapped again protective layer 3; 3. the outer wrapped protective layer 3 of insulating barrier; weave one deck copper wire or wrapped one deck copper strips again and constitute layer of metal layer 8; metal level is extruded protective layer 7 outward; wrapped again protective layer 3; respectively at three kinds of armoured inside and outside two-layer zinc-coated wires 5,6 of protective layer, wherein in inner armor layer 5, place one to four holding wire 4 again.

Wrapped protective layer of the present utility model by one deck teflin tape and one deck nylon tape or strap, glass tape is wrapped and form.

The utility model has following accompanying drawing:

Fig. 1 is the of the present utility model the cable schematic cross section of 1. planting protective layer;

Fig. 2 is the of the present utility model the cable schematic cross section of 2. planting protective layer;

Fig. 3 is the of the present utility model the cable schematic cross section of 3. planting protective layer.

Among Fig. 1-Fig. 3, label 1 is a conductor wire core, and 2 is insulating barrier, and 3 is wrapped protective layer, and 4 is holding wire, and 5 is the inner armor layer, and 6 is armoured layer, and 7 for extruding protective layer, and 8 is metal level.

The utility model has the advantages that because project organization is reasonable, promptly insulating barrier has increased protective layer outward; then make this cable have good heat-resisting, oil resistance; the mechanical strength height, the requirement that adapts to the down-hole adverse circumstances and go into the well repeatedly and use, thereby the useful life of having improved cable.Owing to 3. plant the and to have increased metal level in the protective layer structure, reduced loop resistance again, when transducer impedance and cable resistance are complementary under high frequency, can make the high-frequency energy laser propagation effect better.Can transmit the feedback signal between the transducer and ground installation in the oil well in addition, thereby satisfy the needs of the high-power vibration oil production technology of sound wave-ultrasonic wave, improve crude output.

Claims

1, a kind of oil well transducer cable, it is by conductor wire core, compositions such as insulating barrier, protective layer, armour, it is characterized in that: the conductor wire core made by the only son and heir or stranded plain conductor 1 is outer extrudes the insulating barrier of being made by modification second third glue or polypropylene, IXPE material 2, the outer triformed protective layer of insulating barrier, they are respectively: the 1. outer wrapped protective layer 3 of insulating barrier; 2. insulating barrier is extruded the protective layer of being made by the modification butyronitrile rubber 7 outward, wrapped again protective layer 3; 3. the outer wrapped protective layer 3 of insulating barrier; weave one deck copper wire or wrapped one deck copper strips again and constitute metal level 8; metal level is extruded protective layer 7 outward; wrapped again protective layer 3; respectively at three kinds of armoured inside and outside two-layer zinc-coated wires 5,6 of protective layer, wherein in inner armor layer 5, place one to four holding wire 4 again.

2, oil well transducer cable according to claim 1 is characterized in that: wrapped protective layer 3 by one deck teflin tape and one deck nylon tape or strap, glass tape is wrapped and form.