CN2276555Y - Bore oil-reservior frequency-modulated heater - Google Patents

Abstract

The utility model relates to a heater for exploiting in the oil reserviors of deep wells, particularly a deep well oil reservior frequency-modulated heater. The utility model is characterized in that the heater is composed of a heating device, a special cable and a control box, wherein, the heating device comprises an inner oil pipe and a protective outer sleeve pipe, a three-phase load winding is wound on the outer wall of the inner oil pipe, and the outer layer of the load winding is additionally provided with the protective outer sleeve pipe. The utility model has the advantages that according to the requirement of the quantity of oil output, frequency, voltage and current of a power supply can be automatically regulated; the power supply frequency can be changed from 0 to 150Hz/s, and the regulating range of heat power is from 0 to 100 kW. The utility model also has the advantages of automatic temperature control, wide range of temperature regulation, simple operation, fast temperature rise, high heat efficiency, low power consumption and long service life.

Description

Deep-well oil reservoir frequency modulation heater

The utility model relates to a kind of heater of deep-well reservoir exploitation---deep-well oil reservoir frequency modulation heater.

At present, in the thickened oil recovery process since oil viscosity increase, have a strong impact on the yield of oil, adopt steam soak or mix production technique such as thin oil, though effectively, but all be acts and efforts for expediency, and equipment is huge, the thermal efficiency is low, the compound electric heater of China's utility model patent ZL94228508.5 oil reservoir pit shaft, its electrical heating partly is made up of sucker rod insulating short section, oil pipe insulating short section, oil reservoir heating short circuit anchor, sleeve pipe insulating short section and temperature control short circuit anchor, though efficiency of heating surface height, complex structure, the investment cost height, operation inconvenience.

The purpose of this utility model is the deficiency that overcomes above-mentioned technology, and a kind of deep-well oil reservoir frequency modulation heater is provided.

The utility model technology contents is summarized as follows:

A kind of deep-well oil reservoir frequency modulation heater; it is characterized in that: this equipment is made up of heater, private cable, control cabinet; heater comprises inner oil tube and protection outer tube; inner oil tube one end is connected with oil well petroleum pipeline tail pipe by union; the other end is connected with the top petroleum pipeline; around the threephase load winding, the load winding can be connected at the inner oil tube outer wall

Type or ＂ △ ＂ type; load winding skin adds the protection outer tube; the two ends of protection outer tube and inner oil tube afterbody flange and the connecting line second flange welded seal; magnetic conduction supporting ring flange and connecting line first flange in the middle of two pipe middle parts are equipped with two; on each flange, insulation sleeve is housed; winding conducting wire is drawn by the insulation sleeve in the flange; firmly be connected with connector with the cable that from connecting line second flange, is incorporated in the heater, between inner oil tube and protection outer tube, be filled with conduction oil or 45# transformer oil.

The utility model is according to the requirement of oil pump capacity size, can regulate the frequency of power supply and voltage, electric current automatically.Supply frequency can change at 0-150Hz/ second, and its thermal power adjustable range is 0-100kw, and can be temperature automatically controlled, and temperature regulating range is wide, simple to operate, quick heating, thermal efficiency height, low in energy consumption, long service life.

Fig. 1 is the structural representation of heater.

Fig. 2 is the control principle figure of control cabinet.

Provide following embodiment below in conjunction with description of drawings:

Fig. 1 discloses the structure of heater; heater comprises inner oil tube 2 and protection outer tube 4, and inner oil tube 2 one ends are connected with oil well petroleum pipeline tail pipe by union 1, and the other end is connected with the top petroleum pipeline; around threephase load winding 5, the load winding can be connected at inner oil tube 2 outer walls Type or ＂ △ ＂ type; load winding skin adds protection outer tube 4; two ends the afterbody flange 3 and connecting line second flange 10 welded seals of protection outer tube 4 and inner oil tube 2; magnetic conduction supporting ring flange 6 and connecting line first flange 8 in the middle of two pipe middle parts are equipped with two; insulation sleeve 7 is housed on each flange; winding conducting wire is drawn by the insulation sleeve in the flange; firmly be connected with the cable 11 usefulness connectors 9 that from connecting line second flange 10, are incorporated in the heater; in order to resist underground pressure, between inner oil tube and protection outer tube, be filled with conduction oil or 45# transformer oil to heater conduit.

See Fig. 2, air automatic switch K is housed in the control cabinet, silicon-controlled conversion element 14, smoothing reactor L and filter condenser C, jumbo transistor inverter 16, frequency conversion and power governor 15, adjustment indicator 17, ammeter, voltmeter and frequency meter indicator lamp 13, the three-phase alternating current of 380V is through DZ10-200A air automatic switch K, deliver to 14 three-phase bridge rectifications of silicon-controlled conversion element, direct current after the rectification is delivered to transistor inverter 16 behind smoothing reactor L and filter condenser C, another mistake becomes three-phase alternating current, through raise frequency and change voltage of the pulsewidth frequency modulator 15 of PWM, carry out power adjusting, for 18 heating of threephase load winding.100A/0.1A threephase current transformer 12, frequency setter 19, voltage setter 20 and adjustment indicator 17 are housed in control cabinet,, improve the oil field oil pump capacity to obtain the supervision control of frequency, voltage, electric current and temperature.

Heater is installed in deep-well oil reservoir place, control appliance with ground, behind ac-dc-ac inverter, provide the three-phase medium frequency alternating current to produce alternating magnetic field for the heater winding by handling cable, on the oil transportation tube wall, produce eddy current, because the rising and the kelvin effect of frequency, the efficient heat energy of generation makes viscous crude thinning, thereby has improved oil production rate.The pulsewidth FM circuit all has the standard of promulgation both at home and abroad in the control cabinet, and this part is a prior art.

Claims (1)

1. deep-well oil reservoir frequency modulation heater; it is characterized in that: this equipment is made up of heater, private cable, control cabinet; heater comprises inner oil tube and protection outer tube; inner oil tube one end is connected with oil well petroleum pipeline tail pipe by union; the other end is connected with the top petroleum pipeline; around the threephase load winding, the load winding can be connected at the inner oil tube outer wall

Type or ＂ △ ＂ type; load winding skin adds the protection outer tube; the two ends of protection outer tube and inner oil tube afterbody flange and the connecting line second flange welded seal; magnetic conduction supporting ring flange and connecting line first flange in the middle of two pipe middle parts are equipped with two; on each flange, insulation sleeve is housed; winding conducting wire is drawn by the insulation sleeve in the flange; firmly be connected with connector with the cable that from connecting line second flange, is incorporated in the heater, between inner oil tube and protection outer tube, be filled with conduction oil or 45# transformer oil.

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