CN2688886Y

CN2688886Y - Electromagnetic heating apparatus for full path of multi-group connected pipes to well bottom

Info

Publication number: CN2688886Y
Application number: CN 200420016087
Authority: CN
Inventors: 马成林
Original assignee: HENGSHUI HIGH TECHNOLOGIES PETROLEUM APPARATUS Co Ltd
Current assignee: HENGSHUI HIGH TECHNOLOGIES PETROLEUM APPARATUS Co Ltd
Priority date: 2004-04-19
Filing date: 2004-04-19
Publication date: 2005-03-30
Anticipated expiration: 2014-04-19

Abstract

The utility model belongs to the technology field of the furniture parts used for the oil well, and discloses an electromagnetic heating apparatus for full path of multi-group connected pipes to well bottom. The technical scheme comprises: a plurality of heating arrangements and heating electric sources are fixed at interval on the oil well pipe, and a plurality of heating devices connected as a whole are connected with the heating electric sources and fixed on the bottom of the oil pumping pipe. Wherein, the heating devices can be inserted into the oil layer sand pipe in the bottom of the oil well, and electric connected with the heat structure in series. The oil pumping pipe of the oil well becomes an electrically connected circuit. Because the heating device is a high-frequency electromagnetic heating device and the heating device is inserted in the oil layer sand pipe, the heating device can heat and magnetize the crude oil in the bottom of the oil well. So the coagulating point and the viscosity are reduced. Therefore, the utility model is beneficial to improve the crude oil output of the oil well. The electromagnetic heating apparatus for full path of multi-group connected pipes to well bottom can be used widely on the oil pumping pipe of all classes of oil wells.

Description

A kind of many groups connect oil pipe to shaft bottom whole process electromagnetic heater

Technical field

The utility model belongs to oil well equipment part technical field, relates to a kind of many groups specifically and connects oil pipe to shaft bottom whole process electromagnetic heater.

Background technology

At present both at home and abroad the oil field to high, coagulate, the difficult problem of consistency crude oil ubiquity exploitation, reason is to contain a large amount of asphalt colloids, cured matter etc. in crude oil, its freezing point is raise, in the lifting process its temperature can reduce gradually and produce knot cured, solidify, problem such as obstruction, can't ordinary production.In order to address the above problem, taked following measure: first method, utilize oil pipe and sleeve pipe to connect power supply, make oil pipe and the sleeve pipe heat that has a resistance, reach the purpose of heating, this heating means thermal efficiency is low, heat waste is many, and be subjected to the restriction of hole condition and profit mineral, can not heat, cause a lot of oil wells normally not use the crude oil below the oil well pump; Second method, the three-phase main-frequency heating furnace is adopted at the oil pick-up tube position under oil well pump, and this kind method makes crude oil burn fouling because it concentrates on a certain position easily, and it is many to heat inhomogeneous heat waste, and efficient is low.

Content of the present utility model

The purpose of this utility model just provide a kind of applied range, can be from the oil well mouth to the shaft bottom a kind of many groups of omnidistance heating connect oil pipes to the shaft bottom omnidistance electromagnetic heater.

For achieving the above object, the technical solution adopted in the utility model is: a kind of many groups connect oil pipe to shaft bottom whole process electromagnetic heater, be included in the some heating arrangements and the heating power supply of fixed interval on the oil well pipe, be fixed with the heater that is connected with heating power supply that several connect as one in the bottom of oil pick-up tube.

Its additional technical feature is: described heater is about sleeve type structure, and about pipe interlayer is fixed with heat generating components; Described heater is the calandria that internal fixation has heat generating components; Described heater is the variable-frequency electromagnetic heater; Between described power supply and heater, be in series with variable frequency control mechanism; Described heater can insert in the oil reservoir sandpipe that is fixed in the oil well shaft bottom; Described heater is that electric serial or parallel connection is connected with described heating arrangement; During described electric serial or parallel connection connects, be electrically connected the loop with the oil pick-up tube formation.

A kind of many groups provided by the utility model connect oil pipe, and omnidistance electromagnetic heater compared with prior art has the following advantages to the shaft bottom: first, owing to several electromagnetic heaters are installed at oil pipe upper end beginning to shaft bottom oil reservoir, crude oil in oil reservoir and the oil pipe is heated, therefore can make crude oil around the oil reservoir sandpipe flow into pit shaft smoothly and guarantee that it does not tie cured obstruction in oil pipe, thereby can fully improve pump efficiency, make the oil pumper operate as normal reach the purpose of low energy high and stable yields amount; The second, medium-high frequency electromagnetism heating has crude oil heated up falls double effects thick and the magnetization viscosity reduction; The 3rd, do the loop with oil pipe, not only save the cable while but also use oil pipe to produce a large amount of Kelvin effects, thermal efficiency height, it can not burn fouling according to hole condition requirements set installation site, combination, so homogeneous heating arbitrarily, and the high heat waste of the thermal efficiency is few.

Description of drawings

Fig. 1 is the structural representation that a kind of many groups connect oil pipe omnidistance electromagnetic heater to the shaft bottom;

Fig. 2 is the structural representation of first kind of oil reservoir sandpipe electromagnetic heater;

Fig. 3 is the structural representation of second kind of oil reservoir sandpipe electromagnetic heater.

The specific embodiment

Below in conjunction with drawings and Examples structure and the use principle that a kind of many groups provided by the utility model connect oil pipe omnidistance electromagnetic heater to the shaft bottom is described in further detail.

Be illustrated in figure 1 as the structural representation that a kind of many groups connect oil pipe omnidistance electromagnetic heater to the shaft bottom, its structure comprises the oil pick-up tube 2 in the oil well that inserts sleeve pipe 1, oil well pump 3 in the oil pick-up tube, fixed interval on oil pick-up tube (or connection) has several heaters 4.Tail pipe 6 ends of screen casing 5 lower ends of oil well pump 3 bottoms are connected with by two as the heater 8 in Fig. 2 or the insertion oil well shaft bottom oil reservoir sandpipe 7 that is connected as a single entity shown in Figure 3.Power supply 9 is given the heater 4 that is fixed on the oil pick-up tube 2 and is fixed in the oil reservoir sandpipe 7 heater 8 power supplies through variable frequency control cabinet 10.Above-mentioned heater and heater are connected in series through cable 11, and its return cable 12 connects with the tube wall 13 of oil pick-up tube.

Its operating principle is, at first, the interchange three-phase main-frequency that power supply 9 provides, through the adjustable height of variable frequency control cabinet 10 inversion frequencies, intermediate frequency single phase poaer supply, utilize cable 11 to penetrate by sealer 14, utilize centralizer 15 to be fixed on the oil pipe 2, each electromagnetic heater 4 lower ends constitute the loop on the pump by connecting, electric current turns back under the well head along tube connector 16, oil pipe 2, utilizes cable loop device 17 and cable conductor 11 to be drawn by sealer 3, sends back in the variable frequency control cabinet.Height during work, electric current of intermediate frequency just produce electromagnetism heat and Kelvin effect heat during by each electromagnetic heater and oil pipe, carry out and add the thick and magnetization viscosity reduction effect of heat drop coagulating viscous crude, so it has heating and magnetization double effects.

As Fig. 2, Figure 3 shows that and be fixed in structural representation oil pick-up tube bottom and that insert the electromagnetic heater 8 in the oil reservoir sandpipe 7 that promptly this heater both can be the calandria that as shown in Figure 2 internal fixation has heat generating components 18.Also can be about sleeve type structure as shown in Figure 3, lining pipe 21 and outer tube 20 interlayers be fixed with heat generating components 19.These heaters can be to be connected by several screw threads 22 by its end, also can otherwise connect certainly.

Claims

1, a kind of many groups connect oil pipe to shaft bottom whole process electromagnetic heater, be included in the some heating arrangements and the heating power supply of fixed interval on the oil well pipe, it is characterized in that: be fixed with the heater that is connected with described heating power supply that several connect as one in the bottom of described oil pick-up tube.

2, a kind of many groups as claimed in claim 1 connect oil pipe to shaft bottom whole process electromagnetic heater, and it is characterized in that: described heater is about sleeve type structure, and about pipe interlayer is fixed with heat generating components.

3, a kind of many groups as claimed in claim 1 connect oil pipe to shaft bottom whole process electromagnetic heater, and it is characterized in that: described heater is the calandria that internal fixation has heat generating components.

4, a kind of many groups as claimed in claim 1 connect oil pipe to shaft bottom whole process electromagnetic heater, and it is characterized in that: described heater is the variable-frequency electromagnetic heater.

5, a kind of many groups as claimed in claim 1 connect oil pipe to shaft bottom whole process electromagnetic heater, it is characterized in that: be in series with variable frequency control mechanism between described power supply and heater.

6, connect oil pipe to shaft bottom whole process electromagnetic heater as claim 1,2,3,4 or 5 described a kind of many groups, it is characterized in that: described heater can insert in the oil reservoir sandpipe that is fixed in the oil well shaft bottom.

7, a kind of many groups as claimed in claim 1 connect oil pipe to shaft bottom whole process electromagnetic heater, and it is characterized in that: described heater is that electric serial or parallel connection is connected with described heating arrangement.

8, a kind of many groups as claimed in claim 7 connect oil pipes to the shaft bottom omnidistance electromagnetic heater, it is characterized in that: during described electric serial or parallel connection connects, constitute to be electrically connected with oil pick-up tube and go the same way.