CN2394000Y - Heating and de-waxing apparatus of drilling well - Google Patents

Abstract

The utility model relates to a heating and wax removing apparatus of an oil extraction well, which comprises a well pipe, an oil pipe and a sucker rod. The utility model is characterized in that a heating pipe made of ferromagnetic materials is fixedly connected with the sucker rod, an annular cavity is arranged on the oil pipe and an annular permanent magnet is assembled in the cavity. The utility model has the advantages that a power supply, a cable and additional equipment do not need to be appended, the cost of oil extraction is reduced, the structure is simple and the use is reliable.

Description

The producing well heating removes wax apparatus

The utility model belongs to a kind of producing well heating paraffin removal equipment, and particularly a kind of producing well of permanent-magnet linear electricity generating principle that adopts heats except that wax apparatus.

Petroleum well needs to heat and paraffin removal in oil recovery process, to improve crude output.There are multiple heating means at present, but all need additional power source, ground controller, copper conductor and armor cable (for example Chinese patent application 93229487.1 deep-well electromagnetic heaters, 99223556.1 intermediate frequency induction heating power supplies).Like this, not only increased cost for oil production, and also increased thereupon by the fault that optional equipment causes.

The purpose of this utility model provides a kind of producing well heating and removes wax apparatus, does not need additional supply, cable, saves control device, reduces cost for oil production, and is simple in structure, uses reliable.

The purpose of this utility model is achieved in that it comprises well casing, oil pipe and sucker rod, and its technical scheme main points are: the heat-generating pipe of affixed ferromagnetic material on sucker rod, oil pipe is provided with ring chamber, assembling annular permanent-magnet body in the chamber.Operating principle; When sucker rod drives the heat-generating pipe upper and lower displacement, by the magnetic field of cutting ring-type permanent magnet, heat-generating pipe induced-current, the resistance heat that this electric current produces raise the heat-generating pipe temperature, to heating through the crude oil in the heat-generating pipe, the magnetic field of permanent magnet generation simultaneously also helps avoid oil well paraffinication.

The utility model has the advantages that: do not need additional supply, cable and optional equipment, reduced cost for oil production, simple in structure, use reliable.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is the utility model structural representation.

Fig. 2 is a heat-generating pipe and the schematic diagram that connects of sucker rod.

See Fig. 1,2, concrete structure is as follows: assembling oil pipe 2 between well casing 1 and sucker rod 7, constitute ring chamber between oil pipe 2 and the non magnetic sheath 5, and assemble multiple tracks annular permanent-magnet body 3 in the ring chamber, the non magnetic filler 4 of partition is set between each road permanent magnet; On sucker rod 7, pass through to connect the heat-generating pipe 6 of muscle 8 affixed ferromagnetic materials.

Claims (1)

1, a kind of producing well heating removes wax apparatus, and it comprises well casing, oil pipe and sucker rod, it is characterized in that: the heat-generating pipe of affixed ferromagnetic material on sucker rod, oil pipe is provided with ring chamber, assembling annular permanent-magnet body in the chamber.

Images