CN201915904U

CN201915904U - Electric heating and efficient paraffin removal and well cleanup device for variable frequency electromagnetic oil pipe

Info

Publication number: CN201915904U
Application number: CN201020631030XU
Authority: CN
Inventors: 李建华; 李载敏; 伍保华; 宋建国; 丁卫忠; 韩克庆; 张明源
Original assignee: SHANDONG TOP PETROLEUM EQUIPMENT CO Ltd
Current assignee: SHANDONG TOP PETROLEUM EQUIPMENT CO Ltd
Priority date: 2010-11-17
Filing date: 2010-11-17
Publication date: 2011-08-03
Anticipated expiration: 2020-11-17

Abstract

The utility model relates to electric heating oil recovery equipment, in particular to an electric heating and efficient paraffin removal and well cleanup device for a variable frequency electromagnetic oil pipe. The utility model adopts the technical scheme that the paraffin removal and well cleanup device mainly comprises a primary cable, a vehicle-mounted variable frequency power supply system, a secondary cable, a hanging body, a large four-way pipe and an oil pipe and sleeve pipe contactor, wherein the top of a sleeve pipe is connected with that of an oil pipe through the large four-way pipe, the bottom of the sleeve pipe is connected with that of the oil pipe through the oil pipe and sleeve pipe contactor, the hanging body is arranged above the large four-way pipe, and variable frequency current is converted into heat energy on the oil pipe in a mode of heat resistance effect. The utility model has the benefits as follows: electric heating energy is provided for the underground oil pipe to compensate the heat loss during the lifting of raw oil, so as to raise the temperature of the raw oil or the temperature of the oil pipe wall to melt paraffin deposit on the pipe wall, reduce the blocking and the like of manifolds, lower the load of an oil pumping unit and achieve the purposes of energy conservation and protection and increase in production.

Description

The efficient device for removing paraffin and washing well of variable-frequency electromagnetic oil pipe electric heating

One, technical field:

The utility model relates to a kind of heating oil extraction equipment, the efficient device for removing paraffin and washing well of particularly a kind of variable-frequency electromagnetic oil pipe electric heating.

Two, background technology:

Progressively exploitation along with the oil field, the high viscous oil characteristics that the oil field presents are more and more obvious, asphalt content height, big, the mobile official post of viscosity must be exploited difficulty and be strengthened, the serious wax deposition that so just causes tubing wall and surface line inwall, reduce effective flow area in the pipe, increase the flow resistance of crude oil, cause that back pressure rises, reduce oil well output, even can cause stopping production; Wax deposition between oil pipe and sucker rod can increase oil pumper load, even causes oil well pump wax card; The wax deposition at stratum perforation borehole and pump intake place can increase oil flow resistance, reduces pump efficiency; The wax deposition of near wellbore formation can reduce oleic permeability significantly, causes the oil well reduce or stop production.At present, adopt chemical agent wax control arts demand regularly to cooperate elevated temperature heat to wash measure, not only polluted crude oil but also the operation that must stop production, influence crude output, bring certain negative aftereffect.Physical method mainly contains intermediate frequency hollow stem electrothermal paraffin removal technology and power frequency, intermediate frequency oil pipe electrothermal paraffin removal technology, and hollow stem electric tracing technology must be equipped with hollow stem and down-hole high-temperature cable, and cost height, electric conversion efficiency are low, poor reliability, accident rate height.

Three, summary of the invention:

The purpose of this utility model is exactly the above-mentioned defective that exists at prior art, provide a kind of variable-frequency electromagnetic oil pipe electric heating efficient device for removing paraffin and washing well, wax deposition in the scavenge pipe reduces manifold and phenomenons such as block occur, reduce the oil pumper load, reach energy-conservation guarantor's product and volume increase purpose.

Its technical scheme is: mainly by a cable, vehicle-mounted frequency-converting power supply, secondary cable, suspension body, big four and casing tube contactor are formed, be connected by big four with the top of oil pipe at sleeve pipe, the bottom connects by the casing tube contactor, big four is provided with suspension body, alternating current is connected in the junction box of suspension body by secondary cable after frequency-conversion processing, via suspension body variable-frequency electromagnetic ripple electric current is imported the upper end of oil pipe again, formation is by vehicle-mounted frequency-converting power supply, secondary cable, suspension body, oil pipe, the casing tube contactor, sleeve pipe, secondary cable, return the electric loop of vehicle-mounted frequency-converting power supply, the frequency conversion electric current converts heat energy to the thermal resistance effect form on oil pipe.

The beneficial effects of the utility model are: provide electrical heat energy to down-hole oil tube, compensate crude oil at the last thermal loss of lifting in the way, improve crude oil temperature, or the tube wall temperature that improves oil pipe reaches the fusing wall wax deposition, reduce manifold and phenomenons such as block occur, reduce the oil pumper load, reach energy-conservation guarantor's product and volume increase purpose.

Four, description of drawings:

Accompanying drawing 1 is a structural representation of the present utility model;

Accompanying drawing 2 is vehicle-mounted frequency-converting power supply circuit block diagrams;

Among the last figure: a cable (1), vehicle-mounted frequency-converting power supply (2), secondary cable (3), suspension body (4), big four (5), oil pipe (6), sleeve pipe (7), casing tube contactor (8).

Five, the specific embodiment:

In conjunction with the accompanying

drawings

1 and 2, the utility model will be further described:

The utility model mainly is mainly by a cable 1, vehicle-mounted frequency-converting power supply 2, secondary cable 3, suspension body 4, big four 5, oil pipe 6, sleeve pipe 7 and casing tube contactor 8 are formed, be connected by big four 5 with the top of oil pipe 6 at sleeve pipe 7, the bottom connects by casing tube contactor 8, big four 5 is provided with suspension body 4, alternating current is connected in the junction box of suspension body 4 by secondary cable 3 after frequency-conversion processing, via suspension body 4 variable-frequency electromagnetic ripple electric current is imported the upper end of oil pipe 6 again, formation is by the electric loop of variable-frequency power sources → secondary cable → suspension body → oil pipe → casing tube contactor → sleeve pipe → secondary cable → variable-frequency power sources, the frequency conversion electric current converts heat energy to the thermal resistance effect form on oil pipe, be used to offset the stratum heat waste or supply with crude oil, with the wax removal drag reduction that reaches a high temperature, guarantee the purpose that pipeline is unimpeded.

At the particularity of high waxy oil Tibetan oil production technology, the efficient energy-saving electrothermal device of development meticulously.It mainly acts on: provide electrical heat energy to the downhole oil manifold, compensate crude oil at the last thermal loss of lifting in the way, improve crude oil temperature, or the tube wall temperature that improves oil pipe reaches the fusing wall wax deposition, stop the purpose that the block phenomenon appears in manifold, reduce the oil pumper load, reach energy-conservation guarantor's product and volume increase purpose.

For adapting to the special complex environment in down-hole, this device adopts the variable-frequency power sources power supply, can alleviate the perception of environment and the electric energy loss that capacitive load is brought to greatest extent, stops the electrochemical corrosion phenomenon and takes place, and avoids electric energy to be converted into chemical energy, the protection downhole tool; Allow electric energy on oil pipe string, change into heat energy equably, and can be controlled in a certain assigned address increasing heating power of oil pipe string.

Claims

1. efficient device for removing paraffin and washing well of variable-frequency electromagnetic oil pipe electric heating, it is characterized in that: mainly by a cable (1), vehicle-mounted frequency-converting power supply (2), secondary cable (3), suspension body (4), big four (5) and casing tube contactor (8) are formed, be connected by big four (5) with the top of oil pipe (6) at sleeve pipe (7), the bottom connects by casing tube contactor (8), big four (5) is provided with suspension body (4), alternating current is connected in the junction box of suspension body (4) by secondary cable (3) after frequency-conversion processing, via suspension body (4) variable-frequency electromagnetic ripple electric current is imported the upper end of oil pipe (6) again, formation is by vehicle-mounted frequency-converting power supply, secondary cable, suspension body, oil pipe, the casing tube contactor, sleeve pipe, secondary cable, return the electric loop of vehicle-mounted frequency-converting power supply, the frequency conversion electric current converts heat energy to the thermal resistance effect form on oil pipe.