Automatic paraffin removing device for oil well

An automatic wax removal technology, applied in isolation devices, cleaning tools, boreholes/well components, etc., can solve the problems of not being able to remove wax quickly and efficiently, and achieve control of equipment running time, efficient wax removal, and easy implementation Effect

Active Publication Date: 2015-11-25
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problem that existing devices cannot remove wax quickly and efficiently, the present invention provides an automatic wax removal device for oil wells. The present invention adopts the shielding property of metal to microwave According to the principle of microwave penetration to organic materials, different types of magnetrons are used according to the type of heating fluid to directly heat the fluid, which can quickly heat the oil well output fluid

Method used

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  • Automatic paraffin removing device for oil well
  • Automatic paraffin removing device for oil well
  • Automatic paraffin removing device for oil well

Examples

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Embodiment 1

[0021] In order to overcome the problem that the existing devices cannot remove wax quickly and efficiently, the present invention provides an automatic wax removal device for oil wells. The present invention adopts the principle of shielding of microwaves by metals and penetrability of microwaves to organic materials, and according to the type of heating fluid Different, different types of magnetrons are used to directly heat the fluid, which can quickly heat the oil well output fluid. When heating the produced fluid, different types of magnetrons can efficiently heat the produced water and crude oil, and use the upward process of the produced fluid to heat the waxed tubing section. The heated water vapor and associated gas are heated, and the density of the heated water vapor and associated gas becomes smaller, which will form a convective heat exchange with the upper low-temperature gas, which can quickly heat up, compensate for the heat dissipation of the oil pipe, maintain...

Embodiment 2

[0031] On the basis of Embodiment 1, in this embodiment, the wax removal unit body 8 is connected to a lotus-shaped platform by four semicircles connected end to end, and the three external magnetrons 2 and one armored The cables II are respectively located at the four semicircular protrusions of the lotus-shaped wax removing unit body 8 .

[0032] Adopt the semicircle material that connects end to end, reduce the weight of wax removal unit body 8 like this, save material, under the situation that guarantees normal operation, save cost, lighten the weight of whole device.

[0033] The outer magnetron 2 and the armored cable II are provided with trapezoidal organic material seals 1 , and the trapezoidal organic material seals 1 are fixed on the wax removal unit body 8 by external fastening bolts 5 .

[0034] An annular organic material seal 7 is arranged in the through hole of the wax removal unit body 8 , and the annular organic material seal 7 and the wax removal unit body 8 ...

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Abstract

The invention provides an automatic paraffin removing device for an oil well. The automatic paraffin removing device comprises an oil pipe, wherein three paraffin removing units are arranged on the oil pipe at equal distances, positioned in a casing pipe, and connected with a power distribution cabinet arranged outside the casing pipe through an armour cable; each paraffin removing unit comprises a paraffin removing unit body, a through hole is formed in the center of the corresponding paraffin removing unit body, a plurality of inner magnetrons are radially arranged on the corresponding paraffin removing unit body along the through hole, and three outside magnetrons and the armour cable are evenly distributed on the edge of the corresponding paraffin removing unit body; a temperature control device is arranged beside the armour cable and electrically connected with the paraffin removing units. According to the automatic paraffin removing device disclosed by the invention, paraffin can be automatically removed without stopping the production, while in use, when the operational temperature of the paraffin removing units is 30 DEG C higher than a set paraffin removing temperature, a power source is cut off by the temperature control device to stop heating and protect equipment safety, and after the operational temperature of the paraffin removing units is lowered to the set paraffin removing temperature, the temperature control device can be automatically connected with the power source so as to perform heating and paraffin removal.

Description

technical field [0001] The invention belongs to the field of wax removal in oil production wells, in particular to an automatic wax removal device for oil wells. Background technique [0002] In the process of oil field development, it is often accompanied by wax deposition in the oil well. After the tubing is waxed, the fluid production of the oil well will decrease, the number of pump inspections will increase, the load of the pumping unit will increase, and the energy consumption will increase. When the wax deposition is serious, the tubing will be blocked. The oil well does not produce liquid, and when it is more serious, it will cause the sucker rod to break and cause an accident. [0003] At present, paraffin control technology and paraffin removal technology are generally used in paraffin oil wells. Paraffin control technologies include chemical paraffin control and physical paraffin control. Chemical anti-wax is to add anti-wax agent, which is expensive, and at the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B37/00E21B36/04
Inventor 王小勇杨立华姜毅刘爱华唐泽玮刘宁杨会丽苑慧莹程碧海
Owner PETROCHINA CO LTD
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