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Automatic wax remover for electric oil-submersible centrifugal pumps

A centrifugal pump and wax remover technology, used in cleaning equipment, wellbore/well components, earth-moving drilling, etc., can solve the problems of high chemical wax removal cost, polluted air, inconvenient on-site operators, etc. Easy operation and stable flow rate

Active Publication Date: 2015-04-29
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The cost of chemical wax removal is high, pollutes the air, and brings inconvenience to on-site operators

Method used

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  • Automatic wax remover for electric oil-submersible centrifugal pumps
  • Automatic wax remover for electric oil-submersible centrifugal pumps
  • Automatic wax remover for electric oil-submersible centrifugal pumps

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Embodiment Construction

[0056] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0057] Such as figure 1 As shown, the present invention provides an automatic wax remover for an electric submersible centrifugal pump, which is used to remove wax on the inner wall of a lifting column. The automatic wax remover for an electric submersible centrifugal pump includes an upper reversing joint 7, a body 1 and the lower reversing joint 6, the upper reversing joint 7, the body 1 and the lower reversing joint 6 are installed in the lifting column in order from top to bottom, and the main body 1 can be relatively The lifting column moves up and down, the body 1 is used to remove the wax, and the upper diverter joint 7 and the lower diverter joint 6 are used to limit the vertical movement distance of the body 1 and for the The...

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Abstract

The invention discloses an automatic wax remover for electric oil-submersible centrifugal pumps, which belongs to the field of oil field exploitation tools. The automatic wax remover comprises an upper reversing joint, a body and a lower reversing joint which are sequentially mounted in a lifting string, the body can move up and down relative to the lifting string, the body is used for removing wax, and the upper reversing joint and the lower reversing joint are used for limiting the vertical moving distance of the body and reversing the body. By reasonably utilizing the conditions of high flow and stable flow velocity in the lifting string and then bringing the characteristic of the upthrust force of fluid or the sinking force of the weight of metal into full play, by means of the structure, the body can automatically move up and down in the lifting string, so that wax newly agglomerated on the inner wall of the string can be scraped off, so the automatic wax remover can automatically remove the wax in the lifting string of an electric oil-submersible centrifugal pump; since the automatic wax remover mechanically removes wax, the cost of using the automatic wax remover is low, the air cannot be polluted, and the automatic wax remover is convenient to operate.

Description

technical field [0001] The invention relates to the field of oil field development tools, in particular to an automatic wax remover for an electric submersible centrifugal pump. Background technique [0002] At present, in the development and production of domestic oil fields, about 5% of the oil wells use the electric submersible centrifugal pump to lift the oil. Due to the large displacement of this pumping method and its adaptability to lifting in deep inclined wells, it has been well applied in domestic oilfield development, and its application proportion is also increasing. [0003] However, because waxy oil wells are prone to wax accumulation, if the wax is not removed regularly, the liquid flow channel will become smaller, and the outlet back pressure of the pump will continue to increase, which will not only affect the oil production of the oil well, but also increase the daily energy (electricity) consumption. , It will even cause the unit to be overloaded, causing...

Claims

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Application Information

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IPC IPC(8): E21B37/02
CPCE21B37/02
Inventor 刘树高杨静韩启清李少甫唐庆孙福山李海燕王新红
Owner PETROCHINA CO LTD
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