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Hot diaphragm type ultrahigh molecular weight polyethylene composite oil pumping pipe

A technology of ultra-high molecular weight and polyethylene, applied in the direction of drill pipe, casing, layered products, etc., to achieve the effect of increasing oil pumping efficiency and improving oil pumping efficiency

Active Publication Date: 2009-07-08
江苏联冠科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005]Generally, the method of accompanying heating is used for heating oil pumping, but currently there is no heating method suitable for UHMWPE oil pumping pipelines

Method used

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  • Hot diaphragm type ultrahigh molecular weight polyethylene composite oil pumping pipe
  • Hot diaphragm type ultrahigh molecular weight polyethylene composite oil pumping pipe

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 , hot-film ultra-high molecular weight polyethylene composite oil suction pipe, including: metal outer pipe 1, ultra-high molecular weight polyethylene inner pipe 2, the electric heating film 3 is preset in the inner pipe interlayer; because the electric heating film can be better combined with the polyethylene Vinyl is bonded and has a large area, which can heat the inner layer better. The preset electric heating film should be within 2cm from the inner diameter side of the tube to ensure that the oil in the inner tube can be better heated on the one hand, and on the other hand Thick inner tube outer diameter can get better insulation effect.

[0027] The above-mentioned preset electrothermal film ground wire electrode 4 is exposed between the inner tube and the outer tube, and is connected to the metal outer tube. The electrode ground wire is set between the inner tube and the outer tube, and the outer metal tube can be directly used as a ground wire....

Embodiment 2

[0034] Such as figure 2 , hot-film ultra-high molecular weight polyethylene composite oil suction pipe, including: metal outer pipe 1, ultra-high molecular weight polyethylene inner pipe 2, the electric heating film 3 is preset between the above-mentioned outer pipe and inner pipe; the outer surface of the electric heating film 3 is coated There is an insulating heat-transfer layer, and a metal powder heat-conducting medium layer is glued between it and the inner tube 2, which can ensure that the oil in the inner tube can be better heated on the one hand, and on the other hand, the thicker inner tube outer diameter Can get better insulation effect. The advantage of this method is that it is easy to process, and there is no need to add the electrothermal film 3 into the inner tube 2 .

[0035] The above-mentioned preset electrothermal film ground wire electrode 4 is exposed between the inner tube and the outer tube, and is connected to the metal outer tube. The electrode grou...

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Abstract

The invention relates to an oil pumping tube for an oil well, in particular to an ultra-high molecular weight polyethylene composite oil pumping tube with a hot film heating layer. The oil pumping tube belongs to the technical field of petroleum industry. The hot film type ultra-high molecular weight polyethylene composite oil pumping tube comprises a metal outer tube and an ultra-high molecular weight polyethylene inner tube, wherein an electroheat film is preset in an inner tube interlayer, and the electroheat film covers an insulation heat transfer layer; the insulation heat transfer layer is made of insulation heat transfer materials of mica, quartz sand, plutonium tetrafluoride ethylene, heat conduction silicone grease, and the like. The heat conduction silicone grease is preferable. The tail end of the electroheat film is connected with a heat sensor and a temperature controller, and a metal powder heat-conducting medium layer is coated between the inner tube and the insulation heat transmission layer of the electroheat film. The product of the oil pumping tube improves the oil pumping efficiency and reduces the oil pumping cost.

Description

technical field [0001] The invention relates to an oil well suction pipe, in particular to an ultra-high molecular weight polyethylene composite oil suction pipe with a hot film heating layer. It belongs to the technical field of petroleum industry. Background technique [0002] At present, most of the crude oils discovered and developed in various oilfields in my country are "three high" crude oils with high wax content, high viscosity and high freezing point. According to their flow properties, they can be divided into two categories: one is wax-based crude oil with high wax content and high freezing point. Large, belonging to Newtonian fluid, but when the temperature drops close to the freezing point, the viscosity increases sharply, and has the characteristics of non-Newtonian fluid; the other is high-viscosity crude oil with high colloid content, which has a low freezing point and always has The characteristics of Newtonian fluid, but due to its high colloid content, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/00B32B15/082B32B1/08
Inventor 黄学祥
Owner 江苏联冠科技发展有限公司
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