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Anticorrosive, wax-proof and high-temperature-resistant polyethylene tube for oil extraction and preparation method of polyethylene tube

A technology of high temperature resistant polyethylene and high density polyethylene, applied in the field of polyethylene lined pipes, can solve the problems of poor acid resistance and high cost of oil pumping pipes, and achieve the effects of improving heat resistance, improving rigidity and good acid resistance

Active Publication Date: 2015-07-22
济南赛辰高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides an anti-corrosion, anti-wax, high-temperature-resistant polyethylene lining pipe for oil production and a preparation method thereof. The cost of the oil pipe and the oil suction pipe made of modified nylon is relatively high, and the acid resistance is poor.

Method used

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  • Anticorrosive, wax-proof and high-temperature-resistant polyethylene tube for oil extraction and preparation method of polyethylene tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047]A preparation method for anti-corrosion, anti-wax deposition, and high-temperature-resistant polyethylene pipes for oil recovery, comprising the following steps:

[0048] 1) In parts by weight, weigh 100 parts of PE100 high-density polyethylene, 3 parts of bismaleimide, 1.5 parts of styrene, 0.3 part of DCP crosslinking agent, and 0.01 part of neodymium trioxide, mix well, and set aside;

[0049] 2) Inhale the uniformly mixed raw materials into the vacuum barrel with the suction system, turn on the barrel temperature regulator, control the temperature of the material in the barrel at 100°C, and then send the dried material into the polyolefin extruder Screw barrel; the polyolefin extruder adopts a gradual change type screw, and the screw compression ratio is 3.4:1;

[0050] 3) Adjust the parameters of the screw machine:

[0051] Adjust the temperature of each heating zone of the extruder barrel: Zone 1: 175°C; Zone 2: 203°C; Zone 3: 213°C; Zone 4: 213°C;

[0052] Adjus...

Embodiment 2

[0058] A preparation method for anti-corrosion, anti-wax deposition, and high-temperature-resistant polyethylene pipes for oil recovery, comprising the following steps:

[0059] 1) In parts by weight, weigh 90 parts of PE80 high-density polyethylene, 1 part of bismaleimide, 1 part of styrene, 0.1 part of DCP crosslinking agent, and 0.005 part of neodymium trioxide, mix well, and set aside;

[0060] 2) Inhale the uniformly mixed raw materials into the vacuum barrel with the suction system, turn on the barrel temperature regulator, control the temperature of the material in the barrel at 95°C, and then send the dried material into the polyolefin extruder Screw barrel; the polyolefin extruder adopts a gradual change type screw, and the screw compression ratio is 3.4:1;

[0061] 3) Adjust the parameters of the screw machine:

[0062] Adjust the temperature of each heating zone of the extruder barrel: Zone 1: 170°C; Zone 2: 200°C; Zone 3: 210°C; Zone 4: 210°C;

[0063] Adjust the...

Embodiment 3

[0069] A preparation method for anti-corrosion, anti-wax deposition, and high-temperature-resistant polyethylene pipes for oil recovery, comprising the following steps:

[0070] 1) In parts by weight, weigh 110 parts of PE100 high-density polyethylene, 5 parts of bismaleimide, 3 parts of styrene, 0.8 part of DCP crosslinking agent, and 0.015 parts of neodymium trioxide, mix well, and set aside;

[0071] 2) Inhale the uniformly mixed raw materials into the vacuum barrel with the suction system, turn on the barrel temperature regulator, control the temperature of the material in the barrel at 105°C, and then send the dried material into the polyolefin extruder Screw barrel; the polyolefin extruder adopts a gradual change type screw, and the screw compression ratio is 3.4:1;

[0072] 3) Adjust the parameters of the screw machine:

[0073] Adjust the temperature of each heating zone of the extruder barrel: Zone 1: 185°C; Zone 2: 205°C; Zone 3: 215°C; Zone 4: 215°C;

[0074] Adju...

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Abstract

The invention relates to a polyethylene liner tube, particularly to an anticorrosive, wax-proof and high-temperature-resistant polyethylene tube for oil extraction and a preparation method of the polyethylene tube. The anticorrosive, wax-proof and high-temperature-resistant polyethylene tube comprises the following components in parts by weight: 90-110 parts of high-density polyethylene, 1-5 parts of bismaleimide, 1-3 parts of styrene, 0.1-0.8 part of DCP (Dicumyl Peroxide) cross-linking agent, and 0.005-0.015 part of neodymium oxide; and the polyethylene tube is manufactured by a screw cylinder of a polyolefin extruder. The vicat softening point of the prepared polyethylene tube is at 135 DEG C; the polyethylene tube with the use temperature capable of reaching 130 DEG C is applicable to an oil extraction pipe in an oil well which is 2000-3000m deep; and compared with a modified nylon oil extraction pipe applied to the oil extraction pipe below 2000m, the polyethylene tube provided by the invention is characterized in that the cost is low and the acid resistance is good.

Description

technical field [0001] The invention relates to a polyethylene-lined pipe, in particular to an anti-corrosion, anti-wax, high-temperature-resistant polyethylene pipe for oil production and a preparation method thereof. Background technique [0002] With the rapid development of social economy, due to its superior processing performance and physical properties, the application and demand of plastic pipes in various social fields are increasing rapidly, and people's requirements for pipe performance are getting higher and higher. Therefore, the development of plastic pipes for The research on the functional masterbatch of plastic pipes, which makes plastic pipes have various special properties and reduces costs, has become an important technical issue facing the plastics industry. [0003] The oil extraction pipes used in oil fields are mostly made of steel pipes lined with polyethylene pipes. Due to the different oil field areas and oil well depths, polyethylene pipes are re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08K13/02C08K5/3415C08K5/01C08K3/22F16L9/12B29C47/92B29L23/00B29K23/00B29C48/92
CPCB29C47/92B29C2947/92895B29C2947/92904B29C47/0023B29C47/827B29C2947/92704B29C48/09B29C48/875B29C48/92B29C2948/92704B29C2948/92895B29C2948/92904
Inventor 刘俊卿
Owner 济南赛辰高分子材料有限公司
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