Nylon material for petroleum lining pipe and preparing method of nylon material

A technology of nylon and inner lining, which is applied in the field of high-resilience acid-resistant and high-temperature-resistant nylon material for petroleum lining pipes and its preparation. Social benefits, dimensional stability, excellent resilience

Active Publication Date: 2018-05-29
SHANDONG DONGCHEN ENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the continuous exploitation of oil, the depth of oil wells has become deeper and deeper, and the environment of oil wells has become more and more complex. Oil inners made of ordinary high-density or ultra-high-density polyethylene or modified nylon 6 The liner can no longer meet the requirements of use
Specifically, as the depth of oil wells increases, the temperature of crude oil also increases. At present, the heat resistance of lined pipes made of high-density or ultra-high-density polyethylene cannot meet the requirements; the lined pipes made of modified nylon 6 , although heat resistance is good, but if the oil well environment is too complicated, especially when the crude oil is in an acidic environment and the temperature is high, the nylon 6 material is easily degraded, and the toughness of the material is greatly reduced. The liner made of nylon 6 is used here. It is easy to crack in this environment and cannot meet the requirements of use

Method used

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  • Nylon material for petroleum lining pipe and preparing method of nylon material
  • Nylon material for petroleum lining pipe and preparing method of nylon material
  • Nylon material for petroleum lining pipe and preparing method of nylon material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Firstly, Nylon 1012 and Nylon 6 resins were respectively added into a vacuum drum dryer, and solid-phase viscosity was increased at 160°C to a melt index of 0.3g / 10min, and moisture-proof packaging was carried out for use.

[0027] Then add 90 kg of tackified nylon 1012 resin, 10 kg of tackified nylon 6 resin, 5 kg of toughening agent EPDM-G, and 0.5 kg of compounding additives into the high mixer in sequence, first mix at low speed for 30 seconds, and then mix at high speed. After mixing for 3 minutes, discharge the materials for later use.

[0028] Set the temperature of each section as: feeding section 160°C, melting section 200-240°C, head section 240°C.

[0029] After the temperature of each section of the relevant extruder reaches the set temperature and the screw can be rotated by hand, after cleaning the equipment with nylon 6 raw material, add the mixed material into the extruder for mixing and extrusion, and the screw speed is 15Hz.

[0030] The strips are dr...

Embodiment 2

[0033] Firstly, Nylon 610 and Nylon 6 resins were respectively added into a vacuum drum dryer, and solid-phase viscosity was increased at 180°C to a melt index of 3g / 10min, and moisture-proof packaging was carried out for use.

[0034] Then 30 kg of tackified nylon 610 resin nylon 6, 70 kg of tackified nylon 6 resin, 30 kg of toughening agent EPDM-G, 2 kg of compounding additives, 10 kg of wear-resistant additive super high PE , then added to the high mixer in turn, mixed at low speed for 30 seconds, then mixed at high speed for 8 minutes, and then discharged for later use.

[0035] Set the temperature of each section as: feeding section 200°C, melting section 240-260°C, head section 260°C.

[0036] After the temperature of each section of the relevant extruder reaches the set temperature and the screw can be rotated by hand, after cleaning the equipment with nylon 6 raw material, add the mixed material to the extruder for mixing and extrusion, and the screw speed is 45Hz.

...

Embodiment 3

[0040] Firstly, Nylon 612 and Nylon 6 resins were respectively added into a vacuum drum dryer, and solid-phase viscosity was increased at 180°C to a melt index of 1.5g / 10min, and moisture-proof packaging was carried out for use.

[0041] Then 70 kg of tackified nylon 612 resin, 30 kg of tackified nylon 6 resin, 20 kg of toughening agent EPDM-G, 1 kg of compounding additive, and 5 kg of wear-resistant additive ultra-high PE were used in sequence. Put it into the high mixer and mix it at low speed for 30s, then mix it at high speed for 5 minutes, then discharge it for later use.

[0042] Set the temperature of each section as: feeding section 180°C, melting section 230-250°C, head section 250°C.

[0043] After the temperature of each section of the relevant extruder reaches the set temperature and the screw can be rotated by hand, the equipment is cleaned with nylon 6 raw material, and the mixed material is added to the extruder for mixing and extrusion, and the screw speed is 3...

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Abstract

The invention discloses a nylon material for a petroleum lining pipe and a preparing method of the nylon material. The nylon material is prepared from long-carbon-chain nylon resin, nylon 6, a flexibilizer, a compound additive and a wear-resistant additive. It is proved through experiments that the prepared nylon material for the petroleum lining pipe has good high temperature resistance, acid resistance, wear resistance and rebound resilience and excellent forming stability; the petroleum lining pipe prepared from the material is stable in size and excellent in performance, can meet the industrial standard and machining process of the petroleum lining pipe, and can meet the use requirements of the petroleum lining pipe in deep oil well depth, complicated environment and especially strongacidic environment.

Description

technical field [0001] The invention relates to a high-resilience, acid-resistant, and high-temperature-resistant nylon material for petroleum lining pipes and a preparation method thereof, belonging to the technical field of chemistry and chemical engineering. Background technique [0002] As a special product of the energy industry, petroleum plays an important role in my country's current national economic structure. Due to the influence of environment, soil, transmission medium and other factors, it is easy to cause pipeline wear, corrosion and leakage, and even the pipeline is scrapped, and the pipeline needs to be repaired or partially replaced. Wear and corrosion is one of the main causes of damage to metal pipelines in the petroleum industry, which greatly reduces the service life of pipelines and increases the cost of petroleum production. With the rolling development of oilfields, oil production has gradually entered the medium and high water cut period, and the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L77/02C08L51/04C08L51/06C08L23/06C08K13/06C08K5/00C08K9/06C08K5/526C08K5/20C08K3/04C08K3/30
CPCC08L77/02C08L77/06C08K2201/003C08K2201/014C08K2003/3009C08L2203/18C08L2205/035C08L2205/03C08L2201/08C08L2207/068C08L51/04C08K5/00C08K5/526C08K5/20C08L23/06C08K13/06C08K9/06C08K3/04C08L51/06C08K3/30
Inventor 刘建伟王朝进毕燕李继强陈萌郭延春
Owner SHANDONG DONGCHEN ENG PLASTIC
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