PC-300、PC-400油管内涂层的防蜡实践与认识

PRACTICE AND COGNITION OF PARAFFIN INHIBITION IN PC-300 & PC-400 INTERNAL COATING TUBING

介绍了 PC- 30 0、PC- 40 0内涂层油管的防蜡机理和技术性能、特点。PC- 30 0、PC- 40 0涂层选用具备优良防蜡性能的酚醛树脂和环氧 -酚醛树脂以及具有优良的化学稳定性的填料和助剂 ;以过硬的热清洁、喷砂预处理技术 ,达到对喷涂表面彻底清洁并得到一定的锚纹度 ,使涂料与管体表面有良好的粘附力 ;高压无气喷涂 ,保证涂料的良好雾化和均匀成膜 ;微机控制的工程炉 ,保证了湿膜溶剂的均匀挥发和良好固化 ;PC- 30 0、PC- 40 0内涂层具有良好的物理机械性能和耐化学腐蚀性能 ,在自喷井、抽油井上的防蜡试验与推广应用均取得较好效果。

This paper introduces the paraffin inhibition mechanism and technical characteristics of the PC-300 and PC-400 internal coating tubing. The PC-300 and PC-400 internal coating is produced by use of phenolic resin and epoxy phenolics which are with better paraffin inhibition property, as well as stuffing and additive agent which are very stable in chemistry property. While conducting spray coating, the advanced heat cleaning and sandblasting preprocessing technique is also adopted, which can engender strong adhesive force between the coating and the pipe surface. The high pressure and gas free spray coating technique ensures the excellent atomization of the coating and the well-proportioned layering. The engineering stove controlled by computer ensures the even volatilization and good solidification of the wet film solvent. The PC-300 and PC-400 internal coating is with better physical and mechanical property as well as better chemical corrosion resistance property, and good effect has been achieved when conducting paraffin inhibition test and popularization both in natural flow well and in pumping well.