油水井王水酸酸化解堵技术及应用

酸化是油田的增产措施之一,通过采取酸化措施,有效地去除地层油路通道的堵塞。根据实验数据统计分析表明,常规酸化措施能清除地层堵塞物的30%-40%,从而改善和提高了地层的渗透能力,增加油井产能。但常规酸化通常受到储层岩性和堵塞物性质的制约,使得去除堵塞物效率低。特别是对于一些特殊岩性如变质岩、粗面岩、花岗岩,常规酸化效果较差。硝酸粉末酸化工艺技术是利用"王水"对所有的堵塞物几乎100%溶解。同时利用硝酸固体粉末腐蚀性弱、便于注入等特点,很好地解决了王水酸化的问题。

Application on Plugging Removal Technology Using of Agua Regia Acidification in Oil and Water well

Acidification oil production is one of measures adopted to acidification,effectively removing the plugging channel formation circuit.According to statistical analysis of experimental data show that the conventional measures acidification can plug the formation of the removal of 30 percent to 40 percent,thereby improving and enhancing the formation of infiltration capability and increase oil production capacity.However,conventional acidification usually reservoir lithology and plug the nature of the constraints,making removal of inefficient plug.Especially for some special lithology such as rocks,rough rocks,granite,conventional acidification less effective.Acidification nitrate powder technology is to use ＂aqua regia＂ to plug all the dissolution of almost 100 percent.At the same time using nitrate powder corrosive weak,for injection,and other characteristics of a good solution to the problem of aqua regia acid.