ZHJ型复合酸解堵技术研究

The ZHJ compound acidolysis stops up the engineering research

酸化技术是水井增注的重要手段之一,而酸液性能又是酸化技术中的关键。本文针对长庆油田陇东油区储层特征,室内对ZHJ复合酸各项性能指标进行评价,室内试验表明:这种酸液体系具有缓速能力强,穿透距离远,适用范围广的特点;现场实施结果证明该项解堵技术有效解决了通常采用的常规酸化、土酸(12%HCl+3%HF+水+添加剂)酸化虽然能够解除近井地带的堵塞,但处理半径较小,且对有机质堵塞无效果、缓速作用有限的问题。

The acidified technology is the water well increases one of note important means that but the acid liquor performance is also acidifies in technical the key. This article in view of the changqing oil field longdong oil region reservoir characteristic,the indoor carries on the appraisal to the ZHJ duplicate complex acids each performance index, the laboratory test indicated： This kind of acid liquor system has slow fast ability, the penetration range is far, applicable scope broad characteristic; The scene implementation result proved that this solution stopped up the technical effective addressing the conventional acidification which,the mud acid acidification measure usually used, although could relieve near well region the jamming, but the processing radius was small, and did not have the effect, the slow fast function limited question to the organic matter jamming.