油田开采进入中后期,储层物性差,低渗、低压、孔隙型砂岩油藏,很容易结垢堵塞,有些储层泥质含量很高,随着原油的开采向井口移动沉积膨胀,堵塞裂缝和油层,这样复杂脆弱的油气储层最容易受到伤害。钻井、完井、采油、增产、酸化压裂、修井等各种作业中都会导致储层污染伤害。要解除这样的储层伤害,单靠常规酸化和活性物吞吐治理并不理想,常规酸化由于反应太快很难达到油层深部,解除裂缝堵塞很难见效。开发了一种新型多氢酸体系,可以有效的综合治理储层伤害。 In the middle and later stages of oilfield development, reservoirs with poor physical properties, low permeability and low pressure and pore sandstone reservoirs are prone to fouling and clogging. Some of the reservoirs have very high clay content. As the crude oil moves toward the wellhead, sedimentation expands and blocks cracks And the reservoir, so complex and fragile reservoirs are the most vulnerable. Drilling, completion, oil recovery, stimulation, acid fracturing, workover and other operations will lead to reservoir pollution damage. To relieve such reservoir damage, conventional acidification and active huff and puff treatment are not ideal alone. Conventional acidification is hard to reach deep in the oil reservoir due to the reaction, and it is very difficult to eliminate the clogging of the crack. Developed a new type of hydrogen acid system, which can effectively deal with reservoir damage.