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针对孤岛油田部分油层污染为无机物和有机物混合堵塞 ,开发出一种 HA- PA热酸深部解堵剂 ,它由 HA热化学处理剂和 PA缓速酸组成 .HA热化学处理剂是以亚硝酸盐和铵盐为基础的反应体系 ,反应后能放出大量的热能和气体 .PA酸主要由磷酸 +氟化铵组成 ,它的溶蚀率高 ,缓速性能好 ,对设备管线腐蚀小 ,能有效解除地层深部堵塞 .室内研究和现场试验表明 ,HA热化学处理剂和 PA酸配合使用可有效解除地层中的有机物和无机物堵塞 ,对地层伤害小 ,解堵增注效果好 .还介绍了该剂的配方原理、配方筛选及其性能评价和现场应用效果 .
Aiming at the oil and gas pollution in some oil fields of Gudao Oilfield, the HA-PA thermal acid deep plugging agent is developed by the mixture of inorganic and organic substances, and consists of HA thermal chemical treatment agent and PA retarded acid, Nitrate and ammonium salt-based reaction system, the reaction can release a lot of heat and gas. PA acid mainly composed of phosphoric acid + ammonium fluoride, its high corrosion rate, retarder performance is good, the corrosion of the pipeline equipment can be small, can Which can effectively relieve the deep blockage of the formation.It has been proved by indoor research and field experiments that the combination of HA thermal chemical treatment agent and PA acid can effectively eliminate the clogging of organic and inorganic substances in the formation, The formulation of the agent principles, formula screening and performance evaluation and field application results.