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发明授权
CN105602538B 一种自生土酸、其制备方法及其应用 有权

一种自生土酸、其制备方法及其应用
摘要：
本发明公开了一种自生土酸、其制备方法及其应用，属于油气田开采技术领域，其组成为下述按质量百分比计的组分：乙醇30%‑60%、叔卤烷20%‑30%、四丁基氟化铵10%‑30%、催化剂：10%‑30%，余量为水，共计100%；本发明的自生土酸，在高温条件下生酸能力强，其在130℃条件下，也具有良好的生酸能力；用交替工艺，注入地层中，在地下碰撞后生酸，在地面上各种溶液的pH值呈中性，所以对地面管道腐蚀小，这种交替注入工艺能让这些注入液在地层的深处产酸土酸，实现深度解堵目，岩芯在经过本发明的自生酸处理后渗透率可以提高14倍以上，能够有效实施酸化解堵作业。
摘要（英）：

The invention discloses a self-generating mud acid, and a preparation method and an application thereof, and belongs to the technical field of oil and gas field exploitation. The self-generating mud acid comprises, by mass, 30-60% of ethanol, 20-30% of tertiary haloalkane, 10-30% of tetrabutylammonium fluoride, 10-30% of a catalyst, and the balance of water, and the sum of mass percentages of all above components is 100%. The self-generating mud acid has strong acid generating ability at a high temperature, and also has good acid generating ability at 130DEG C; the self-generating mud acid is injected to stratum through an alternative process, and bumps underground to generate an acid, and the pH values of all solutions aboveground are 7, so the corrosion to ground pipelines is small, and the alternative injection process makes above injection solutions generate mud acid in the deep place of the stratum in order to realize deep plug removal, and the permeability of a rock core processed through the self-generating acid in the invention increases by 14 times or above, so the acidifying plug removal work is effectively enforced.

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