多功能环保酸的制备与性能评价

Preparation and Performance Evaluation of Multifunctional and Environmental Acid

徐太平 李 栓 周京伟 张书荣

XU Taiping，LI Shuan，ZHOU Jingwei，ZHANG Shurong

为了实现高效、快速、均匀酸化，达到深部解堵、延长酸化有效期的目的，制备了有机多元酸YJS-1、转向剂 GX-2、高效缓蚀剂GH-X，并将其与盐酸、氢氟酸和水混合制得多功能环保酸DHS-1。考察了DHS-1的解堵性 能、螯合性能、破胶性、腐蚀性、转向性等，并在新疆塔里木盆地进行了现场应用。实验结果表明，配方为10% HCl+2% HF+10%有机多元酸YJS-1+6%转向剂GX-2+0.5%高效缓蚀剂GH-X的DHS-1，可有效溶解堵塞物而不 过度溶蚀及破坏岩石骨架，与黏土矿物反应时有良好的缓速性能，具有强溶蚀、深穿透、抑制二次沉淀、低腐蚀、 无残渣、有效转向及易生物降解的优良性能。现场应用结果表明，与常规酸化相比，酸化流程简化，成本降低，增 产增注效果明显，平均酸化有效期大于200 d。

In order to achieve the goal of high efficiency，fast and uniform acidification，deep plugging removal and prolong the period of acidizing validity，organic polyacid YJS- 1，steering agent GX- 2 and high efficiency corrosion inhibitor GH- X were prepared. Then multifunctional and environmental acid DHS-1 was prepared by mixing YJS-1，GX-2，GH-X，hydrochloric acid， hydrofluoric acid and water. The blockage removal performance，chelating performance，glue breaking property，corrosiveness， steering property of DHS-1 were investigated. Finally DHS-1 was applied on site in Tarim Basin，Xinjiang. The experiment results showed that DHS- 1，whose formula was 10% HCl，2% HF，10% YJS- 1，6% GX- 2，0.5% GH- X，could effectively dissolve the blockage without excessive dissolution and avoid destroying the rock skeleton，and had a good slow performance during reacting with clay mineral. It had excellent performances of strong dissolution，deep penetration，inhibition of secondary precipitation，low corrosion，no residue，effective steering and easy biodegradation. The field application results showed that compared with conventional acidification，the acidification process was simplified，the cost was reduced，the effect of increasing production and injection was obvious，and the average period of acidification was more than 200 days.

10.19346/j.cnki.1000-4092.2021.02.010