微胶囊技术在水井暂堵酸化中的应用

Application of Microencapsulation Technology in Waterwells' Temporary Blocking Acidification

制备了微胶囊暂堵剂ZD-D,并对其水溶性、酸溶性、悬浮液分散性进行性能评价,利用暂堵剂ZD-D进行暂堵酸化试验,采用注水井暂堵酸化工艺技术,现场试验结果表明,ZD-D暂堵剂能解决水井单层突进的矛盾,且不会引起储层二次伤害,还能提高酸化效果。

Microcapsules containing temporary blocking agent ZD - D was prepared. The properties such as water solubility, acid solubility, dispersion of suspended liquid were evaluated. The experiments on temporary blocking acidification were carried out with temporary blocking agent ZD -D using injection wells temporarily blocking acidification technology. The on-site test results showed ZD - D temporary blocking agent could solve the problem of well monolayer breakthrough, and did not cause the secondary damage to reservoir and could improve the acidification.