安全低污染复合树脂炮眼封堵剂研究

STUDY ON A PERFORATION -PLUGGING AGENT OF COMPOUND RESIN WITH SAFETY AND LOW CONTAMINATION

赵修太 李鹏 邱广敏 赵明宸 隋春艳 彭绪勇

Zhao Xiutai Li Peng Qiu Guangmin Zhao Mingchen SuiChunyan Peng Xuyong

中国石油大学石油工程学院, 山东东营 257061 胜利油田有限公司东辛采油厂, 山东东营 257094

针对目前水泥浆封堵炮眼工艺风险性大、作业周期长、作业成本高及油层污染严重的问题,研制了一种复合树脂类炮眼封堵剂FD-1并对其性能进行了评价。该炮眼封堵剂由于加入了一定量的油溶性树脂和纤维,可在油中分散或溶解,因此对油层的污染较小;封堵剂具有较高的强度,与封口剂配合使用固结体的抗压强度可达16 MPa;具有较长的凝固时间,在施工过程中不会在井筒内凝固和留塞,施工安全;岩心流动实验表明,对不同人造岩心的封堵率均大于95%,油相渗透率恢复值超过50%。现场试验证明,可以满足油井炮眼和大孔道封堵的要求。

During plug of perforation, grout has disadvantages such as high risk, prolonged period of work and severe contamination of grout to reservoir, so a perforation-plugging agent (FD-1) of compound resin was developed. Due to some dissolvable fiber and oil-solubility substance were added to the grout, FD-1 has less contamination to the oil formation. It is proved to be better for plugging when it is used together with heal agent. With long hardening time and uneasy to freeze. The compressing intensity of FD-1 reached to 16 MPa. The agent do not plug on the well during the work. The plugging rate to different rock exceeds 95%. The recovery of oil permeability exceeds 50%. Applications of FD-1 shows that the agent adequate to plug perforation and big holes in well.

10.3969/j.issn.1000-7393.2005.02.014