摘要
由于重质芳烃树脂的油溶性好 ,与地层的吸附能力强 ,用它配成的修井暂堵剂YZD驱替后 ,对水相的暂堵率达到 95 % ,油相渗透率恢复值可达 80 %以上。实验中考察了树脂浓度、注入量、岩心渗透率、返排驱替液量对暂堵和解堵效果的影响 ,还考察了加入YZD的入井流体对岩心渗透率恢复值的影响。用该堵剂对孤东采油厂的 1 0口井进行试验 ,结果表明 :作业成功率 90 % ,暂堵剂不仅具有较好防漏保护作用 ,而且有较好的增油降水作用。
As heavy aromatic hydrocarbon resin has a good oil-soluble and strong adhesion with the downhole,temporary plugging agent Y2D composed of heavy aromatic hydrocarbon resin can effectively protect well loss with the rate of plugging water over 95% and the permeability resumption of 80% above.The effective factors containing resin concentration,injected dosage,the core permeability,returned liquid to effect temporary plug and displug were tested.10 wells field test results showed the experience succeessful rate was 90%.Y2D has a good protect effectiveness as well as decreasing water loss and increasing oil production.
出处
《石油与天然气化工》
CAS
CSCD
北大核心
2000年第5期261-263,共3页
Chemical engineering of oil & gas
关键词
暂堵剂
重质芳烃树脂
修井
油层保护
temporary plugging agent,heavy aromatic hydrocarbon,well repair,oil lay protection
