This agent was used in 6 wells, the skin coefficient of Ba48-39 was 0. 21, and that of Ba48-31 well was-1. 56, illustrating the improvement in reservoir protection by using RP-5.

• 该油层保护剂先后在巴48-39等6口井中进行了现场应用；其中巴48-39井表皮系数为0.；21；巴48-31井表皮系数为-1