Blowing agent can be used in oil field, concrete, rubber, plastic ... bubbles by the single bubble foam. The essence of foaming agent is its surface activity. No surfactant effect, we can ... strong bubbles, long life period of liquid level, low surface tension, high-temperature resistance and good compatibility with formation water, so ... mm)>1305min (mm)>120Life period of liquid level (min)≥30 Blowing Agent