In this paper, the affects of temperature and ultraviolet light on the stability and mildewproof effect of sorbic acid and ethyl-p-hydroxybenzoate used as food preserving agent, was studied.

Aimed at Liaohe heavy oil reservoirs, a new type of high temperature fleeing proof chemical agent FPJ was developed by the research of foamability, foam stability and sealing characteristic.

The advantage of organic heat -carrying agent is that it can be heated to a higher temperature with a lower vapor pressure and a better thermal stability.