Abstract: Liquid samples of oil reservoirs collected for PVT analysis were often degassed. How to process the PVT analysis data of the degassed liquid samples in order to obtain the properties of the undegassed reservoir liquid and to make the uneffective samples effective? The answer is to recover the PVT data of the degassed samples to the original for mation condition according to the different regulations. The recovered PVT data can be used in the exploration and develop-ment of the oil and gas reservoirs. Practice showed that this method is successful.

Key words: Degas, PVT samples, Polynomial, PVT data, Recovery processing