This paper studied the harmonization of CAS27:Production of Oil and Gas with IFRS6:Exploration for and Evaluation of Mineral Resources,compared the scope frame and contents of them,and discussed the strat- egies of international harmonization of Chinese oil and gas accounting standard based on the international har- monization situation of CAS27.

With the construction of oil and gas pipelines,despite of a variety of anti-corrosion and preventive measures,the pipeline leakage still occurs.

It is difficult for China to recognize, measure, record and report the production activity of oil and gas industry.

The study of oil and gas accounting in China started in the 1980's, which is, on the whole, divided into blankness period before the 1980's, the translation period of the 1980's to the middle 1990's, and deeply systematic research period after the middle 1990's.

Oil and natural gas are the national important energy resources.

Based on the factors including supply and demand,transportation,cataclysm,economy and environment,oil & gas security pre-warning index system was established.