THE GEOCHEMICAL CHARACTERS OF NATURAL GAS IN THE WELL YINGNAN 2 IN TARIM BASIN
塔里木盆地英南2井天然气地球化学特征

The natural gas in well Yingnan 2 is mostly composed of hydrocarbons. As heavy hydrocarbon is higher, this kind of natural gas is regarded as wet gas. The content of nitrogen in gas is high,while carbon dioxide is minor. The characters of carbon isotope indicates that it belongs to high or over-mature sapropelic source rock-derived gas. Further more this article studies the reason why wet gas and higher of nitrogen are formed.