CHARACTERISTICS OF FLUID INCLUSION AND NATURAL GAS ACCUMULATION IN THE FEIXIANGUAN FORMATION OF TRIASSIC, SICHAN BASIN

摘要

The finding of oolitic shoal gas pool in Feixianguan Formation of Triassic(OSGPF) is an important breakthrough after Carboniferous gas field. Large or middle size gas fields-Luojiazhai, Dukouhe, Gunziping, Tieshanpo, Puguang, Longgang et al-have been found in Sichan Basin. We reveals temperature-pressure condition of gas genetic development which stored in OSGPF and physical and chemical characteristics of underground fluid through the research on fluid inclusions. Samples selected from area of Luojiazhai, Tieshanpo, Dukouhe and Jinzhuping, which located on the north of Kaijiang-Liangping trough that developed in late Changxing stageearly Feixianguan stage.