Finding
Horizontally,humic gas and mixed gas easily accumulates in the area where there are discordogenic faults and the area outside the pinch-out boundary of Fengcheng formation,whereas sapropelic gas are mainly near to the pinch-out boundary of Fengcheng formation.
Paper
Identification of natural gas types and analysis on its distribution rules in Permian in Block No.5-8 of northwest margin of Jungar Basin
Citations: 3
Full textAbstract
The genetic types and distribution rules of Permian natural gas in Block No.5-8 of northwest margin in Junggar Basin are determined by natural gas components and stable carbon isotopes with the use of various charts and discrimination criteria.The result shows that natural gas in Permian of studied area is organic gas and it is further classified into 3 types: high matured sapropelic gas coming from Fengcheng formation,humic gas coming from Jianuhe formation and mixed gas coming from both of the above.Vertically,sapropelic gas mainly accumulates in Upper Permian,while humic gas mainly distributes in Lower Permian.Horizontally,humic gas and mixed gas easily accumulates in the area where there are discordogenic faults and the area outside the pinch-out boundary of Fengcheng formation,whereas sapropelic gas are mainly near to the pinch-out boundary of Fengcheng formation.
Authors
W. Wei-ming
Journal
Petroleum Geology & Oilfield Development in Daqing