The natural gas resource is abundant in Qaidam Basin,including Tertiary oil-type gas in the west,Jurassic coal-type gas in the northern margin and Quaternary biogenetic gas,Neogenthermogenic gas and Carboniferous coal-type gas in the east of the Qaidam Basin.In recent years,Jurassic coaly gas in the northern margin of Qaidam Basin has achieved a breakthrough and great exploration potential.
Based on the analysis of natural gas geological conditions,summarizes the palaeo-uplift in the rich hydrocarbon sag area,extrinsic uplift-slope and late tectonic gas accumulation model,and evaluates the conventional natural gas resources in the northern margin of the basin with analogies and genetic methods,a total resource of 11 457.5×108m3.On this basis,combined with the current situation of exploration,the remaining resources and their distribution were clarified,and the amount of remaining natural gas geological resources was 10 671.28×108m3 is mainly distributed in the Eboliang-Gourd mountain block and eastern zone in front of Alkin Mountains.According to the research results,it is pointed out that the Eboliang -Lenghu tectonic belt,the eastern section of Alkin piedmont,and the Middle-Lower Jurassic depression-slope area are the favorable target areas for natural gas exploration in the northern margin of Qaidam Basin.
Ma Da-de, Yuan Li, Chen Yan, Zhou Fei, Wu Zhi-xiong, Lei Tao, Zhu Jun
. Geological conditions of natural gas,resource potential and exploration direction in the northern margin of Qaidam Basin[J]. Natural Gas Geoscience, 2018
, 29(10)
: 1486
-1496
.
DOI: 10.11764/j.issn.1672-1926.2018.09.009
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