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为从不同角度评价松辽盆地深层天然气的勘探潜力，本文从已经获得的勘探成果出发，对松辽盆地北部深层勘探程度最高的徐家围子—莺山断陷区天然气的勘探潜力用齐波夫方法进行了统计预测，结果表明，区内仍然有较大的勘探潜力，剩余的待发现储量估计在860×108m3~4100×108m3，储量超过100×108m3的气田（藏）（1~8个），储量超过10×108m3的气田（藏）22~86个。整个松辽盆地北部深层天然气的勘探潜力应该更为可观。

APPLICATION OF ZIPF′S LAW IN PREDICTING THE NATURAL GAS RESERVES IN XUJIAWEIZI-YINGSHAN FAULT DEPRESSION OF SONGLIAO BASIN

In order to evaluate the exploration potential of the deep natural gas in Songliao Basin from different angles, the exploration potential of the deep natural gas in Xujiaweizi—Yingshan fault depression with the highest degree of prospecting in the north part of the basin was counted up and predicted by use of Zipf′s law according to the exploration achievements obtained. The result shows that this region is still of relatively large exploration potential, the residual undiscovered gas reserves being estimated at 86×109m3 at the least, at 410×109m3 at the most and at 256.4×108m3 with much possibility; and about 4(1~ 8) oil and gas fields or reservoirs(each has reserves of more than 10×109m3) and 22 ~ 86 oil and gas fields or reservoirs(each has reserves of over 1000×106 m3) will be able to be found out. Therefore the exploration potential of the deep natural gas in the whole North Songliao Basin should be more considerable.