Although the exploration level of oil and gas resources in the northern Songliao Basin was relative high, there were much undiscovered oil and gas resources.

松辽盆地北部的油气勘探程度虽然较高，但仍然有一些尚未发现的油气资源。

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If estimates of undiscovered resources and future improvements in technology are included, reserves are likely to last well into the next century.

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The North Slope natural gas hydrates make up 11.5 percent of the volume of gas within all other undiscovered, technically recoverable gas resources in the United States -- frozen or not, the USGS estimated.

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