The exploration practice of the west slope of the Liaohe Depression has veri-fied that a larg area of hydrocarbon enrichment can be formed on the slopebelt. There are several big oil and gas pools such as rolling anticline

buriedhill

turbidite sandbody

thickened oil zone

overlap belt and fault blocks overthere. There are four favourable conditions for hydrocarbon accumulation: a.The slope that depressed first and then declined is rich in oil source andfull filled. b.Multi-source and multi-stage huge sandbody associated with uplift isfavourable for hydrocarbon accumulation. c.The formation of oil and gas pools is contrlled by two kinds of normalfaults that are parallel to the slope. d.The extensively regional caprocks serve as a good preservation to oil andgas pools on the slope.