Abstract:

Lacustrine clastic shoreline depositional package is common in the lacustrine system.Not only it has some particular lithofacies and genetic units which present relative deposi-tional processes,but also has special features on the shape of sand-dispersal system and internal architecture.A complete sequence of lacustrine clastic shoreline depositional package consists of deep lake and subaqueous gravity flow facies,transitional zone facies,low energy shallow lake and beach facies,high energy shoreline facies.Because the sand-dispersal system of lacustrine clastic shoreline depositional package is usually interfingering with deep lake mudstone,and the sandstone has good porosity and permeability,it is a excellent reservoir for oil and gas.