Reservoirs in Eh2 in the east of Nanyang Depression is essentially of delta front subfacies depositional system, reservoir physical property is dominated by fine sandstones and siltstone.

• 南阳凹陷东部核二段储层基本为三角洲前缘亚相沉积体系,储层岩性以细砂岩和粉砂岩为主。