The pools of sandlens in the third section of Shahejie Formation in Niuzhuang sub-depression were analyzed.
对东营凹陷牛庄洼陷沙三段砂岩透镜体油藏的成藏过程进行了分析，研究了岩性油气藏的成藏机理。
2
Sandlens reservoirs and lithologic reservoirs which the underwater distributary channel sand cut by fault develop in syncline area.
向斜区主要发育水下分流河道被断层截切的断层岩性油藏和砂岩透镜体油藏。
3
The mode of fluid flow is discussed. It is believed that there may be both lateral and vertical flows in the sandlens under the overpressure condition.