Because of the action of fault zones, the marlite fracture zone in the 4th Shahejie Formation in Wangjiagang Oilfield is well developed, forming the fractured reservoirs.

• 摘要由于断裂带作用，胜利油田王家岗地区沙四段泥质灰岩段裂缝较发育，形成裂缝储层。