深层低渗透复杂断块区剩余油分布研究

Remaining oil distribution for complex fault blocks in deep low-permeability reservoir

随着深层低渗透复杂断块油藏进入特高含水开发后期,剩余油富集区规模变小,低序级断层控制形成的剩余油成为研究重点。为提高低序级断层识别精度,更好地挖潜断层控制的剩余油,以濮城油田深层低渗透油藏复杂断块区文90-濮85-文213断块区为主要研究目标,开展了精细构造研究及储层评价,总结了断块区断层剖面组合样式,指导复杂断块构造连片解释,明确各构造单元构造样式,提高小断层遮挡剩余油识别精度,为深层低渗透复杂断块区剩余油挖潜提供技术支撑。

As the complex fault block reservoirs enter the later stage of extra-high water cut development,the scale of the remaining oil enrichment area becomes smaller,and the remaining oil formed by the control of low-sequence faults becomes the research focus.In order to improve the identification accuracy of low-sequence faults and better extract the remaining oil controlled by faults,the research take the complex fault block Wen90-Pu85-Wen213 in the deep low-permeability reservoir of Pucheng Oilfield as the main research objective.Fine structure research and reservoir evaluation was carried out,summarize the combination style of fault section in fault block area for guiding the interpretation of complex fault block.The structural pattern of each structural unit is defined to improve the identification accuracy of remaining oil of small fault occlusion.The technical support is put forward for excavating the remaining oil potential in the deep low-permeability complex fault block area.