东辛油田营8断块油藏精细构造解释和剩余油研究

Fine structural interpretation and remaining oil study of Ying8 fault block reservoir in Dongxin oilfield

为进一步挖掘老区潜力、提高油藏开发后期的采收率,以东辛油田营8块Es_2下亚段为例,通过对断裂系统和微构造的精细解释,结合地质研究和开发动态资料,确定了断块内部低级序断层的分级标志,认为断块区西部断层规模较小、东部断层发育,下部地层较上部地层断裂更为发育。精细构造解释和微构造研究有效解释了开发中的注采矛盾,为确定剩余油分布提供了依据。

For the purpose of potential development in the old areas and increasing oil recovery of the late development period, through detailed description and explanation of fault system in Ying 8 block area in Dongxin oilfield,with the combination of geology research and dynamic information,classification standard of regional faults is established.It is considered that faults are less developed in the west of study area, developed in the east fault,and more developed in lower sand layers than upper sand layers.Detailed structure interpretation and micro- structure study helps in solving conflicts between production wells and water injection wells.This may provide guidance and basis for confirmation of remaining oil distribution and deployment of development adjustment programs.