M30油藏长8储层见水规律及治理对策研究

Research on water seepage law and treatment measures of Chang 8 in M30 reservoir

M30油藏在开发过程中,见水矛盾突出,以裂缝型见水为主。通过油水井双向调控,逐步形成周期注水+微球调驱技术、水平井找堵水技术、冲砂酸化补能技术,其中周期注水+微球调驱技术更适应于孔隙-裂缝渗流单元,水平井化学堵水单井日增油效果突出,冲砂酸化补能技术的分段补能效果优于笼统补能。

During the development process of M30 reservoir,the contradiction of water breakthrough is prominent,with fracture type water breakthrough being the main type.Through bidirectional regulation of oil and water wells,periodic water injection+microsphere profile control and displacement technology,water plugging technology of horizontal well,and sand flushing and acidification energy replenishment technology have gradually been formed.Among them,periodic water injection microsphere profile control and displacement technology is more suitable for pore fracture seepage units,and the daily oil increase effect of single well chemical water plugging in horizontal wells is outstanding.The segmented energy replenishment effect of sand flushing and acidification energy replenishment technology is better than general energy replenishment.