关键词: 火山岩, 油藏, 开发效果, 孔隙结构, 非均质性, 裂缝, 动态分析

Abstract: Through comprehensive analysis on development of volcanic oil accumulation in Fenghuadian area,it was concluded that the volcanic reservoirs were increasingly complicated maily by four factors.1.the effect of multistage volcamic eruption on the reservoir,2.frequent variation of lithology in space;3.reorganization rsulted from subesquent surface weathering and the last is structural fracturc.it is obvious that the inhomogeneity of variable volcanic facies belt and complex reservoir space that have had a great effect on water injection responses.On the other hand,the uneven distribution and certain spreading direction of diageneic fractrue and structural fracture not only formed the passage for bottom water and injected water but also was the main factor that has shorten the dry-out production,accelerated the rise of composite water cut and lowered the rate of production.According to the reservoir characters mentioned above.We believed that rational rate of oil, production producing pressure drop and reservoir penetration would be quite important in improring the reservoirs' development effectiveness during the process of water injection.

Key words: volcanic rack, reservoir, development result, pore structure, inhamogeneity, fissure, dynamic analysis