辽河盆地黄沙坨火山岩油藏开发实践

在火山岩储集层研究基础上,对辽河盆地黄沙坨火山岩油藏进行开采动态及现场试验研究,并对火山岩油藏开发方式进行了探讨。指出,由于火山岩储集层非均质性极强,在火山岩油藏开发初期切不可贸然采用注水开发,应在实验井组中取得经验后,方可逐步推广;开发初期,实施加密井调整措施,可提高储集层动用程度,延长油藏无水开采期,改善开发效果;开发中期钻一定数量的水平井,可进一步提高单井产能,使油藏保持较长期的稳产、高产。这些经验是值得在开发火山岩油藏时借鉴的。

Development of Huangshatuo Volcanic Reservoir in Liaohe Basin

Based on the study of volcanic reservoir in Huangshatuo oilfield of Liaohe basin, the production performance study and field test of it are made, and the development scheme for volcanic reservoir is discussed. It is suggested that because the volcanic reservoir has very high heterogeneity, waterflooding process should not be adopted rashly in the early production period until obtaining experiences from clustered- well test; infill drilling and adjustment during the period of early production may enhance producing extent, prolong waterfree oil production period and improve performance response; a number of horizontal wells drilled during the mid-period of production may further increase the single well productivity and keep relatively long-term production stable and high. These experiences are worthy of use for reference for development of other volcanic reservoirs.