十屋油田SN17区块注采方案优化研究

The Study of Optimization of Injection-Production Plan in Block SN17, Shiwu Oil Field

十屋油田SN17区块为低孔-特低孔、特低渗储层,自开展注水试验井组以来,注水压力高,注水量低,注水不见效。针对其自然产能低、天然能量微弱等特征,2012年投入水平井SN17P1的试验生产,裸眼完钻并对营Ⅰ5号层进行分段压裂。该水平井的投产初步证明了地层间较好的连通性。为了进一步加强对十屋油田SN17区块的研究,以达到优化注采方案,提高油气产量的目的,根据对区块内油井生产层位和潜力层位的分析,结合历史生产情况,对SN17区块进行注采方案的探索,以期达到更加合理的生产效果。

Block SN 17 in Shiwu oilfield is characterized as extremely low porosity and permeability reservoir. Since the injection test well group conducted, Block SN 17 has been working with high injection pressure and low water injection. The injection is not effective. In view of its low natural capacity and low natural energy, horizontal directional well SNI7P1 which finish barefooted and staged fractured in Ying I 5 was put into production test in 2012. The commissioning of SNI7P 1 proved the existence of the stratigraphic connectivity. In order to get a better understanding of Block SNI7 and to optimize the injection-production plan, researches have been done to get a better production effect.