杜239块稠油油藏吞吐后期转蒸汽驱开发可行性研究

Feasibility analysis of converting steam flood in the later stage of huff and puff in Du 239 block heavy oil reservoir

曙光油田杜239块油藏投入开发二十余年,油井平均吞吐已达12个周期,处于"两高两低"的开发阶段,现开发方式难以进一步改善开发效果。结合油藏地质特点,从开发特点、剩余油分布规律研究入手,提出了适合油藏自身特点的蒸汽驱开发方案,可有效提高区块最终采收率。

Du239 block in Shuguang oilfield has developed for more than twenty years, oil well average huff and puff reached12 cycles, which is in the ' two high and two low' stage of development. The current development methods is hard to further improve the development effect. Combined with the geological characteristics, it is put forward suitable steam flooding development plan for reservoir own characteristics from the development characteristics and remaining oil distribution, which can effectively improve the ultimate recovery rate.