摘要
多油层合采时,由于层间压力及物性的差异,各油层对油井产量及含水率的贡献不同.论文从简单常见的油水两层模型入手,假定各油层地饱压差较大,油层为刚性水驱,基于达西定律,结合分层和全井的IPR曲线,推导出了全井的含水率与井底流压、含水率与产液量、含水率与产油量、产油量与产液量的关系式,并通过实例对这些关系式进行了分析讨论.论文虽以油水两层为例,但其研究思路、方法和所得结论可推广到含油气两相流条件下的多层油藏.
In commingled multiplezone producing wells, each pay may differently contribute to liquid production and water cut because of variation in pressure and petrophysics among different pays. From a simple two-_layer model of oil and water, several relationship expressions for the whole well can be derived from Darcy law and IPR curves of each pay and the whole well, such as water cut to flowing bottom pressure, water cut to liquid production, water cut to oil production and liquid production to oil production, assuming that difference between formation and saturation pressure is great, and that all pays are rigid water driving. These expressions are analyzed and discussed by using examples. The ideas, methods and conclusions in this paper, although based on the two-_layer model of oil and water, can also be used to multiplezone reservoirs with two-_phase flow of oil and gas.
出处
《中国海上油气（地质）》
2003年第2期118-122,共5页
China Offshore Oil and Gas(Geology)
关键词
多油层
合采
油井产液
含水特征
油井
multiple zone
commingled production
flowing pressure
liquid production
water cut
