摘要
利用前苏联克雷诺夫油气垂直管流中的上升理论公式,计算了温五区块不同气油比下不同含水阶段自喷流压下限。分析了地层压力、气油比以及温度对原油粘度的影响,分析了储层中油气水三相渗流时的渗流阻力。研究表明,地层压力应保持在饱和压力以上,防止由于地层压力低于饱和压力造成地层原油粘度急剧增加,和由于油层脱气形成油气水三相渗流导致的油相渗透率降低和渗流阻力的增大。地层压力保持越高,油相流动能力越强,采油指数值越大,采油井生产能力越强。为此确定了温五区块不同油气比下不同含水阶段保持油井自喷所需保持的地层压力水平。
Flowing inferior limits at various water cut stages and with various GOR in Wenwu area were calculated using theoretical formula. The effects of formation pressure and GOR and temperature on oil viscosity were analyzed. Filtrational resistance in three -phase fluid flow in reservoir was analyzed. The study indicates that oil viscrease of fdtrational resistance, so the formation pressure should be kept above saturation pressure. Higher the formation pressure is, better oil phase flowing capability is; higher the production index is, better the oil well productivity. The formation pressures in various GOR, and with various water cut stages in Wenwu area were determined in order to maintain oil well flowing.
出处
《吐哈油气》
2007年第1期57-60,共4页
Tuha Oil & Gas
关键词
自喷流压下限
渗流
粘度
地层压力
blowing flowing pressure inferior limit
seepage
viscosity
formation pressure
