摘要
基于水平段热物性参数计算模型,利用实际气体状态方程、Buckley-Leverett理论和复变函数理论得到注过热蒸汽水平段加热半径沿程分布模型。研究了加热半径沿程分布规律和不同因素对过热度、加热半径沿程分布的影响。研究表明:加热半径沿程分布呈"U"型;注汽速度增加,过热度沿程下降变缓,加热半径基本不变;周期注汽量越大,加热半径越大,过热度沿程不变;水平段越长,过热度沿程降低越慢,但指端过热度降低。模型对优选过热蒸汽注汽速度、周期注汽量和过热度具有重要意义。
Based on a calculation model of thermal parameters, by using the equation of state of real gas, theory of Buckley Leverett and theory of complex function, heating radius can be calculated considering seepage in reservoirs. Researchers studiedthe distribution of heating radius and influential factors of the degree of superheat and heating radius. It isshown that the shape of heating radius distribution is nearly to ‘U＇ ; the faster of injection speed, the slower ot aegree ot superheat decline, and the radius shows no change; the higher of the cyclic superheated steam in- jection, the larger of heating radius, and the degree of superheat shows no change; the longer of horizontal well, the slower of degree of superheat decline, but the lower of degree of superheat in finger tip. The calculation model is important in optimizing theinjection speed, cyclic superheated steam injection and degree of superheat.
出处
《北京石油化工学院学报》
2016年第3期13-17,共5页
Journal of Beijing Institute of Petrochemical Technology
基金
国家科技重大专项(2011ZX05024-002-006)
关键词
过热蒸汽吞吐
加热半径分布
理论模型
保角变换
水平井
cyclic superheated steam stimulation
heating radius distribution
theoretical modelconformal transformation
horizontal well
