王庄油田蒸汽吞吐开采储层变化规律研究

Study on variance regularity of reservoirs in steam stimulation of Wangzhuang oilfield

我国众多的稠油油藏主要采用注蒸汽吞吐方式开采。研究表明,当高温、高压、高pH值蒸汽介质注入储层后,会导致矿物溶解、粘土转化、新生矿物及结垢沉淀产生等一系列变化。通过数模及物模实验,揭示出了王庄油田蒸汽吞吐过程中储层物性的变化规律。实验结果对稠油油藏注蒸汽吞吐开采具有指导意义。

Stem stimulation has been carried out by a large number of heavy oil reservoirs in China and the research indicates that the injection of steam medium with high temperature,high pressure and high PH value into reservoirs will lead to a series of changes: mineral dissolution,clay transformation,new minerals and precipitation fouling. Through numerical simulation and physical simulation,the variance regularity of reservoirs in steam stimulation of Wangzhuang oilfield has been revealed. The simulation results will provide useful guidance for steam stimulation of heavy oil reservoir.