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Non-isothermal inflow performance model for horizontal well in heavy oil reservoir with thermal recovery
Author(s): 
Pages: 62-66
Year: Issue:  4
Journal: ACTA PETROLEI SINICA

Keyword:  稠油油藏水平井蒸汽吞吐采油参数非等温流入动态数学模型;
Abstract: 将常规油藏水平井三维稳态势分布模式引入到水平井蒸汽吞吐开发油藏,以Marx-Langenheim加热理论为基础,把水平井筒处理成由若干个流量、温度不等的微元段线汇组成,建立了非等温油藏内渗流与水平井筒内变质量变温度管流耦合的流入动态模型.利用该流入动态模型,可以计算水平井注蒸汽后的地层参数,也可以模拟计算水平井筒在不同温度分布剖面下的产量和压力分布,分析流入动态的诸多影响因素,从而为优选采油参数提供了依据.计算实例表明:蒸汽吞吐水平井的流入动态受水平井筒的非等温状况影响较大.水平段首、尾两端温差越大,水平井筒压降就越大,产能也越低,水平段产量分布的对称性变差,指端产量远低于跟端产量.
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