Variation laws of pressure and production rate in horizontal well
Variation laws of pressure and production rate in horizontal well
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DOI：
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发表时间：
2005
影响因子：
2.5
通讯作者：
Liao Xiao-ping
中科院分区：
文献类型：
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作者：
Liao Xiao-ping
为了分析水平井的生产系统，需要对水平井筒内的流动进行处理。以往对水平井压降的忽略，导致水平井生产系统分析误差较大。本文考虑了井壁摩擦和加速度对水平井压降的影响，建立了地层渗流与水平井筒流动耦合的数学模型。得到了水平井压降和流入量分布的表达式。以海上某油藏水平井为例，计算分析了水平井井筒压力与产量的变化规律。为水平井生产系统分析提供了理论依据。
In order to analyze the production system of a horizontal well, it is necessary to deal with flow in horizontal wellbore. Pressure drop in horizontal well was ignored before and this results in bigger error in analyzing production system of horizontal wellbore. In this article, considering the effect on pressure drop in horizontal well by wall friction and acceleration, we set up a mathematical model coupling of the formation seepage flow and the flow in horizontal wellbore. So we got the expression of pressure drop in horizontal well and influx distribution. As an example we calculated and analyzed the valiation laws of wellbore pressure and production for a horizontal well in an offshore reservoir. This article presents a theoretical basis for analyzing production system of horizontal well.