底水油藏水平井临界生产压差研究

在底水油藏水平井开发底水脊进原理的基础上,采用等值渗流阻力法,结合底水驱动垂向临界速度导出了底水油藏开发的临界生产压差计算模型及临界产能的计算方法。分析了垂向渗透率、油水密度差、水平井位置、油水粘度比以及底水锥进高度等参数对临界生产压差的影响,其结果对水平井开发底水油藏确定合理的生产压差具有指导作用,为底水油藏水平井产能设计提供了参考依据。

Research on horizontal well critical production pressure in bottom water reservoir

This article adopted equivalent filtrational resistance method and bottom water driving vertical critical speed to derive the calculation model of critical production pressure difference and the calculation method of critical production capacity in bottom water reservoir exploitation based on the mechanism of bottom water coning of horizontal wells in bottom - water reservoir. The author analyzed how these parameters as vertical permeability, oil and water density, horizontal well position, oil and water viscosity and bottom water coning height affect critical production pressure difference and its result will be of great significance to confirm reasonable production pressure for horizontal well bottom water reservoir exploitation and provided reference frame to production capacity design.