岩性油气藏 ›› 2015, Vol. 27 ›› Issue (3): 127132.doi: 10.3969/j.issn.1673-8926.2015.03.020
• 油气田开发 • 上一篇
袁 淋1,李晓平1,李松岑2
YUAN Lin1,LIXiaoping1,LI Songcen2
摘要:
在利用水平井开发低渗水驱油藏的过程中,油井见水是制约其产量的一个重要因素。 基于Joshi 水平井产能分析理论,将水平井三维渗流问题简化为 2 个二维平面渗流问题,考虑启动压力梯度,利用保角变换方法分别获得了 2 个二维平面内的产量公式,再结合水驱油藏中非活塞式驱替过程油水两相渗流特征,最终求得了低渗水驱油藏中水平井产油量计算新公式。通过实例计算与对比发现,本文公式与水平井单相经典产能公式计算结果虽然均比实际产油量大,但是本文公式计算结果与实际产油量相对误差最小,为 2.94%,从而证明本文公式准确性较高、实用性较好。 此项研究为低渗水驱油藏水平井见水后产量预测提供了新的思路。
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