裂缝性稠油油藏蒸汽吞吐产能预测模型A Model for Productivity Prediction of Fractured Heavy Oil Reservoir in Cyclic Steam Stimulation
何聪鸽;范子菲;许安著;方思冬;冀中原;
摘要(Abstract)：
针对裂缝性油藏为裂缝-孔隙型双重介质且加热区内地层温度为非等温分布,在常规稠油油藏蒸汽吞吐加热半径计算模型的基础上,通过引入加热区前沿温度,构建了考虑地层温度为非等温分布的裂缝性稠油油藏蒸汽吞吐加热半径计算模型,并基于天然裂缝等效渗透率张量理论,将裂缝性油藏变换成等效各向同性油藏,最终推导出裂缝性稠油油藏蒸汽吞吐产能预测模型。以某裂缝性稠油油藏为例进行了计算,结果表明,本文产能预测模型计算结果与裂缝性双重介质热采数值模拟计算结果基本吻合,从而验证了本文模型的准确性。敏感性分析表明,蒸汽吞吐加热半径是加热区前沿温度的函数,加热半径随前沿温度的降低而增大,产量随裂缝孔隙度的增加而增大。
关键词(KeyWords)： 裂缝性稠油油藏;蒸汽吞吐;加热半径;非等温模型;产能;渗透率张量
基金项目(Foundation): 中国石油集团公司重大科技专项(2011E-2504)
作者(Author): 何聪鸽;范子菲;许安著;方思冬;冀中原;
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DOI:
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