水平井酸化措施后的产量公式研究

Study on production formula of horizontal well after acidification

酸化水平井的产量计算对于促进油气资源的高效开发具有十分重要的意义。本文运用等值渗流阻力法以及同心圆复合油藏径向流理论,将水平井三维渗流等效为3个二维渗流,推导出了水平井酸化措施后的产量计算公式。结合实例,针对未酸化水平井的产量计算,与其他公式的计算结果进行对比分析,初步验证了该公式的正确性。进一步结合水磨气田某水平气井的生产测试数据,验证了酸化后水平气井的产量计算公式,证明了公式的实用性。

Production calculation of horizontal well after acidification is of great significance in the efficient development of oil and gas resources.Based on equal seepage resistance method and the radial flow theory of concentric circles,the3-D seepage of horizontal well is equaled to three2-D seepage problems,the production formula is finally derived of horizontal well after acidification.After that,based on data in reference literature,the accuracy of formula is preliminarily improved.Furthermore,one horizontal well case in Shuimo gas reservoir is studied,the feasibility of formula is further certified.