【摘要】 油气井的产能在油气田的开发中具有重要的地位和作用,它是油气田开发方案设计、油气井合理配产的重要依据。目前确定油、气井产能的主要方法是稳定试井方法,即回压试井、等时试井、修正的等时试井和一点法试井。这些方法的不足点是测试时间长,而用不稳定试井确定气井产能,则极大地提高了确定气井产能的工作效率和经济效益。因此,研究用不稳定试井资料确定气井产能的方法具有重要的实际意义。文中讨论了用不稳定试井确定气井产能的三种方法的理论依据和实际意义、计算精度与应用条件、优点与不足,不同方法间的内在联系、共同点与区别点。在此基础上提出了用不稳定试井资料确定气井产能的新方法,即用压力恢复曲线法与压降曲线法相结合确定气井产能的新方法。算例表明了该法的可行性和精度的可靠性。更多还原

【Abstract】 The productivity of oil and gas well plays an important role in oil and gas field development, being a basis of design oil and gas field development plan and reasonable proration. Nowadays, the main method of determining oil and gas well deliverability is steady well test, that is back-pressure testing, isochronal testing, revisionary isochron test and single-point test. The demerit of these methods is long testing time. However, using non-stabilized well test method to determine the productivity of gas well, greatly improves the efficiency and economic benefit of assessing productivity. In the text, the theoretical basis and actual meaning of using three non-stabilized well test methods to determine the productivity of gas well are discussed. Meanwhile, its calculation precision and applicable condition, advantage and disadvantage, the inherent relation with some different methods, common point and different point are analysed. Based on these, the new method that pressure build-up curve associated with pressure fall-off curve to determining the productivity of gas well is proposed. The calculation example shows that feasibility of this method and reliability of accuracy.更多还原