【摘要】 目前国内外气井产能试井方法在不断朝着简捷的方向发展,1986年就出现了修正等时试井的简化方法,大大地缩短了测试时间。但由于其可靠性和有效性是有针对性的,因此不能简单的套用已有的方法,必须对其进行科学的理解和符合实际的应用,否则将会引起较大的误差,甚至造成重大的决策失误。为了验证简化修正等时试井方法的适用性和可靠性,在长庆靖边气田选取10口典型井进行了对比分析。经过比较分析后发现,对于均质地层气井,简化修正等时试井确定的结果基本可靠;对于非均质地层气井,简化修正等时试井确定的结果偏大,且误差较大。在统计分析的基础上,提出“理想”绝对无阻流量的概念,靖边气田14口非均质气井的“理想”绝对无阻流量较实际绝对无阻流量偏大37.47%,利用此统计值对气井的理想绝对无阻流量进行必要的系统校正后,就可以得到能满足现场工程需要的结果,则气井真实的产能方程和绝对无阻流量便可确定。同时通过比较qAOF1和qAOF的大小,还可以分析储层的横向变化规律。更多还原

【Abstract】 Now both domestically and internationally gas well productivity testing demonstrates a tendency toward simplification. As early as in 1986 the simplified method of correction isochronal testing occurred and greatly shortened the time needed for testing. Due to the pertinence of its reliability and validity, simply copying the existing testing method may cause considerable error and even serious decision mistake, therefore correct understanding of the testing method and proper application should be stressed. For the purpose of verifying the applicability and reliability of simplified correction isochronal testing, ten (10) typical wells in Changqing Jingbian Gas Field were selected for comparative analysis. The analysis indicates that simplified correction isochronal testing is generally reliable for homogeneous formation gas well and as a contrast, testing outcomes for non-homogeneous formation gas wells tend to be too large and rather inaccurate. On the basis of statistic analysis, the concept of “ideal” absolute open-flow capacity is formed. “Ideal” absolute open-flow values of 14 non-homogeneous gas wells in Jingbian Gas Field are 37.47% larger than actual absolute open-flow. If the “ideal” open-flow value is corrected according to this statistic percentage value, satisfactory outcomes may be gained and true gas well productivity equation and absolute open-flow may be determined. Also, comparing q_ AOF1 and q_ AOF serves to analyze the lateral variation rule of reservoir.更多还原