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介绍了利用正交试验进行数值模拟优化开发方案的思想与方法。所考虑的影响因素有：井数、采气速度、布井方式、单井配产以及高产与低产区各自的井网密度和布井方式。所计算的主要指标有：稳产期末、３０ａ末的采出程度与１５ａ的累积净现值。通过对长庆气田中区、南区和北区分别进行正交试验的气藏数值模拟计算，筛选出各因素间的最佳组合，并且分清了诸因素的主次关系，定量地描述出其影响程度。模拟结果为：对３０ａ末采出程度最敏感的影响因素是井数，其次是布井方式，采气速度对此的影响相对较小；对稳产年限最敏感的影响因素是井数，同时采气速度对此的影响也较大，布井方式对此的影响较小；对１５ａ累积净现值，敏感的影响因素是采气速度，井数是其次的影响因素，布井方式的影响较小。
The idea and method of using orthogonal experiment to optimize the development plan of numerical simulation are introduced. The factors considered are: well number, gas recovery rate, well pattern, single-well distribution, and their respective well pattern density and well pattern. The main indicators calculated are: the end of stable production, the end of 30a and 15a cumulative net present value. Based on the numerical simulation of gas reservoirs in the middle, south and north of Changqing gas field, the best combinations of the factors were screened out, and the primary and secondary relationships of the factors were clarified influence level. The simulation results are as follows: The most sensitive influencing factors on the end of 30a are the well number, followed by the well drilling method, and the effect of gas recovery rate on this is relatively small; the most sensitive factor affecting the stable yield is the well number, The influence of gas velocity on this is also larger, and the well drilling method has less influence on this; the sensitive influencing factor to 15a cumulative net present value is the gas production rate, and the number of wells is the second influencing factor. small.