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方法在估算昌德致密砂岩气藏各地质时期供气量和扩散量的基础上，建立了昌德天然气三种运聚动平衡模式，进而对其各地质时期的剩余气量、赋存气量和累积赋存气量进行研究。目的对于准确估算昌德地区天然气储量及研究其形成历史具有重要意义。结果建立了天然气运聚动平衡模式。其中第一种模式．气藏储量增加．有利于气藏中天然气的聚集与保存；第二种模式．气藏储量既不增加也不减少；第三种模式，气藏储量减小，不利于天然气的聚集与保存。结论青山口期、姚家期和嫩江期是昌德气藏形成的主要时期；昌德气藏各地质时期的累积供气量远大于累积散失气量，是昌德气藏得以形成和保存的重要条件。
Methods Based on the estimation of gas supply and diffusion during each geologic period of Changde tight sandstone gas reservoirs, three modes of transport and balance of natural gas in Chand have been established, and their remaining gas reserves, The amount of gas storage for research. The purpose is of great significance for accurately estimating natural gas reserves in Changde and studying its formation history. As a result, a mode of transportation and accumulation of natural gas has been established. One of the first model. Gas reserves increase. Is conducive to the accumulation and preservation of natural gas in gas reservoirs; the second mode. Gas reserves neither increase nor decrease; the third mode, the gas reserves reduce, is not conducive to the accumulation and preservation of natural gas. Conclusions The Qingshankou period, the Yaojia period and the Nenjiang period are the main periods of the Changde gas pool. The cumulative gas supply of the Changde gas field during geological period is much larger than that of the accumulated gas lost, which is an important condition for the formation and preservation of the Changde gas pool.