论文部分内容阅读
本文在深入研究天然气在多气源条件下扩散机制的基础上,提出了多气源条件下天然气扩散量的估算方法,并将其应用于大庆长垣以东地区深层,建立了该区深层天然气损失的扩散地质模式,合理地确定出天然气发生扩散散失的地质时间,准确地估算了该区侏罗系和登二段两套气源岩扩散至地表的损失量,其结果约为1.27×10~(12)m~3,约占总生气量的6.54％,表明扩散作用是远景资源评价中不可忽视的重要因素。同时证明所建立的方法用于研究多气源条件下天然气的扩散损失量是可行的。
Based on the deep research on the diffusion mechanism of natural gas under multi-gas conditions, a method to estimate the diffusion of natural gas under multi-gas conditions is proposed and applied to the deep east of Daqing Changyuan. The deep natural gas Loss and diffuse geological model, reasonably determine the geologic time when natural gas is diffused and lost, accurately estimate the loss of two sets of gas source rocks diffused to the surface of the Jurassic and Deng 2 Member in this area, and the result is about 1.27 × 10 ~ (12) m ~ 3, accounting for 6.54% of the total gas production, indicating that diffusion is an important factor that can not be ignored in the long-term resource assessment. At the same time, it is proved that the established method is feasible to study the diffusion loss of natural gas under multi-gas source conditions.