基于應(yīng)力敏感的天然裂縫性頁(yè)巖氣藏雙孔模型解的結(jié)構(gòu)
[Abstract]:In view of natural fractured shale gas reservoir, the production problem of constant production under three kinds of outer boundary conditions (infinity, constant pressure, sealing) and internal boundary condition is studied. A well test analysis model for unstable percolation considering stress sensitivity and analytical adsorption is established. The linearized model is first linearized, then the exact solution of dimensionless reservoir pressure in Laplace space is obtained by perturbation method and Laplace transform. Finally, according to the similarity structure theory of the solution, the steps of solving the solution structure of the model are given, and the similarity kernel functions under three kinds of outer boundary conditions are defined, and the similarity structure between the exact solutions of the model under the three outer boundary conditions is found. This research not only provides convenience for compiling well test analysis software and improves calculation efficiency, but also has important significance for studying the theory of shale gas reservoir seepage flow, and also provides a new method for solving the seepage model of shale gas reservoir.
【作者單位】: 西華大學(xué)理學(xué)院應(yīng)用數(shù)學(xué)研究所;北京東潤(rùn)科石油技術(shù)股份有限公司;
【基金】:四川省科技廳2015年第一批科技計(jì)劃項(xiàng)目(基本科研-重點(diǎn)研發(fā))(2015JY0245) 四川省教育廳自然科學(xué)重點(diǎn)項(xiàng)目(12ZA164);四川省教育廳自然科學(xué)重點(diǎn)項(xiàng)目(15ZA0135)
【分類號(hào)】:TE371
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