石油钻采工艺Issue(6)：74-77,4.DOI:10.13639/j.odpt.2015.06.018
页岩气藏产量递减预测模型研究及应用
Production decline prediction modelling and application in shale gas reservoir
摘要
Abstract
Shale gas reservoir is usually developed by multi-fractured horizontal well, and stimulated reservoir volume dominates the gas rate as the main factor. For the heterogeneity of formation, both size and distribution of each fracturing area are not uniform. To investigate effect of heterogeneous fracturing on rate decline of multiple fractured horizontal well in shale gas reservoir, by introducing the parameters of different stimulated area's size and location in equations, a mathematical model based on horizontal well lfow equations is established. Analytical solution and rate decline curve for model are presented then. The lfow regimes are divided in gas rate dechlin curve, and curves characters of different un-uniform fracturing types are analyzed. The result shows that heterogeneity of fracturing affects production rate and linear lfow stage. With more heterogenous of fracturing, the gas rate becomes fewer and duration of linear lfow period is longer. Example analysis shows that the model can be used for production prediction of multiple fractured horizontal wells. This approach provides a theoretical basis on production lfow decline prediction.关键词
页岩气/压裂水平井/产量递减/渗流模型/产能预测Key words
shale gas reservoir/multi-fracture horizontal well/production decline/lfow model/procuction prediction分类
能源科技引用本文复制引用
李彦尊,李相方,徐敏,武文涛,张晓舟..页岩气藏产量递减预测模型研究及应用[J].石油钻采工艺,2015,(6):74-77,4.基金项目
国家自然科学基金“页岩油气高效开发基础研究”项目（编号51490654）。 （）
