西南石油大学学报（自然科学版）2011，Vol.33Issue(6)：113-116,4.DOI:10.3863/j.issn.1674-5086.2011.06.022
考虑高速紊流的含CO2火山岩气藏数值模拟
摘要
Abstract
Non-Darcy turbulence is highly likely to form in the well developed cracks in the volcanic gas reservior, so the Darcy law, suitable for the conventional gas reservoirs mostly with single media, doesn't apply to the volcanic gas reservoirs. Through the analysis of the flow experiment of volcanic gas reservoirs with CO2, and based on the fluid mechanics, this paper establishes the gas-water two-phase flow mathematical model in dual media under consideration of natural gas high-speed turbulence, and the flow law of gas in the model is in accord with the Foechheimer equation. Then the model is solved by using the finite difference method, and the numerical simulation program and software are programmed. The numerical simulation results of a single well in Changling Gas field show some differences under the consideration of high-speed turbulence, such as shorter time to stable yields, lower of the predicted final degree of recovery, the greater impact of high-speed turbulent with higher production pressure, and after the production pressure reached 8.9 Mpa, the effect decreased. When the actual production pressure was 6.65 Mpa, the predicted final degree of recovery decreased by 1.17%. Therefore, the impact of the high-speed turbulence has to be considered during the production of volcanic gas reservoirs.关键词
火山岩气藏/高速紊流/非达西/数值模拟/生产开发指标Key words
volcanic gas reservoirs/ high-speed turbulence/ non-darcy/ numerical simulation/ production and development index分类
能源科技引用本文复制引用
任东,童敏,汤勇,冉启全,董家辛..考虑高速紊流的含CO2火山岩气藏数值模拟[J].西南石油大学学报（自然科学版）,2011,33(6):113-116,4.基金项目
国家重大科技专项(2008ZX05016-001). （2008ZX05016-001）
