摘要
建立以天津市滨海新区塘沽地区馆陶组孔隙性地热热储为研究区域的概念模型和数学模型,利用TOUGH2软件对533km^2区域内的20眼地热井的开采历史数据进行了数值模拟,计算结果与监测数据吻合较好。在此基础上,对单井开采模式下馆陶组热储层未来5年内温度场和压力场的变化趋势进行了预测;并针对下降趋势制定了回灌方案,分析不同回灌量对热储层温度场和压力场的影响程度。结果表明:单井开采模式下,未来5年内研究区水位年平均下降3.4m;当回灌率分别为60%和100%时,研究区年均水位相应下降1.3m和0.2m,有效缓解了单采模式下研究区内的水位下降速率。
Both conceptual and three-dimensional numerical models for the porous-medium Guantao（Ng） geothermal reservoir were set up, which were used for modeling mass flow and temperature histories of 20 production wells in the study region consisting of an area of 533km^2 in Tanggu, Tianjin Binhai Area using TOUGH2. Relatively good agreements were obtained between the measured and computed pressure profiles. Based on this, pressure and temperature distribution of Ng reservoir were modeled under a single production pattern for the next 5 years. Influence of different mass flows of reinjection on reservoir pressure and temperature was studied. Also, water level variations were simulated with different reinjection rates. The results showed that the annual average water level drop is 3.4m and temperature drops is 0.1 ℃ in 5 years under a single production pattern. The annual average water level drop for the whole study area would be about 1.3m under 60% reinjection rate and 0.2m under 100% reinjection rate, respectively.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2010年第12期1633-1638,共6页
Acta Energiae Solaris Sinica
基金
国家高技术研究发展计划(863)项目(2006AA05Z425)
