基于Origin的渗透系数衰减方程在地热水回灌中的应用

孔隙型热储层的回灌过程中，由于物理堵塞、生物化学堵塞、悬浮物堵塞和气体堵塞，热储层的渗透性下降，回灌能力变弱.为了定量查明渗透系数的衰减，以辽南地区某回灌试验为例，使用Origin软件计算出研究区渗透系数衰减方程，在此基础上计算了回灌井灌压-时间关系曲线和回扬周期.研究表明，利用Origin软件求取渗透系数衰减方程具有方便快捷、规范性好等优点，可在回灌试验数据处理中推广使用.

APPLICATION OF ORIGIN-BASED PERMEABILITY COEFFICIENT ATTENUATION EQUATION IN GEOTHERMAL WATER RECHARGE

During the recharge process of pore-type thermal reservoir,the permeability of thermal reservoir decreases and recharge capacity weakens due to physical,biochemical,suspension,and gas blockages.To quantify the attenuation of permeability coefficient,taking the recharge test in Southern Liaoning as an example,the Origin software is used to calculate the attenuation equation of permeability coefficient in the area,and then the relation between recharge pressure in the well bore and time,as well as the pump lifting cycle.The results show that the application of Origin to obtain the permeability coefficient attenuation equation has the advantages of convenience,efficiency and good feasibility,which can be widely used in the data processing of recharge test.