论文部分内容阅读
为研究地下水封石油洞库洞室间水封性,依托黄岛地下水封石油洞库工程,采用离散裂隙网络法进行了7个不同工况的分析,分别获得了在不同水幕压力、洞室间液面差、洞室间距和裂隙倾角条件下的地下水头分布和流体渗流情况。研究结果表明:水幕压力增大、洞室间液面差减小与洞室间距增大均会改善洞库水封性;裂隙网络中裂隙倾角的变化会影响围岩的渗透张量,从而改变裂隙网络中地下水的渗流路径,继而影响地下水封石油洞库洞室间水封性;仅靠增加水幕系统压力并不能保证洞室间水封性,地下水封石油洞库相邻洞室水封设计应综合考虑储油情况、洞室间距、裂隙倾角等因素。
In order to study the sealability of groundwater sealed caverns and caverns, seven different working conditions were analyzed by discrete fracture network method, relying on Huangdao underground water sealed caverns, The distribution of groundwater head and the fluid seepage under the condition of poor liquid level, cavern spacing and crevice inclination. The results show that the increase of water curtain pressure, the decrease of liquid level difference in the chamber and the increase of the distance between the cavities will all improve the water seal of the reservoir; the change of the fracture inclination in the fracture network will affect the permeability tensor of the surrounding rock, Change the seepage path of underground water in the fracture network, and then affect the water seal between underground water sealed oil and gas reservoir; only by increasing the water curtain system pressure can not guarantee the water seal between the chambers, Seal design should take into account the situation of oil storage, cavern spacing, crevice inclination and other factors.