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济阳坳陷浅层气藏丰富,含气前后储层的物性差异较大,研究合气前后岩石弹性和物性参数的变化规律,可帮助解释人员进行气藏的地震识别。本文利用三轴应力实验仪对不同岩性的岩芯进行模拟地下压力条件下的含气、水、油介质的试验,同步测量了岩芯岩石的动静态弹性参数,并分析了其变化规律。
The shallow gas reservoirs in the Jiyang Depression are rich in gas reservoirs, and the physical properties of the reservoirs before and after the gas are quite different. Studying the variation law of rock elasticity and physical parameters before and after gas mixing can help interpret the seismic identification of gas reservoirs. In this paper, the tests of gas, water and oil media under different subsurface pressure on cores with different lithologies were carried out by using the triaxial stress tester. The dynamic and static elastic parameters of the core rock were measured synchronously, and the variation rules were analyzed.