高温高压岩心测试参数在准噶尔盆地碳氢检测中的应用

The use of high-temperature and high-pressure core test parameters in hydrocarbon detection in the Zhunger basin

新疆石油局地球物理研究所, 乌鲁木齐 830011

Institute of Geophysics, Xinjiang Petroleum Administration, Urumqi 830011

Zoeppritz方程模型正演、AVO油气检测需要提供准确的储层岩石弹性参数。这些参数野外不可能精确获得,而实验室对岩心模拟测试可弥补此不足。本研究利用实验区钻孔取心岩样,在模拟地下温压条件下测试其弹性参数,并用精确的测试参数经Zoeppritz方程作模型正演,以获取目的层有否油气响应机制,再进行有针对性的AVO处理。经准噶尔盆地西部地区实际资料检测,效果明显。此项工作可作为利用地震资料结合模拟测试检测油、气、水边界的一种有效手段。

In Zoeppritz's equation forward modeling and AVO hydrocarbon detection, accurate reservoir rock elastic parameters are needed. These parameters can' t been acquired accurately in the field. The simulation test for the core in laboratory can remedy the defect. In the research, we make use of the borehole core samples from the experimental area to test the elastic parameters upon the condition of modeling the subsurface temperature and pressure. Then we use the precise test parameters to perform forward modeling through the Zoeppritz's equation so as to obtain the response mechanism of oil and gas in the objective interval. After that, the AVO processing is carried out. The effect is clear through the real data detection in western Zhunger Basin. This work can be taken for an effective measure to detect the boundary of oil, gas and water using seismic data integrated with simulation test.