论文部分内容阅读
贝301区块储层非均质性强、孔隙结构复杂,利用测井资料评价水淹层难度很大。针对这一问题研究了该区块水淹后的测井响应特征分析,结果表明同一岩性储层随着水淹级别的增加,电阻率呈下降趋势,声波时差略有增大;不同岩性相同水淹情况下,砂砾岩电阻率下降幅度大于砂岩电阻率下降幅度;不同沉积韵律水淹层测井响应特征不同。该研究结果为下一步开展水淹层测井定量解释奠定了基础。
The reservoir in Block 301 has strong heterogeneity and complex pore structure, so it is very difficult to evaluate the water flooded layer with log data. In response to this problem, the logging response characteristics of the block after flooding are studied. The results show that the resistivity decreases with the increase of flooding level in the same lithologic reservoir, and the acoustic jet lag slightly increases. Under the same flooding conditions, the decrease of resistivity of sandstone and conglomerate is larger than that of sandstone resistivity. The logging response characteristics of different depositional prosodic water flooded layer are different. The results of this study laid the foundation for the quantitative interpretation of water-flooded logging in the next step.