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随着青西油田复杂裂缝型油气藏勘探开发的深入,对双孔介质储层裂缝孔隙的评价不应局限于定性评价,更需要定量评价。针对下白垩统裂缝型储层,阐述了利用岩芯裂缝观测和描述资料对成像测井资料进行标定,结合Po-roSpect、FVI、PoroDist等软件计算裂缝孔隙度,以及利用双侧向经验公式计算裂缝孔隙度,从而实现双孔介质储层的定量评价。经青西油田岩芯地面核磁实验验证,与上述测井计算的裂缝孔隙度结果基本一致。该方法应用于青西油田裂缝型储层,实现了油田双孔介质储集层的定量评价,提高了油田地质储量计算的准确性,为油田开发打下了较好的基础。
With the further exploration and development of complex fractured reservoirs in Qingxi Oilfield, the evaluation of fractured pores in double porosity reservoirs should not be limited to qualitative assessment, but needs quantitative assessment. According to the Lower Cretaceous fractured reservoirs, the imaging logging data are calibrated using the observation and description data of core fractures. The fracture porosity is calculated by software such as Po-roSpect, FVI and PoroDist, and calculated using double lateral empirical formula Fracture porosity, so as to realize the quantitative evaluation of double porosity reservoir. According to the core-ground NMR test in Qingxi oilfield, the result of fracture porosity calculated by the above logging is basically the same. The method is applied to the fractured reservoirs in Qingxi Oilfield, realizing the quantitative evaluation of the double porosity reservoir in the oilfield, improving the accuracy of the geological reserves calculation and laying a good foundation for the oilfield development.