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储层裂缝及砂体的空间展布方位对油气勘探和开发具有重要意义,岩心是研究储层的唯一实体,虽有多种岩心原始方位恢复的手段,但是缺乏简便易行的方法.本文用古地磁方法对井下钻井岩心进行复位,进而研究岩心裂缝及砂体的展布方向,以延长油田X区块6口井46块样品为例,得出了这6口井的裂缝及砂体空间展布方位,并对该方法的可靠性进行了分析,完善了该方法的理论与技术体系.研究结果表明,利用古地磁方法进行岩心复位具有成本低、易操作且精度高的特点.
The fractures of the reservoirs and the spatial distribution of the sand bodies are of great significance to the exploration and development of oil and gas. The core is the only entity that studies reservoirs. Although there are many means of recovering the original orientation of cores, Using the paleomagnetic method to reset the downhole drilling core, and then to study the core fractures and the distribution of the sand body, taking 46 samples from 6 wells in Block X of the oilfield as an example, the fractures and sandbodies of these 6 wells are obtained And the reliability of the method is analyzed and the theoretical and technical system of the method is improved.The results show that the use of paleomagnetic method for core reset has the characteristics of low cost, easy operation and high precision.