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井下示踪砂模拟测试研究是“石油工业先进放射性示踪技术开发”研究项目的一项工作。利用先进的蒙特卡罗模拟计算技术,建立井下示踪砂测试模拟计算模型(图1)。通过计算3种不同能量的示踪剂46Sc、124Sb和192Ir在压裂裂缝中的分布情况,指导压裂示踪现场实验和数据评价解释。由于井下介质对示踪砂γ射线的康普顿散射,示踪砂距离探测器越远,探测器测到的能谱信号
Underground tracer sand simulation test research is “a” advanced research on radioactive tracer technology development "research project. The use of advanced Monte Carlo simulation technology, the establishment of underground tracer sand test simulation calculation model (Figure 1). By calculating the distribution of tracer 46Sc, 124Sb and 192Ir in fracturing fractures, three different energy tracers were used to guide field experiment and data evaluation of fracturing. Due to the Compton scattering of tracer gamma rays by the downhole media, the farther the tracer sand is from the detector, the spectrum signal detected by the detector