在当前地震资料解释及储层预测中,能量半时与相干、均方根振幅、主频等成为经常采用的地震属性,但其理论含叉与本质还很少有人关注.本文通过公式解剖、模型测试与实际应用,对能量半时属性做了较详细的诠释,研究结果对实际生产有一定指导作用.研究表明:1)能量半时反映的是一分析窗内能量的相对变化关系,可指示沉积环境、岩性岩相的变化;2)能量半时分析时窗长度取接近子波长度为好;3)能量半时下降沿的中点正好对应界面分界点,可以作为储层与围岩的分界标志;4)质心能量半时比直接计算的能量半时要光滑,对于低信噪比资料,采用前者为好;5)能量半时还具有识别弱信号的优点. In the current interpretation of seismic data and reservoir prediction, energy semi-times and coherence, root mean square amplitude and frequency have become the frequently used seismic attributes, but their theories include the essence and the fork are seldom concerned.According to the formula anatomy, Model test and practical application, the semi-time property of energy has been explained in more detail, and the research results have certain guiding effect on actual production.Research shows that: 1) The half energy of energy reflects the relative change of energy in an analysis window, Indicating the change of sedimentary environment and lithology and lithofacies; 2) the half-time energy analysis time window length is preferably close to the wavelet length; 3) the mid-point of half-time falling edge coincides with the interface demarcation point, 4) the half-time of the center of mass energy is smoother than half of the directly calculated energy, and the former is better for the low signal-to-noise ratio data. 5) The advantage of identifying the weak signal when the energy is half is also available.