【摘要】 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.更多还原

【Abstract】 Energy half-time,coherent,RMS amplitude and dominant frequency attributes are common seismic attributes in seismic data interpretation and reservoir prediction now.However,the essential meaning of energy half-time has seldom been concerned.The article explains energy half-time in detail through formula,model test and practical application.The result possesses guiding effects on practical production.Studies show that:1) Energy half-time reflects relative change of energy in analysis time window.2) The preferred size of analysis time window is close to the length of wavelet.3) The midpoint in falling edge of energy half-time corresponds to point of interface.It’s the sign which separates reservoir and wall rock.4) Compared with energy half-time calculated directly,center-of-mass method is smoother and better for low S/N data.5) Energy half-time can also identify weak signal preferably.更多还原