海上气枪震源地震子波研究的进展

从现有胀性震源阵列在较深水条件下的直达波中分离出点状胀缩震源子波和胀性震源子波,然后用胀性震源子波按激发接收环境的作用合成反射子波.由于反射子波的形状很接近雷克子波等情况,从而澄清了地震子波研究领域内一些较混乱的概念和名称.应用这些新的概念和认识做了一个实验,即直接从原始地震记录中提取反射序列.这些工作对海上高分辨率地震的研究和储层顶测方法的改进,可能会是一条新的、更加切实可行的途径.

PROGRESS OF SEISMIC WAVELET STUDY FOR MARINE AIR GUN SOURCE

To separate the direct path wave of volume array source into point volume source wavelet and then to separate the point volume source wavelet into compresion wavelet and tension wavelet under deeper water conditions. Then according to surrounding of source-detector with this compresion wavelet to synthesis the reflection wavelet. It is found that this reflection wavelet is very similar to Ricker wavelet, thus having clarified some uncertain concepts and in area of seismic wavelet study. Fingally a test is introduced for using this new concept and understanding, from which reflection patterns are extracted directly from orional seismic recording. These work done may lead to a new and more applicable resolution for improving the study of offshore high resolution seismic and reservoir prediction.