川中—川南过渡带非背斜隐蔽由气藏的地震勘探

EXPLORATION OF NON-ANTICLINAL OIL/GAS RESER RVOIR BY SEISMIC METHOD IN THE TRANSITIONAL BELT FROM THE MIDDTE TO THE SOUTH OF SICHUA AN PROVINCE

四川石油管理局地震资料处理解释中心

本文较系统地阐述了川中—川南过渡带地震资料的特殊处理成果(包括瞬时振幅包络、瞬时相位,亮点及波阻抗等)应用于勘探油气藏的原理和方法,并论述了含油气地震反射异常的识别标志。文中通过实例说明了这些方法的正确性与可行性。同时,笔者认为本区油气具有点多、层多与分散的特点,是应用地震勘探寻找非背斜油气藏的有利地区。

In this paper, using the results obtained from the special data processing for the data collected from the transitional belt of Middle-South sichuan province ci cincluding the envelope of the instantaneous amplitude, the instantaneous phase, the bright spots, and the acoustic impedance, etc.) to the searching for oil/gas reservoir was described. Also described in this paper is the identification keys of the seismic anomaly indicating the presence of oil/gas. The validity and the feas sibility of the fechniques used were illustrated by examples. It is believed that th the reservoir in this area is featured with wide distribution as well as multiple layers. Obviously, it is an area where the non-anticlinal oil/gas reservoir is in h high potential.