“六五”期间,西南石油地质局组织了上扬子区(主要是四川盆地,含贵州大部、云南东部)复杂地形地质条件下油气勘探方法技术攻关,建立了一套完整的达到国内外先进水平的山区复杂构造的地球物理勘探方法技术系列,从而取得了准确、丰富的地下地质信息,为加深对四川盆地油气分布规律的认识,正确评价其含油气远景,提供了科学依据。 四川山区地形条件复杂多变,勘探难度甚大。该局的物探队伍,运用多道数字地震仪,成功地将宽线地震剖面测量和面积三维地震测量方法引进山区研究复杂的地腹构造,实现了地震数据采集、资料处理数字化。在川西龙门山的大型推覆体下,发现有利于油气储集的潜伏隆起。在川中完成5条区域 During the period of the Sixth Five-Year Plan, the Southwest Petroleum Geology Bureau organized the exploration of technologies for oil and gas exploration under complex terrain conditions in the Upper Yangtze region (mainly the Sichuan Basin, including most of Guizhou and eastern Yunnan) and established a complete set of advanced technologies Horizontal mountainous complex structure geophysical prospecting method technology series, so as to obtain accurate and abundant underground geological information, and provide a scientific basis for deepening understanding of the laws of oil and gas distribution in the Sichuan Basin and correctly evaluating its hydrocarbon-oil prospect. Sichuan mountainous terrain conditions are complex and changeable, exploration is very difficult. Using the multi-channel digital seismograph, the team’s geophysical team succeeded in introducing wide-line seismic section surveys and area three-dimensional seismic surveying methods into the complex terrestrial structures in mountainous areas to realize the digitization of seismic data collection and data processing. Under the large nappe in the Longmen Shan of western Sichuan, the potential uplift that is favorable to oil and gas accumulation is found. Complete five areas in Sichuan