四川盆地罗渡溪构造高分辨率地震勘探采集方法

A STUDY OF THE HIGH RESOLUTION SEISMIC EXPLORATION AND COLLECTION TECHNIQUE IN LUODUXI STRUCTURE OF SICHUAN BASIN

针对１９９１年高分辨率勘探所得雷－１地震剖面反射波连续性差、能量弱的特点，为了用地震勘探方法解决四川盆地油气储层薄、孔隙度低、油气产出能力与裂缝发育程度关系这３个地质问题，１９９７年在四川盆地罗渡溪构造开展了以查明雷－１构造形态、断层展布为地质目标的高分辨率地震勘探方法试验，得到了一套关于高分辨率地震勘探采集装备配置及野外施工的方法。用该方法可得到良好的高分辨率地震反射剖面，为四川盆地油气勘探拓宽了领域。

The reflected wave of Lei-1 seismic profile measured during the high resolution exploration in 1991 is characterized by poor continuity and weak energy. Aimed at overcoming these weaknesses and solving three geological problems(thin oil, gas bearing layer, low porosity and the relationship between the oil ,gas producing capacity and the development of fissures in Sichuan basin), the authors carried out the test of high resolution seismic exploration technique in 1997 so as to find out the structural form and the distribution of faults along Lei 1 profile and, as a result, obtained the collection equipment disposition and the field working technique related to the high resolution seismic exploration, thus broadening the field of oil gas exploration in Sichuan basin.