【摘要】 乌伦古坳陷石炭系地层火成岩发育、埋藏深,构造-沉积背景复杂,并在后期遭受了强烈改造,导致地层序列横向上变化复杂,纵向上地层对比难度大;且由于其顶部火成岩的屏蔽作用,石炭系地震反射信噪比低,导致对该区的地层认识不清,制约了勘探工作的进一步展开。通过综合野外露头、钻井、地震及重磁电等资料进行联合研究,分析了乌伦古坳陷石炭系内部层系结构与展布,指出了其油气勘探的方向。更多还原

【Abstract】 Igneous rocks were developed,they were deeply buried with complicated structural-sedimentary background and intensive reconstruction of Carboniferous Formation in Wulungu Depression,which resulted in complex variation in horizontal stratigraphic sequence and great difficulty in vertical stratigraphic correlation.Moreover,owing to the shielding effect of the upper igneous rocks,signal-noise ratio of Carboniferous Formation was low,which induced unclear understanding of this area and restraint for further exploration.In combination with field outcrops,drilling,seismic,gravity,magnetic and magnetotelluric data,integrated research is carried out;and stratigraphic sequence structure and distribution are analyzed within Carboniferous Formation in Wulungu Depression,and hydrocarbon exploration direction is indicated in the area.更多还原