HEFEI BASIN IN EARLY CRETACEOUS -CHARACTERIZATION AND ANALYSIS OF PETROLEUM POTENTIAL

作者：YIWanxia,ZHAOZongju,LIXuetian,SHENJinlong,ZHOUJingao

摘要：Comprehensive analyses were made based on seismic prospecting data, electrical prospecting data and basin simulation data as well as regional geological data and thorough discussions were conducted about the complicated structures, features and evolution of Hefei Basin in Early Cretaceous in this study,and it was derived that that Hefei Basin was a composite basin formed during the transformation of the stress field from compressive toward tensile in Early Cretaceous. In other words, this basin was a foreland basin of gliding-thrust type, which is mainly controlled by the Dabie orogenic belt in the south side in the early to middle period of Early Cretaceous, while being a strike-slip basin of pull-apart type,which is mainly controlled by the activity of Tanlu fracture in the east side in the middle to late period of Early Cretaceous. Moreover, the potential Lower Cretaceous oil and gas system in the pull-apart basin and the vista for its prospecting were explored in this study. Tectonism of the Tanlu fracture was further discussed based on the results of characterization of the basin, and it was pointed out that this is beneficial and instructive to the oil and gas prospecting in Hefei Basin

发文机构：HangzhouInstituteofPetroleumGeology ShengliOilFieldBranchCompany

关键词：安徽合肥盆地白垩纪油藏分析大别山区域油气藏盆地特性盆地勘探Early CretaceousHefei BasinDabie orogenic beltTanlu faultanalysis of oil and gas potentialAnhui.

分类号： P618.130.2[天文地球—矿床学][天文地球—地质学]P534.53[天文地球—古生物学与地层学][天文地球—地质学]