论文部分内容阅读
我国西部的许多中新生代含油气盆地周缘广泛发育滑脱的褶皱逆冲带,在这些冲断带中已发现了丰富的油气聚集。文章通过对西部主要盆地的周缘滑脱逆冲褶皱带的研究,指出这些构造带具有形成时间新,变形范围大和构造复杂的特点,由于强烈的构造变形,其中所形成的圈闭以构造型为主,油气藏成排成带产出;文章指出,西部滑脱逆冲褶皱带中的油气聚集具有近源和被多期改造的特点,断层是油气运移聚集的主要因素,油气勘探的目标应放在逆冲带的前缘区进行。
In many western Cenozoic petroliferous basins, the extensional fold-thrust belts are widely developed in the periphery, and abundant hydrocarbon accumulation has been found in these thrust belts. Based on the study of the peripheral slip-thrust fold belt in the western major basins, the paper points out that these tectonic belts have the characteristics of new formation time, large deformation range and complex structure. Because of the strong tectonic deformation, the trap formed by them is mainly of tectonic type , And the oil and gas reservoirs are in succession into zones. The article points out that the hydrocarbon accumulation in the western thrust and thrust fold zone has the characteristics of near source and multi-phase transformation. The fault is the main factor of hydrocarbon migration and accumulation. The target of oil and gas exploration should be put In the front zone of the thrust belt.