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本文详细地研究了塔里木盆地前石炭系顶面不整合(面)的形成机理、平面展布特征、不整合的控油及对油气的运、聚、保、破的作用。结果表明:断褶不整合、褶皱不整合、超覆不整合是控油意义较大的不整合,前石炭系顶面不整合面及其上、下的可渗透层是油气运移的良好通道,岩溶作用形成的次生储层和不整合面上的超覆砂体储层是油气聚集的良好场所。
In this paper, the formation mechanism, plane distribution characteristics, unconformity oil control and the role of oil and gas transport, accumulation, preservation and destruction of the top of the Upper Carboniferous in the Tarim Basin have been studied in detail. The results show that fold unconformity, fold unconformity and overconformity are unconformities of great oil control significance. The top unconformity and the upper and lower permeable layers of the former Carboniferous are good channels for hydrocarbon migration. Secondary reservoirs formed by karstification and super-sand bodies on unconformity reservoirs are good sites for hydrocarbon accumulation.