费尔干纳盆地油气资源潜力与勘探新领域
Oil and gas potential and new exploration targets in Ferganskaya Dolina
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摘要: 费尔干纳盆地是中亚地区的一个老油区,虽然经过了多年的勘探和开发,但仍有较大的资源潜力。主要勘探新领域有:寻找非构造油气藏(隐蔽油气藏)、老油田内部滚动勘探、钻探古中生界深层。费尔干纳盆地此前的钻探目标均是围绕大构造背景上的背斜圈闭进行,非背斜构造的研究和钻探很少。笔者研究认为费尔干纳盆地寻找非背斜圈闭油藏前景广阔;在对老油田内部钻采、试油资料的详细分析后,认为老油田内部主力逆断层的下盘和背斜构造的侧翼具有较大的资源潜力;盆地的古中生界不仅可以新生古储,而且其本身也可以生油,在盆地局部隆起及边部都存在古中生界成藏的条件。Abstract: Ferganskaya Dolina is an old oil province in Middle Asia,and now still highly prospective in spite of long-term exploration and development.New exploration targets include nonstructural(concealed) oil and gas pools,rolling exploration of the interior of the old oil fields and drilling of the deeper levels of the Mesozoic and Palaeozoic strata.The previous drlling targets were once concentrated to the anticline traps,and little has been done for the research and drilling in the non-anticline traps in this basin.The detailed study of the data on the drilling and producing test of the interior of the old oil fields shows that the lower walls of major thrust faults and flanks of anticlines in the old oil fields are expected to have more potential in oil and gas resources.The Palaeozoic and Mesozoic strata in the basin occur not only as reservoir rocks but also as source rocks,and thus are favourable for the oil and gas accumulation both in local uplifted and marginal areas of the basin.
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