THE GEOLOGICAL STRUCTURE, FORMATION OF PETROLEUM POOLS AND HYDROCARBON EXPLORATION IN LUNNAN-AKEKULE AREA OF THE TARIM BASIN
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摘要: 本文通过轮南-阿克库勒地区已有地震地质解释剖面以及井中储层沥青、地层水有机地化分析成果,概述了该地区地质结构与油气成藏史。结合盆地构造发展史,论述了轮南-阿克库勒地区的多期成藏地质条件,以及圈闭成藏后油气整体封存环境的破坏或保存过程。最后提出:勘探目标应注重与构造不整合相关的古生界(奥陶系、石炭系)削截(非背斜)圈闭,同时,兼顾三叠系披覆构造圈闭。Abstract: Based on study of seismic-geological sections,well data and analysis of organic geochemistry of formation water in Lunnan-Akekule area of the Tarim Basin,the geological structure and formation of hydrocarbon pools were indicated.Combining with development history of basinal tectonics,it was pointed out that there were several periods of formation of hydrocarbon pools in the area.Then the seal conditions after accumulation of hydrocarbon were discussed.The authors suggested that petroleum exploration in the area should consider the unconformity-related Paleozoic(Ordovician,Carboniferous)non-anticline traps and the Triassic traps in drape structures.
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