【摘要】：研究區(qū)為海拉爾-塔木察格盆地(簡稱海塔盆地)中部斷陷帶塔南凹陷的洼槽區(qū),總面積約3500 km~2�？碧浆F狀表明,洼槽區(qū)深層地層中仍存在有利于油氣聚集的有效儲層,是油氣勘探的新領域。本文運用油氣地質勘探理論和地球物理技術,通過巖心觀察描述、大量地質統(tǒng)計分析、儲層微觀地質特征研究、次生孔隙帶預測、成藏條件與規(guī)律研究,儲層地球物理預測和綜合評價等技術,總結了具有代表性的深洼區(qū)油氣及其儲層基本地質特征、成藏地質條件、預測有效儲層分布。深度上洼槽區(qū)深層油氣藏集中分布在各自的次生孔隙發(fā)育帶,斷裂控制油氣的宏觀運聚成藏格局,次生孔隙決定具體的油氣藏形成與油氣富集,而原油相態(tài)的變化有效地拓深洼槽區(qū)油氣富集的空間和領域,是洼槽區(qū)深層油氣運聚成藏的重要特征;層位上,洼槽區(qū)深層油氣藏應首先集中分布在T3、T23、T22等不整合面及其附近,其次集中烴源巖夾持的儲層段中,洼槽區(qū)深層油氣藏分布與富集主要與次生孔隙的發(fā)育有關,與構造高低無關;平面上,洼槽區(qū)深層油氣藏多分布于洼槽中心或斷裂發(fā)育帶。油氣藏的分布與油氣富集主要受次生孔隙發(fā)育的控制,這就是中部斷陷帶洼槽區(qū)深層油氣藏分布與富集的根本特殊規(guī)律。
[Abstract]:The study area is the depression of the Tanan sag in the central fault depression zone of the Hailaal-Tamchag basin (referred to as the Haita basin), with a total area of about 3500 km~2.. The present situation of exploration shows that there are still effective reservoirs in deep layer of depression area which are favorable to oil and gas accumulation and are a new field of oil and gas exploration. In this paper, by means of oil and gas exploration theory and geophysical technology, through core observation and description, a large number of geological statistical analysis, reservoir microscopic geological characteristics, prediction of secondary pore zone, reservoir forming conditions and rules, Reservoir geophysical prediction and comprehensive evaluation are used to summarize the basic geological characteristics of oil and gas and their reservoir formation geological conditions and to predict the distribution of effective reservoirs. Deep oil and gas reservoirs in deep upper depression are concentrated in their secondary pore development zones. Faults control the macro migration and accumulation of oil and gas, and secondary pores determine the formation and enrichment of oil and gas reservoirs. The change of phase state of crude oil effectively extends the space and field of oil and gas accumulation in deep depression area, which is an important feature of deep oil migration and accumulation in depression area. On the horizon, the deep reservoirs in the depression area should be concentrated on the unconformities of T _ (3) T _ (23) T _ (22) and its vicinity, and the distribution and enrichment of the deep reservoirs in the depression region are mainly related to the development of secondary pores. It has nothing to do with the height of the structure; On the plane, deep reservoirs in the trough area are mostly distributed in the center of the depression or in the fault development zone. The distribution and enrichment of oil and gas reservoirs are mainly controlled by the development of secondary pores, which is the fundamental special law of the distribution and enrichment of deep reservoirs in the depression area of the central fault depression zone.
【學位授予單位】：東北石油大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：P618.13

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