發(fā)布時(shí)間：2019-02-17 11:02

【摘要】：研究區(qū)為海拉爾-塔木察格盆地(簡(jiǎn)稱(chēng)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。勘探現(xiàn)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(chǔ)層,是油氣勘探的新領(lǐng)域。本文運(yùn)用油氣地質(zhì)勘探理論和地球物理技術(shù),通過(guò)巖心觀察描述、大量地質(zhì)統(tǒng)計(jì)分析、儲(chǔ)層微觀地質(zhì)特征研究、次生孔隙帶預(yù)測(cè)、成藏條件與規(guī)律研究,儲(chǔ)層地球物理預(yù)測(cè)和綜合評(píng)價(jià)等技術(shù),總結(jié)了具有代表性的深洼區(qū)油氣及其儲(chǔ)層基本地質(zhì)特征、成藏地質(zhì)條件、預(yù)測(cè)有效儲(chǔ)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(yùn)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(lǐng)域,是洼槽區(qū)深層油氣運(yùn)聚成藏的重要特征;層位上,洼槽區(qū)深層油氣藏應(yīng)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(chǔ)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(guān),與構(gòu)造高低無(wú)關(guān);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(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：P618.13

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