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为了找出准噶尔盆地中部深层隐蔽油气藏的成藏机理与富集规律,通过车-莫古隆起形成演化及其不整合的控藏效应、油气充注历史和储层演化的配置关系、超压发育机制与隐性通道的输导效应三方面进行综合分析,结果表明:K/J不整合古土壤层发育连续,渗透率小于0.1md,垂向封盖能力强、半风化岩层CIA指数小于75%,化学风化作用弱,侧向非均质性强;油气充注时刻储层物性较好,孔隙度为10%~15%;4 500~5 500 m以下发育静态超压,最高压力系数达2.2,大量发育天然水力破裂.永进地区深层隐蔽油气藏同时受油气充注时间、优势输导通道、圈闭空间类型等成藏因素的控制.
In order to find out the mechanism of accumulation and accumulation of deep subtle reservoirs in the central part of Junggar Basin, through the formation and evolution of car-Mugou uplift and their unconformably controlled reservoirs, the relationship between oil and gas charge history and reservoir evolution, The results show that the K / J unconformity paleosol layer is developed continuously, the permeability is less than 0.1md, the vertical sealing ability is strong, and the semi-weathered rock layer CIA index is less than 75 %, Weak chemical weathering and strong lateral anisotropy. The physical properties of reservoirs are good at the time of hydrocarbon filling, and the porosity is 10% -15%. Static pressure over 4 500-5 500 m is developed, and the maximum pressure coefficient is up to 2.2 The development of a large number of natural hydraulic fractures. Deep subtle reservoirs in the Yongjin area are controlled by hydrocarbon accumulation factors such as the time of hydrocarbon filling, the dominant channel of conduction and the type of trap space.