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准噶尔盆地永进地区侏罗系由于埋藏深、成岩作用强烈,储层物性总体较差,但在侏罗系顶部红层中发育相对较好的储层,并获得了工业油气流。根据岩心观察,结合薄片、测井及试油等资料可知,优质储层的发育及分布与层理缝密切相关。层理缝不仅是良好的储集空间,而且增大了孔隙的连通性,为有机流体的运移提供了通道,促进了次生孔隙的发育。同时,层理缝对储层的影响程度与其密度直接相关,密度越大,储层物性越好。研究结果表明,颗粒粗、分选好的砂岩层易形成层理缝,车莫古隆起强烈抬升及断层活动是开启层理缝的主要动力,早期烃类充注和后期异常高压为层理缝的保存或进一步开启提供了条件。永进地区侏罗系有利勘探方向为永1井区向东北的车莫古隆起的隆升方向,靠近断层的区域为最有利的地区;永2和永9井区是次一级勘探有利区。
The Jurassic in the Yongjin area of Junggar Basin is characterized by deep burial, strong diagenesis and generally poor reservoir physical properties. However, relatively well reservoirs are developed in the top red beds of the Jurassic and industrial oil and gas streams are obtained. According to core observation, combined with thin slices, well logging and oil testing data, the development and distribution of high-quality reservoirs are closely related to the bedding seam. Lamellar seam is not only a good reservoir space, but also increases the connectivity of pores, providing a channel for the migration of organic fluids and promoting the development of secondary pores. At the same time, the influence of the bedding seam on the reservoir is directly related to its density. The greater the density, the better the physical properties of the reservoir. The results show that coarse grain and well-sorted sandstones are easy to form the bedding seam. The strong uplift and fault activity of the Chemo-Moqiu uplift are the main motivation for opening the bedding seam. The early hydrocarbon charge and the later anomalous high pressure are the bedding seam The conditions for saving or further opening are provided. The favorable exploration direction of the Jurassic in Yongjin area is the uplift direction of the Chemo-Mo uplift from Yong 1 area to the northeast, and the area close to the fault is the most favorable area. The Yong 2 and Yong 9 well areas are the favorable areas of the next level exploration .