大庆长垣杏北地区高三组油成藏主控因素研究

发布时间：2018-04-18 16:06

  本文选题：杏北地区 + 高三组油层　； 参考：《东北石油大学》2015年硕士论文

【摘要】：大庆长垣杏北地区高三组是大庆油田又一新的油勘探领域,为了研究大庆长垣杏北地区高三组油分布规律,更好的指导其油勘探,在油藏解剖及油水分布规律研究的基础上,通过油分布与成藏条件之间关系分析,对大庆长垣杏北地区高三组油成藏主控因素及模式进行了研究,并预测了油成藏的有利区带。论文取得的主要成果有:(1)杏北地区高三组油藏可划分为断背斜油藏、断鼻油藏、断层遮挡、构造-岩性、断层岩性和岩性油藏6种类型。(2)杏北地区高三组油藏平面上零星分布,具有“西好东差”的特征,纵向上油主要分布于G34-5小层以上砂组中。(3)杏北地区高三组油成藏主要受到5个因素控制:①烃源岩供给控制了油气平面分布为“西好东差”;②油气运移方向及路径控制油气成藏的区域;③输导断裂上调和顶部储层发育造成油气主要在浅部分布;④断裂密集带附近的正向构造是油富集的主要部位;⑤遮挡断裂侧向封闭能力控制了油的富集程度。(4)建立了杏北地区高三组2种油成藏模式:①西北斜坡区油气沿断裂走向(密集带)运移断层封闭成藏模式;②西南斜坡区油沿砂体运移反向断层遮挡运聚成藏模式。(5)优选出杏北地区高三组1个Ⅰ类、3个Ⅱ类和2个Ⅲ类共6个油成藏的有利区。其中Ⅰ类有利区位于中央背斜带西部杏69井西;Ⅱ类有利区位于西北斜坡区萨9-斜3井东、西南斜坡区杏5-3-丙040井北和中央背斜带西部杏4-3-更23井北;Ⅲ类有利区位于中央背斜带杏扶70-1井东和井西。
[Abstract]:The third formation of Gao 3 in Xingbei area of Daqing Placanticline is another new oil exploration field in Daqing Oilfield. In order to study the oil distribution law of high three formation in Xingbei area of Daqing Placanticline, and better guide its oil exploration, on the basis of reservoir anatomy and oil water distribution law,Based on the analysis of the relationship between oil distribution and reservoir forming conditions, the main controlling factors and models of oil accumulation in the third group of high school in Xingbei area of Daqing Placanticline were studied, and the favorable zones of oil accumulation were predicted.The main results obtained in this paper are as follows: (1) the reservoir in Xingbei area can be divided into six types: faulted oblique reservoir, fault nose reservoir, fault occlusion, tectonic-lithology, fault lithology and lithologic reservoir.The oil is mainly distributed in the sand formation above the G34-5 layer. The reservoir formation of the third group in Xingbei area is mainly controlled by five factors, the supply of 1 hydrocarbon source rock controls the distribution of oil and gas in the plane of "West, good and East".(2) the migration direction and path of oil and gas control the upregulation of oil and gas migration faults and the development of the top reservoir, which results in the oil and gas being mainly located in the forward structure near the dense belt of the shallow distribution of Jiao 4 faults, which is the main position of oil enrichment;(5) the lateral sealing ability of blocking faults controls the degree of oil enrichment. (4) two types of oil accumulation models of the third group of high grade oil in Xingbei area are established. The oil and gas accumulation model along the fault strike (dense zone) in the northwestern slope area of the northwestern slope is established.(2) the model of oil migration along the sand body along sand body to block accumulation and accumulation of oil in southwest slope area.) 6 favorable areas for oil accumulation were selected from three groups of high three groups in Xingbei area, I. e., class 鈪，

本文编号：1769079