辽河盆地黄金带油田沙一段剩余油分布规律研究

发布时间：2018-10-12 17:53

【摘要】：黄金带油田是辽河油田的一部分,发育在受断裂控制的辽河盆地的东部凹陷内,断块复杂,砂体厚度薄、平面连通性差,这些都对油田的整体认识造成了困难。而且经过几十年的勘探开发,油田主力储层的油气已经大量采出。为维持老油田的持续稳产,本次研究对黄金带油田进行了储层四性关系、储层测井二次解释、小层级别的气、油、水分布规律进行研究,从而寻找剩余油有利地区。研究结果表明,黄金油田沙河街组一段油层的岩性、物性、含油性和电性具有较一致的变化规律,即岩性越粗、物性越好、含油越饱满、电性越好。含油级别下限定为油斑;含油的岩性下限定为细砂岩级;含油的孔隙度下限定为11%,对应的渗透率下限为10×10-3μm2;电性的含油下限定为电阻率10Ω·m,声波时差270μs/m。油气分布主要受工区内复杂的断块和沉积相带的控制,同时也受储层岩性和物性条件影响,因此工区内W闭多为构造和岩性共同控制的复合型油气藏。油气主要在主体构造高部位以及北东—南西走向的断裂带所控制的条带状区域分布。每个小层中油气分散较为分散,自下而上油层发育变差,气层发育变好。剩余油则集中在构造较高、断层遮挡、物性相对较差及注采不完善、储层未动用部位。纵向上各小层储量动用不均衡,分层采出程度差异大,剩余可采储量纵向上不集中,主力层不明显,挖潜难度大。S1上主力层位采出程度高,地质储量也较少,剩余可采储量主要S1中和S1下段位置。
[Abstract]:The gold-belt oil field is a part of Liaohe oilfield, developed in the eastern sag of Liaohe basin controlled by fault. The fault block is complicated, the thickness of sand body is thin, and the plane connectivity is poor. After decades of exploration and development, oil and gas in the main reservoir has been produced in large quantities. In order to maintain the sustained and stable production of the old oil field, this study has carried on the reservoir four relations to the gold belt oil field, the reservoir logging secondary interpretation, the small layer grade gas, the oil, the water distribution law carries on the research, thus seeks the remaining oil advantageous area. The results show that the lithology, physical property, oil-bearing property and electrical property of the first member of Shahejie formation in gold oil field have the same change rule, that is, the thicker the lithology, the better the physical property, the fuller the oil content and the better the electric property. The oil level is limited to oil patch; the lithology of oil is limited to fine sandstone; the porosity of oil is limited to 11 and the lower limit of permeability is 10 脳 10 ~ (-3) 渭 m ~ (2); the resistivity of oil is limited to 10 惟 m, and the acoustic time difference is 270 渭 s / m ~ (-1). The distribution of oil and gas is mainly controlled by the complex fault blocks and sedimentary facies belts in the working area, and also by the lithology and physical conditions of the reservoir. Therefore, the W / W closure in the working area is mainly a composite oil and gas reservoir controlled by structure and lithology together. The distribution of oil and gas is mainly in the high part of the main structure and the belt area controlled by the fault zone of NSE-NW strike. The distribution of oil and gas in each sublayer is relatively dispersed, and the development of the bottom-up reservoir becomes worse and the gas reservoir develops better. The remaining oil is concentrated in high structure, fault occlusion, relatively poor physical properties, imperfect injection and production, and unused reservoir. On the vertical level, the production of reserves is unbalanced, the degree of stratified recovery is different, the remaining recoverable reserves are not concentrated vertically, the main layer is not obvious, and it is difficult to tap potential. The remaining recoverable reserves are mainly located in the lower part of S1 and S1.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13;TE327

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