新肇油田葡萄花层剩余油及开发潜力研究

发布时间：2018-04-01 09:40

本文选题：裂缝　切入点：新肇油田　出处：《东北石油大学》2017年硕士论文

【摘要】：随着石油天然气资源的日益开发利用,常规孔隙性油气藏储量逐渐减少,裂缝型储层近年来被广泛开采开发,研究成果也逐渐增多,但由于其原始孔隙率高低不一,渗透率均极低,通常裂缝发育带的渗透率很高。由于储渗空间发育分布极不均一,同一储集层的不同部位,储集性能相差悬殊,因此开发的关键问题是天然裂缝的研究。新肇油田葡萄花层由于发育近东西向天然裂缝,注水开发后,裂缝发育方向的油井见水早,见水后含水上升快,裂缝不发育的油井注水受效差、产量递减快,调整效果不明显。本次研究以新肇油田葡萄花层为例,以描述储层、构造、裂缝和剩余油为主线,应用三维地震、区域沉积、测井、录井、岩心、无源微地震和生产动态等资料,综合储层描述、常规测井识别、三维地质建模和油藏数值模拟等技术,描述储层展布规律、裂缝分布规律和剩余油分布规律,在此基础上,考虑裂缝和剩余油分布特征,落实新肇油田葡萄花层机采井区的剩余油潜力,制定合理的开发方式及调整对策。在搜集整理了新肇油田的地质特征研究成果的基础上,以储层和裂缝研究为主线,根据划分沉积微相的标准,将新肇葡萄花层由原来的11个小层重新划分为15个沉积单元,结合常规测井、无源微地震等裂缝解释成果及注水开发过程中裂缝动态反映,建立了常规测井曲线判别裂缝模式,搞清了裂缝分布规律。在裂缝研究的基础上,以双重介质三维地质模型和剩余油分布规律为主线,通过油藏数值模拟方法,并结合动静态劈分单井单层剩余油结果,对剩余油进行综合描述,根据剩余油分布的结果,优选了不规则加密及注采系统调整方案,部署加密井87口,其中油井84口,水井3口,预计采收率18.53%,采收率比原方案提高了3.31%。
[Abstract]:With the development and utilization of petroleum and natural gas resources, the reserves of conventional porous reservoirs are gradually reduced, the fractured reservoirs have been extensively exploited in recent years, and the research results have increased gradually, but the original porosity is different. The permeability is very low, and the permeability of fracture developing zone is very high. Because of the heterogeneity of the development and distribution of reservoir and permeability, the reservoir performance is very different in different parts of the same reservoir. Therefore, the key problem of development is the study of natural fractures. Due to the development of near east-west natural fractures in the grape flower beds of Xinzhao Oilfield, after water injection, the wells in the direction of fracture development see water earlier, and the water cut rises quickly after seeing water. Oil wells with undeveloped fractures suffer from poor water injection efficiency, fast production decline, and no obvious effect of adjustment. This study takes Gaohua formation of Xinzhao Oilfield as an example, taking description of reservoir, structure, fracture and remaining oil as the main line, using 3D earthquake and regional sedimentation. Logging, logging, core, passive microseismic and production performance data, comprehensive reservoir description, conventional logging identification, 3D geological modeling and reservoir numerical simulation to describe the distribution of reservoir, On the basis of fracture distribution law and residual oil distribution law, considering the distribution characteristics of fracture and remaining oil, the residual oil potential of Gaohua formation machine recovery well area of Xinzhao Oilfield is realized. On the basis of collecting and sorting out the research results of geological characteristics of Xinzhao Oilfield, taking reservoir and fracture study as the main line, according to the criteria of dividing sedimentary microfacies, Xinzhao grape flower layer is divided from 11 layers into 15 sedimentary units. Combined with conventional logging, passive microseismic and other fracture interpretation results, and the dynamic reflection of fractures in the process of water injection development, a conventional logging curve is established to distinguish fractures. Based on the research of fracture, taking the 3D geological model of dual medium and the law of residual oil distribution as the main line, the reservoir numerical simulation method is used to combine the results of dynamic and static split single well single layer remaining oil. According to the result of remaining oil distribution, 87 infill wells are arranged, of which 84 wells, 3 wells, and 18.53 recovery factors are estimated. The recovery rate is 3.31% higher than that of the original scheme.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE327

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