南堡5号构造带油藏精细评价研究

发布时间：2018-04-01 07:59

本文选题：南堡5号构造　切入点：构造精细解释　出处：《东北石油大学》2017年硕士论文

【摘要】：南堡5号构造中浅层油气富集,是南堡油田主要的产油区,具有较大的滚动评价开发潜力。南堡5号构造断层、火山岩发育,以构造油藏为主,不同构造部位储层物性差异大,油气精细评价存在难度。因此有必要对南堡5号构造带进行油藏精细评价研究。南堡5号构造研究区面积310km2,本文以南堡5号构造的东一段(Ed1)至沙一段(Es1)油藏组为研究对象,在三级层序地层划分的基础上开展构造精细解释和圈闭识别、刻画并进行评价、优选有利勘探目标。充分利用地震、测井、油藏信息,以地球物理综合地质解释为主线,进行空间的断裂系统梳理和构造的精细识别,应用大型砂岩体叠前时间偏移资料,通过井-震结合、合成记录精细标定,确定层序界面及最大洪泛面,最终建立层序地层格架,并确定区域构造地质特征以及断裂体系,实现南堡5号整体构造特征的精细刻画。深入分析南堡5号沉积及储层特征,包括沉积相类型的识别、沉积相展布与演化特征分析、储层特征与成藏主控因素分析等。遵循从区域到局部,从油层组到小层,从粗略到精细逐步深入、逐级控制的解释原则,明确了南堡5号构造体系域格架下沉积相的平面展布及纵向演化,并恢复目的层段沉积相带展布面貌,达到储层精细预测的目的。运用模型正演技术,针对南堡5号构造火山岩发育特点,分别设计了薄层及薄互层火山岩、中心式及裂隙式火山口等地质模型,采用射线追踪原理,获得不同类型火山岩的地震响应,通过时间切片、相干切片及纹理属性确定火山口的方法。基于以上研究,在南堡5号构造上识别出低幅度构造圈闭、地层—岩性圈闭、火山岩圈闭,确定并精细评价了2个目标优选区。
[Abstract]:The middle-shallow oil and gas accumulation in Nanpu No. 5 structure is the main oil producing area in Nanbao Oilfield, which has a great potential for rolling evaluation and development. The structure fault of Nanpu No. 5, volcanic rock is developed, the main reservoir is structural reservoir, and the physical properties of different structural parts are different greatly. Oil and gas fine evaluation is difficult, so it is necessary to study the reservoir fine evaluation of Nanbao 5 structural belt. The area of Nanbao 5 structural study area is 310 km2. On the basis of the division of third-order sequence stratigraphy, structural fine interpretation and trap identification, characterization and evaluation are carried out, and favorable exploration targets are selected. The main line is geophysical comprehensive geological interpretation, which makes full use of seismic, logging and reservoir information. By combing the fault system in space and fine identification of structures, using the pre-stack time migration data of large sandstone body, combining well and earthquake, the fine calibration of synthetic records is used to determine the sequence interface and the maximum flood surface, and finally the sequence stratigraphic framework is established. Regional tectonic geological characteristics and fault system are determined to depict the whole structural characteristics of Nanpu 5. The sedimentary and reservoir characteristics of Nanpu 5 are analyzed, including the identification of sedimentary facies, the distribution and evolution of sedimentary facies. Analysis of reservoir characteristics and main controlling factors of reservoir formation, etc. The principle of interpretation from region to part, from reservoir formation to sublayer, from rough to fine, step by step and step by step control, is followed. The plane distribution and longitudinal evolution of sedimentary facies under the structural system tracts of Nanpu 5 are defined, and the distribution of sedimentary facies in the target formation is restored to achieve the purpose of fine reservoir prediction. According to the characteristics of volcanic rock development in Nanbao No. 5 structure, the geological models of thin layer and thin interbedded volcanic rock, central volcanic rock and crater crater are designed, and the seismic response of different types of volcanic rocks is obtained by using ray tracing principle. Based on the above research, low-amplitude structural traps, stratigraphic-lithologic traps, volcanic traps, low-amplitude structural traps, and volcanic traps are identified on the basis of the above studies. Two target optimal selection areas were identified and evaluated.
【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】：P618.13

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