贝尔油田南一段地质特征研究

发布时间：2018-06-05 13:30

  本文选题：贝尔油田 + 南一段　； 参考：《东北石油大学》2017年硕士论文

【摘要】：贝尔油田构造位置位于海拉尔盆地贝尔凹陷中部的贝中次凹南部,属于复杂断陷盆地,具有断块多、油藏类型多、含油层系多、储层类型多、油品类型多、油藏埋藏深的地质特点。已开发油田主要面临的问题:一是多物源、多期次构造运动导致标志层不明显,小层对比难;二是埋藏深、砂岩砂砾岩储层交互等导致地震反射轴不明显,小断层解释难;三是沉积类型多,相变快,沉积微相展布刻画难。以地质研究为主体,综合应用地质、取心、测井、地震、岩心分析等资料,以高分辨率层序地层学、沉积学、构造地质学,开发地质学等多学科理论为指导,在统一的地质思路下进行相互渗透的综合性一体化研究,包括构造精细解释、小层划分对比、沉积微相等研究。研究结果表明:采取“恢复沉积过程、追踪层序界面、沉积旋回对比、确定缺失层段”的方法细分开发井的小层,完成了贝中油田南一段含油面积内开发井的地层对比与划分。井、震结合开展构造精细解释,运用相干体、三色混相分频等技术识别小断层,采取“震控形态、井定位置、模型组合”的断层组合方法进行断点组合和修正,提高了构造解释精度。确定贝尔油田南一段储层为湖泊—扇三角洲沉积体系,具有多物源的特征,主力油层以扇三角洲前缘水下分流河道为主。
[Abstract]:The structural location of Beier oilfield is located in the southern part of Beizhong depression in the middle of Beier depression in Hailaer Basin. It is a complex faulted basin with many fault blocks, many reservoir types, many oil-bearing strata, many reservoir types and many oil types. The geological characteristics of the buried depth of the reservoir. The main problems faced by the developed oilfields are as follows: first, multi-source, multi-stage tectonic movement leads to the lack of marked layer, the small layer is difficult to contrast, the second is buried depth, sandstone sand gravel reservoir interaction and other causes seismic reflection axis is not obvious, small fault interpretation is difficult; Third, there are many sedimentary types, fast phase transition, and the distribution and characterization of sedimentary microfacies is difficult. Taking geological research as the main body, synthetically applying the data of geology, coring, logging, seismic and core analysis, and guided by the theories of high-resolution sequence stratigraphy, sedimentology, tectonic geology, development geology, etc. Under the unified geological thinking, the research on the integration of interpenetration, including fine interpretation of structure, stratigraphic division and correlation, and sedimentary microequality, is carried out. The results show that the method of "recovering sedimentary process, tracing sequence interface, sedimentary cycle correlation and determining missing interval" is adopted to subdivide the small layers of the development well, and to complete the formation correlation and division of the development well in the oil bearing area of the first member of Beizhong Oilfield. Well and earthquake combined with structural fine interpretation, using coherent volume, trichromatic misphase frequency separation and other techniques to identify small faults, adopting the method of "seismic control form, well fixed location, model combination" fault combination method for fracture point combination and correction, The accuracy of structural interpretation is improved. It is determined that the reservoir in the southern first member of Beier Oilfield is a lacustrine fan delta sedimentary system with the characteristics of multiple provenances and the main reservoir is dominated by subaqueous distributary channel in the front edge of fan delta.
【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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本文编号：1982149