基于叠后资料的储层预测技术研究及应用

发布时间：2018-06-01 06:36

  本文选题：倾角导向体 + 地震正演模拟　； 参考：《中国石油大学(华东)》2015年硕士论文

【摘要】：近几年通过持续研究表明准噶尔盆地玛湖凹陷百口泉组油气成藏受有利相带、鼻凸构造及断裂共同控制,通过钻探,整个凹陷及斜坡区初步展现出了整体成藏特征。但由于以往百口泉组沉积体系的研究是以组、段为单元,很难解决百口泉组内部如百一段、百二段的多个砂层组之间的差异,而且常规砂层对比极易造成不同时期砂体对比为同一层砂体,形成砂体穿时对比现象,导致其沉积期次、空间叠置关系不清,使油藏性质复杂化。为准确刻画三叠系百口泉组有利沉积相带及砂体空间叠置特征,寻找有利地层岩性圈闭目标,本文中应用多种适用性的地球物理新技术,包括高分辨率地层追踪技术,正演模拟技术,基于OVT域多方位数据体的曲率提取技术,多属性综合分析技术,高精度层序约束条件下的波阻抗反演技术,对玛西斜坡区扇体进行整体评价。首先对玛西斜坡周边地区的基本地质特征进行了研究。在此基础上对测井资料和地震资料进行评价和处理;其次,对地震资料进行精细构造解释,特别是为了后期作为反演约束条件,应用高分辨率层序地层学解释技术,建立了井震统一的高精度等时层序格架;为了对小断层断距进行识别,进行了正演模拟对解释进行指导;同时利用基于OVT域的分方位角数据的曲率提取技术增强对断层的识别;然后,通过正演模拟技术对不同沉积相带反射特征的研究;最后,通过采用多属性分析技术对有利相带进行横向分布,利用波阻抗反演提高砂体的纵向预测精度;最终达到研究区有利储层预测的最终目的。
[Abstract]:Through continuous research in recent years, it is shown that the formation of Baikouquan formation oil and gas reservoir in Mahu depression of Junggar Basin is controlled by favorable facies zone, nose-convex structure and fault. Through drilling, the whole sag and slope area show the characteristics of integral reservoir formation. However, because the study of the sedimentary system of Baikouquan formation used to be based on formation and formation, it is difficult to solve the differences among the sand formations in Baikouquan formation, such as Baikouquan formation, Baikouquan formation, and Baikouquan formation. It is easy to cause the sand bodies to be the same sand body in different periods by conventional sand layer correlation, which results in the sand body passing through time correlation phenomenon, resulting in its sedimentary period, spatial overlay relationship is unclear, and the reservoir properties are complicated. In order to accurately characterize the favorable sedimentary facies belt and the spatial superposition of sand bodies in the Baikouquan formation of Triassic system and to find favorable lithologic trap targets, a variety of new geophysical techniques, including high-resolution stratigraphic tracing techniques, have been applied in this paper. The forward modeling technology is based on the curvature extraction technique of multi-azimuth data volume in OVT domain, the multi-attribute comprehensive analysis technique and the wave impedance inversion technique under the condition of high precision sequence constraint to evaluate the fan body in Maxi slope area as a whole. Firstly, the basic geological characteristics of the surrounding area of Maxi slope are studied. On this basis, the logging data and seismic data are evaluated and processed. Secondly, fine structural interpretation of seismic data is carried out, especially in order to use high-resolution sequence stratigraphy interpretation technology as a constraint condition for inversion. The uniform high-precision isochronous sequence framework is established, the forward simulation is used to guide the interpretation in order to identify the fault spacing of small faults, and the curvature extraction technique based on the azimuth data in OVT domain is used to enhance the recognition of faults. Then, the reflection characteristics of different sedimentary facies belts are studied by forward modeling technology. Finally, the transverse distribution of favorable facies belts is carried out by using multi-attribute analysis technology, and the longitudinal prediction accuracy of sand body is improved by wave impedance inversion. Finally, the final goal of favorable reservoir prediction in the study area is achieved.
【学位授予单位】：中国石油大学(华东)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13;P631.4

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