情字井地区高密度三维地震采集技术研究

发布时间：2018-09-09 08:16

【摘要】：高密度地震勘探指的是以小于某种既定或以往的采集道距的方法进行布设采集,或者仅以点为最小单元的形式。此项技术最早是由国外学者提出,沿用至今已发展比较成熟,得到众多应用该技术进行油气勘探者的好评。三维地震勘探技术自引入实际油气勘探工作中以来,被广大油气勘探学者及研究人员进一步创新发展,目前基本掌握了三维地震勘探技术的核心思想,技术应用娴熟,可以针对大部分地区油气田勘探。近年来,三维地震勘探应用日渐广泛,但随着勘探条件的复杂化和高精度采集的要求,常规三维地震采集技术采集的数据已不适应高精度地震解释的需要。高密度三维地震采集技术以其对小段块、薄储层、小砂体识别能力的提高,能提供高信噪比、高分辨率和高保真度的数据,为高精度资料处理和解释提供了保证,满足了油田生产的要求。通过运用PSTM和DMO叠前偏移噪声分析技术,为更佳的成像效果提供了新的方法。在激发、接收及处理方面均对三维地震的分辨率和保真度有所改善,形成了一套针对情字井地区资料接收处理技术。本论文取得了如下主要成果:提供了新的观测系统优化方法;通过缩小激发点间隔,加密微测井等方法,提高了表层资料的分辨率,给井深设计提供精确参数;确定了情字井地区以提高分辨率为目的的激发井深设计技术,形成了一套情字井地区高密度采集技术系列;实现了与仪器车连接,对地震资料进行实时评价,地震采集评价信息反馈及时率达到了100%。
[Abstract]:High-density seismic exploration refers to a method that is less than a given or previous acquisition distance, or in the form of only a point as the minimum element. This technology was first put forward by foreign scholars. It has been developed and mature, and has been praised by many oil and gas prospectors. Since the 3D seismic exploration technology has been introduced into the actual oil and gas exploration work, it has been further innovated and developed by the vast number of oil and gas exploration scholars and researchers. At present, it has basically mastered the core idea of 3D seismic exploration technology and has been skillful in its application. Oil and gas fields can be explored in most areas. In recent years, 3D seismic exploration has been widely used, but with the complication of exploration conditions and the requirement of high-precision acquisition, the data collected by conventional 3D seismic acquisition technology can not meet the needs of high-precision seismic interpretation. The high density 3D seismic acquisition technology can provide high SNR, high resolution and high fidelity data with the improvement of recognition ability of small blocks, thin reservoirs and small sand bodies, which provides a guarantee for high precision data processing and interpretation. Meet the requirements of oilfield production. By using PSTM and DMO prestack migration noise analysis techniques, a new method is provided for better imaging effect. In the aspects of excitation, reception and processing, the resolution and fidelity of 3D seismic are improved, and a set of data receiving and processing technology is formed. The main achievements of this paper are as follows: a new optimization method of observation system is provided, and the resolution of surface data is improved by reducing the interval between excitation points and infilling micrologging, and the precise parameters are provided for the design of well depth. In order to improve the resolution, the design technology of exciting well depth is determined, a set of high density acquisition technology series is formed, and the real-time evaluation of seismic data is realized by connecting with instrument vehicle. The timely feedback rate of seismic acquisition and evaluation information has reached 100%.
【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】：P631.4

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