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首页> 外文学位 >Using multicomponent seismic data to delineate hydrocarbon reservoirs: 2D-3C Willesden Green, Alberta and 3D-3C Manitou Lake, Saskatchewan.
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Using multicomponent seismic data to delineate hydrocarbon reservoirs: 2D-3C Willesden Green, Alberta and 3D-3C Manitou Lake, Saskatchewan.

机译：使用多分量地震数据描绘油气储层：阿尔伯塔省2D-3C威利斯登格林和萨斯喀彻温省3D-3C曼尼通湖。

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摘要

Multicomponent seismic analysis can be a powerful tool for reservoir delineation. Analyzing both compressional (PP) and converted (PS) wavefields can provide detailed information about lithologies, fluid saturation and subsurface structures. Two projects are considered in this thesis: a 2D-3C (two dimensional seismic survey recorded on three component geophones) project from Willesden Green, Alberta and the 3D-3C (three dimensional seismic survey recorded on three component geophones) project from Manitou Lake, Saskatchewan.;Vp/Vs estimates (from horizon correlations after registration) show anomalous values around 1.6 to 1.8 in zones of interest around the producing wells. This result was helpful for sand/shale discrimination, considering that shale's Vp/Vs values are usually higher than 1.9.;Lower Cretaceous fluvial sand channels with high porosity and permeability in the Manitou Lake area of Saskatchewan contain important oil and gas reserves. The goal here is to use 3C-3D seismic data to differentiate sand versus shale and find hydrocarbon-filled porosity. Well logs and synthetic seismograms are used to correlate the PP and PS seismic sections from the 3C-3D seismic survey, to better delineate the Colony and Sparky reservoir sands. Detailed registration of multicomponent seismic data aims to reduce the uncertainty of traditional channel interpretation and improve well targeting. Mode-converted (PS) seismic amplitudes complement traditional PP channel interpretations. PP and PS amplitude maps show different aspects of the Sparky and Colony sand channels. Curvature co-rendered with the PP/PS amplitude envelope or curvature co-rendered with coherence can better delineate the edges of the channels, providing information about the top and bottom of the reservoir. Seismic attributes such as AVO, fluid factor, LMR (lambda-mu-rho), and joint inversion methods provide additional information. The simultaneous inversion method followed by Vp/Vs maps can complement the information for drilled wells and give confidence in identifying new drilling locations. Vp/Vs values less than 2.15, from PP and PS maps (registered in PP time), correlate with productive zones.;The Upper Cretaceous (Turonian) Second White Speckled Shale (2WS) is the zone of interest at Willesden Green. PP and PS synthetic seismograms generated from borehole logs correlate well with the surface seismic data. Post-stack PP and PS inversion was applied to the vertical and radial components to yield P and S impedances.
机译：多分量地震分析可能是确定油藏的有力工具。分析压缩波场和转换波场可以提供有关岩性，流体饱和度和地下结构的详细信息。本文考虑了两个项目：来自阿尔伯塔省Willesden Green的2D-3C（记录在三分量地震检波器上的二维地震勘探）项目和来自Manitou Lake的3D-3C（记录在三分量地震检波器上的三维地震勘探）项目，萨斯喀彻温省； Vp / Vs估计值（来自注册后的层间相关性）显示，生产井周围感兴趣区域的异常值约为1.6至1.8。考虑到页岩的Vp / Vs值通常高于1.9，该结果有助于砂/页岩判别;萨斯喀彻温省曼尼通湖地区的白垩纪河床型河道具有高孔隙率和渗透率，其中蕴藏着重要的油气储量。这里的目标是使用3C-3D地震数据来区分砂岩和页岩，并找到充满烃的孔隙度。测井曲线和合成地震图用于关联3C-3D地震勘测的PP和PS地震剖面，以更好地描绘出Colony和Sparky储层砂。多分量地震数据的详细配准旨在减少传统通道解释的不确定性并改善井眼定位。模式转换（PS）地震振幅是对传统PP通道解释的补充。 PP和PS振幅图显示了Sparky和Colony沙道的不同方面。与PP / PS振幅包络线共同渲染的曲率或与相干性共同渲染的曲率可以更好地描绘通道的边缘，从而提供有关储层顶部和底部的信息。诸如AVO，流体因子，LMR（λ-mu-rho）和联合反演方法等地震属性提供了更多信息。 Vp / Vs映射之后的同时反演方法可以补充已钻井的信息，并有信心确定新的钻探位置。从PP和PS映射（在PP时间中记录）得出的Vp / Vs值小于2.15，与生产区相关。上白垩统（Turonian）第二白斑页岩（2WS）是Willesden Green感兴趣的区域。由钻孔测井生成的PP和PS合成地震图与地表地震数据很好地相关。将叠后PP和PS反演应用于垂直和径向分量，以产生P和S阻抗。

著录项

  • 作者

    Varga, Roxana Maria.;

  • 作者单位

    University of Calgary (Canada).;

  • 授予单位 University of Calgary (Canada).;
  • 学科 Geophysics.;Petroleum Geology.
  • 学位 M.Sc.
  • 年度 2009
  • 页码 146 p.
  • 总页数 146
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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