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首页> 外文会议>Indonesian Petroleum Association Twenty-Eighth Annual Convention Vol.1, Feb 26-28, 2002, Jakarta >SEISMIC STRATIGRAPHIC INTERPRETATION OF A MAJOR 3D, THE GABUS SUB-BASIN, BLOCKS B AND TOBONG, WEST NATUNA SEA, INDONESIA GETTING THE GEOLOGY BACK INTO SEISMIC
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SEISMIC STRATIGRAPHIC INTERPRETATION OF A MAJOR 3D, THE GABUS SUB-BASIN, BLOCKS B AND TOBONG, WEST NATUNA SEA, INDONESIA GETTING THE GEOLOGY BACK INTO SEISMIC

机译：印度尼西亚西纳塔纳海地区主要3D，Gabus次盆地，B区块和Tobong地层的地震地层解释，使地质学重新回到地震中

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During the year 2000, Conoco Indonesia Inc. Ltd. (CII) acquired and processed a large regional 3D survey, covering 2500 square kilometers of the Gabus Sub-Basin, West Natuna, offshore Indonesia. In addition to re-assessing the previously drilled structural highs and associated, hydrocarbon discoveries, the main potential for prospect generation within the area is anticipated to be stratigraphic plays within complex fluvial and marginal lacustrine deposits. Because the basic structural configuration of the area is relatively well understood from previous 2D seismic data and the major highs have been drilled (although not optimally), interpretation of the 3D data has focused primarily on stratigraphy rather than structure. To optimize stratigraphic information the interpretation has utilized available software to analyze the 3D data as a volume rather than the traditional methodology of interpreting a 3D volume as a series of 2D lines. To perform this type of interpretation, over a large area and within a limited time frame, a workflow combining suitable interpretation software within CII has been used to perform 3D horizon picking, seismic attribute analysis and visualization. Facies maps have been generated and correlated to major sequence tracts allowing a series of geological time slices to be reconstructed for the Basin. The workflow involved undertaking an initial data assessment and structural interpretation using visualization and standard 3D seismic interpretation software. This was followed by interpretation of regionally consistent surfaces using a fast and accurate auto-picking tool, based on trace shape similarity to propagate horizons omni-directionally. The auto-picker also allowed the horizon to be viewed in amplitude, real time during the interpretation, which contributed significantly to producing a robust interpretation in the complex environments of deposition. The regional surfaces were used to slice through the 3D seismic volume and produce a series of geological time slices and attribute maps. The interpretation of diagnostic seismic facies for prospective sequences has identified new prospectivity within the area. Source rock distribution has been re-interpreted based on seismic facies and the regional hydrocarbon charge model up-dated accordingly. This is expected to move the area into a mature phase of exploration during which stratigraphic prospects will be targeted and existing, currently un-commercial, discoveries re-assessed.
机译：在2000年，Conoco Indonesia Inc. Ltd.（CII）获得并处理了一项大型的区域3D测量，该测量范围覆盖了2500平方公里的印度尼西亚西海岸西纳图纳地区的Gabus次流域。除了重新评估先前钻探的结构高点和相关的油气发现外，预计该区域内产生远景的主要潜力是复杂的河流和边缘湖相沉积物中的地层。由于从先前的2D地震数据中可以相对很好地理解该区域的基本结构配置，并且已经钻出了主要的最高点（尽管不是最优的），因此3D数据的解释主要集中在地层而不是结构上。为了优化地层信息，解释已利用可用软件将3D数据分析为体积，而不是将3D体积解释为一系列2D线的传统方法。为了执行这种类型的解释，在很大的区域和有限的时间范围内，已使用结合了CII中合适的解释软件的工作流程来执行3D视线拾取，地震属性分析和可视化。已经生成了相图并将其与主要层序相关，从而可以为盆地重建一系列地质时间片。工作流程包括使用可视化和标准3D地震解释软件进行初始数据评估和结构解释。然后，使用快速准确的自动拾取工具来解释区域一致的表面，该工具基于迹线形状相似性来全方位传播地层。自动选择器还允许在解释过程中实时查看幅度和幅度，这显着有助于在复杂的沉积环境中进行可靠的解释。区域表面用于切片3D地震体，并生成一系列地质时间切片和属性图。对前瞻序列的诊断地震相的解释已经确定了该地区的新前瞻性。已根据地震相重新解释了烃源岩分布，并相应更新了区域碳氢化合物充注模型。预计这将使该地区进入勘探的成熟阶段，在此阶段将以地层勘探为目标，并对现有的，目前非商业性的发现进行重新评估。

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