Global mapping deep-water hydrocarbon plays of the continental margins
Global mapping deep-water hydrocarbon plays of the continental margins
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全球大陆边缘深水碳氢化合物分布图
DOI：
10.1071/aseg2004ab041
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
K.M.U. Fletcher
中科院分区：
文献类型：
--
作者：
Y. Fairhead;C. Green;K.M.U. Fletcher
自 1993 年以来，GETECH 一直致力于开发从卫星高度计数据中恢复重力的新方法和技术，其具体目标是改进全球大陆边缘深水区域的石油勘探方法。通过结合新的处理方法，我们可以恢复异常现象，准确可靠地表示波长低至 10 公里的地质结构。这些改进是通过应用：先进的地震重拾方法来恢复 ERS-1 雷达波形的起始点；一系列更准确且全球一致的干湿对流层传播和潮汐校正；基于数据可视化技术的仔细数据编辑和验证；微水准测量，解决卫星轨道之间的差异，以获得可靠的大地水准面；以及“大地水准面到重力”转换方法，该方法比现有方法具有显着优势。该方法使我们能够绘制海岸线 2 至 5 公里范围内的地图，并显着抑制在 30 至 40 公里波长范围内普遍存在并主导现有解决方案的噪声。在这些波长和更短的波长下，地质信号被噪声有效地掩盖。显示了墨西哥湾和印度尼西亚苏拉威西岛的分辨率示例。
Since 1993 GETECH has been involved in developing new methods and techniques to recover gravity from satellite altimeter data with the specific aim of improving oil exploration methods in deep-water areas of the continental margins, worldwide. By a combination of new processing methods, we can recover anomalies that are accurately and reliably representing geological structures down to 10 km in wavelength. These improvements have been possible by applying: advanced seismic repicking methods to recover the onset of ERS-1 radar waveforms; a range of more accurate and globally consistent wet and dry Troposphere propagation and tidal corrections; careful data editing and validation based on data visualisation techniques; micro-levelling to resolve discrepancies between satellite tracks in order to derive a reliable geoid surface; and the ‘Geoid to Gravity’ conversion method which has significant advantages over existing methods. The methodology has allowed us to map to within 2 and 5 km of the coast and significantly suppress noise that is prevalent and dominates existing solutions at 30 to 40 km wavelength. At these and shorter wavelengths the geological signal is effectively masked by the noise. Examples of the resolution for Gulf of Mexico and Sulawesi, Indonesia are shown.