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首页> 外文会议>International Conference on Geologic Problem Solving with Microfossils >APPLICATION OF A STATISTICALLY DERIVED, INTEGRATED BIOZONATIONTO A DEEPWATER MIOCENE GULF OF MEXICO FIELD
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APPLICATION OF A STATISTICALLY DERIVED, INTEGRATED BIOZONATIONTO A DEEPWATER MIOCENE GULF OF MEXICO FIELD

机译：在统计学上衍生的综合生物兴奋剂在墨西哥领域的深水中间湾的应用

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To refine Unocal's Gulf of Mexico deepwater Miocene biozonation, a statistically rigorous methodology was applied to an extensive micropaleontological database of wells penetrating the Miocene. Over a two-year period, we analyzed, in an integrated manner, the stratigraphic distribution of calcareous nannofossil and foraminiferal species that resulted in improvements in age dating and correlation for both exploration- and development-scale projects. Our approach was to first begin with a detailed evaluation and validation of bioevents of many hundreds of Miocene-age taxa using hardcopies of species distribution charts (BugCAD plots), followed by analysis of results processed through specialized computer software (IPS and BioSlot). This process yielded the placement of the more common types of bioevents (i.e., species range tops and bases), and in addition aided in the recognition of new, useful, subordinate bioevents (e.g., first downhole increases). All bioevents were then analyzed using the ranking and scaling probabilistic sequencing method (RASC), and the correlation and scaling in time method (CASC). The RASC / CASC methods resulted in the most probable order, termed the "optimum sequence" for the Miocene-age biostratigraphic events. This optimum sequence has been empirically validated by its successful application to correlations of previously drilled wells currently in production in a deepwater Gulf of Mexico field.
机译：要细化墨西哥优尼科的深水湾中新世biozonation，在统计学上严格的方法适用于井穿透中新世的广泛数据库，微体。过了两年的时间，我们分析，以综合的方式，钙质超微化石和有孔虫物种的地层分布，导致在年龄测定和相关性改进两个exploration-和开发规模的项目。我们的方法是先用数百使用的物种分布图（图BugCAD），然后通过专门的计算机软件（IPS和BioSlot）处理结果的分析硬拷贝中新世年龄类群的bioevents进行详细评估和验证开始。该方法得到了更常见的类型bioevents的放置（即，种类范围顶部和碱），此外辅助在识别的新的，有用的，从属bioevents（例如，第一井下增加）。然后，将所有bioevents使用排名和缩放的概率测序方法（RASC），相关和在时间缩放的方法（CASC）进行分析。该RASC / CASC方法导致最可能的顺序，被称为为中新世时代的生物地层学事件“最佳顺序”。这个最佳序列已被其成功应用在深水墨西哥湾的现场经验验证以前钻井的相关性目前正在生产中。

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