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首页> 外文期刊>Erdol Erdgas Kohle >Modellierung hydrogeochemischer Prozesse bei der lnjektion won Meerwasser in Offshore-Ollagerstatten Hydrogeochemieal Modelling of Seawater Injection into Offshore Oil Fields
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Modellierung hydrogeochemischer Prozesse bei der lnjektion won Meerwasser in Offshore-Ollagerstatten Hydrogeochemieal Modelling of Seawater Injection into Offshore Oil Fields

机译：海水注入近海油田沉积过程中的水文地球化学过程建模海水注入近海油田注入过程中的水文地球化学建模过程

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摘要

Sea water is injected into offshore oil- fields and coastal-near onshore fields to maintain pressure for secondary recovery. Due to compositional differences of sea water and formation water, hydrogeochemieal processes are initiated. Such processes develop from the injection well along the migration path through the reservoir, and reach the production well. Ultimately, the mixing ratio of the two water types controls processes such as precipitation of minerals or dissolution of minerals from the reservoir rock. Here, we are introducing mass balance models based on chemical thermodynamics as a hydrogeochemieal tool to qualitatively and quantitatively retrace such processes. It is the aim to demonstrate how mixing of sea and formation water controls type and amount of scaling and mineral dissolution, exemplarily in the UK Miller oilfield (North Sea). The presented approach and the results shall highlight the applicability of hydrogeochemieal mass balance models in order to predict scale-forming processes. Finally, an outlook is presented about predictive hydrogeochemieal ID- and 3D-transport models in development.
机译：海水被注入到海上油田和近海沿岸的油田中，以维持二次开采的压力。由于海水和地层水的成分差异，开始了水文地理过程。这些过程从注入井沿着穿过油藏的运移路径发展，并到达生产井。最终，两种水的混合比控制着诸如矿物质沉淀或矿物质从储层岩石中溶出的过程。在这里，我们将介绍基于化学热力学的质量平衡模型，作为一种水力地球化学工具，以定性和定量地追溯此类过程。目的是演示如何在英国米勒油田（北海）中示例性地将海水和地层水混合来控制结垢的类型，量以及矿物溶解。提出的方法和结果应突出水地线半球质量平衡模型的适用性，以预测水垢形成过程。最后，对发展中的预测性水文地理标记ID和3D传输模型提出了展望。

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